10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington D.C. 20549

FORM 10-K

Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the fiscal year ended December 31, 2014

Commission File Number 0-10661

TriCo Bancshares

(Exact name of Registrant as specified in its charter)

California	94-2792841
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

63 Constitution Drive, Chico, California	95973
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (530) 898-0300

Securities registered pursuant to Section 12(b) of the Act:

Common Stock, without par value	Nasdaq Global Select Market
(Title of Class)	(Name of each exchange on which registered)

Securities registered pursuant to Section 12(g) of the Act: None.

Indicate by check mark whether the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.

YES  ¨            NO   x

Indicate by check mark whether the Registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.

YES  ¨            NO   x

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter periods that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

YES  x            NO   ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

YES  x            NO   ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of the Registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of the Form 10-K or any amendment to this Form 10-K.

YES  x            NO   ¨

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Act (check one).

Large accelerated filer	¨	Accelerated filer	x
Non-accelerated filer	¨  (Do not check if a smaller reporting company)	Smaller reporting company	¨

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

YES  ¨            NO   x

The aggregate market value of the voting common stock held by non-affiliates of the Registrant, as of June 30, 2014, was approximately $289,650,631 (based on the closing sales price of the Registrant’s common stock on the date). This computation excludes a total of 3,616,101 shares that are beneficially owned by the officers and directors of Registrant who may be deemed to be the affiliates of Registrant under applicable rules of the Securities and Exchange Commission.

The number of shares outstanding of Registrant’s common stock, as of February 27, 2015, was 22,740,503.

DOCUMENTS INCORPORATED BY REFERENCE

The information required to be disclosed pursuant to Part III of this report either shall be (i) deemed to be incorporated by reference from selected portions of TriCo Bancshares’ definitive proxy statement for the 2015 annual meeting of stockholders, if such proxy statement is filed with the Securities and Exchange Commission pursuant to Regulation 14A not later than 120 days after the end of the Company’s most recently completed fiscal year, or (ii) included in an amendment to this report filed with the Commission on Form 10-K/A not later than the end of such 120 day period.

TABLE OF CONTENTS

		Page Number
PART I
Item 1	Business		2
Item 1A	Risk Factors		8
Item 1B	Unresolved Staff Comments		16
Item 2	Properties		16
Item 3	Legal Proceedings		17
Item 4	Mine Safety Disclosures		17
PART II
Item 5	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities		18
Item 6	Selected Financial Data		20
Item 7	Management’s Discussion and Analysis of Financial Condition and Results of Operations		21
Item 7A	Quantitative and Qualitative Disclosures About Market Risk		51
Item 8	Financial Statements and Supplementary Data		51
Item 9	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure		103
Item 9A	Controls and Procedures		103
Item 9B	Other Information		103
PART III
Item 10	Directors, Executive Officers and Corporate Governance		104
Item 11	Executive Compensation		104
Item 12	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters		104
Item 13	Certain Relationships and Related Transactions, and Director Independence		104
Item 14	Principal Accountant Fees and Services		104
PART IV
Item 15	Exhibits and Financial Statement Schedules		104
Signatures			105

FORWARD-LOOKING STATEMENTS

In addition to historical information, this Annual Report on Form 10-K contains forward-looking statements about TriCo Bancshares (the “Company,” “TriCo” or “we”) and its subsidiaries for which it claims the protection of the safe harbor provisions contained in the Private Securities Litigation Reform Act of 1995. These forward-looking statements are based on Management’s current knowledge and belief and include information concerning the Company’s possible or assumed future financial condition and results of operations. When you see any of the words “believes”, “expects”, “anticipates”, “estimates”, or similar expressions, these generally indicate that we are making forward-looking statements. A number of factors, some of which are beyond the Company’s ability to predict or control, could cause future results to differ materially from those contemplated. These factors include those listed at Item 1A Risk Factors, in this report.

Forward-looking statements speak only as of the date they are made, and the Company does not undertake to update forward-looking statements to reflect circumstances or events that occur after the date the forward-looking statements are made, whether as a result of new information, future developments or otherwise.

PART I

ITEM 1. BUSINESS

Information About TriCo Bancshares’ Business

TriCo Bancshares is a bank holding company incorporated in California in 1981 and registered under the Bank Holding Company Act of 1956, as amended (the “BHC Act”). The Company’s principal subsidiary is Tri Counties Bank, a California-chartered commercial bank (the “Bank”). The Bank offers banking services to retail customers and small to medium-sized businesses through 73 branch offices in Northern and Central California and had total assets of approximately $3.9 billion at December 31, 2014. The Bank’s deposits are insured by the Federal Deposit Insurance Corporation (the “FDIC”) up to applicable limits. See “Business of Tri Counties Bank”. The Company and the Bank are headquartered in Chico, California.

As a bank holding company, TriCo is subject to the supervision of the Board of Governors of the Federal Reserve System (the “FRB”) under the BHC Act. The Bank is subject to the supervision of the California Department of Business Oversight (the “DBO”) and the FDIC. See “Regulation and Supervision.”

TriCo has five capital trusts, which are all wholly-owned trust subsidiaries formed for the purpose of issuing trust preferred securities (“Trust Preferred Securities”) and lending the proceeds to TriCo. For more information regarding the trust preferred securities please refer to Note 17, “Junior Subordinated Debt” to the financial statements at Item 8 of this report.

Additional information concerning the Company can be found on our website at www.tcbk.com. Copies of our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to these reports are available free of charge through the investors relations page of our website, www.tcbk.com, as soon as reasonably practicable after the Company files these reports with the U.S. Securities and Exchange Commission (“SEC”). The information on our website is not part this annual report.

Business of Tri Counties Bank

The Bank was incorporated as a California banking corporation on June 26, 1974, and received its certificate of authority to conduct banking operations on March 11, 1975. The Bank engages in the general commercial banking business in 26 counties in Northern and Central California. The Bank currently operates from 57 traditional branches and 16 in-store branches.

The Bank conducts a commercial banking business including accepting demand, savings and time deposits and making commercial, real estate, and consumer loans. It also offers installment note collection, issues cashier’s checks, sells travelers checks and provides safe deposit boxes and other customary banking services. Brokerage services are provided at the Bank’s offices by the Bank’s arrangement with Raymond James Financial Services, Inc., an independent financial services provider and broker-dealer. The Bank does not offer trust services or international banking services.

The Bank has emphasized retail banking since it opened. Most of the Bank’s customers are retail customers and small to medium-sized businesses. The Bank emphasizes serving the needs of local businesses, farmers and ranchers, retired individuals and wage earners. The majority of the Bank’s loans are direct loans made to individuals and businesses in Northern and Central California where its branches are located. At December 31, 2014, the total of the Bank’s consumer loans net of deferred fees outstanding was $423,097,000 (18.5%), the total of commercial loans outstanding was $177,643,000 (7.8%), and the total of real estate loans including construction loans of $76,414,000 was $1,681,783,000 (73.7%). The Bank takes real estate, listed and unlisted securities, savings and time deposits, automobiles, machinery, equipment, inventory, accounts receivable and notes receivable secured by property as collateral for loans.

Most of the Bank’s deposits are attracted from individuals and business-related sources. No single person or group of persons provides a material portion of the Bank’s deposits, the loss of any one or more of which would have a materially adverse effect on the business of the Bank, nor is a material portion of the Bank’s loans concentrated within a single industry or group of related industries.

Acquisition of North Valley Bancorp

On October 3, 2014, TriCo completed the acquisition of North Valley Bancorp following receipt of shareholder approval for both institutions and all required regulatory approvals. As part of the acquisition, North Valley Bank, a wholly-owned subsidiary of North Valley Bancorp, merged with and into Tri Counties Bank. In the acquisition, each share of North Valley common stock was converted into the right to receive 0.9433 shares of TriCo common stock. TriCo issued an aggregate of approximately 6.58 million shares of TriCo common stock to North Valley Bancorp shareholders, which was valued at a total of approximately $151 million based on the closing trading price of TriCo common stock on October 3, 2014 of $23.01. In addition, each outstanding option to purchase shares of North Valley Bancorp common stock, whether or not previously vested and exercisable, was cancelled and the holder of the option was entitled to receive from North Valley Bancorp, subject to any required tax withholding, an amount in cash, without interest, equal to the excess over the exercise price per share, if any, of 0.9433 multiplied by the weighted average closing price of TriCo’s common stock for the 20 days preceding the merger, a total of $1,061,000. In connection with the merger, TriCo assumed North Valley Bancorp’s obligations with respect to its outstanding trust preferred securities.

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North Valley Bank was a full-service commercial bank headquartered in Redding, California. North Valley conducted a commercial and retail banking services which included accepting demand, savings, and money market rate deposit accounts and time deposits, and making commercial, real estate and consumer loans. North Valley Bank had $935 million in assets and 22 commercial banking offices in Shasta, Humboldt, Del Norte, Mendocino, Yolo, Sonoma, Placer and Trinity Counties in Northern California at June 30, 2014.

See Note 2 in the financial statements at Item 8 of this report for a discussion about this transaction.

Other Activities

The Bank may in the future engage in other businesses either directly or indirectly through subsidiaries acquired or formed by the Bank subject to regulatory constraints. See “Regulation and Supervision”.

Employees

At December 31, 2014, the Company and the Bank employed 1,009 persons, including seven executive officers. Full time equivalent employees were 965. No employees of the Company or the Bank are presently represented by a union or covered under a collective bargaining agreement. Management believes that its employee relations are good.

Competition

The banking business in California generally, and in the Bank’s primary service area of Northern and Central California specifically, is highly competitive with respect to both loans and deposits. It is dominated by a relatively small number of national and regional banks with many offices operating over a wide geographic area. Among the advantages such major banks have over the Bank is their ability to finance wide ranging advertising campaigns and to allocate their investment assets to regions of high yield and demand. By virtue of their greater total capitalization such institutions have substantially higher lending limits than does the Bank.

In addition to competing with other banks, the Bank competes with savings institutions, credit unions and the financial markets for funds. Yields on corporate and government debt securities and other commercial paper may be higher than on deposits, and therefore affect the ability of commercial banks to attract and hold deposits. Commercial banks also compete for available funds with money market instruments and mutual funds. During past periods of high interest rates, money market funds have provided substantial competition to banks for deposits and they may continue to do so in the future. Mutual funds are also a major source of competition for savings dollars.

The Bank relies substantially on local promotional activity, personal contacts by its officers, directors, employees and shareholders, extended hours, personalized service and its reputation in the communities it services to compete effectively.

Regulation and Supervision

General

The Company and the Bank are subject to extensive regulation under both federal and state law. This regulation is intended primarily for the protection of depositors, the deposit insurance fund and the banking system as a whole, and not for the protection of shareholders of the Company. Set forth below is a summary description of the significant laws and regulations applicable to the Company and the Bank. The description is qualified in its entirety by reference to the applicable laws and regulations.

Regulatory Agencies

The Company is a legal entity separate and distinct from the Bank and its other subsidiaries. As a bank holding company, the Company is regulated under the BHC Act, and is subject to supervision, regulation and examination by the FRB. The Company is also under the jurisdiction of the SEC and is subject to the disclosure and regulatory requirements of the Securities Act of 1933 and the Securities Exchange Act of 1934, each administered by the SEC. The Company’s common stock is listed on the Nasdaq Global Select market (“Nasdaq”) under the trading symbol “TCBK”” and the Company is, therefore, subject to the rules of Nasdaq for listed companies.

The Bank, as a state chartered bank, is subject to broad federal regulation and oversight extending to all its operations by the FDIC and to state regulation by the DBO.

The Bank Holding Company Act

The Company is registered as a bank holding company under the BHC Act. In general, the BHC Act limits the business of bank holding companies to banking, managing or controlling banks and other activities that the FRB has determined to be so closely related to banking as to be a proper incident thereto. As a bank holding company, TriCo is required to file reports with the FRB and the FRB periodically examines the Company. Under the Dodd-Frank Wall Street Reform and Consumer

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Protection Act (the “Dodd-Frank Act”), a bank holding company is required to serve as a source of financial and managerial strength to its subsidiary bank and, under appropriate circumstances, to commit resources to support the subsidiary bank. Qualified bank holding companies that elect to be financial holding companies may engage in any activity, or acquire and retain the shares of a company engaged in any activity, that is either (i) financial in nature or incidental to such financial activity or (ii) complementary to a financial activity, and that does not pose a substantial risk to the safety and soundness of depository institutions or the financial system generally (as determined solely by the FRB). Activities that are financial in nature include securities underwriting and dealing, insurance underwriting and agency, and making merchant banking investments. The Company has not elected to become a financial holding company.

The BHC Act, the Bank Merger Act, and other federal and state statutes regulate acquisitions of commercial banks. The BHC Act requires the prior approval of the FRB for the direct or indirect acquisition of more than 5 percent of the voting shares of a commercial bank or its parent holding company. Under the Bank Merger Act, the prior approval of an acquiring bank’s primary federal regulator is required before it may merge with another bank or purchase the assets or assume the deposits of another bank. In reviewing applications seeking approval of merger and acquisition transactions, the bank regulatory authorities will consider, among other things, the competitive effect and public benefits of the transactions, the capital position of the combined organization, the applicant’s performance record under the Community Reinvestment Act, consumer compliance, fair housing laws and the effectiveness of the subject organizations in combating money laundering activities.

The Consumer Financial Protection Bureau

The Dodd-Frank Act created the Consumer Financial Protection Bureau (the “CFPB”) as an independent entity with broad rulemaking, supervisory and enforcement authority over consumer financial products and services, including deposit products, residential mortgages, home-equity loans and credit cards. The CFPB’s functions include investigating consumer complaints, conducting market research, rulemaking, supervising and examining bank consumer transactions, and enforcing rules related to consumer financial products and services. CFPB regulations and guidance apply to all financial institutions and banks with $10 billion or more in assets are subject to examination by the CFPB. Banks with less than $10 billion in assets, including the Bank, will continue to be examined for compliance by their primary federal banking agency. Significant recent CFPB developments that may affect the Bank’s operations and compliance costs include:

• The issuance of final rules for residential mortgage lending, which became effective January 10, 2013, including definitions for “qualified mortgages” and detailed standards by which lenders must satisfy themselves of the borrower’s ability to repay the loan and revised forms of disclosure under the Truth in Lending Act and the Real Estate Settlement Procedures Act

• The issuance of a policy report on arbitration clauses which could result in the restriction or prohibition of lenders including arbitration clauses in consumer financial services contracts

• Actions taken to regulate and supervise credit bureaus and debt collections

• Positions taken by CFPB on fair lending, including applying the disparate impact theory in auto financing, which could make it harder for lenders to charge different rates or apply different terms to loans to different customers.

The Bank is not subject to examination by the CFPB but is required to comply with CFPB rules and regulations.

Safety and Soundness Standards

The Federal Deposit Insurance Corporation Improvement Act of 1991 (“FDICIA”) implemented certain specific restrictions on transactions and required the regulators to adopt overall safety and soundness standards for depository institutions related to internal control, loan underwriting and documentation, and asset growth. Among other things, FDICIA limits the interest rates paid on deposits by undercapitalized institutions, the use of brokered deposits and the aggregate extension of credit by a depository institution to an executive officer, director, principal stockholder or related interest, and reduces deposit insurance coverage for deposits offered by undercapitalized institutions for deposits by certain employee benefits accounts.

Section 39 to the Federal Deposit Insurance Act requires the agencies to establish safety and soundness standards for insured financial institutions covering:

• internal controls, information systems and internal audit systems;

• loan documentation;

• credit underwriting;

• interest rate exposure;

• asset growth;

• compensation, fees and benefits;

• asset quality, earnings and stock valuation; and

• excessive compensation for executive officers, directors or principal shareholders which could lead to material financial loss.

If an agency determines that an institution fails to meet any standard established by the guidelines, the agency may require the financial institution to submit to the agency an acceptable plan to achieve compliance with the standard. If the agency

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requires submission of a compliance plan and the institution fails to timely submit an acceptable plan or to implement an accepted plan, the agency must require the institution to correct the deficiency. An institution must file a compliance plan within 30 days of a request to do so from the institution’s primary federal regulatory agency. The agencies may elect to initiate enforcement action in certain cases rather than rely on an existing plan particularly where failure to meet one or more of the standards could threaten the safe and sound operation of the institution.

Restrictions on Dividends and Distributions

A California corporation such as TriCo may make a distribution to its shareholders to the extent that either the corporation’s retained earnings meet or exceed the amount of the proposed distribution or the value of the corporation’s assets exceed the amount of its liabilities plus the amount of shareholders preferences, if any, and certain other conditions are met. It is the FRB’s policy that bank holding companies should generally pay dividends on common stock only out of income available over the past year, and only if prospective earnings retention is consistent with the organization’s expected future needs and financial condition.

The primary source of funds for payment of dividends by TriCo to its shareholders has been and will be the receipt of dividends and management fees from the Bank. TriCo’s ability to receive dividends from the Bank is limited by applicable state and federal law. Under the California Financial Code, funds available for cash dividend payments by a bank are restricted to the lesser of: (i) retained earnings; or (ii) the bank’s net income for its last three fiscal years (less any distributions to shareholders made during such period). However, with the prior approval of the Commissioner of the DBO, a bank may pay cash dividends in an amount not to exceed the greatest of the: (1) retained earnings of the bank; (2) net income of the bank for its last fiscal year; or (3) net income of the bank for its current fiscal year. However, if the DBO finds that the shareholders’ equity of the bank is not adequate or that the payment of a dividend would be unsafe or unsound, the Commissioner may order the bank not to pay a dividend to shareholders.

Additionally, under FDICIA, a bank may not make any capital distribution, including the payment of dividends, if after making such distribution the bank would be in any of the “undercapitalized” categories under the FDIC’s Prompt Corrective Action regulations. A bank is undercapitalized for this purpose if its leverage ratios, Tier 1 risk-based capital level and total risk-based capital ratio are not at least four percent, four percent and eight percent, respectively.

The FRB, FDIC and the DBO have authority to prohibit a bank holding company or a bank from engaging in practices which are considered to be unsafe and unsound. Depending on the financial condition of TriCo and the Bank and other factors, the FRB, FDIC or the DBO could determine that payment of dividends or other payments by TriCo or the Bank might constitute an unsafe or unsound practice.

Consumer Protection Laws and Regulations

The Company is subject to many federal consumer protection statues and regulations, some of which are discussed below.

The Community Reinvestment Act of 1977 (“CRA”) is intended to encourage insured depository institutions, while operating safely and soundly, to help meet the credit needs of their communities. The CRA specifically directs the federal regulatory agencies to assess a bank’s record of helping meet the credit needs of its entire community, including low- and moderate-income neighborhoods, consistent with safe and sound practices. The CRA further requires the agencies to take a financial institution’s record of meeting its community credit needs into account when evaluating applications for, among other things, domestic branches, mergers or acquisitions, or holding company formations. The federal banking agencies rate depository institutions’ compliance with the Community Reinvestment. The ratings range from a high of “outstanding” to a low of “substantial noncompliance.” A less than “satisfactory” rating would likely result in the suspension of any growth of the Bank through acquisitions or opening de novo branches until the rating is improved. As of its most recent CRA examination, the Bank’s CRA rating was “Satisfactory.”

The Equal Credit Opportunity Act generally prohibits discrimination in any credit transaction, whether for consumer or business purposes, on the basis of race, color, religion, national origin, sex, marital status, age (except in limited circumstances), receipt of income from public assistance programs, or good faith exercise of any rights under the Consumer Credit Protection Act.

The Truth-in-Lending Act is designed to ensure that credit terms are disclosed in a meaningful way so that consumers may compare credit terms more readily and knowledgeably.

The Fair Housing Act regulates many practices, including making it unlawful for any lender to discriminate in its housing-related lending activities against any person because of race, color, religion, national origin, sex, handicap or familial status.

The Home Mortgage Disclosure Act grew out of public concern over credit shortages in certain urban neighborhoods and provides public information that will help show whether financial institutions are serving the housing credit needs of the neighborhoods and communities in which they are located. This act also includes a “fair lending” aspect that requires the collection and disclosure of data about applicant and borrower characteristics as a way of identifying possible discriminatory lending patterns and enforcing anti-discrimination statutes.

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The Real Estate Settlement Procedures Act requires lenders to provide borrowers with disclosures regarding the nature and cost of real estate settlements. Also, this act prohibits certain abusive practices, such as kickbacks, and places limitations on the amount of escrow accounts.

Penalties under the above laws may include fines, reimbursements, injunctive relief and other penalties.

Capital Requirements

Federal regulation imposes upon all financial institutions a variable system of risk-based capital guidelines designed to make capital requirements sensitive to differences in risk profiles among banking organizations, to take into account off-balance sheet exposures and to promote uniformity in the definition of bank capital uniform nationally.

The Bank and the Company are subject to the minimum capital requirements of the FDIC and the FRB, respectively. As a result of these requirements, the growth in assets is limited by the amount of its capital as defined by the respective regulatory agency. Capital requirements may have an effect on profitability and the payment of dividends on the common stock of the Bank and the Company. If an entity is unable to increase its assets without violating the minimum capital requirements or is forced to reduce assets, its ability to generate earnings would be reduced.

The FRB and the FDIC have adopted guidelines utilizing a risk-based capital structure. Qualifying capital is divided into two tiers. Tier 1 capital consists generally of common stockholders’ equity, qualifying noncumulative perpetual preferred stock, qualifying cumulative perpetual preferred stock (up to 25% of total Tier 1 capital) and minority interests in the equity accounts of consolidated subsidiaries, less goodwill and certain other intangible assets. Tier 2 capital consists of, among other things, allowance for loan and lease losses up to 1.25% of weighted risk assets, other perpetual preferred stock, hybrid capital instruments, perpetual debt, mandatory convertible debt securities, subordinated debt and intermediate-term preferred stock. Tier 2 capital qualifies as part of total capital up to a maximum of 100% of Tier 1 capital. Amounts in excess of these limits may be issued but are not included in the calculation of risk-based capital ratios. Under these risk-based capital guidelines in effect as of December 31, 2014, the Bank and the Company are required to maintain capital equal to at least 8% of its assets, of which at least 4% must be in the form of Tier 1 capital.

The guidelines also require the Company and the Bank to maintain a minimum leverage ratio of 4% of Tier 1 capital to total assets (the “leverage ratio”). The leverage ratio is determined by dividing an institution’s Tier 1 capital by its quarterly average total assets, less goodwill and certain other intangible assets. The leverage ratio constitutes a minimum requirement for the most well-run banking organizations. See Note 29 in the financial statements at Item 8 of this report for a discussion about the Company’s risk-based capital and leverage ratios.

New Capital Rules and the Basel Accords

In July, 2013, the federal banking agencies approved final rules that substantially amend the regulatory risk-based capital rules applicable to TriCo and the Bank. The final rules implement the “Basel III” regulatory capital reforms and changes required by the Dodd-Frank Act. “Basel III” refers to two consultative documents released by the Basel Committee on Banking Supervision in December 2009, the rules text released in December 2010, and loss absorbency rules issued in January 2011, which include significant changes to bank capital, leverage and liquidity requirements.

The rules include new risk-based capital and leverage ratios, which will be phased in from 2015 to 2019, and will refine the definition of what constitutes “capital” for purposes of calculating those ratios. The new minimum capital level requirements applicable to TriCo and the Bank as of January 1, 2015 under the final rules are: (i) a new common equity Tier 1 capital ratio of 4.5%; (ii) a Tier 1 capital ratio of 6% (increased from 4%); (iii) a total capital ratio of 8% (unchanged from previous rules); and (iv) a Tier 1 leverage ratio of 4% for all institutions. The final rules also establish a “capital conservation buffer” above the new regulatory minimum capital requirements, which must consist entirely of common equity Tier 1 capital. The capital conservation buffer will be phased-in over four years beginning on January 1, 2016, as follows: the maximum buffer will be 0.625% of risk-weighted assets for 2016, 1.25% for 2017, 1.875% for 2018, and 2.5% for 2019 and thereafter. This will result in the following minimum ratios beginning in 2019: (i) a common equity Tier 1 capital ratio of 7.0%, (ii) a Tier 1 capital ratio of 8.5%, and (iii) a total capital ratio of 10.5%. Under the final rules, institutions are subject to limitations on paying dividends, engaging in share repurchases, and paying discretionary bonuses if its capital level falls below the buffer amount. These limitations establish a maximum percentage of eligible retained income that could be utilized for such actions.

Basel III provided discretion for regulators to impose an additional buffer, the “countercyclical buffer,” of up to 2.5% of common equity Tier 1 capital to take into account the macro-financial environment and periods of excessive credit growth. However, the final rules permit the countercyclical buffer to be applied only to “advanced approach banks” ( i.e., banks with $250 billion or more in total assets or $10 billion or more in total foreign exposures), which currently excludes TriCo and the Bank. The final rules also implement revisions and clarifications consistent with Basel III regarding the various components of Tier 1 capital, including common equity, unrealized gains and losses, as well as certain instruments that will no longer

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qualify as Tier 1 capital, some of which will be phased out over time. However, the final rules provide that small depository institution holding companies with less than $15 billion in total assets as of December 31, 2009 (such as TriCo) will be able to permanently include non-qualifying instruments that were issued and included in Tier 1 or Tier 2 capital prior to May 19, 2010 in additional Tier 1 or Tier 2 capital until they redeem such instruments or until the instruments mature.

The final rules also contain revisions to the prompt corrective action framework, which is designed to place restrictions on insured depository institutions, including the Bank, if their capital levels begin to show signs of weakness. These revisions became effective on January 1, 2015. Under the prompt corrective action requirements, which are designed to complement the capital conservation buffer, insured depository institutions will be required to meet the following increased capital level requirements in order to qualify as “well capitalized:” (i) a new common equity Tier 1 capital ratio of 6.5%; (ii) a Tier 1 capital ratio of 8% (increased from 6%); (iii) a total capital ratio of 10% (unchanged from current rules); and (iv) a Tier 1 leverage ratio of 5% (increased from 4%).

The final rules also set forth certain changes for the calculation of risk-weighted assets, which will be phased in beginning January 1, 2015. The standardized approach final rule utilizes an increased number of credit risk exposure categories and risk weights, and also addresses: (i) an alternative standard of creditworthiness consistent with Section 939A of the Dodd-Frank Act Act; (ii) revisions to recognition of credit risk mitigation; (iii) rules for risk weighting of equity exposures and past due loans; (iv) revised capital treatment for derivatives and repo-style transactions; and (v) disclosure requirements for top-tier banking organizations with $50 billion or more in total assets that are not subject to the “advance approach rules” that apply to banks with greater than $250 billion in consolidated assets. We believe that we were in compliance with the requirements applicable to us as set forth in the final rules as of January 1, 2015.

Prompt Corrective Action

Prompt Corrective Action Regulations of the federal bank regulatory agencies establish five capital categories in descending order (well capitalized, adequately capitalized, undercapitalized, significantly undercapitalized and critically undercapitalized), assignment to which depends upon the institution’s total risk-based capital ratio, Tier 1 risk-based capital ratio, and leverage ratio. Institutions classified in one of the three undercapitalized categories are subject to certain mandatory and discretionary supervisory actions, which include increased monitoring and review, implementation of capital restoration plans, asset growth restrictions, limitations upon expansion and new business activities, requirements to augment capital, restrictions upon deposit gathering and interest rates, replacement of senior executive officers and directors, and requiring divestiture or sale of the institution. The Bank has been classified as well-capitalized since adoption of these regulations.

Deposit Insurance

Deposit accounts in the Bank are insured by the FDIC, generally up to a maximum of $250,000 per separately insured depositor. The Bank’s deposits are subject to FDIC deposit insurance assessments. The Bank pays insurance assessments based on its consolidated total assets less tangible equity capital. The assessment rate is based on the risk category of the institution. To determine the total base assessment rate, the FDIC first establishes an institution’s initial base assessment rate and then adjusts the initial base assessment based upon an institution’s levels of unsecured debt, secured liabilities, and brokered deposits. The total base assessment rate ranges from 2.5 to 45 basis points of the institution’s average consolidated total assets less tangible equity capital.

The Bank is generally unable to control the amount of premiums that it is required to pay for FDIC insurance. If there are additional bank or financial institution failures or if the FDIC otherwise determines, the Bank may be required to pay even higher FDIC premiums than the recently increased levels. These announced increases and any future increases in FDIC insurance premiums may have a material and adverse affect on the Company’s earnings and could have a material adverse effect on the value of, or market for, the Company’s common stock.

The FDIC may terminate a depository institution’s deposit insurance upon a finding that the institution’s financial condition is unsafe or unsound or that the institution has engaged in unsafe or unsound practices that pose a risk to the DIF or that may prejudice the interest of the bank’s depositors. The termination of deposit insurance for the Bank would also result in the revocation of the Bank’s charter by the DBO.

Interstate Branching

The Dodd-Frank Act authorized national and state banks to establish branches in other states to the same extent as a bank chartered by that state would be permitted to branch. Previously, banks could only establish branches in other states if the host state expressly permitted out-of-state banks to establish branches in that state. Accordingly, banks will be able to enter new markets more freely.

Anti-Money Laundering Laws

A series of banking laws and regulations beginning with the bank Secrecy Act in 1970 requires banks to prevent, detect, and report illicit or illegal financial activities to the federal government to prevent money laundering, international drug trafficking, and terrorism. Under the Uniting and Strengthening America by Providing Appropriate Tools Required to

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Intercept and Obstruct Terrorism Act of 2001, financial institutions are subject to prohibitions against specified financial transactions and account relationships, requirements regarding the Customer Identification Program, as well as enhanced due diligence and “know your customer” standards in their dealings with high risk customers, foreign financial institutions, and foreign individuals and entities.

Transactions with Affiliates

Banks are also subject to certain restrictions imposed by the Federal Reserve Act on extensions of credit to executive officers, directors, principal shareholders (including the Company) or any related interest of such persons. Extensions of credit must be made on substantially the same terms, including interest rates and collateral as, and follow credit underwriting procedures that are not less stringent than, those prevailing at the time for comparable transactions with persons not affiliated with the bank, and must not involve more than the normal risk of repayment or present other unfavorable features. Banks are also subject to certain lending limits and restrictions on overdrafts to such persons. Regulation W requires that certain transactions between the Bank and its affiliates, including its holding company, be on terms substantially the same, or at least as favorable to the Bank, as those prevailing at the time for comparable transactions with or involving nonaffiliated companies or, in the absence of comparable transactions, on terms and under circumstances, including credit standards, that in good faith would be offered to or would apply to nonaffiliated companies.

Impact of Monetary Policies

Banking is a business that depends on interest rate differentials. In general, the difference between the interest paid by a bank on its deposits and other borrowings, and the interest rate earned by banks on loans, securities and other interest-earning assets comprises the major source of banks’ earnings. Thus, the earnings and growth of banks are subject to the influence of economic conditions generally, both domestic and foreign, and also to the monetary and fiscal policies of the United States and its agencies, particularly the FRB. The FRB implements national monetary policy, such as seeking to curb inflation and combat recession, by its open-market dealings in United States government securities, by adjusting the required level of reserves for financial institutions subject to reserve requirements and through adjustments to the discount rate applicable to borrowings by banks which are members of the FRB. The actions of the FRB in these areas influence the growth of bank loans, investments and deposits and also affect interest rates. The nature and timing of any future changes in such policies and their impact on the Company cannot be predicted. In addition, adverse economic conditions could make a higher provision for loan losses a prudent course and could cause higher loan loss charge-offs, thus adversely affecting the Company’s net earnings.

ITEM  1A. RISK FACTORS

In analyzing whether to make or continue holding an investment in the Company, investors should consider, among other factors, the following:

Risks Related to the Nature and Geographic Area of Our Business

We are exposed to risks in connection with the loans we make.

A significant source of risk for us arises from the possibility that we will sustain losses because borrowers, guarantors and related parties may fail to perform in accordance with the terms of their loans. Our earnings are significantly affected by our ability to properly originate, underwrite and service loans. We have underwriting and credit monitoring procedures and credit policies, including the establishment and review of the allowance for loan losses, that we believe to be appropriate to minimize this risk by assessing the likelihood of nonperformance, tracking loan performance and diversifying our respective loan portfolios. Such policies and procedures, however, may not prevent unexpected losses that could adversely affect our results of operations. We could sustain losses if we incorrectly assess the creditworthiness of our borrowers or fail to detect or respond to deterioration in asset quality in a timely manner.

Our allowance for loan losses may not be adequate to cover actual losses.

Like other financial institutions, we maintain an allowance for loan losses to provide for loan defaults and non-performance. Our allowance for loan losses may not be adequate to cover actual loan losses, and future provisions for loan losses could materially and adversely affect our business, financial condition, results of operations and cash flows. The allowance for loan losses reflects our estimate of the probable losses in our loan portfolio at the relevant balance sheet date. Our allowance for loan losses is based on prior experience, as well as an evaluation of the known risks in the current portfolio, composition and growth of the loan portfolio and economic factors. The determination of an appropriate level of loan loss allowance is an inherently difficult process and is based on numerous assumptions. The amount of future losses is susceptible to changes in economic, operating and other conditions, including changes in interest rates, that may be beyond our control and these losses may exceed current estimates. Federal and state regulatory agencies, as an integral part of their examination process, review our loans and allowance for loan losses. While we believe that our allowance for loan losses is adequate to cover current losses, we cannot assure you that we will not increase the allowance for loan losses further or that the allowance will be adequate to absorb loan losses we actually incur. Either of these occurrences could have a material adverse affect on our business, financial condition and results of operations.

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Our business may be adversely affected by business conditions in Northern and Central California.

We conduct most of our business in Northern and Central California. As a result of this geographic concentration, our results are impacted by the difficult economic conditions in California. A deterioration in the economic conditions or a prolonged delay in economic recovery in California could result in the following consequences, any of which could have a material adverse effect on our business, financial condition, results of operations and cash flows:

• problem assets and foreclosures may increase,

• demand for our products and services may decline,

• low cost or non-interest bearing deposits may decrease, and

• collateral for loans made by us, especially real estate, may decline in value, in turn reducing customers’ borrowing power, and reducing the value of assets and collateral associated with our existing loans.

In view of the concentration of our operations and the collateral securing our loan portfolio in both Northern and Central California, we may be particularly susceptible to the adverse effects of any of these consequences, any of which could have a material adverse effect on our business, financial condition, results of operations and cash flows.

A significant majority of the loans in our portfolio are secured by real estate and a downturn in our real estate markets could hurt our business.

A downturn in our real estate markets or prolonged delay in economic recovery in California could hurt our business because most of our loans are secured by real estate. Real estate values and real estate markets are generally affected by changes in national, regional or local economic conditions, fluctuations in interest rates and the availability of loans to potential purchasers, changes in tax laws and other governmental statutes, regulations and policies and acts of nature. As real estate prices decline, the value of real estate collateral securing our loans is reduced. As a result, our ability to recover on defaulted loans by foreclosing and selling the real estate collateral could then be diminished and we would be more likely to suffer losses on defaulted loans. As of December 31, 2014, approximately 90.9% of the book value of our loan portfolio consisted of loans collateralized by various types of real estate. Substantially all of our real estate collateral is located in California. So if there is a significant adversely decline in real estate values in California, the collateral for our loans will provide less security. Real estate values could also be affected by, among other things, earthquakes, drought and national disasters in our markets. Any such downturn could have a material adverse effect on our business, financial condition, results of operations and cash flows.

We depend on key personnel and the loss of one or more of those key personnel may materially and adversely affect our prospects.

Competition for qualified employees and personnel in the banking industry is intense and there are a limited number of qualified persons with knowledge of, and experience in, the California community banking industry. The process of recruiting personnel with the combination of skills and attributes required to carry out our strategies is often lengthy. Our success depends to a significant degree upon our ability to attract and retain qualified management, loan origination, finance, administrative, marketing and technical personnel and upon the continued contributions of our management and personnel. In particular, our success has been and continues to be highly dependent upon the abilities of our senior management team of Messrs. Smith, O’Sullivan, Bailey, Reddish, Carney, Rios, Hunter and Ms. Ward, who have expertise in banking and experience in the California markets we serve and have targeted for future expansion. We also depend upon a number of other key executives who are California natives or are long-time residents and who are integral to implementing our business plan. The loss of the services of any one of our senior executive management team or other key executives could have a material adverse effect on our business, financial condition, results of operations and cash flows.

We are exposed to risk of environmental liabilities with respect to properties to which we take title.

In the course of our business, we may foreclose and take title to real estate and could be subject to environmental liabilities with respect to these properties. We may be held liable to a governmental entity or to third parties for property damage, personal injury, investigation and clean-up costs incurred by these parties in connection with environmental contamination, or may be required to investigate or clean-up hazardous or toxic substances, or chemical releases at a property. The costs associated with investigation or remediation activities could be substantial. In addition, if we are the owner or former owner of a contaminated site, we may be subject to common law claims by third parties based on damages and costs resulting from environmental contamination emanating from the property. If we become subject to significant environmental liabilities, our business, financial condition, results of operations and cash flows could be materially adversely affected.

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Strong competition in California could hurt our profits.

Competition in the banking and financial services industry is intense. Our profitability depends upon our continued ability to successfully compete. We compete exclusively in Northern and Central California for loans, deposits and customers with commercial banks, savings and loan associations, credit unions, finance companies, mutual funds, insurance companies, and brokerage and investment banking firms. In particular, our competitors include several major financial companies whose greater resources may afford them a marketplace advantage by enabling them to maintain numerous locations and mount extensive promotional and advertising campaigns. Additionally, banks and other financial institutions with larger capitalization and financial intermediaries not subject to bank regulatory restrictions may have larger lending limits which would allow them to serve the credit needs of larger customers. Areas of competition include interest rates for loans and deposits, efforts to obtain loan and deposit customers and a range in quality of products and services provided, including new technology-driven products and services. Technological innovation continues to contribute to greater competition in domestic and international financial services markets as technological advances enable more companies to provide financial services. We also face competition from out-of-state financial intermediaries that have opened loan production offices or that solicit deposits in our market areas. If we are unable to attract and retain banking customers, we may be unable to continue our loan growth and level of deposits and our business, financial condition, results of operations and cash flows may be adversely affected.

Our previous results may not be indicative of our future results.

We may not be able to sustain our historical rate of growth and level of profitability or may not even be able to grow our business or continue to be profitable at all. Various factors, such as economic conditions, regulatory and legislative considerations and competition, may also impede or prohibit our ability to expand our market presence and financial performance. If we experience a significant decrease in our historical rate of growth, our results of operations and financial condition may be adversely affected due to a high percentage of our operating costs being fixed expenses.

We may be adversely affected by the soundness of other financial institutions.

Financial services institutions are interrelated as a result of clearing, counterparty, or other relationships. We have exposure to many different industries and counterparties, and routinely executes transactions with counterparties in the financial services industry, including commercial banks, brokers and dealers, and other institutional clients. Many of these transactions expose us to credit risk in the event of a default by a counterparty or client. In addition, our credit risk may be exacerbated when the collateral that we hold cannot be realized upon or is liquidated at prices not sufficient to recover the full amount of the credit or derivative exposure due to us. Any such losses could have a material adverse affect on our financial condition and results of operations.

Recent health care legislation could increase our expenses or require us to pass further costs on to our employees, which could adversely affect our operations, financial condition and earnings.

Legislation enacted in 2010 requires companies to provide expanded health care coverage to their employees, such as affordable coverage to part-time employees and coverage to dependent adult children of employees. Companies will also be required to enroll new employees automatically into their health plans. Compliance with these and other new requirements of the health care legislation will increase our employee benefits expense, and may require us to pass these costs on to our employees, which could give us a competitive disadvantage in hiring and retaining qualified employees.

Our business may be adversely affected the continuing drought in California.

California is experiencing the fourth year of a severe drought. A considerable portion of our borrowers are involved in, or are impacted to some extent by, the agricultural industry, which is dependent on water. Agriculture operating loans comprised $34.8 million and $33.5 million, or 1.5% and 2.0%, of our loan portfolio at December 31, 2014 and 2013, respectively. We also originate agriculture real estate loans, which comprised $67.7 million and $55.5 million or 3.0% and 3.3% of our loan portfolio at December 31, 2014 and 2013. As a result of the drought, there are various governmental proposals concerning the distribution or rationing of water. If the amount of water available to agriculture in our market areas becomes increasingly scarce due to drought, rationing and/or diversion, growers may not be able to continue to produce agricultural products at a reasonable profit, which has the potential to force many out of business. While many of our borrowers are not directly involved in agriculture, they could be impacted by difficulties in the agricultural industry because many jobs in our market areas are ancillary to the production, processing, marketing and sales of agricultural products. The drought has the potential to adversely affect agricultural industries as well as consumer purchasing power, and could lead to further unemployment throughout our market area. The drought therefore could have a material adverse effect on our business, financial condition, results of operations and asset quality.

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Market and Interest Rate Risk

Low interest rates could hurt our profits.

Our ability to earn a profit, like that of most financial institutions, depends on our net interest income, which is the difference between the interest income we earn on our interest-earning assets, such as mortgage loans and investments, and the interest expense we pay on our interest-bearing liabilities, such as deposits. Our profitability depends on our ability to manage our assets and liabilities during periods of changing market interest rates. Recently, the FRB has maintained the targeted federal funds rate at record low levels. A sustained decrease in market interest rates could adversely affect our earnings. When interest rates decline, borrowers tend to refinance higher-rate, fixed-rate loans at lower rates. Under those circumstances, we would not be able to reinvest those prepayments in assets earning interest rates as high as the rates on the prepaid loans on investment securities. In addition, our commercial real estate and commercial loans, which carry interest rates that adjust in accordance with changes in the prime rate, will adjust to lower rates.

Our business is subject to interest rate risk and variations in interest rates may negatively affect our financial performance.

Because of the differences in the maturities and repricing characteristics of our interest-earning assets and interest-bearing liabilities, changes in interest rates do not produce equivalent changes in interest income earned on interest-earning assets and interest paid on interest-bearing liabilities. Accordingly, fluctuations in interest rates could adversely affect our interest rate spread and, in turn, our profitability. In addition, loan origination volumes are affected by market interest rates. Rising interest rates, generally, are associated with a lower volume of loan originations while lower interest rates are usually associated with higher loan originations. Conversely, in rising interest rate environments, loan repayment rates may decline and in falling interest rate environments, loan repayment rates may increase. Although we have been successful in generating new loans during 2013, the continuation of historically low long-term interest rate levels may cause additional refinancing of commercial real estate and 1-4 family residence loans, which may depress our loan volumes or cause rates on loans to decline. In addition, an increase in the general level of short-term interest rates on variable rate loans may adversely affect the ability of certain borrowers to pay the interest on and principal of their obligations or reduce the amount they wish to borrow. Additionally, if short-term market rates rise, in order to retain existing deposit customers and attract new deposit customers we may need to increase rates we pay on deposit accounts. Accordingly, changes in levels of market interest rates could materially and adversely affect our net interest spread, asset quality, loan origination volume, business, financial condition, results of operations and cash flows.

Regulatory Risks

Recently enacted financial reform legislation has, among other things, created a new Consumer Financial Protection Bureau, tightened capital standards and resulted in new laws and regulations that are expected to increase our costs of operations.

The Dodd-Frank Act, which was enacted in 2010, significantly changed the current bank regulatory structure and affects the lending, deposit, investment, trading and operating activities of financial institutions and their holding companies. Among other things, the Dodd-Frank Act created a new Consumer Financial Protection Bureau with broad powers to supervise and enforce consumer protection laws. The CFPB has broad rule-making authority for a wide range of consumer protection laws that apply to all banks and savings institutions, including the authority to prohibit “unfair, deceptive or abusive” acts and practices. The CFPB has examination and enforcement authority over all banks and savings institutions with more than $10 billion in assets. Banks such as the Bank with $10 billion or less in assets will continue to be examined for compliance with the consumer laws by their primary bank regulators. The Dodd-Frank Act also weakens the federal preemption rules that have been applicable for national banks and federal savings associations, and gives state attorneys general the ability to enforce federal consumer protection laws.

It is difficult to predict the continuing impact that the Dodd-Frank Act and the yet to be written implementing rules and regulations will have on community banks. However, it is expected that at a minimum they will increase our operating and compliance costs and could increase our interest expense.

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We operate in a highly regulated environment and we may be adversely affected by changes in laws and regulations. Regulations may prevent or impair our ability to pay dividends, engage in acquisitions or operate in other ways.

We are subject to extensive regulation, supervision and examination by the DBO, FDIC, and the FRB. See Item 1—Regulation and Supervision of this report for information on the regulation and supervision which governs our activities. Regulatory authorities have extensive discretion in their supervisory and enforcement activities, including the imposition of restrictions on our operations, the classification of our assets and determination of the level of our allowance for loan losses. Banking regulations, designed primarily for the protection of depositors, may limit our growth and the return to our shareholders by restricting certain of our activities, such as:

• the payment of dividends to our shareholders,

• possible mergers with or acquisitions of or by other institutions,

• desired investments,

• loans and interest rates on loans,

• interest rates paid on deposits,

• the possible expansion of branch offices, and

• the ability to provide securities or trust services.

We also are subject to capitalization guidelines set forth in federal legislation and could be subject to enforcement actions to the extent that we are found by regulatory examiners to be undercapitalized. We cannot predict what changes, if any, will be made to existing federal and state legislation and regulations or the effect that such changes may have on our future business and earnings prospects. Any change in such regulation and oversight, whether in the form of regulatory policy, regulations, legislation or supervisory action, may have a material impact on our operations.

Compliance with changing regulation of corporate governance and public disclosure may result in additional risks and expenses.

Changing laws, regulations and standards relating to corporate governance and public disclosure, including the Dodd-Frank Act, the Sarbanes-Oxley Act of 2002 and new SEC regulations, are creating additional expense for publicly-traded companies such as TriCo. The application of these laws, regulations and standard may evolve over time as new guidance is provided by regulatory and governing bodies, which could result in continuing uncertainty regarding compliance matters and higher costs necessitated by ongoing revisions to disclosure and governance practices. We are committed to maintaining high standards of corporate governance and public disclosure. As a result, our efforts to comply with evolving laws, regulations and standards have resulted in, and are likely to continue to result in, increased expenses and a diversion of management time and attention. In particular, our efforts to comply with Section 404 of the Sarbanes-Oxley Act of 2002 and the related regulations regarding management’s required assessment of its internal control over financial reporting and its external auditors’ audit of that assessment has required the commitment of significant financial and managerial resources. We expect these efforts to require the continued commitment of significant resources. Further, the members of our board of directors, members of our audit or compensation and management succession committees, our chief executive officer, our chief financial officer and certain other executive officers could face an increased risk of personal liability in connection with the performance of their duties. It may also become more difficult and more expensive to obtain director and officer liability insurance. As a result, our ability to attract and retain executive officers and qualified board and committee members could be more difficult.

We could be adversely affected by new regulations.

Federal and state governments and regulators could pass legislation and adopt policies responsive to current credit conditions that would have an adverse affect on the Company and its financial performance. For example, the Company could experience higher credit losses because of federal or state legislation or regulatory action that limits the Bank’s ability to foreclose on property or other collateral or makes foreclosure less economically feasible.

Risks Related to Growth and Expansion

We may fail to realize anticipated cost savings for the merger with North Valley Bancorp or to integrate the business operations and managements of our two companies in an efficient manner.

We acquired North Valley Bancorp and its subsidiary, North Valley Bank, on October 3, 2014. The success of the acquisition will depend, in part, on our ability to realize anticipated cost savings and to combine the businesses of TriCo and North Valley Bancorp in a manner that permits growth opportunities to be realized and does not materially disrupt the existing customer relationships of the Tri Counties Bank or North Valley Bank, nor result in decreased revenues due to any loss of customers.

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To realize these anticipated benefits, the businesses of TriCo and North Valley and Tri Counties Bank and North Valley Bank must be successfully combined. While management has taken existing leases and other contractual obligations into consideration in developing its estimate of cost savings, changes in transaction volumes, operating systems and procedures and other factors may cause the actual cost savings to be different from these estimates. In addition, difficulties encountered in integrating our information systems could delay or prevent us from realizing some of the estimated cost savings. Such difficulties could also jeopardize customer relationships and cause a loss of deposits or loan customers and the revenue associated with those customers. It is possible that the integration process could result in the loss of key employees, as well as the disruption of each company’s ongoing businesses or inconsistencies in standards, controls, procedures and policies, any or all of which could adversely affect our ability to maintain relationships with customers and employees after the Merger or to achieve the anticipated benefits of the Merger . Integration efforts may also divert management attention and resources. A failure to successfully navigate the complicated integration process could have an adverse effect on the combined companies or the combined company. If the combined company is not able to achieve these cost-savings objectives, the anticipated benefits of the Merger may not be realized fully or at all or may take longer to realize than expected.

Goodwill resulting from the acquisition of North Valley Bancorp may adversely affect our results of operations.

Goodwill and other intangible assets are expected to increase substantially as a result of the acquisition of North Valley Bancorp. Potential impairment of goodwill and amortization of other intangible assets could adversely affect our financial condition and results of operations. We assess our goodwill and other intangible assets and long-lived assets for impairment annually and more frequently when required by U.S. GAAP. We are required to record an impairment charge if circumstances indicate that the asset carrying values exceed their fair values. Our assessment of goodwill, other intangible assets, or long-lived assets could indicate that an impairment of the carrying value of such assets may have occurred that could result in a material, non-cash write-down of such assets, which could have a material adverse effect on our results of operations and future earnings.

If we cannot attract deposits, our growth may be inhibited.

We plan to increase the level of our assets, including our loan portfolio. Our ability to increase our assets depends in large part on our ability to attract additional deposits at favorable rates. We intend to seek additional deposits by offering deposit products that are competitive with those offered by other financial institutions in our markets and by establishing personal relationships with our customers. We cannot assure that these efforts will be successful. Our inability to attract additional deposits at competitive rates could have a material adverse effect on our business, financial condition, results of operations and cash flows.

There are potential risks associated with future acquisitions and expansions.

We intend to continue to explore expanding our branch system through opening new bank branches and in-store branches in existing or new markets in Northern and Central California. In the ordinary course of business, we evaluate potential branch locations that would bolster our ability to cater to the small business, individual and residential lending markets in California. Any given new branch, if and when opened, will have expenses in excess of revenues for varying periods after opening that may adversely affect our results of operations or overall financial condition.

In addition, to the extent that we acquire other banks in the future, our business may be negatively impacted by certain risks inherent with such acquisitions. These risks include:

• incurring substantial expenses in pursuing potential acquisitions without completing such acquisitions,

• losing key clients as a result of the change of ownership,

• the acquired business not performing in accordance with our expectations,

• difficulties arising in connection with the integration of the operations of the acquired business with our operations,

• needing to make significant investments and infrastructure, controls, staff, emergency backup facilities or other critical business functions that become strained by our growth,

• management needing to divert attention from other aspects of our business,

• potentially losing key employees of the acquired business,

• incurring unanticipated costs which could reduce our earnings per share,

• assuming potential liabilities of the acquired company as a result of the acquisition, and

• an acquisition may dilute our earnings per share, in both the short and long term, or it may reduce our tangible capital ratios.

As result of these risks, any given acquisition, if and when consummated, may adversely affect our results of operations or financial condition. In addition, because the consideration for an acquisition may involve cash, debt or the issuance of shares of our stock and may involve the payment of a premium over book and market values, existing shareholders may experience dilution in connection with any acquisition.

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Our growth and expansion may strain our ability to manage our operations and our financial resources.

Our financial performance and profitability depend on our ability to execute our corporate growth strategy. In addition to seeking deposit and loan and lease growth in our existing markets, we may pursue expansion opportunities in new markets. Continued growth, however, may present operating and other problems that could adversely affect our business, financial condition, results of operations and cash flows. Accordingly, there can be no assurance that we will be able to execute our growth strategy or maintain the level of profitability that we have recently experienced.

Our growth may place a strain on our administrative, operational and financial resources and increase demands on our systems and controls. This business growth may require continued enhancements to and expansion of our operating and financial systems and controls and may strain or significantly challenge them. In addition, our existing operating and financial control systems and infrastructure may not be adequate to maintain and effectively monitor future growth. Our continued growth may also increase our need for qualified personnel. We cannot assure you that we will be successful in attracting, integrating and retaining such personnel.

Our decisions regarding the fair value of assets acquired from North Valley Bancorp, Citizens Bank of Northern California and Granite Community Bank, including the FDIC loss sharing assets associated with Granite, could be inaccurate which could materially and adversely affect our business, financial condition, results of operations, and future prospects.

Management makes various assumptions and judgments about the collectability of acquired loans, including the creditworthiness of borrowers and the value of the real estate and other assets serving as collateral for the repayment of secured loans. In FDIC-assisted acquisitions that include loss sharing agreements, such as our acquisition of Granite Community Bank, we may record a loss sharing asset that we consider adequate to absorb future losses which may occur in the acquired loan portfolio. In determining the size of the loss sharing asset, we analyze the loan portfolio based on historical loss experience, volume and classification of loans, volume and trends in delinquencies and nonaccruals, local economic conditions, and other pertinent information.

If our assumptions are incorrect, the balance of the FDIC indemnification asset may at any time be insufficient to cover future loan losses, and credit loss provisions may be needed to respond to different economic conditions or adverse developments in the acquired loan portfolio. Any increase in future loan losses could have a negative effect on our operating results.

Our ability to obtain reimbursement under the loss sharing agreement on covered assets purchased from the FDIC depends on our compliance with the terms of the loss sharing agreement.

We must certify to the FDIC on a quarterly basis our compliance with the terms of the FDIC loss sharing agreement as a prerequisite to obtaining reimbursement from the FDIC for realized losses on covered assets. The required terms of the agreements are extensive and failure to comply with any of the guidelines could result in a specific asset or group of assets permanently losing their loss sharing coverage. Additionally, Management may decide to forgo loss share coverage on certain assets to allow greater flexibility over the management of certain assets. As of December 31, 2014, $22,713,000, or 0.6%, of the Company’s assets were covered by these FDIC loss sharing agreements.

Risks Relating to Dividends and Our Common Stock

Our future ability to pay dividends is subject to restrictions.

Since we are a holding company with no significant assets other than the Bank, we currently depend upon dividends from the Bank for a substantial portion of our revenues. Our ability to continue to pay dividends in the future will continue to depend in large part upon our receipt of dividends or other capital distributions from the Bank. The ability of the Bank to pay dividends or make other capital distributions to us is subject to the restrictions in the California Financial Code and the DBO. As of December 31, 2014, the Bank could have paid $52,798,000 in dividends without the prior approval of the DBO. The amount that the Bank may pay in dividends is further restricted due to the fact that the Bank must maintain a certain minimum amount of capital to be considered a “well capitalized” institution as further described under Item 1 - Capital Requirements in this report.

From time to time, we may become a party to financing agreements or other contractual arrangements that have the effect of limiting or prohibiting us or the Bank from declaring or paying dividends. Our holding company expenses and obligations with respect to our trust preferred securities and corresponding junior subordinated deferrable interest debentures issued by us may limit or impair our ability to declare or pay dividends. Finally, our ability to pay dividends is also subject to the restrictions of the California Corporations Code. See “Regulation and Supervision – Restrictions on Dividends and Distributions”.

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Only a limited trading market exists for our common stock, which could lead to price volatility.

Our common stock is quoted on Nasdaq and trading volumes have been modest. The limited trading market for our common stock may cause fluctuations in the market value of our common stock to be exaggerated, leading to price volatility in excess of that which would occur in a more active trading market of our common stock. In addition, even if a more active market in our common stock develops, we cannot assure you that such a market will continue or that shareholders will be able to sell their shares.

Anti-takeover provisions and federal law may limit the ability of another party to acquire us, which could cause our stock price to decline.

Various provisions of our articles of incorporation and bylaws could delay or prevent a third party from acquiring us, even if doing so might be beneficial to our shareholders. These provisions provide for, among other things:

• specified actions that the Board of Directors shall or may take when an offer to merge, an offer to acquire all assets or a tender offer is received,

• advance notice requirements for proposals that can be acted upon at shareholder meetings, and

• the authorization to issue preferred stock by action of the board of directors acting alone, thus without obtaining shareholder approval.

The BHC Act and the Change in Bank Control Act of 1978, as amended, together with federal regulations, require that, depending on the particular circumstances, either FRB approval must be obtained or notice must be furnished to the FRB and not disapproved prior to any person or entity acquiring “control” of a bank holding company such as TriCo. These provisions may prevent a merger or acquisition that would be attractive to shareholders and could limit the price investors would be willing to pay in the future for our common stock.

The amount of common stock owned by, and other compensation arrangements with, our officers and directors may make it more difficult to obtain shareholder approval of potential takeovers that they oppose.

As of December 31, 2014, directors and executive officers beneficially owned approximately 10.7% of our common stock and our Employee Stock Ownership Plan owned approximately 5.8%. Agreements with our senior management also provide for significant payments under certain circumstances following a change in control. These compensation arrangements, together with the common stock and option ownership of our board of directors and management, could make it difficult or expensive to obtain majority support for shareholder proposals or potential acquisition proposals of us that our directors and officers oppose.

We may issue additional common stock or other equity securities in the future which could dilute the ownership interest of existing shareholders.

In order to maintain our capital at desired or regulatorily-required levels, or to fund future growth, our board of directors may decide from time to time to issue additional shares of common stock, or securities convertible into, exchangeable for or representing rights to acquire shares of our common stock. The sale of these shares may significantly dilute your ownership interest as a shareholder. New investors in the future may also have rights, preferences and privileges senior to our current shareholders which may adversely impact our current shareholders.

Holders of our junior subordinated debentures have rights that are senior to those of our common stockholders.

We have supported our continued growth through the issuance of trust preferred securities from special purpose trusts and accompanying junior subordinated debentures. At December 31, 2014, we had outstanding trust preferred securities and accompanying junior subordinated debentures with face value of $62,889,000. Payments of the principal and interest on the trust preferred securities are conditionally guaranteed by us. Further, the accompanying junior subordinated debentures we issued to the trusts are senior to our shares of common stock. As a result, we must make payments on the junior subordinated debentures before any dividends can be paid on our common stock and, in the event of our bankruptcy, dissolution or liquidation, the holders of the junior subordinated debentures must be satisfied before any distributions can be made on our common stock.

15

Risks Relating to Systems, Accounting and Internal Controls

If we fail to maintain an effective system of internal and disclosure controls, we may not be able to accurately report our financial results or prevent fraud. As a result, current and potential shareholders could lose confidence in our financial reporting, which would harm our business and the trading price of our securities.

Effective internal control over financial reporting and disclosure controls and procedures are necessary for us to provide reliable financial reports and effectively prevent fraud and to operate successfully as a public company. If we cannot provide reliable financial reports or prevent fraud, our reputation and operating results would be harmed. We continually review and analyze our internal control over financial reporting for Sarbanes-Oxley Section 404 compliance. As part of that process we may discover material weaknesses or significant deficiencies in our internal control as defined under standards adopted by the Public Company Accounting Oversight Board that require remediation. Material weakness is a deficiency, or combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of the company’s annual or interim financial statements will not be prevented or detected in a timely basis. Significant deficiency is a deficiency or combination of deficiencies, in internal control over financial reporting that is less severe than material weakness, yet important enough to merit attention by those responsible for the oversight of the Company’s financial reporting.

As a result of weaknesses that may be identified in our internal control, we may also identify certain deficiencies in some of our disclosure controls and procedures that we believe require remediation. If we discover weaknesses, we will make efforts to improve our internal and disclosure control. However, there is no assurance that we will be successful. Any failure to maintain effective controls or timely effect any necessary improvement of our internal and disclosure controls could harm operating results or cause us to fail to meet our reporting obligations, which could affect our ability to remain listed with Nasdaq. Ineffective internal and disclosure controls could also cause investors to lose confidence in our reported financial information, which would likely have a negative effect on the trading price of our securities.

We rely on communications, information, operating and financial control systems technology and we may suffer an interruption in or breach of the security of those systems.

We rely heavily on our communications, information, operating and financial control systems technology to conduct our business. We rely on third party services providers to provide many of these systems. Any failure, interruption or breach in security of these systems could result in failures or interruptions in our customer relationship management, general ledger, deposit, servicing and loan origination systems. We cannot assure you that such failures, interruptions or security breaches will not occur or, if they do occur, that they will be adequately addressed by us or the third parties service providers on which we rely. The occurrence of any failures, interruptions or security breaches could damage our reputation, result in a loss of customers, expose us to possible financial liability, lead to additional regulatory scrutiny or require that we make expenditures for remediation or prevention. Any of these circumstances could have a material adverse effect on our business, financial condition, results of operations and cash flows.

A failure to implement technological advances could negatively impact our business.

The banking industry is undergoing technological changes with frequent introductions of new technology-driven products and services. In addition to improving customer services, the effective use of technology increases efficiency and enables financial institutions to reduce costs. Our future success will depend, in part, on our ability to address the needs of our customers by using technology to provide products and services that will satisfy customer demands for convenience as well as to create additional efficiencies in our operations. Many of our competitors have substantially greater resources than we do to invest in technological improvements. We may not be able to effectively implement new technology-driven products and services or successfully market such products and services to our customers.

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

ITEM 2. PROPERTIES

The Company is engaged in the banking business through 81 offices in 26 counties in Northern and Central California including thirteen offices in Shasta County, nine in Butte County, six in Sacramento and Nevada Counties, five in Placer and Humboldt Counties, three each in Stanislaus, Siskiyou, and Sutter Counties, two each in Glenn, Mendocino and Trinity Counties, and one each in Colusa, Contra Costa, Del Norte, Fresno, Kern, Lake, Lassen, Madera, Merced, Sonoma, Tehama, Tulare, Yolo and Yuba Counties. All offices are constructed and equipped to meet prescribed security requirements.

The Company owns twenty-nine branch office locations, five administrative buildings, two other buildings that it leases out and two that are for sale. The Company leases forty-four branch office locations, and three administrative locations. Most of the leases contain multiple renewal options and provisions for rental increases, principally for changes in the cost of living index, property taxes and maintenance.

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ITEM 3. LEGAL PROCEEDINGS

The Bank owns 13,396 shares of Class B common stock of Visa Inc. which are convertible into Class A common stock at a conversion ratio of 0.4121 per Class A share. As of December 31, 2014, the value of the Class A shares was $262.20 per share. Utilizing the conversion ratio, the value of unredeemed Class A equivalent shares owned by the Bank was $1,447,000 as of December 31, 2014, and has not been reflected in the accompanying financial statements. The shares of Visa Class B common stock are restricted and may not be transferred. Visa Member Banks are required to fund an escrow account to cover settlements, resolution of pending litigation and related claims. If the funds in the escrow account are insufficient to settle all the covered litigation, Visa may sell additional Class A shares, use the proceeds to settle litigation, and further reduce the conversion ratio. If funds remain in the escrow account after all litigation is settled, the Class B conversion ratio will be increased to reflect that surplus.

On January 24, 2014, a putative shareholder class action lawsuit was filed against TriCo, North Valley Bancorp and certain other defendants in connection with TriCo entering into the merger agreement with North Valley Bancorp. The lawsuit, which was filed in the Shasta County, California Superior Court, alleges that the members of the North Valley Bancorp board of directors breached their fiduciary duties to North Valley Bancorp shareholders by approving the proposed merger for inadequate consideration; approving the transaction in order receive benefits not equally shared by other North Valley Bancorp shareholders; entering into the merger agreement containing preclusive deal protection devices; and failing to take steps to maximize the value to be paid to the North Valley Bancorp shareholders. The lawsuit alleges claims against TriCo for aiding and abetting these alleged breaches of fiduciary duties. The plaintiff seeks, among other things, declaratory and injunctive relief concerning the alleged breaches of fiduciary duties injunctive relief prohibiting consummation of the merger, rescission, attorneys’ of the merger agreement, fees and costs, and other and further relief. On July 31, 2014 the defendants entered into a memorandum of understanding with the plaintiffs regarding the settlement of this lawsuit. In connection with the settlement contemplated by the memorandum of understanding and in consideration for the full settlement and release of all claims, TriCo and North Valley Bancorp agreed to make certain additional disclosures related to the proposed merger, which are contained in a Current Report on Form 8-K filed by each of the companies. The memorandum of understanding contemplates that the parties will negotiate in good faith and use their reasonable best efforts to enter into a stipulation of settlement. The stipulation of settlement will be subject to customary conditions, including court approval following notice to North Valley Bancorp’s shareholders. In the event that the parties enter into a stipulation of settlement, a hearing will be scheduled at which the court will consider the settlement. There can be no assurance that the parties will ultimately enter into a stipulation of settlement or that the court will approve the settlement even if the parties were to enter into such stipulation. In such event, the proposed settlement as contemplated by the memorandum of understanding may be terminated.

On September 15, 2014, a former Personal Banker at one of the Bank’s in-store branches filed a Class Action Complaint against the Bank in Butte County Superior Court, alleging causes of action related to the observance of meal periods. Plaintiff seeks to represent a class of “current and former hourly-paid or non-exempt ‘personal bankers’, or employees with the same or similar job duties, employed by Defendants within the State of California during the preceding four years.” The Bank filed an Answer to the Complaint on November 6, 2014, denies the charges, and the Bank intends to vigorously defend the lawsuit against class certification and liability.

On January 20, 2015, a current Personal Banker at one of the Bank’s in-store branches filed a First Amended Complaint against Tri Counties Bank and TriCo Bancshares, dba Tri Counties Bank, in Sacramento County Superior Court, alleging causes of action related to wage statement violations. Plaintiff seeks to represent a class of current and former exempt and non-exempt employees who worked for the Bank “during the time period beginning October 18, 2013 through the date of the filing of this action”. The Company and the Bank have not yet responded to the First Amended Complaint, deny the charges, and intend to vigorously defend the lawsuit against class certification and liability.

Neither the Company nor its subsidiaries, are party to any other material pending legal proceeding, nor is their property the subject of any material pending legal proceeding, except routine legal proceedings arising in the ordinary course of their business. None of these proceedings is expected to have a material adverse impact upon the Company’s business, consolidated financial position or results of operations.

ITEM 4. MINE SAFETY DISCLOSURES

Inapplicable.

17

PART II

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Common Stock Market Prices and Dividends

The Company’s common stock is traded on the Nasdaq under the symbol “TCBK.” The following table shows the high and the low closing sale prices for the common stock for each quarter in the past two years, as reported by Nasdaq:

	High		Low
2014:
Fourth quarter	$	26.37	$	22.43
Third quarter	$	24.19	$	21.70
Second quarter	$	26.12	$	22.44
First quarter	$	28.37	$	23.85
2013:
Fourth quarter	$	28.76	$	22.50
Third quarter	$	23.07	$	20.50
Second quarter	$	21.75	$	15.77
First quarter	$	17.90	$	16.31

As of February 27, 2015 there were approximately 1,712 shareholders of record of the Company’s common stock. On February 27, 2015, the closing sales price was $23.90.

The Company has paid cash dividends on its common stock in every quarter since March 1990, and it is currently the intention of the Board of Directors of the Company to continue payment of cash dividends on a quarterly basis. There is no assurance, however, that any dividends will be paid since they are dependent upon earnings, financial condition and capital requirements of the Company and the Bank. As of December 31, 2014, $52,798,000 was available for payment of dividends by the Bank to the Company, under applicable laws and regulations. The Company paid cash dividends of $0.11 per common share in each of the quarters ended December 31, 2014, September 30, 2014, June 30, 2014, March 31, 2014, December 31, 2013, September 30, 2013, June 30, 2013, and $0.09 per common share in the quarter ended March 31, 2013.

Issuer Repurchase of Common Stock

The Company adopted a stock repurchase plan on August 21, 2007 for the repurchase of up to 500,000 shares of the Company’s common stock from time to time as market conditions allow. The 500,000 shares authorized for repurchase under this plan represented approximately 3.2% of the Company’s approximately 15,815,000 common shares outstanding as of August 21, 2007. This plan has no stated expiration date for the repurchases. As of December 31, 2014, the Company had purchased 166,600 shares under this plan.

The following table shows the repurchases made by the Company or any affiliated purchaser (as defined in Rule 10b-18(a)(3) under the Exchange Act) during the fourth quarter of 2014:

Period	(a) Total number of shares purchased(1)		(b) Average price paid per share		(c) Total number of shares purchased as of part of publicly announced plans or programs		(d) Maximum number shares that may yet be purchased under the plans or programs(2)
Oct. 1-31, 2014		—		—		—		333,400
Nov. 1-30, 2014		—		—		—		333,400
Dec. 1-31, 2014		37,647	$	24.99		—		333,400
Total		37,647	$	24.99		—		333,400

(1) Includes shares purchased by the Company’s Employee Stock Ownership Plan and pursuant to various other equity incentive plans.

(2) Does not include shares that may be purchased pursuant to various equity incentive plans.

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The following graph presents the cumulative total yearly shareholder return from investing $100 on December 31, 2009, in each of TriCo common stock, the Russell 3000 Index, and the SNL Western Bank Index. The SNL Western Bank Index compiled by SNL Financial includes banks located in California, Oregon, Washington, Montana, Hawaii and Alaska with market capitalization similar to that of TriCo’s. The amounts shown assume that any dividends were reinvested.

	Period Ending
Index	12/31/09		12/31/10		12/31/11		12/31/12		12/31/13		12/31/14
TriCo Bancshares		100.00		99.37		89.77		108.11		186.67		165.54
Russell 3000		100.00		116.93		118.13		137.52		183.66		206.72
SNL Western Bank		100.00		113.31		102.37		129.18		181.76		218.14

Equity Compensation Plans

The following table shows shares reserved for issuance for outstanding options, stock appreciation rights and warrants granted under our equity compensation plans as of December 31, 2014. All of our equity compensation plans have been approved by shareholders.

Plan category	(a) Number of securities to be issued upon exercise of outstanding options, warrants and rights		(b) Weighted average exercise price of outstanding options, warrants and rights		(c) Number of securities remaining available for issuance under equity compensation plans (excluding securities reflected in column (a))
Equity compensation plans not approved by shareholders		—		—		—
Equity compensation plans approved by shareholders		1,102,850	$	18.25		822,428
Total		1,102,850	$	18.25		822,428

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ITEM 6. SELECTED FINANCIAL DATA

The following selected consolidated financial data are derived from our consolidated financial statements. This data should be read in connection with our consolidated financial statements and the related notes located at Item 8 of this report.

TRICO BANCSHARES

Financial Summary

(in thousands, except per share amounts)

Year ended December 31,	2014			2013			2012			2011			2010
Interest income	$	121,115		$	106,560		$	108,716		$	102,982		$	104,572
Interest expense		4,681			4,696			7,344			10,238			14,133
Net interest income		116,434			101,864			101,372			92,744			90,439
(Benefit from) provision for loan losses		(4,045	)		(715	)		9,423			23,060			37,458
Noninterest income		34,516			36,829			37,980			42,813			32,695
Noninterest expense		110,379			93,604			97,998			82,715			77,205
Income before income taxes		44,616			45,804			31,931			29,782			8,471
Provision for income taxes		18,508			18,405			12,937			11,192			2,466
Net income	$	26,108		$	27,399		$	18,994		$	18,590		$	6,005
Earnings per share:
Basic	$	1.47		$	1.71		$	1.19		$	1.17		$	0.38
Diluted	$	1.46		$	1.69		$	1.18		$	1.16		$	0.37
Per share:
Dividends paid	$	0.44		$	0.42		$	0.36		$	0.36		$	0.40
Book value at December 31	$	18.41		$	15.61		$	14.33		$	13.55		$	12.64
Tangible book value at December 31	$	15.31		$	14.59		$	13.30		$	12.49		$	11.62
Average common shares outstanding		17,716			16,045			15,988			15,935			15,860
Average diluted common shares outstanding		17,923			16,197			16,052			16,000			16,010
Shares outstanding at December 31		22,715			16,077			16,001			15,979			15,860
At December 31:
Loans, net of allowance	$	2,245,939		$	1,633,762		$	1,522,175		$	1,505,118		$	1,377,000
Total assets		3,916,458			2,744,066			2,609,269			2,555,597			2,189,789
Total deposits		3,380,423			2,410,483			2,289,702			2,190,536			1,852,173
Other borrowings		9,276			6,335			9,197			72,541			62,020
Junior subordinated debt		56,272			41,238			41,238			41,238			41,238
Shareholders’ equity		418,172			250,946			229,359			216,441			200,397
Financial Ratios:
For the year:
Return on average assets		0.87	%		1.04	%		0.75	%		0.82	%		0.27	%
Return on average equity		8.67	%		11.34	%		8.44	%		8.93	%		2.94	%
Net interest margin1		4.17	%		4.18	%		4.32	%		4.43	%		4.45	%
Net loan (recoveries) losses to average loans		(0.13	)%		0.23	%		0.82	%		1.37	%		2.07	%
Efficiency ratio2		72.9	%		67.32	%		70.19	%		60.88	%		62.49	%
Average equity to average assets		10.00	%		9.21	%		8.91	%		9.15	%		9.25	%
At December 31:
Equity to assets		10.68	%		9.15	%		8.79	%		8.47	%		9.15	%
Total capital to risk-adjusted assets		15.63	%		14.77	%		14.53	%		13.94	%		14.20	%

¹  Fully taxable equivalent.

²  The sum of fully taxable equivalent net interest income and noninterest income divided by noninterest expense.

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ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

General

As TriCo Bancshares has not commenced any business operations independent of the Bank, the following discussion pertains primarily to the Bank. Average balances, including such balances used in calculating certain financial ratios, are generally comprised of average daily balances for the Company. Within Management’s Discussion and Analysis of Financial Condition and Results of Operations, interest income and net interest income are generally presented on a fully tax-equivalent (FTE) basis. The presentation of interest income and net interest income on a FTE basis is a common practice within the banking industry. Interest income and net interest income are shown on a non-FTE basis in this Item 7 this report, and a reconciliation of the FTE and non-FTE presentations is provided below in the discussion of net interest income.

Critical Accounting Policies and Estimates

The Company’s discussion and analysis of its financial condition and results of operations are based upon its consolidated financial statements, which have been prepared in accordance with generally accepted accounting principles in the United States of America. The preparation of these financial statements requires the Company to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. On an on-going basis, the Company evaluates its estimates, including those that materially affect the financial statements and are related to the adequacy of the allowance for loan losses, investments, mortgage servicing rights, fair value measurements, retirement plans, intangible assets and the fair value of acquired assets and liabilities. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions. The Company’s policies related to estimates on the allowance for loan losses, other than temporary impairment of investments and impairment of intangible assets, can be found in Note 1 in the financial statements at Item 8 of this report.

Average balances, including balances used in calculating certain financial ratios, are generally comprised of average daily balances for the Company. Within Management’s Discussion and Analysis of Financial Condition and Results of Operations, certain performance measures including interest income, net interest income, net interest yield, and efficiency ratio are generally presented on a fully tax-equivalent (FTE) basis. The Company believes the use of these non-generally accepted accounting principles (non-GAAP) measures provides additional clarity in assessing its results.

On October 3, 2014, TriCo completed the acquisition of North Valley Bancorp following receipt of shareholder approval from both institutions and all required regulatory approvals. As part of the acquisition, North Valley Bank, a wholly-owned subsidiary of North Valley Bancorp, merged with and into Tri Counties Bank. In the acquisition, each share of North Valley common stock was converted into the right to receive 0.9433 shares of TriCo common stock. TriCo issued an aggregate of approximately 6.58 million shares of TriCo common stock to North Valley Bancorp shareholders, which was valued at a total of approximately $151 million based on the closing trading price of TriCo common stock on October 3, 2014 of $21.73. TriCo also assumed North Valley Bancorp’s obligations with respect to its outstanding trust preferred securities. Beginning on October 4, 2014, the effect of revenue and expenses from the operations of North Valley Bancorp, and the TriCo Bancshares common shares issued in consideration of the merger are included in the results of the Company.

North Valley Bank was a full-service commercial bank headquartered in Redding, California. North Valley conducted a commercial and retail banking services which included accepting demand, savings, and money market rate deposit accounts and time deposits, and making commercial, real estate and consumer loans. North Valley Bank had $935 million in assets and 22 commercial banking offices in Shasta, Humboldt, Del Norte, Mendocino, Yolo, Sonoma, Placer and Trinity Counties in Northern California at June 30, 2014.

On October 25, 2014, North Valley Bank’s electronic customer service and other data processing systems were converted onto Tri Counties Bank’s systems. Between January 7, 2015 and January 21, 2015, four Tri Counties Bank branches and four former North Valley Bank branches were consolidated into other Tri Counties Bank or other former North Valley Bank branches. See Note 2 in the financial statements at Item 8 of this report for a discussion about this transaction.

On September 23, 2011, the California DBO closed Citizens Bank of Northern California (“Citizens”), Nevada City, California and appointed the FDIC as receiver. That same date, the Bank assumed the banking operations of Citizens from the FDIC under a whole bank purchase and assumption agreement without loss sharing. With this agreement, the Bank added seven traditional bank branches including two in Grass Valley, and one in each of Nevada City, Penn Valley, Lake of the Pines, Truckee, and Auburn, California. This acquisition is consistent with the Bank’s community banking expansion strategy and provides further opportunity to fill in the Bank’s market presence in the Northern California market.

On May 28, 2010, the Office of the Comptroller of the Currency closed Granite Community Bank (“Granite”), Granite Bay, California and appointed the FDIC as receiver. That same date, the Bank assumed the banking operations of Granite from the FDIC under a whole bank purchase and assumption agreement with loss sharing. Under the terms of the loss sharing

21

agreement, the FDIC will cover a substantial portion of any future losses on loans, related unfunded loan commitments, other real estate owned (OREO)/foreclosed assets and accrued interest on loans for up to 90 days. The FDIC will absorb 80% of losses and share in 80% of loss recoveries on the covered assets acquired from Granite. The loss sharing arrangements for non-single family residential and single family residential loans are in effect for 5 years and 10 years, respectively, and the loss recovery provisions are in effect for 8 years and 10 years, respectively, from the acquisition date. With this agreement, the Bank added one traditional bank branch in each of Granite Bay and Auburn, California. This acquisition is consistent with the Bank’s community banking expansion strategy and provides further opportunity to fill in the Bank’s market presence in the greater Sacramento, California market.

The Company refers to loans and foreclosed assets that are covered by loss sharing agreements as “covered loans” and “covered foreclosed assets”, respectively. In addition, the Company refers to loans purchased or obtained in a business combination as “purchased credit impaired” (PCI) loans, or “purchased not credit impaired” (PNCI) loans. The Company refers to loans that it originates as “originated” loans. Additional information regarding the North Valley Bancorp acquisition can be found in Note 2 in the financial statements at Item 8 of this report. Additional information regarding the definitions and accounting for originated, PNCI and PCI loans can be found in Notes 1, 2, 4 and 5 in the financial statements at Item 8 of this report, and under the heading Asset Quality and Non-Performing Assets below.

Geographical Descriptions

For the purpose of describing the geographical location of the Company’s loans, the Company has defined northern California as that area of California north of, and including, Stockton; central California as that area of the State south of Stockton, to and including, Bakersfield; and southern California as that area of the State south of Bakersfield.

Results of Operations

Overview

The following discussion and analysis is designed to provide a better understanding of the significant changes and trends related to the Company and the Bank’s financial condition, operating results, asset and liability management, liquidity and capital resources and should be read in conjunction with the consolidated financial statements of the Company and the related notes at Item 8 of this report.

Following is a summary of the components of net income for the periods indicated (dollars in thousands):

	Year ended December 31,
Components of Net Income	2014			2013			2012
Net interest income	$	116,434		$	101,864		$	101,372
Benefit from (provision for) loan losses		4,045			715			(9,423	)
Noninterest income		34,516			36,829			37,980
Noninterest expense		(110,379	)		(93,604	)		(97,998	)
Taxes		(18,508	)		(18,405	)		(12,937	)
Net income	$	26,108		$	27,399		$	18,994
Net income per average fully-diluted share	$	1.46		$	1.69		$	1.18
Net income as a percentage of average shareholders’ equity		8.67	%		11.34	%		8.44	%
Net income as a percentage of average total assets		0.87	%		1.04	%		0.75	%

Net Interest Income

The Company’s primary source of revenue is net interest income, which is the difference between interest income on earning assets and interest expense on interest-bearing liabilities.

Following is a summary of the Company’s net interest income for the periods indicated (dollars in thousands):

	Year ended December 31,
Components of Net Interest Income	2014			2013			2012
Interest income	$	121,115		$	106,560		$	108,716
Interest expense		(4,378	)		(4,696	)		(7,344	)
Net interest income		116,737			101,864			101,372
FTE adjustment		303			350			257
Net interest income (FTE)	$	116,737		$	102,214		$	101,629
Net interest margin (FTE)		4.17	%		4.18	%		4.32	%

Net interest income (FTE) for the year ended December 31, 2014 was $116,737,000, an increase of $14,523,000 or 14.2% compared to the year ended December 31, 2013.

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The increase in net interest income (FTE) was due primarily to a $353,071,000 (14.4%) increase in the average balance of interest earning assets to $2,796,571,000, and the use of fed funds sold to purchase higher yielding investments throughout 2014 that were partially offset by a 44 basis point decrease in the average yield on loans to 5.62% and a 17 basis point decrease in the average yield on investments to 3.01% during the year ended December 31, 2014 when compared to the year ended December 31, 2013. The acquisition of North Valley Bancorp on October 3, 2014 contributed approximately $6,730,000, to interest income from loans, including approximately $480,000 of loan purchase discount accretion, and $1,310,000 to interest income from investments from October 4, 2014 to December 31, 2014. For the quarter ended December 31, 2014, the average yields on the acquired North Valley Bancorp loans, including the effect of loan purchase discount accretion, and investments were approximately 5.68% and 2.72% (FTE), respectively. The “Yield” and “Volume/Rate” tables shown below are useful in illustrating and quantifying the developments that affected net interest income during 2014 and 2013.

Net interest income (FTE) for the year ended December 31, 2013 was $102,214,000, an increase of $585,000 or 0.6% compared to the year ended December 31, 2012. The increase in net interest income during 2013 when compared to 2012 is mainly due to a decrease in average balance of other borrowings, a shift in deposit balances from relatively high interest rate earning time deposits to noninterest-earning, demand, and savings deposits, an increase in the average balance of investments securities, and an increase in the average balance of loans; all of which were substantially offset by a decrease in the average yield on loans.

Summary of Average Balances, Yields/Rates and Interest Differential – Yield Tables

The following tables present, for the periods indicated, information regarding the Company’s consolidated average assets, liabilities and shareholders’ equity, the amounts of interest income from average earning assets and resulting yields, and the amount of interest expense paid on interest-bearing liabilities. Average loan balances include nonperforming loans. Interest income includes proceeds from loans on nonaccrual loans only to the extent cash payments have been received and applied to interest income. Yields on securities and certain loans have been adjusted upward to reflect the effect of income thereon exempt from federal income taxation at the current statutory tax rate (dollars in thousands):

	Year ended December 31, 2014
	Average balance		Interest income/expense		Rates earned/paid
Assets
Loans	$	1,847,749	$	103,887		5.62	%
Investment securities - taxable		527,742		15,590		2.95	%
Investment securities - nontaxable		17,024		808		4.75	%
Cash at Federal Reserve and other banks		404,056		1,133		0.28	%
Total earning assets		2,796,571		121,418		4.34	%
Other assets		216,878
Total assets	$	3,013,449
Liabilities and shareholders’ equity
Interest-bearing demand deposits	$	605,241		484		0.08	%
Savings deposits		926,389		1,153		0.12	%
Time deposits		291,515		1,637		0.56	%
Other borrowings		7,512		4		0.05	%
Junior subordinated debt		44,366		1,403		3.16	%
Total interest-bearing liabilities		1,875,023		4,681		0.25	%
Noninterest-bearing demand		801,056
Other liabilities		36,085
Shareholders’ equity		301,285
Total liabilities and shareholders’ equity	$	3,013,449
Net interest spread (1)						4.09	%
Net interest income and interest margin (2)			$	116,737		4.17	%

(1) Net interest spread represents the average yield earned on interest-earning assets less the average rate paid on interest-bearing liabilities.

(2) Net interest margin is computed by dividing net interest income by total average earning assets.

23

Summary of Average Balances, Yields/Rates and Interest Differential – Yield Tables (continued)

	Year ended December 31, 2013
	Average balance		Interest income/expense		Rates earned/paid
Assets
Loans	$	1,610,725	$	97,548		6.06	%
Investment securities - taxable		224,636		6,736		3.00	%
Investment securities - nontaxable		16,632		933		5.61	%
Cash at Federal Reserve and other banks		591,507		1,693		0.29	%
Total earning assets		2,443,500		106,910		4.38	%
Other assets		179,267
Total assets	$	2,622,767
Liabilities and shareholders’ equity
Interest-bearing demand deposits	$	524,139		528		0.10	%
Savings deposits		797,803		1,026		0.13	%
Time deposits		315,253		1,891		0.60	%
Other borrowings		8,026		4		0.05	%
Junior subordinated debt		41,238		1,247		3.02	%
Total interest-bearing liabilities		1,686,459		4,696		0.28	%
Noninterest-bearing demand		657,377
Other liabilities		37,297
Shareholders’ equity		241,634
Total liabilities and shareholders’ equity	$	2,622,767
Net interest spread (1)						4.10	%
Net interest income and interest margin (2)			$	102,214		4.18	%

	Year ended December 31, 2012
	Average balance		Interest income/expense		Rates earned/paid
Assets
Loans	$	1,552,540	$	100,496		6.47	%
Investment securities - taxable		200,958		6,177		3.07	%
Investment securities - nontaxable		9,529		685		7.19	%
Cash at Federal Reserve and other banks		587,118		1,615		0.28	%
Total earning assets		2,350,145		108,973		4.64	%
Other assets		176,927
Total assets	$	2,527,072
Liabilities and shareholders’ equity
Interest-bearing demand deposits	$	471,747		784		0.17	%
Savings deposits		763,065		1,212		0.16	%
Time deposits		372,698		2,420		0.65	%
Other borrowings		45,753		1,604		3.51	%
Junior subordinated debt		41,238		1,324		3.21	%
Total interest-bearing liabilities		1,694,501		7,344		0.43	%
Noninterest-bearing demand		572,568
Other liabilities		34,852
Shareholders’ equity		225,151
Total liabilities and shareholders’ equity	$	2,527,072
Net interest spread (1)						4.21	%
Net interest income and interest margin (2)			$	101,629		4.32	%

(1) Net interest spread represents the average yield earned on interest-earning assets less the average rate paid on interest-bearing liabilities.

(2) Net interest margin is computed by dividing net interest income by total average earning assets.

24

Summary of Changes in Interest Income and Expense due to Changes in Average Asset and Liability Balances and Yields Earned and Rates Paid – Volume/Rate Tables

The following table sets forth a summary of the changes in the Company’s interest income and interest expense from changes in average asset and liability balances (volume) and changes in average interest rates for the periods indicated. The rate/volume variance has been included in the rate variance. Amounts are calculated on a fully taxable equivalent basis:

	2014 over 2013									2013 over 2012
	Volume			Yield/ Rate			Total			Volume			Yield/ Rate			Total
	(dollars in thousands)
Increase (decrease) in
interest income:
Loans	$	14,364		$	(8,025	)	$	6,339		$	3,765		$	(6,713	)	$	(2,948	)
Investments - taxable		9,093			(239	)		8,854			727			(168	)		559
Investments - nontaxable		22			(147	)		(125	)		511			(263	)		248
Cash at Federal Reserve and other banks		(544	)		(16	)		(560	)		12			66			78
Total		22,935			(8,427	)		14,508			5,015			(7,078	)		(2,063	)
Increase (decrease) in interest expense:
Demand deposits (interest-bearing)		81			(125	)		(44	)		89			(345	)		(256	)
Savings deposits		167			(40	)		127			56			(242	)		(186	)
Time deposits		(142	)		(112	)		(254	)		(373	)		(156	)		(529	)
Other borrowings		—			—			—			(1,324	)		(276	)		(1,600	)
Junior subordinated debt		94			62			156			—			(77	)		(77	)
Total		200			(215	)		(15	)		(1,552	)		(1,096	)		(2,648	)
Increase (decrease) innet interest income	$	22,735		$	(8,212	)	$	14,523		$	6,567		$	(5,982	)	$	585

Provision for Loan Losses

The provision for loan losses during any period is the sum of the allowance for loan losses required at the end of the period and any loan charge offs during the period, less the allowance for loan losses required at the beginning of the period, and less any loan recoveries during the period. See the Tables labeled “Allowance for loan losses – year ended December 31, 2014 and 2013” at Note 5 in Item 8 of Part II of this report for the components that make up the provision for loan losses for the years ended December 31, 2014 and 2013.

The Company benefited from a $4,045,000 reversal of provision for loan losses during the year ended December 31, 2014 versus a benefit from reversal of provision for loan losses of $715,000 during the year ended December 31, 2013. As shown in the Table labeled “Allowance for Loan Losses—year ended December 31, 2014” at Note 5 in Item 8 of Part II of this report, all categories of loans except residential real estate mortgage loans, home equity loans and other consumer loans experienced a reversal of provision for loan losses during the year ended December 31, 2014. The level of provision, or reversal of provision, for loan losses of each loan category during the year ended December 31, 2014 was due primarily to a decrease in the required allowance for loan losses as of December 31, 2014 when compared to the required allowance for loan losses as of December 31, 2013 less net charge-offs during the year ended December 31, 2014, and the effect of the changes in the allowance methodology during the year ended December 31, 2014 as described under the heading “Loans and Allowance for Loan Losses” at Note 1 in Item 8 of Part II of this report. All categories of loans except home equity loans and other consumer loans experienced a decrease in the required allowance for loan losses during the year ended December 31, 2014. These decreases in required allowance for loan losses were due primarily to reduced impaired loans, improvements in estimated cash flows and collateral values for the remaining and newly impaired loans, and reductions in historical loss factors that, in part, determine the required loan loss allowance for performing loans in accordance with the Company’s allowance for loan losses methodology as described under the heading “Loans and Allowance for Loan Losses” at Note 1 in Item 8 of Part II of this report. These same factors were also present, to some extent, for home equity loans and other consumer loans, but were more than offset by the effect of increased loan balances or changes in credit quality within the “pass” category of these loan categories resulting in net provisions for loan losses in these categories during the year ended December 31, 2014. For details of the change in nonperforming loans during the year ended December 31, 2013 see the Tables, and associated narratives, labeled “Changes in nonperforming assets during the year ended December 31, 2014” and “Changes in nonperforming assets during the three months ended December 31, September 30, June 30, and March 31, 2014” under the heading “Asset Quality and Non-Performing Assets” below. During the year ended December 31, 2014, the Company made two changes to its allowance for loan loss methodology. The changes in methodology are described under the heading “Allowance for loan losses” in the section below labeled “Financial Condition”. Excluding the effect of the changes in allowance methodology during the year ended December 31, 2014, the reversal of provision for loan losses during the year ended December 31, 2014 would have been approximately $5,484,000, or $1,438,000 more than the $4,046,000 that was actually recorded, and the allowance for loan losses at December 31, 2014 would have been approximately $35,177,000, or $1,438,000 less than the $36,585,000 that was actually recorded.

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The Company benefited from a $715,000 reversal of provision for loan losses during the year ended December 31, 2013 versus a provision for loan losses of $9,423,000 during the year ended December 31, 2012. The decrease in the provision for loan losses for the year ended December 31, 2013 as compared to the year ended December 31, 2012 was primarily the result of improvement in collateral values and estimated cash flows related to nonperforming loans and purchased credit impaired loans, and a reduction in nonperforming loans.

The provision for loan losses related to Originated and PNCI loans is based on management’s evaluation of inherent risks in these loan portfolios and a corresponding analysis of the allowance for loan losses. The provision for loan losses related to PCI loan portfolio is based on changes in estimated cash flows expected to be collected on PCI loans. Additional discussion on loan quality, our procedures to measure loan impairment, and the allowance for loan losses is provided under the heading “Asset Quality and Non-Performing Assets” below.

Management re-evaluates the loss ratios and other assumptions used in its calculation of the allowance for loan losses for its Originated and PNCI loan portfolios on a quarterly basis and makes changes as appropriate based upon, among other things, changes in loss rates experienced, collateral support for underlying loans, changes and trends in the economy, and changes in the loan mix. Management also re-evaluates expected cash flows used in its accounting for its PCI loan portfolio, including any required allowance for loan losses, on a quarterly basis and makes changes as appropriate based upon, among other things, changes in loan repayment experience, changes in loss rates experienced, and collateral support for underlying loans.

Noninterest Income

The following table summarizes the Company’s noninterest income for the periods indicated (dollars in thousands):

	Year ended December 31,
	2014			2013			2012
Components of Noninterest Income
Service charges on deposit accounts	$	11,811		$	12,716		$	14,290
ATM fees and interchange		9,651			8,370			7,762
Other service fees		2,206			2,144			2,223
Mortgage banking service fees		1,869			1,774			1,666
Change in value of mortgage servicing rights		(1,301	)		253			(2,016	)
Total service charges and fees		24,236			25,257			23,925
Gain on sale of loans		2,032			5,602			6,810
Commissions on sale of nondeposit investment products		2,995			2,983			3,209
Increase in cash value of life insurance		1,953			1,727			1,820
Change in indemnification asset		(856	)		(1,649	)		(286	)
Gain on disposition of foreclosed assets		2,153			1,640			786
Gain on life insurance death benefit		—			—			675
Other noninterest income		2,003			1,269			1,041
Total noninterest income	$	34,516		$	36,829		$	37,980

Noninterest income decreased $2,313,000 (6.3%) to $34,516,000 in 2014. Service charges on deposit accounts were down $905,000 (7.1%) due to reduced customer overdrafts and a resulting decrease in non-sufficient funds fees. ATM fees and interchange revenue increased $1,281,000 (15.3%) due to increased interchange revenue from the negotiation of a more favorable agreement with the Company’s interchange service provider, increased sales efforts in this area, and the acquisition of North Valley Bancorp and its customer base. Overall, mortgage banking activities, which includes mortgage banking servicing fees, change in value of mortgage servicing rights, and gain on sale of loans, accounted for $2,600,000 of noninterest income in the 2014 compared to $7,629,000 in 2013. This $5,029,000 (65.9%) decrease in mortgage banking related revenue was mainly due to an increase in mortgage rates that occurred in May 2013 that resulted in reduced mortgage refinance activity and reduced gain on sale of loans in the second half of 2013 and throughout 2014, and a decrease in change in value of mortgage servicing rights as projected servicing fees were reduced due to reduced mortgage rates at the end of 2014 that are expected to result in increased refinance activity and shorter lives of existing servicing assets. Increase in cash value of life insurance improved $226,000 (13.1%) during 2014 due to the addition of life insurance in the North Valley Bancorp acquisition. Change in indemnification asset improved $793,000 to a negative contribution to revenue of $856,000 in 2014 is primarily due to a decrease in estimated loan losses from the loan portfolio and foreclosed assets acquired in the Granite acquisition on May 28, 2010, and the fact that such losses are generally “covered” at the rate of 80% by the FDIC. The actual decrease in estimated losses is reflected in increased interest income, decreased provision for loan losses and/or decreased provision for foreclosed asset losses. Gain on sale of foreclosed assets increased $513,000 (31.3%) to $2,153,000 during 2014 primarily due to improved property values.

Noninterest income decreased $1,151,000 (3.0%) to $36,829,000 in 2013. Service charges on deposit accounts were down $1,574,000 (11.0%) due to reduced customer overdrafts and a resulting decrease in non-sufficient funds fees. ATM fees and

26

interchange income was up $608,000 (7.8%) due to increased customer point-of-sale transactions. Overall, mortgage banking activities, which includes mortgage banking servicing fees, change in value of mortgage servicing rights, and gain on sale of loans, accounted for $7,629,000 of noninterest income in the 2013 compared to $6,460,000 in 2012. This $1,169,000 (18.1%) increase in mortgage banking related revenue is mainly due to historically low mortgage rates and the associated high level of mortgage refinance activity that existed during most of 2013, the Bank’s focus of resources in this area, and an increase in mortgage rates in the second half of 2013 that while significantly decreasing originations, sales, and gain on sale of loans during the second half of 2013, also resulted in an increase in the value of the Company’s mortgage servicing rights during 2013. Commissions on sale of nondeposit investment products decreased $226,000 (7.0%) in 2013. The change in indemnification asset from ($286,000) in 2012 to ($1,649,000) in 2013 is primarily due to a decrease in estimated loan losses from the loan portfolio and foreclosed assets acquired in the Granite acquisition on May 28, 2010, and the fact that such losses are generally “covered” at the rate of 80% by the FDIC. The decrease in estimated losses is also reflected in increased interest income, decreased provision for loan losses and/or decreased provision for foreclosed asset losses.

Noninterest Expense

The following table summarizes the Company’s other noninterest expense for the periods indicated (dollars in thousands):

	Year ended December 31,
	2014			2013			2012
Components of Noninterest Expense
Salaries and related benefits:
Base salaries, net of deferred loan origination costs	$	39,342		$	34,404		$	33,093
Incentive compensation		5,068			4,694			5,138
Benefits and other compensation costs		13,134			12,838			11,721
Total salaries and related benefits		57,544			51,936			49,952
Other noninterest expense:
Occupancy		8,203			7,405			7,263
Equipment		4,514			4,162			4,444
Data processing and software		6,512			4,844			4,793
Assessments		2,107			2,248			2,393
ATM network charges		2,996			2,480			2,390
Advertising		2,413			1,981			2,876
Professional fees		3,888			2,707			2,879
Telecommunications		2,870			2,449			2,250
Postage		949			786			920
Courier service		1,055			988			1,013
Foreclosed asset expense		528			514			1,474
Intangible amortization		446			209			209
Operational losses		764			618			787
Provision for foreclosed asset losses		208			682			1,728
Change in reserve for unfunded commitments		(395	)		(1,200	)		875
Legal settlement		—			339			2,090
Merger expense		4,858			312			—
Other		10,919			10,144			9,662
Total other noninterest expenses		52,835			41,668			48,046
Total noninterest expense	$	110,379		$	93,604		$	97,998
Merger expense:
Incentive compensation	$	1,174			—			—
Benefits and other compensation costs		94			—			—
Data processing and software		475			—			—
Professional fees		2,390		$	312			—
Other		725			—			—
Total merger expense	$	4,858		$	312			—
Average full time equivalent staff		783			733			737
Noninterest expense to revenue (FTE)		73.0	%		67.3	%		70.2	%

Salary and benefit expenses increased $5,608,000 (10.8%) to $57,544,000 in 2014 compared to 2013. Base salaries increased $4,938,000 (14.4%) to $39,342,000 in 2014 primarily due to the North Valley Bancorp acquisition. The average number of full time equivalent employees increased 50 (6.8%) to 783 during 2014. The increase in full time equivalent employees is due to the addition of employees from the North Valley Bancorp acquisition and the addition of operations, compliance, marketing, and administrative employees, that were partially offset by reductions of employees from the consolidation of three, two, one and one Tri Counties Bank branches during the three months ended December 31, 2013, and March 31, June 30, and September 30, 2014, respectively. Annual salary merit increases of approximately 3.0% also contributed to the increase in base salary expense. Incentive and commission related salary expenses increased $374,000 (14.4%) to

27

$5,068,000 during 2014 due to increases in all types of incentive compensation. Benefits expense, including retirement, medical and workers’ compensation insurance, and taxes, increased $296,000 (2.3%) to $13,134,000 during 2014 due to small to no increases in most benefit types.

Salary and benefit expenses increased $1,984,000 (4.0%) to $51,936,000 during the year ended December 31, 2013 compared to the year ended December 31, 2012. Base salaries increased $1,311,000 (4.0%) to $34,404,000 during the year ended December 31, 2013. The increase in base salaries was mainly due to annual merit increases and an increase in administrative, central operations, and electronic banking personnel that were partially offset by a reduction in branch personnel. Average full time equivalent personnel decreased to 733 during the year ended December 31, 2013 from 737 during the year ended December 31, 2012. Incentive and commission related salary expenses decreased $444,000 (8.6%) to $4,694,000 during year ended December 31, 2013 due primarily to reduced mortgage loan production incentives when compared to the prior year. Benefits expense, including retirement, medical and workers’ compensation insurance, and taxes, increased $1,117,000 (9.5%) to $12,838,000 during the year ended December 31, 2013 primarily due to increased medical insurance costs, employee stock ownership plan expense, and employer payroll taxes.

Other noninterest expense increased $11,167,000 (26.8%) to $52,835,000 during 2014 compared 2013 December 31, 2013. The increase in other noninterest expense was due primarily to a $4,546,000 increase in merger related expenses to $4,858,000, of which $1,269,000 are not deductible for tax purposes, a $1,668,000 (34.4%) increase in data processing and software expenses to $6,512,000, and a $1,181,000 (43.6%) increase in professional fees to $3,888,000. The increase in merger expenses was due to the North Valley Bancorp acquisition and included stay bonuses, severance pay, and other retention incentives, system conversion and other data processing expenses, professional fees including financial advisor and other consultant fees. The increase in data processing and software expenses was due primarily to increases in ongoing data processing and software expenses some of which are due to increased ongoing processing volume as a result of the North Valley Bancorp acquisition. The increase in professional fees was due primarily to increases in ongoing or non-merger related consulting fees related to compliance, control systems, and operational improvements. Increases in other areas of noninterest expense are primarily due to the North Valley Bancorp acquisition.

Other noninterest expenses decreased $6,378,000 (13.3%) to $41,668,000 during the year ended December 31, 2013 when compared to the year ended December 31, 2012. The decrease in other noninterest expense is primarily due to decreases of $2,075,000, $1,751,000, $1,046,000, $960,000, and $895,000 in change in reserve for unfunded commitments, legal settlement expense, provision for foreclosed asset losses, foreclosed asset expenses, and advertising and marketing expense, respectively, from the prior year. The decrease in change in reserve for unfunded commitments was mainly due to improved loss histories for performing originated loans that are used to calculate the required reserve for unfunded commitments. The decrease in legal settlement expense is due to the resolution of a legal proceeding, and is further described at Item 3 of Part I of this report. The decreases in provision for foreclosed asset losses and foreclosed asset expense are due to decreased foreclosed assets, and improved values of foreclosed values. During 2013, the Bank opened no branches, closed three (leased) branches, closed one (leased) non-branch facility, and opened its Campus (owned) facility.

Income Taxes

The effective tax rate on income was 41.5%, 40.2%, and 40.5% in 2014, 2013, and 2012, respectively. The effective tax rate was greater than the federal statutory tax rate due to state tax expense of $4,817,000, $4,811,000, and $3,277,000, respectively, in these years, and $1,310,000 of nondeductible merger expenses in 2014. Tax-exempt income of $505,000, $583,000, and $428,000, respectively, from investment securities, and $1,953,000, $1,727,000, and $2,495,000, respectively, from increase in cash value and gain on death benefit of life insurance in these years helped to reduce the effective tax rate.

Financial Condition

Investment Securities

The following table presents the available for sale investment securities portfolio by major type as of the dates indicated:

	Year ended December 31,
(In thousands)	2014		2013		2012		2011		2010
Investment securities available for sale (at fair value):
Obligations of US government corporations and agencies	$	75,120	$	97,143	$	151,701	$	217,384	$	264,181
Obligations of states and political subdivisions		3,175		5,589		9,421		10,028		12,541
Corporate bonds		1,908		1,915		1,905		1,811		549
Marketable equity securities		3,002		—		—		—		—
Total investment securities available for sale	$	83,205	$	104,647	$	163,027	$	229,223	$	277,271

Investment securities available for sale decreased $21,442,000 to $83,205,000 as of December 31, 2014, as compared to December 31, 2013. This decrease is attributable to maturities and principal repayments of $24,016,000, a decrease in fair value of investments securities available for sale of $161,000, amortization of net purchase price premiums of $432,000, acquisition of $17,297,000 from North Valley Bancorp and proceeds for sale of securities of $14,130,000.

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The following table presents the held to maturity investment securities portfolio by major type as of the dates indicated:

	Year ended December 31,
(In thousands)	2014		2013		2012		2011		2010
Investment securities held to maturity (at cost):
Obligations of US government corporations and agencies	$	660,836	$	227,864		—		—		—
Obligations of states and political subdivisions		15,590		12,640		—		—		—
Total investment securities held to maturity	$	676,426	$	240,504		—		—		—

Investment securities held to maturity increased to $435,922,000 as of December 31, 2014, as compared to December 31, 2013. This increase is attributable to purchases of $280,692,000, less principal repayments of $34,172,000, amortization of net purchase price discounts/premiums of $547,000 and the acquisition of $189,949,000 from North Valley Bancorp.

Additional information about the investment portfolio is provided in Note 3 in the financial statements at Item 8 of Part II of this report.

Restricted Equity Securities

Restricted equity securities were $16,956,000 at December 31, 2014 and $9,163,000 at December 31, 2013. The entire balance of restricted equity securities at December 31, 2014 and December 31, 2013 represents the Bank’s investment in the Federal Home Loan Bank of San Francisco (“FHLB”). The increase of $7,793,000 is attributed to acquiring $5,378,000 in FHLB stock from North Valley Bancorp and the purchase of $2,415,000 in FHLB stock.

FHLB stock is carried at par and does not have a readily determinable fair value. While technically these are considered equity securities, there is no market for the FHLB stock. Therefore, the shares are considered as restricted investment securities. Management periodically evaluates FHLB stock for other-than-temporary impairment. Management’s determination of whether these investments are impaired is based on its assessment of the ultimate recoverability of cost rather than by recognizing temporary declines in value. The determination of whether a decline affects the ultimate recoverability of cost is influenced by criteria such as (1) the significance of any decline in net assets of the FHLB as compared to the capital stock amount for the FHLB and the length of time this situation has persisted, (2) commitments by the FHLB to make payments required by law or regulation and the level of such payments in relation to the operating performance of the FHLB, (3) the impact of legislative and regulatory changes on institutions and, accordingly, the customer base of the FHLB, and (4) the liquidity position of the FHLB.

As a member of the FHLB system, the Company is required to maintain a minimum level of investment in FHLB stock based on specific percentages of its outstanding mortgages, total assets, or FHLB advances. The Company may request redemption at par value of any stock in excess of the minimum required investment. Stock redemptions are at the discretion of the FHLB.

Loans

The Bank concentrates its lending activities in four principal areas: real estate mortgage loans (residential and commercial loans), consumer loans, commercial loans (including agricultural loans), and real estate construction loans. The interest rates charged for the loans made by the Bank vary with the degree of risk, the size and maturity of the loans, the borrower’s relationship with the Bank and prevailing money market rates indicative of the Bank’s cost of funds.

The majority of the Bank’s loans are direct loans made to individuals, farmers and local businesses. The Bank relies substantially on local promotional activity and personal contacts by bank officers, directors and employees to compete with other financial institutions. The Bank makes loans to borrowers whose applications include a sound purpose, a viable repayment source and a plan of repayment established at inception and generally backed by a secondary source of repayment.

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Loan Portfolio Composite

The following table shows the Company’s loan balances, including net deferred loan costs, at the dates indicated:

	Year ended December 31,
(dollars in thousands)	2014		2013		2012		2011		2010
Real estate mortgage	$	1,615,359	$	1,107,863	$	1,010,130	$	965,922	$	835,471
Consumer		417,084		383,163		386,111		406,330		395,771
Commercial		174,945		131,878		135,528		139,131		143,413
Real estate construction		75,136		49,103		33,054		39,649		44,916
Total loans	$	2,282,524	$	1,672,007	$	1,564,823	$	1,551,032	$	1,419,571

The following table shows the Company’s loan balances, including net deferred loan costs, as a percentage of total loans at the dates indicated:

	Year ended December 31,
	2014			2013			2012			2011			2010
Real estate mortgage		70.7	%		66.3	%		64.5	%		62.2	%		58.8	%
Consumer		18.3	%		22.9	%		24.7	%		26.2	%		27.9	%
Commercial		7.7	%		7.9	%		8.7	%		9.0	%		10.1	%
Real estate construction		3.3	%		2.9	%		2.1	%		2.6	%		3.2	%
Total loans		100.0	%		100.0	%		100.0	%		100.0	%		100.0	%

At December 31, 2014 loans, including net deferred loan costs, totaled $2,282,524,000 which was a 36.5% ($610,517,000) increase over the balances at the end of 2013. This increase in loans during 2014 included $499,327,000 of loans acquired in the North Valley Bancorp acquisition on October 3, 2014, and $32,017,000 of purchased single family residential real estate loans. Demand for commercial real estate (real estate mortgage) loans was moderate during 2014. Demand for home equity loans and lines of credit was weak during 2014.

At December 31, 2013 loans, including net deferred loan costs, totaled $1,672,007,000 which was a 6.8% ($107,184,000) increase over the balances at the end of 2012. Demand for commercial real estate (real estate mortgage) loans was weak to modest during 2013. During 2013, the Company purchased $62,698,000 of residential (real estate mortgage) loans. Demand for home equity loans and lines of credit were moderate during 2013. Real estate construction loans increased during 2013 primarily due to one large loan that was originated during 2013.

At December 31, 2012 loans, including net deferred loan costs, totaled $1,564,823,000 which was a 0.9% ($13,791,000) increase over the balances at the end of 2011. Demand for commercial real estate (real estate mortgage) loans was weak to modest during 2012. Demand for home equity loans and lines of credit were weak during 2012. Real estate construction loans declined during 2012 as did auto dealer loans.

Asset Quality and Nonperforming Assets

Nonperforming Assets

Loans originated by the Company, i.e., not purchased or acquired in a business combination, are referred to as originated loans. Originated loans are reported at the principal amount outstanding, net of deferred loan fees and costs. Loan origination and commitment fees and certain direct loan origination costs are deferred, and the net amount is amortized as an adjustment of the related loan’s yield over the actual life of the loan. Originated loans on which the accrual of interest has been discontinued are designated as nonaccrual loans.

Originated loans are placed in nonaccrual status when reasonable doubt exists as to the full, timely collection of interest or principal, or a loan becomes contractually past due by 90 days or more with respect to interest or principal and is not well secured and in the process of collection. When an originated loan is placed on nonaccrual status, all interest previously accrued but not collected is reversed. Income on such loans is then recognized only to the extent that cash is received and where the future collection of principal is probable. Interest accruals are resumed on such loans only when they are brought fully current with respect to interest and principal and when, in the judgment of Management, the loan is estimated to be fully collectible as to both principal and interest.

An allowance for loan losses for originated loans is established through a provision for loan losses charged to expense. Originated loans and deposit related overdrafts are charged against the allowance for loan losses when Management believes that the collectability of the principal is unlikely or, with respect to consumer installment loans, according to an established delinquency schedule. The allowance is an amount that Management believes will be adequate to absorb probable losses inherent in existing loans and leases, based on evaluations of the collectability, impairment and prior loss experience of loans

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and leases. The evaluations take into consideration such factors as changes in the nature and size of the portfolio, overall portfolio quality, loan concentrations, specific problem loans, and current economic conditions that may affect the borrower’s ability to pay. The Company defines an originated loan as impaired when it is probable the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement. Impaired originated loans are measured based on the present value of expected future cash flows discounted at the loan’s original effective interest rate. As a practical expedient, impairment may be measured based on the loan’s observable market price or the fair value of the collateral if the loan is collateral dependent. When the measure of the impaired loan is less than the recorded investment in the loan, the impairment is recorded through a valuation allowance.

In situations related to originated loans where, for economic or legal reasons related to a borrower’s financial difficulties, the Company grants a concession for other than an insignificant period of time to the borrower that the Company would not otherwise consider, the related loan is classified as a troubled debt restructuring (TDR). The Company strives to identify borrowers in financial difficulty early and work with them to modify to more affordable terms before their loan reaches nonaccrual status. These modified terms may include rate reductions, principal forgiveness, payment forbearance and other actions intended to minimize the economic loss and to avoid foreclosure or repossession of the collateral. In cases where the Company grants the borrower new terms that result in the loan being classified as a TDR, the Company measures any impairment on the restructuring as noted above for impaired loans. TDR loans are classified as impaired until they are fully paid off or charged off. Loans that are in nonaccrual status at the time they become TDR loans, remain in nonaccrual status until the borrower demonstrates a sustained period of performance which the Company generally believes to be six consecutive months of payments, or equivalent. Otherwise, TDR loans are subject to the same nonaccrual and charge-off policies as noted above with respect to their restructured principal balance.

Credit risk is inherent in the business of lending. As a result, the Company maintains an allowance for loan losses to absorb losses inherent in the Company’s originated loan portfolio. This is maintained through periodic charges to earnings. These charges are included in the Consolidated Statements of Income as provision for loan losses. All specifically identifiable and quantifiable losses are immediately charged off against the allowance. However, for a variety of reasons, not all losses are immediately known to the Company and, of those that are known, the full extent of the loss may not be quantifiable at that point in time. The balance of the Company’s allowance for originated loan losses is meant to be an estimate of these unknown but probable losses inherent in the portfolio.

The Company formally assesses the adequacy of the allowance for originated loan losses on a quarterly basis. Determination of the adequacy is based on ongoing assessments of the probable risk in the outstanding originated loan portfolio, and to a lesser extent the Company’s originated loan commitments. These assessments include the periodic re-grading of credits based on changes in their individual credit characteristics including delinquency, seasoning, recent financial performance of the borrower, economic factors, changes in the interest rate environment, growth of the portfolio as a whole or by segment, and other factors as warranted. Loans are initially graded when originated. They are re-graded as they are renewed, when there is a new loan to the same borrower, when identified facts demonstrate heightened risk of nonpayment, or if they become delinquent. Re-grading of larger problem loans occurs at least quarterly. Confirmation of the quality of the grading process is obtained by independent credit reviews conducted by consultants specifically hired for this purpose and by various bank regulatory agencies.

The Company’s method for assessing the appropriateness of the allowance for originated loan losses includes specific allowances for impaired originated loans and leases, formula allowance factors for pools of credits, and allowances for changing environmental factors (e.g., interest rates, growth, economic conditions, etc.). Allowance factors for loan pools were based on historical loss experience by product type and prior risk rating.

During the three months ended March 31, 2012, management changed some of the assumptions utilized in the Allowance for Loan Losses estimate calculation. These changes were intended to more accurately reflect the current risk in the loan portfolio and to better estimate the losses inherent but not yet quantifiable. These changes included the conversion to a historical loss migration analysis intended to better determine the appropriate formula reserve ratio by loan category and risk rating, the addition of an environmental factor related to the delinquency rate of loans not classified as impaired by loan category, the elimination of an unspecified reserve allocation previously intended to account for imprecision inherent in the overall calculation, and the reclassification of risk rating of certain consumer loans based on current credit score in an attempt to better identify the risk in the portfolio. The financial effect of these changes resulted in a net reduction in the calculated Allowance for Loan Losses of $1,388,000 during the three months ended March 31, 2012. Allowances for impaired loans are based on analysis of individual credits. Allowances for changing environmental factors are Management’s best estimate of the probable impact these changes have had on the originated loan portfolio as a whole. The allowance for originated loans is included in the allowance for loan losses.

During the three months ended March 31, 2013, the Company changed the method it uses to estimate net sale proceeds from real estate collateral sales when calculating the allowance for loan losses associated with impaired real estate collateral dependent loans. Previously, the Company used the greater of fifteen percent or actual estimated selling costs. Currently, the Company uses the actual estimated selling costs, and an adjustment to appraised value based on the age of the appraisal.

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These changes are intended to more accurately reflect the estimated net sale proceeds from the sale of impaired collateral dependent real estate loans. This change in methodology resulted in the allowance for loan losses as of March 31, 2013 being $494,000 more than it would have been without this change in methodology.

During the three months ended June 30, 2013, the Company modified its loss migration analysis methodology used to determine the formula allowance factors. When the Company originally established its loss migration analysis methodology during the quarter ended March 31, 2012, it reviewed the loss experience of each rolling twelve month period over the previous three years in order to calculate an annualized loss rate by loan category and risk rating. The use of three years of loss experience data was originally used because that was the extent of the detailed loss data, by loan category and risk rating that was available at the time. This three year historical look-back period was used through the quarter ended March 31, 2013. Starting with the quarter ended June 30, 2013, the Company reviews all available detailed loss experience data, going back to, and including, the twelve month period ended June 30, 2009, and does not limit the look-back period to the most recent three years of historical loss data. Using this data, the Company calculates loss factors for each quarter from the quarter ended June 30, 2009 to the most recent quarter. The Company then calculates a weighted average formula allowance factor for each loan category and risk rating with the most recent quarterly loss factor being weighted 125%, the quarter ended June 30, 2009 loss factor being weighted 75%, and the loss factors for all the quarters between the most recent quarter and the quarter ended June 30, 2009, being weighted on a linear scale from 75% to 125%. This change is intended to more accurately reflect the risk inherent in the loan portfolio by considering historical loss data for all years as the data for new periods becomes available. This change in methodology resulted in the allowance for loan losses as of June 30, 2013 being $1,314,000 more than it would have been without this change in methodology.

During the three months ended September 30, 2013, the Company modified its methodology used to determine the allowance for changing environmental factors. Previously, the Company compared the current value of each environmental factor to a fixed baseline value. The deviation of the current value from the baseline value was then multiplied by a conversion factor to determine the required allowance related to each environmental factor. As of September 30, 2013, the Company replaced the fixed baseline values with average baseline values derived from historical averages, and adjusted the conversion factors. This change is intended to more accurately reflect the risk inherent in the portfolio by recognizing that baseline, or normal, levels for environmental factors may change over time. This change in methodology resulted in the allowance for loan losses as of September 30, 2013 being $1,665,000 more than it would have been without this change in methodology.

During the three months ended March 31, 2014, the Company modified its methodology used to determine the allowance for changing environmental factors by adding a new environmental factor based on the California Home Affordability Index (“CHAI”). The CHAI measures the percentage of households in California that can afford to purchase the median priced home in California based on current home prices and mortgage interest rates. The use of the CHAI environmental factor consists of comparing the current CHAI to its historical baseline, and allows management to consider the adverse impact that a lower than historical CHAI may have on general economic activity and the performance of our borrowers. Based on an analysis of historical data, management believes this environmental factor gives a better estimate of current economic activity compared to other environmental factors that may lag current economic activity to some extent. This change in methodology resulted in no change to the allowance for loan losses as of March 31, 2014 compared to what it would have been without this change in methodology.

During the three months ended June 30, 2014, the Company refined the method it uses to evaluate historical losses for the purpose of estimating the pool allowance for unimpaired loans. In the third quarter of 2010, the Company moved from a six point grading system (Grades A-F) to a nine point risk rating system (Risk Ratings 1-9), primarily to allow for more distinction within the “Pass” risk rating. Initially, there was not sufficient loss experience within the nine point scale to complete a migration analysis for all nine risk ratings, all loans risk rated Pass or 2-5 were grouped together, a loss rate was calculated for that group, and that loss rate was established as the loss rate for risk rating 4. The reserve ratios for risk ratings 2, 3 & 5 were then interpolated from that figure. As of June 30, 2014, the Company was able to compile twelve quarters of historical loss information for all risk ratings, and use that information to calculate the loss rates for each of the nine risk ratings without interpolation. This refinement led to an increase of $1,438,000 in the reserve requirement for unimpaired loans, driven primarily by home equity lines of credit with a risk rating of 5 or “Pass-Watch.”

Loans purchased or acquired in a business combination are referred to as acquired loans. Acquired loans are valued as of acquisition date in accordance with Financial Accounting Standards Board Accounting Standards Codification (“FASB ASC”) Topic 805, Business Combinations. Loans acquired with evidence of credit deterioration since origination for which it is probable that all contractually required payments will not be collected are referred to as purchased credit impaired (PCI) loans. PCI loans are accounted for under FASB ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality. Under FASB ASC Topic 805 and FASB ASC Topic 310-30, PCI loans are recorded at fair value at acquisition date, factoring in credit losses expected to be incurred over the life of the loan. Accordingly, an allowance for loan losses is not carried over or recorded as of the acquisition date. Fair value is defined as the present value of the future estimated principal and interest payments of the loan, with the discount rate used in the present value calculation representing the estimated effective yield of the loan. Default rates, loss severity, and prepayment speed assumptions are periodically reassessed and our estimate of future payments is adjusted accordingly. The difference between contractual future payments

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and estimated future payments is referred to as the nonaccretable difference. The difference between estimated future payments and the present value of the estimated future payments is referred to as the accretable yield. The accretable yield represents the amount that is expected to be recorded as interest income over the remaining life of the loan. If after acquisition, the Company determines that the estimated future cash flows of a PCI loan are expected to be more than the originally estimated, an increase in the discount rate (effective yield) would be made such that the newly increased accretable yield would be recognized, on a level yield basis, over the remaining estimated life of the loan. If, after acquisition, the Company determines that the estimated future cash flows of a PCI loan are expected to be less than the previously estimated, the discount rate would first be reduced until the present value of the reduced cash flow estimate equals the previous present value however, the discount rate may not be lowered below its original level at acquisition. If the discount rate has been lowered to its original level and the present value has not been sufficiently lowered, an allowance for loan loss would be established through a provision for loan losses charged to expense to decrease the present value to the required level. If the estimated cash flows improve after an allowance has been established for a loan, the allowance may be partially or fully reversed depending on the improvement in the estimated cash flows. Only after the allowance has been fully reversed may the discount rate be increased. PCI loans are put on nonaccrual status when cash flows cannot be reasonably estimated. PCI loans on nonaccrual status are accounted for using the cost recovery method or cash basis method of income recognition. PCI loans are charged off when evidence suggests cash flows are not recoverable. Foreclosed assets from PCI loans are recorded in foreclosed assets at fair value with the fair value at time of foreclosure representing cash flow from the loan. ASC 310-30 allows PCI loans with similar risk characteristics and acquisition time frame to be “pooled” and have their cash flows aggregated as if they were one loan. The Company elected to use the “pooled” method of ASC 310-30 for PCI – other loans in the acquisition of certain assets and liabilities of Granite and Citizens.

Acquired loans that are not PCI loans are referred to as purchased not credit impaired (PNCI) loans. PNCI loans are accounted for under FASB ASC Topic 310-20, Receivables – Nonrefundable Fees and Other Costs, in which interest income is accrued on a level-yield basis for performing loans. For income recognition purposes, this method assumes that all contractual cash flows will be collected, and no allowance for loan losses is established at the time of acquistion. Post-acquisition date, an allowance for loan losses may need to be established for acquired loans through a provision charged to earnings for credit losses incurred subsequent to acquisition. Under ASC 310-20, the loss would be measured based on the probable shortfall in relation to the contractual note requirements, consistent with our allowance for loan loss policy for similar loans.

When referring to PNCI and PCI loans we use the terms “nonaccretable difference”, “accretable yield”, or “purchase discount”. Nonaccretable difference is the difference between undiscounted contractual cash flows due and undiscounted cash flows we expect to collect, or put another way, it is the undiscounted contractual cash flows we do not expect to collect. Accretable yield is the difference between undiscounted cash flows we expect to collect and the value at which we have recorded the loan on our financial statements. On the date of acquisition, all purchased loans are recorded on our consolidated financial statements at estimated fair value. Purchase discount is the difference between the estimated fair value of loans on the date of acquisition and the principal amount owed by the borrower, net of charge offs, on the date of acquisition. We may also refer to “discounts to principal balance of loans owed, net of charge-offs”. Discounts to principal balance of loans owed, net of charge-offs is the difference between principal balance of loans owed, net of charge-offs, and loans as recorded on our financial statements. Discounts to principal balance of loans owed, net of charge-offs arise from purchase discounts, and equal the purchase discount on the acquisition date.

Loans are also categorized as “covered” or “noncovered”. Covered loans refer to loans covered by a FDIC loss sharing agreement. Noncovered loans refer to loans not covered by a FDIC loss sharing agreement.

Originated loans and PNCI loans are reviewed on an individual basis for reclassification to nonaccrual status when any one of the following occurs: the loan becomes 90 days past due as to interest or principal, the full and timely collection of additional interest or principal becomes uncertain, the loan is classified as doubtful by internal credit review or bank regulatory agencies, a portion of the principal balance has been charged off, or the Company takes possession of the collateral. Loans that are placed on nonaccrual even though the borrowers continue to repay the loans as scheduled are classified as “performing nonaccrual” and are included in total nonperforming loans. The reclassification of loans as nonaccrual does not necessarily reflect Management’s judgment as to whether they are collectible.

Interest income on originated nonaccrual loans that would have been recognized during the years ended December 31, 2014, 2013 and 2012, if all such loans had been current in accordance with their original terms, totaled $2,734,000, $1,524,000, and $5,281,000, respectively. Interest income actually recognized on these originated loans during the years ended December 31, 2014, 2013 and 2012 was $81,000, $273,000, and $936,000, respectively. Interest income on PNCI nonaccrual loans that would have been recognized during the years ended December 31, 2014, 2013 and 2012, if all such loans had been current in accordance with their original terms, totaled $254,000, $295,000, and $284,000. Interest income actually recognized on these PNCI loans during the years ended December 31, 2014, 2013 and 2012 was $4,000, $38,000, and $136,000.

The Company’s policy is to place originated loans and PNCI loans 90 days or more past due on nonaccrual status. In some instances when an originated loan is 90 days past due Management does not place it on nonaccrual status because the loan is

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well secured and in the process of collection. A loan is considered to be in the process of collection if, based on a probable specific event, it is expected that the loan will be repaid or brought current. Generally, this collection period would not exceed 30 days. Loans where the collateral has been repossessed are classified as foreclosed assets. Management considers both the adequacy of the collateral and the other resources of the borrower in determining the steps to be taken to collect nonaccrual loans. Alternatives that are considered are foreclosure, collecting on guarantees, restructuring the loan or collection lawsuits.

The following table sets forth the amount of the Bank’s nonperforming assets as of the dates indicated. For purposes of the following table, “PCI – other” loans that are 90 days past due and still accruing are not considered nonperforming loans. “Performing nonaccrual loans” are loans that may be current for both principal and interest payments, or are less than 90 days past due, but for which payment in full of both principal and interest is not expected, and are not well secured and in the process of collection:

	December 31,
(dollars in thousands)	2014			2013			2012			2011			2010
Performing nonaccrual loans	$	45,072		$	48,112		$	49,045		$	61,164		$	36,518
Nonperforming nonaccrual loans		2,517			5,104			23,471			23,647			39,224
Total nonaccrual loans		47,589			53,216			72,516			84,811			75,742
Originated and PNCI loans 90 days past due and still accruing		—			—			—			920			245
Total nonperforming loans		47,589			53,216			72,516			85,731			75,987
Noncovered foreclosed assets		4,449			5,588			5,957			13,268			5,000
Covered foreclosed assets		445			674			1,541			3,064			4,913
Total nonperforming assets	$	52,483		$	59,478		$	80,014		$	102,063		$	85,900
U.S. government, including its agenciesand its government-sponsored agencies,guaranteed portion of nonperforming loans	$	123		$	101		$	131		$	3,061		$	3,937
Indemnified portion ofcovered foreclosed assets	$	356		$	539		$	1,233		$	2,451		$	3,930
Nonperforming assets to total assets		1.88	%		2.30	%		3.07	%		3.99	%		3.92	%
Nonperforming loans to total loans		2.08	%		3.18	%		4.63	%		5.53	%		5.35	%
Allowance for loan losses to nonperforming loans 77%					72	%		59	%		54	%		56	%
Allowance for loan losses, unamortized loan fees,and discounts to loan principal balances owed		3.31	%		4.09	%		5.30	%		6.34	%		3.74	%

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The following tables set forth the amount of the Bank’s nonperforming assets as of the dates indicated. For purposes of the following tables, “PCI – other” loans that are 90 days past due and still accruing are not considered nonperforming loans. “Performing nonaccrual loans” are loans that may be current for both principal and interest payments, or are less than 90 days past due, but for which payment in full of both principal and interest is not expected, and are not well secured and in the process of collection:

	December 31, 2014
(dollars in thousands)	Originated			PNCI			PCI - cash basis			PCI - other			Total
Performing nonaccrual loans	$	30,449		$	1,233		$	5,587		$	7,803		$	45,072
Nonperforming nonaccrual loans		2,080			413			24			—			2,517
Total nonaccrual loans		32,529			1,646			5,611			7,803			47,589
Originated loans 90 days past due and still accruing		—			—			—			—			—
Total nonperforming loans		32,529			1,646			5,611			7,803			47,589
Noncovered foreclosed assets		3,316			—			—			1,133			4,449
Covered foreclosed assets		—			—			—			445			445
Total nonperforming assets	$	35,845		$	1,646		$	5,611		$	9,381		$	52,483
U.S. government, including its agencies and its government-sponsored agencies, guaranteed portion of nonperforming loans	$	123			—			—			—		$	123
Indemnified portion of covered foreclosed assets		—			—			—		$	356		$	356
Nonperforming assets to total assets		1.28	%		0.06	%		0.20	%		0.34	%		1.88	%
Nonperforming loans to total loans		2.02	%		0.27	%		99.98	%		16.50	%		2.08	%
Allowance for loan losses to nonperforming loans		92	%		200	%		6	%		39	%		77	%
Allowance for loan losses, unamortized loan fees, and discounts to loan principal balances owed		2.14	%		3.30	%		64.45	%		21.09	%		3.31	%

	December 31, 2013
(dollars in thousands)	Originated			PNCI			PCI - cash basis			PCI - other			Total
Performing nonaccrual loans	$	40,294		$	1,649		$	6,169			—		$	48,112
Nonperforming nonaccrual loans		4,837			217			50			—			5,104
Total nonaccrual loans		45,131			1,866			6,219			—			53,216
Originated and PNCI loans 90 days past due and still accruing		—			—			—			—			—
Total nonperforming loans		45,131			1,866			6,219			—			53,216
Noncovered foreclosed assets		5,479			—			—		$	109			5,588
Covered foreclosed assets		—			—			—			674			674
Total nonperforming assets	$	50,610		$	1,866		$	6,219		$	783		$	59,478
U.S. government, including its agencies and its government-sponsored agencies, guaranteed portion of nonperforming loans	$	101											$	101
Indemnified portion of covered foreclosed assets		—			—			—		$	539		$	539
Nonperforming assets to total assets														2.30	%
Nonperforming loans to total loans		3.04	%		1.38	%		100.0	%		—			3.18	%
Allowance for loan losses to nonperforming loans		69	%		153	%		6	%		n/m			72	%
Allowance for loan losses, unamortized loan fees, and discounts to loan principal balances owed		2.36	%		7.62	%		64.5	%		22.93	%		4.09	%

n/m – not meaningful

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The following table shows the activity in the balance of nonperforming assets for the year ended December 31, 2014:

(dollars in thousands):	Balance at December 31, 2014		New NPA		Advances/ Capitalized Costs		Pay-downs /Sales /Upgrades			Charge-offs/ Write-downs			Transfers to Foreclosed Assets			Category Changes			Balance at December 31, 2013
Real estate mortgage:
Residential	$	4,613	$	1,797	$	25	$	(1,216	)		(171	)		(781	)		—		$	4,959
Commercial		26,343		7,931		1,049		(11,706	)		(110	)		(3,659	)		967			31,871
Consumer
Home equity lines		10,376		3,002		607		(2,737	)		(1,094	)		(653	)		(350	)		11,601
Home equity loans		1,367		670		2		(179	)		(28	)		(167	)		350			719
Auto indirect		18		2		—		(35	)		(3	)		—			—			54
Other consumer		186		330		—		(55	)		(120	)		(31	)		—			62
Commercial		2,186		2,797		417		(881	)		(479	)		—			(967	)		1,299
Construction:
Residential		2,401		4		—		(118	)		(4	)		—			46			2,473
Commercial		99		171		—		(135	)		(69	)		—			(46	)		178
Total nonperforming loans		47,589		16,704		2,100		(17,062	)		(2,078	)		(5,291	)		—			53,216
Noncovered foreclosed assets		4,449		695		462		(7,391	)		(196	)		5,291			—			5,588
Covered foreclosed assets		445		—		—		(217	)		(12	)		—			—			674
Total nonperforming assets	$	52,483	$	17,399	$	2,562	$	(24,670	)	$	(2,286	)		—			—		$	59,478

The table above does not include deposit overdraft charge-offs.

The following tables and narratives describe the activity in the balance of nonperforming assets during each of the three-month periods ending March 31, June 30, September 30, and December 31, 2014. These tables and narratives are presented in chronological order:

Changes in nonperforming assets during the three months ended December 31, 2014

(in thousands):	Balance at December 31, 2014		New NPA		Advances/ Capitalized Costs		Pay-downs /Sales /Upgrades			Charge-offs/ Write-downs			Transfers to Foreclosed Assets			Category Changes			Balance at September 30, 2014
Real estate mortgage:
Residential	$	4,613		1,351		—	$	(426	)	$	(4	)	$	(675	)		—		$	4,367
Commercial		26,343		6,139		—		(2,043	)		(3	)		—			—			22,250
Consumer
Home equity lines		10,376		640		120		(349	)		(102	)		(111	)		(64	)		10,242
Home equity loans		1,367		524		—		(42	)		(17	)		—			64			838
Auto indirect		18		2		—		(4	)		(3	)		—			—			23
Other consumer		186		235		—		(31	)		(37	)		(31	)		—			50
Commercial		2,186		2,165		—		(222	)		(78	)		—			—			321
Construction:
Residential		2,401		—		—		(36	)		—			—			—			2,437
Commercial		99		—		—		(15	)		—			—			—			114
Total nonperforming loans		47,589		11,056		120		(3,168	)		(244	)		(817	)		—			40,642
Noncovered foreclosed assets		4,449		695		—		(1,570	)		(69	)		817			—			4,576
Covered foreclosed assets		445				—		(75	)		—			—			—			520
Total nonperforming assets	$	52,483	$	11,751	$	120	$	(4,813	)	$	(313	)		—			—		$	45,738

Nonperforming assets increased during the fourth quarter of 2014 by $6,745,000 (14.75%) to $52,483,000 at December 31, 2014 compared to $45,738,000 at September 30, 2014. The increase in nonperforming assets during the fourth quarter of 2014 was primarily the result of new nonperforming loans of $11,056,000, including $9,411,000 in nonperforming loans from the acquisition of North Valley Bancorp, new foreclosed assets of $695,000 also from the North Valley Bancorp acquisition, advances on existing nonperforming loans and capitalized costs on foreclosed assets of $120,000, less pay-downs, sales or upgrades of nonperforming loans to performing status totaling $3,168,000, less dispositions of foreclosed assets totaling $1,645,000, less loan charge-offs of $244,000, and less write-downs of foreclosed assets of $70,000.

The $9,411,000 in nonperforming loans from the North Valley Bancorp acquisition was comprised of six residential real estate loans with total outstanding balances of $853,000, 15 commercial real estate loans with $6,135,000 outstanding, one home equity line of credit with a balance of $98,000, four home equity loans with $161,000 in outstanding balances, four nonperforming consumer loans with $64,000 outstanding, and four nonperforming C&I loans with $2,100,000 outstanding.

Other new nonperforming loans of $1,645,000 was comprised of $811,000 on four residential real estate loans, $3,000 on a single commercial real estate loan, $906,000 on 15 home equity lines and loans, $2,000 on two indirect auto loans, $202,000 on 24 consumer loans, and $64,000 on four C&I loans.

The $853,000 in acquired nonperforming residential real estate loans is primarily made up of two loans totaling $721,000 secured by single-family residences in Northern California. The $6,135,000 in acquired nonperforming commercial real estate loans is primarily

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comprised of two loans totaling $600,000 secured by single-family residences in Northern California, a single loan with $792,000 outstanding secured by a multi-family residence in Northern California, four loans totaling $3,096,000 secured by retail buildings in Northern California, a single loan with $377,000 outstanding secured by a commercial warehouse in Northern California, a single loan in the amount of $607,000 secured by a health club in Northern California, and a single loan in the amount of $355,000 secured by a mobile-home park in Northern California. All other acquired nonperforming loans have less than $250,000 outstanding and are spread throughout the company’s footprint.

Loan charge-offs during the three months ended December 31, 2014

In the fourth quarter of 2014, the Company recorded $244,000 in loan charge-offs and $173,000 in deposit overdraft charge-offs less $406,000 in loan recoveries and $99,000 in deposit overdraft recoveries resulting in $88,000 of net loan recoveries. Primary causes of the loan charges taken in the fourth quarter of 2014 were gross charge-offs of $4,000 on a two residential real estate loans, $3,000 on a single commercial real estate loan, $119,000 on four home equity lines and loans, $3,000 on two indirect auto loans, $37,000 on 17 other consumer loans, and $78,000 on three C&I loans. During the fourth quarter of 2014, there were no individual charges greater than $250,000.

Differences between the amounts explained in this section and the total charge-offs listed for a particular category are generally made up of individual charges of less than $250,000 each. Generally losses are triggered by non-performance by the borrower and calculated based on any difference between the current loan amount and the current value of the underlying collateral less any estimated costs associated with the disposition of the collateral.

Changes in nonperforming assets during the three months ended September 30, 2014

(in thousands):	Balance at September 30, 2014		New NPA		Advances/ Capitalized Costs		Pay-downs /Sales /Upgrades			Charge-offs/ Write-downs			Transfers to Foreclosed Assets			Category Changes			Balance at June 30, 2014
Real estate mortgage:
Residential	$	4,367	$	188		1	$	(441	)	$	(31	)	$	(106	)		—		$	4,756
Commercial		22,250		861		—		(3,299	)		(50	)		(47	)		—			24,785
Consumer
Home equity lines		10,242		345		34		(552	)		(137	)		(205	)		(77	)		10,834
Home equity loans		838		—		1		(53	)		—			—			77			813
Auto indirect		23		—		—		(13	)		—			—			—			36
Other consumer		50		18		—		(4	)		(13	)		—			—			49
Commercial		321		61		—		(173	)		(10	)		—			—			443
Construction:
Residential		2,437		—		—		(31	)		—			—			—			2,468
Commercial		114		102		—		(4	)		—			—			—			16
Total nonperforming loans		40,642		1,575		36		(4,570	)		(241	)		(358	)		—			44,200
Noncovered foreclosed assets		4,576		—		—		(949	)		(97	)	$	358			—			5,264
Covered foreclosed assets		520		—		—		—			(1	)		—			—			521
Total nonperforming assets	$	45,738	$	1,575	$	36	$	(5,519	)	$	(339	)		—			—		$	49,985

Nonperforming assets decreased during the third quarter of 2014 by $4,247,000 (8.50%) to $45,738,000 at September 30, 2014 compared to $49,985,000 at June 30, 2014. The decrease in nonperforming assets during the third quarter of 2014 was primarily the result of new nonperforming loans of $1,575,000, advances on existing nonperforming loans and capitalized costs on foreclosed assets of $36,000, less pay-downs, sales or upgrades of nonperforming loans to performing status totaling $4,570,000, less dispositions of foreclosed assets totaling $949,000, less loan charge-offs of $241,000, and less write-downs of foreclosed assets of $98,000.

The $1,575,000 in new nonperforming loans during the third quarter of 2014 was comprised of increases of $188,000 on two residential real estate loans, $861,000 on five commercial real estate loans, $345,000 on seven home equity lines and loans, $18,000 on 13 consumer loans, $61,000 on four C&I loans, and $102,000 on a single commercial construction loan. The $861,000 in new nonperforming commercial real estate loans was primarily made up of one loan in the amount of $360,000 secured by a multi-family investment property in northern California. Related charge-offs are discussed below.

Loan charge-offs during the three months ended September 30, 2014

In the third quarter of 2014, the Company recorded $241,000 in loan charge-offs and $105,000 in deposit overdraft charge-offs less $1,211,000 in loan recoveries and $64,000 in deposit overdraft recoveries resulting in $929,000 of net loan recoveries. Primary causes of the loan charges taken in the third quarter of 2014 were gross charge-offs of $31,000 on a single residential real estate loan, $50,000 on three commercial real estate loans, $137,000 on four home equity lines and loans, $13,000 on 12 other consumer loans, and $10,000 on three C&I loans. During the third quarter of 2014, there were no individual charges greater than $250,000.

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Changes in nonperforming assets during the three months ended June 30, 2014

(in thousands):	Balance at June 30, 2014		New NPA		Advances/ Capitalized Costs		Pay-downs /Sales /Upgrades			Charge-offs/ Write-downs			Transfers to Foreclosed Assets			Category Changes			Balance at March 31, 2014
Real estate mortgage:
Residential	$	4,756	$	186	$	24	$	(182	)		—			—			—		$	4,728
Commercial		24,785		71		1,045		(4,643	)	$	(44	)	$	(3,287	)		—			31,643
Consumer
Home equity lines		10,834		785		19		(485	)		(677	)		(116	)	$	(126	)		11,434
Home equity loans		813		46		—		(64	)		(11	)		—			126			716
Auto indirect		36		—		—		(8	)		—			—			—			44
Other consumer		49		29		—		(13	)		(39	)		—			—			72
Commercial		443		170		—		(377	)		(152	)		—			—			802
Construction:
Residential		2,468		—		—		(42	)		—			—			—			2,510
Commercial		16		—		—		(3	)		—			—			—			19
Total nonperforming loans		44,200		1,287		1,088		(5,817	)		(923	)		(3,403	)		—			51,968
Noncovered foreclosed assets		5,264						(687	)		(3	)		3,403			—			2,551
Covered foreclosed assets		521		—		—		(142	)		(1	)		—			—			664
Total nonperforming assets	$	49,985	$	1,287	$	1,088	$	(6,646	)	$	(927	)		—			—		$	55,183

Nonperforming assets decreased during the second quarter of 2014 by $5,198,000 (9.42%) to $49,985,000 at June 30, 2014 compared to $55,183,000 at March 31, 2014. The decrease in nonperforming assets during the second quarter of 2014 was primarily the result of new nonperforming loans of $1,287,000, advances on existing nonperforming loans and capitalized costs on foreclosed assets of $1,088,000, less pay-downs, sales or upgrades of nonperforming loans to performing status totaling $5,817,000, less dispositions of foreclosed assets totaling $829,000, less loan charge-offs of $923,000, and less write-downs of foreclosed assets of $4,000.

The $1,287,000 in new nonperforming loans during the second quarter of 2014 was comprised of increases of $186,000 on three residential real estate loans, $71,000 on two commercial real estate loans, $831,000 on 10 home equity lines and loans, $29,000 on eight consumer loans, and $170,000 on eight C&I loans.

Loan charge-offs during the three months ended June 30, 2014

In the second quarter of 2014, the Company recorded $923,000 in loan charge-offs and $105,000 in deposit overdraft charge-offs less $878,000 in loan recoveries and $88,000 in deposit overdraft recoveries resulting in $62,000 of net loan charge-offs. Primary causes of the loan charges taken in the second quarter of 2014 were gross charge-offs of $44,000 on four commercial real estate loans, $688,000 on 11 home equity lines and loans, $39,000 on nine other consumer loans, and $170,000 on seven C&I loans. During the second quarter of 2014, there were no individual charges greater than $250,000.

Changes in nonperforming assets during the three months ended March 31, 2014

(in thousands):	Balance at March 31, 2014		New NPA		Advances/ Capitalized Costs		Pay-downs /Sales /Upgrades			Charge-offs/ Write-downs			Transfers to Foreclosed Assets			Category Changes			Balance at December 31, 2013
Real estate mortgage:
Residential	$	4,728	$	72		—	$	(167	)	$	(136	)		—			—		$	4,959
Commercial		31,643		860	$	4		(1,721	)		(13	)	$	(325	)	$	967			31,871
Consumer
Home equity lines		11,434		1,232		434		(1,351	)		(178	)		(221	)		(83	)		11,601
Home equity loans		716		100		1		(20	)		—			(167	)		83			719
Auto indirect		44		—		—		(10	)		—			—			—			54
Other consumer		72		48		—		(7	)		(31	)		—			—			62
Commercial		802		401		417		(109	)		(239	)		—			(967	)		1,299
Construction:
Residential		2,510		4		—		(9	)		(4	)		—			46			2,473
Commercial		19		69		—		(113	)		(69	)		—		$	(46	)		178
Total nonperforming loans		51,968		2,786		856		(3,507	)		(670	)		(713	)		—			53,216
Noncovered foreclosed assets		2,551		—		462		(4,186	)		(26	)	$	713			—			5,588
Covered foreclosed assets		664		—		—		—			(10	)		—			—			674
Total nonperforming assets	$	55,183	$	2,786	$	1,318	$	(7,693	)	$	(706	)		—			—		$	59,478

Nonperforming assets decreased during the first quarter of 2014 by $4,295,000 (7.22%) to $55,183,000 at March 31, 2014 compared to $59,478,000 at December 31, 2013. The decrease in nonperforming assets during the first quarter of 2014 was primarily the result of new nonperforming loans of $2,786,000, advances on existing nonperforming loans and capitalized costs on foreclosed assets of $1,318,000, less pay-downs, sales or upgrades of nonperforming loans to performing status totaling $3,507,000, less dispositions of foreclosed assets totaling $4,186,000, less loan charge-offs of $670,000, and less write-downs of foreclosed assets of $36,000.

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The $2,786,000 in new nonperforming loans during the first quarter of 2014 was comprised of increases of $72,000 on one residential real estate loan, $860,000 on six commercial real estate loans, $1,332,000 on 17 home equity lines and loans, $48,000 on 14 consumer loans, $401,000 on nine C&I loans, $4,000 on one residential construction loan, and $69,000 on one commercial construction loan.

The $860,000 in new nonperforming commercial real estate loans was primarily made up of two loans totaling $514,000 secured by agricultural production land in central California. Related charge-offs are discussed below.

Loan charge-offs during the three months ended March 31, 2014

In the first quarter of 2014, the Company recorded $670,000 in loan charge-offs and $96,000 in deposit overdraft charge-offs less $2,068,000 in loan recoveries and $130,000 in deposit overdraft recoveries resulting in $1,432,000 of net loan recoveries. Primary causes of the loan charges taken in the first quarter of 2014 were gross charge-offs of $136,000 on one residential real estate loan, $13,000 on one commercial real estate loan, $178,000 on 7 home equity lines and loans, $31,000 on 14 other consumer loans, $239,000 on eight C&I loans, $4,000 on one residential construction loan, and $69,000 on one commercial construction loan. During the first quarter of 2014, there were no individual charges greater than $250,000.

Allowance for Loan Losses

The Company’s allowance for loan losses is comprised of allowances for originated, PNCI and PCI loans. All such allowances are established through a provision for loan losses charged to expense.

Originated and PNCI loans, and deposit related overdrafts are charged against the allowance for originated loan losses when Management believes that the collectability of the principal is unlikely or, with respect to consumer installment loans, according to an established delinquency schedule. The allowances for originated and PNCI loan losses are amounts that Management believes will be adequate to absorb probable losses inherent in existing originated loans, based on evaluations of the collectability, impairment and prior loss experience of those loans and leases. The evaluations take into consideration such factors as changes in the nature and size of the portfolio, overall portfolio quality, loan concentrations, specific problem loans, and current economic conditions that may affect the borrower’s ability to pay. The Company defines an originated or PNCI loan as impaired when it is probable the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement. Impaired originated and PNCI loans are measured based on the present value of expected future cash flows discounted at the loan’s original effective interest rate. As a practical expedient, impairment may be measured based on the loan’s observable market price or the fair value of the collateral if the loan is collateral dependent. When the measure of the impaired loan is less than the recorded investment in the loan, the impairment is recorded through a valuation allowance.

In situations related to originated and PNCI loans where, for economic or legal reasons related to a borrower’s financial difficulties, the Company grants a concession for other than an insignificant period of time to the borrower that the Company would not otherwise consider, the related loan is classified as a troubled debt restructuring (TDR). The Company strives to identify borrowers in financial difficulty early and work with them to modify to more affordable terms before their loan reaches nonaccrual status. These modified terms may include rate reductions, principal forgiveness, payment forbearance and other actions intended to minimize the economic loss and to avoid foreclosure or repossession of the collateral. In cases where the Company grants the borrower new terms that provide for a reduction of either interest or principal, the Company measures any impairment on the restructuring as noted above for impaired loans. TDR loans are classified as impaired until they are fully paid off or charged off. Loans that are in nonaccrual status at the time they become TDR loans, remain in nonaccrual status until the borrower demonstrates a sustained period of performance which the Company generally believes to be six consecutive months of payments, or equivalent. Otherwise, TDR loans are subject to the same nonaccrual and charge-off policies as noted above with respect to their restructured principal balance.

Credit risk is inherent in the business of lending. As a result, the Company maintains an allowance for loan losses to absorb losses inherent in the Company’s originated and PNCI loan portfolios. These are maintained through periodic charges to earnings. These charges are included in the Consolidated Income Statements as provision for loan losses. All specifically identifiable and quantifiable losses are immediately charged off against the allowance. However, for a variety of reasons, not all losses are immediately known to the Company and, of those that are known, the full extent of the loss may not be quantifiable at that point in time. The balance of the Company’s allowances for originated and PNCI loan losses are meant to be an estimate of these unknown but probable losses inherent in these portfolios.

The Company formally assesses the adequacy of the allowance for originated and PNCI loan losses on a quarterly basis. Determination of the adequacy is based on ongoing assessments of the probable risk in the outstanding originated and PNCI loan portfolios, and to a lesser extent the Company’s originated and PNCI loan commitments. These assessments include the periodic re-grading of credits based on changes in their individual credit characteristics including delinquency, seasoning, recent financial performance of the borrower, economic factors, changes in the interest rate environment, growth of the portfolio as a whole or by segment, and other factors as warranted. Loans are initially graded when originated or acquired. They are re-graded as they are renewed, when there is a new loan to the same borrower, when identified facts demonstrate heightened risk of nonpayment, or if they become delinquent. Re-grading of larger problem loans occurs at least quarterly. Confirmation of the quality of the grading process is obtained by independent credit reviews conducted by consultants specifically hired for this purpose and by various bank regulatory agencies.

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The Company’s method for assessing the appropriateness of the allowance for originated and PNCI loan losses includes specific allowances for impaired loans and leases, formula allowance factors for pools of credits, and allowances for changing environmental factors (e.g., interest rates, growth, economic conditions, etc.). Allowance factors for loan pools are based on historical loss experience by product type and prior risk rating. Allowances for impaired loans are based on analysis of individual credits. Allowances for changing environmental factors are Management’s best estimate of the probable impact these changes have had on the originated or PNCI loan portfolio as a whole. The allowances for originated and PNCI loans are included in the allowance for loan losses.

As noted above, the allowances for originated and PNCI loan losses consists of a specific allowance, a formula allowance, and an allowance for environmental factors. The first component, the specific allowance, results from the analysis of identified credits that meet management’s criteria for specific evaluation. These loans are reviewed individually to determine if such loans are considered impaired. Impaired loans are those where management has concluded that it is probable that the borrower will be unable to pay all amounts due under the contractual terms. Impaired loans are specifically reviewed and evaluated individually by management for loss potential by evaluating sources of repayment, including collateral as applicable, and a specified allowance for loan losses is established where necessary.

During the three months ended March 31, 2013, the Company changed the method it uses to estimate net sale proceeds from real estate collateral sales when calculating the allowance for loan losses associated with impaired real estate collateral dependent loans. Previously, the Company used the greater of fifteen percent or actual estimated selling costs. Currently, the Company uses the actual estimated selling costs, and an adjustment to appraised value based on the age of the appraisal. These changes are intended to more accurately reflect the estimated net sale proceeds from the sale of impaired collateral dependent real estate loans. This change in methodology resulted in the allowance for loan losses as of March 31, 2013 being $494,000 more than it would have been without this change in methodology.

The second component of the allowance for originated and PNCI loan losses, the formula allowance, is an estimate of the probable losses that have occurred across the major loan categories in the Company’s originated and PNCI loan portfolios. This analysis is based on loan grades by pool and the loss history of these pools. This analysis covers the Company’s entire originated and PNCI loan portfolios including unused commitments but excludes any loans that were analyzed individually and assigned a specific allowance as discussed above. The total amount allocated for this component is determined by applying loss estimation factors to outstanding loans and loan commitments. The loss factors were previously based primarily on the Company’s historical loss experience tracked over a five-year period and adjusted as appropriate for the input of current trends and events. Because historical loss experience varies for the different categories of originated loans, the loss factors applied to each category also differed. In addition, there is a greater chance that the Company would suffer a loss from a loan that was risk rated less than satisfactory than if the loan was last graded satisfactory. Therefore, for any given category, a larger loss estimation factor was applied to less than satisfactory loans than to those that the Company last graded as satisfactory. The resulting formula allowance was the sum of the allocations determined in this manner.

During the three months ended June 30, 2013, the Company modified its loss migration analysis methodology used to determine the formula allowance factors. When the Company originally established its loss migration analysis methodology during the quarter ended March 31, 2012, it reviewed the loss experience of each quarter over the previous three years in order to calculate an annualized loss rate by loan category and risk rating. The use of three years of loss experience data was originally used because that was the extent of the detailed loss data, by loan category and risk rating that was available at the time. This three year historical look-back period was used through the quarter ended March 31, 2013. Starting with the quarter ended June 30, 2013, the Company reviews all available detailed loss experience data, going back to, and including, the quarter end June 30, 2008, and does not limit the look-back period to the most recent three years of historical loss data. Using this data, the Company calculates loss factors for each quarter from the quarter ended June 30, 2009 to the most recent quarter. The Company then calculates a weighted average formula allowance factor for each loan category and risk rating with the most recent quarterly loss factor being weighted 125%, the quarter ended June 30, 2009 loss factor being weighted 75%, and the loss factors for all the quarters between the most recent quarter and the quarter ended June 30, 2009, being weighted on a linear scale from 75% to 125%. This change is intended to more accurately reflect the risk inherent in the loan portfolio by considering historical loss data for all years as the data for new periods becomes available. This change in methodology resulted in the allowance for loan losses as of June 30, 2013 being $1,314,000 more than it would have been without this change in methodology.

During the three months ended June 30, 2014, the Company refined the method it uses to evaluate historical losses for the purpose of estimating the pool allowance for unimpaired loans. In the third quarter of 2010, the Company moved from a six point grading system (Grades A-F) to a nine point risk rating system (Risk Ratings 1-9), primarily to allow for more distinction within the “Pass” risk rating. Initially, there was not sufficient loss experience within the nine point scale to complete a migration analysis for all nine risk ratings, all loans risk rated Pass or 2-5 were grouped together, a loss rate was calculated for that group, and that loss rate was established as the loss rate for risk rating 4. The reserve ratios for risk ratings

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2, 3 and 5 were then interpolated from that figure. As of June 30, 2014, the Company was able to compile twelve quarters of historical loss information for all risk ratings and use that information to calculate the loss rates for each of the nine risk ratings without interpolation. This refinement led to an increase of $1,438,000 in the reserve requirement for unimpaired loans, driven primarily by home equity lines of credit with a risk rating of 5 or “Pass-Watch.”

The third component of the allowances for originated and PNCI loan losses, the environmental factor allowance, is a component that is not allocated to specific loans or groups of loans, but rather is intended to absorb losses that may not be provided for by the other components.

There are several primary reasons that the other components discussed above might not be sufficient to absorb the losses present in the originated and PNCI loan portfolios, and the environmental factor allowance is used to provide for the losses that have occurred because of them.

The first reason is that there are limitations to any credit risk grading process. The volume of originated and PNCI loans makes it impractical to re-grade every loan every quarter. Therefore, it is possible that some currently performing originated or PNCI loans not recently graded will not be as strong as their last grading and an insufficient portion of the allowance will have been allocated to them. Grading and loan review often must be done without knowing whether all relevant facts are at hand. Troubled borrowers may deliberately or inadvertently omit important information from reports or conversations with lending officers regarding their financial condition and the diminished strength of repayment sources.

The second reason is that the loss estimation factors are based primarily on historical loss totals. As such, the factors may not give sufficient weight to such considerations as the current general economic and business conditions that affect the Company’s borrowers and specific industry conditions that affect borrowers in that industry. The factors might also not give sufficient weight to other environmental factors such as changing economic conditions and interest rates, portfolio growth, entrance into new markets or products, and other characteristics as may be determined by Management.

Specifically, in assessing how much environmental factor allowance needed to be provided, management considered the following:

• with respect to the economy, management considered the effects of changes in GDP, unemployment, CPI, debt statistics, housing starts, housing sales, auto sales, agricultural prices, and other economic factors which serve as indicators of economic health and trends and which may have an impact on the performance of our borrowers, and

• with respect to changes in the interest rate environment, management considered the recent changes in interest rates and the resultant economic impact it may have had on borrowers with high leverage and/or low profitability; and

• with respect to changes in energy prices, management considered the effect that increases, decreases or volatility may have on the performance of our borrowers, and

• with respect to loans to borrowers in new markets and growth in general, management considered the relatively short seasoning of such loans and the lack of experience with such borrowers, and

• with respect to the potential imprecision in the total Allowance for Loan Losses calculation, management previously included an unspecified reserve equal to 1.00% of the total allowance and reserve for unfunded commitments calculated. For the period ended March 31, 2012, this unspecified reserve was eliminated resulting in a reduction in allowances required of $425,000, and

• with respect to loans that have not yet been identified as impaired, management considered the volume and severity of past due loans. This environmental consideration was added to the Company’s Allowance for Loan Losses methodology for the period ended March 31, 2012 and resulted in additional allowances required of $459,000.

Each of these considerations was assigned a factor and applied to a portion or the entire originated and PNCI loan portfolios. Since these factors are not derived from experience and are applied to large non-homogeneous groups of loans, they are available for use across the portfolio as a whole.

During the three months ended September 30, 2013, the Company modified its methodology used to determine the allowance for changing environmental factors. Previously, the Company compared the current value of each environmental factor to a fixed baseline value. The deviation of the current value from the baseline value was then multiplied by a conversion factor to determine the required allowance related to each environmental factor. As of September 30, 2013, the Company replaced the fixed baseline values with average baseline values derived from historical averages, and adjusted the conversion factors. This change is intended to more accurately reflect the risk inherent in the portfolio by recognizing that baseline, or normal, levels for environmental factors may change over time. This change in methodology resulted in the allowance for loan losses as of September 30, 2013 being $1,665,000 more than it would have been without this change in methodology.

During the three months ended March 31, 2014, the Company modified its methodology used to determine the allowance for changing environmental factors by adding a new environmental factor based on the California Home Affordability Index (“CHAI”). The CHAI measures the percentage of households in California that can afford to purchase the median priced

41

home in California based on current home prices and mortgage interest rates. The use of the CHAI environmental factor consists of comparing the current CHAI to its historical baseline, and allows management to consider the adverse impact that a lower than historical CHAI may have on general economic activity and the performance of our borrowers. Based on an analysis of historical data, management believes this environmental factor gives a better estimate of current economic activity compared to other environmental factors that may lag current economic activity to some extent. This change in methodology resulted in no change to the allowance for loan losses as of March 31, 2014 compared to what it would have been without this change in methodology.

Acquired loans are valued as of acquisition date in accordance with Financial Accounting Standards Board Accounting Standards Codification (“FASB ASC”) Topic 805, Business Combinations. Loans purchased with evidence of credit deterioration since origination for which it is probable that all contractually required payments will not be collected are referred to as purchased credit impaired (PCI) loans. PCI loans are accounted for under FASB ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality. In addition, because of the significant credit discounts associated with the loans acquired in the Granite acquisition, the Company elected to account for all loans acquired in the Granite acquisition under FASB ASC Topic 310-30, and classify them all as PCI loans. Under FASB ASC Topic 805 and FASB ASC Topic 310-30, PCI loans are recorded at fair value at acquisition date, factoring in credit losses expected to be incurred over the life of the loan. Accordingly, an allowance for loan losses is not carried over or recorded as of the acquisition date. Fair value is defined as the present value of the future estimated principal and interest payments of the loan, with the discount rate used in the present value calculation representing the estimated effective yield of the loan. The difference between contractual future payments and estimated future payments is referred to as the nonaccretable difference. The difference between estimated future payments and the present value of the estimated future payments is referred to as the accretable yield. The accretable yield represents the amount that is expected to be recorded as interest income over the remaining life of the loan. If after acquisition, the Company determines that the future cash flows of a PCI loan are expected to be more than the originally estimated, an increase in the discount rate (effective yield) would be made such that the newly increased accretable yield would be recognized, on a level yield basis, over the remaining estimated life of the loan. If after acquisition, the Company determines that the future cash flows of a PCI loan are expected to be less than the previously estimated, the discount rate would first be reduced until the present value of the reduced cash flow estimate equals the previous present value however, the discount rate may not be lowered below its original level. If the discount rate has been lowered to its original level and the present value has not been sufficiently lowered, an allowance for loan loss would be established through a provision for loan losses charged to expense to decrease the present value to the required level. If the estimated cash flows improve after an allowance has been established for a loan, the allowance may be partially or fully reversed depending on the improvement in the estimated cash flows. Only after the allowance has been fully reversed may the discount rate be increased. PCI loans are put on nonaccrual status when cash flows cannot be reasonably estimated. PCI loans are charged off when evidence suggests cash flows are not recoverable. Foreclosed assets from PCI loans are recorded in foreclosed assets at fair value with the fair value at time of foreclosure representing cash flow from the loan. ASC 310-30 allows PCI loans with similar risk characteristics and acquisition time frame to be “pooled” and have their cash flows aggregated as if they were one loan.

The Components of the Allowance for Loan Losses

The following table sets forth the Bank’s allowance for loan losses as of the dates indicated (dollars in thousands):

	December 31,
	2014			2013			2012			2011			2010
Allowance for originated and PNCI loan losses:
Specific allowance	$	4,267		$	3,975		$	4,505		$	5,993		$	6,945
Formula allowance		22,076			24,611			29,314			32,023			31,070
Environmental factors allowance		6,815			5,619			3,919			3,687			2,948
Allowance for originated and PNCI loan losses		33,158			34,205			37,738			41,703			40,963
Allowance for PCI loan losses		3,427			4,040			4,910			4,211			1,608
Allowance for loan losses	$	36,585		$	38,245		$	42,648		$	45,914		$	42,571
Allowance for loan losses to loans		1.60	%		2.29	%		2.73	%		2.96	%		3.00	%

Based on the current conditions of the loan portfolio, management believes that the $36,585,000 allowance for loan losses at December 31, 2014 is adequate to absorb probable losses inherent in the Bank’s loan portfolio. No assurance can be given, however, that adverse economic conditions or other circumstances will not result in increased losses in the portfolio.

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The following table summarizes the allocation of the allowance for loan losses between loan types:

	December 31,
(dollars in thousands)	2014		2013		2012		2011		2010
Real estate mortgage	$	12,313	$	12,854	$	12,305	$	15,621	$	15,707
Consumer		18,201		18,238		23,461		20,506		17,779
Commercial		4,226		4,331		4,703		6,545		5,991
Real estate construction		1,845		2,822		2,179		3,242		3,094
Total allowance for loan losses	$	36,585	$	38,245	$	42,648	$	45,914	$	42,571

The following table summarizes the allocation of the allowance for loan losses between loan types as a percentage of the total allowance for loan losses:

	December 31,
	2014			2013			2012			2011			2010
Real estate mortgage		33.7	%		33.6	%		28.9	%		34.0	%		36.9	%
Consumer		49.7	%		47.7	%		55.0	%		44.7	%		41.8	%
Commercial		11.6	%		11.3	%		11.0	%		14.2	%		14.1	%
Real estate construction		5.0	%		7.4	%		5.1	%		7.1	%		7.2	%
Total allowance for loan losses		100.0	%		100.0	%		100.0	%		100.0	%		100.0	%

The following table summarizes the allocation of the allowance for loan losses between loan types as a percentage of the total loans:

	December 31,
	2014			2013			2012			2011			2010
Real estate mortgage		0.76	%		1.16	%		1.22	%		1.62	%		1.88	%
Consumer		4.36	%		4.76	%		6.08	%		5.05	%		4.49	%
Commercial		2.42	%		3.28	%		3.47	%		4.70	%		4.18	%
Real estate construction		2.46	%		5.75	%		6.59	%		8.18	%		6.89	%
Total allowance for loan losses		1.60	%		2.29	%		2.73	%		2.96	%		3.00	%

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The following tables summarize the activity in the allowance for loan losses, reserve for unfunded commitments, and allowance for losses (which is comprised of the allowance for loan losses and the reserve for unfunded commitments) for the years indicated (dollars in thousands):

	Year ended December 31,
	2014			2013			2012			2011			2010
Allowance for loan losses:
Balance at beginning of period	$	38,245		$	42,648		$	45,914		$	42,571		$	35,473
(Benefit from) provision for loan losses		(4,045	)		(715	)		9,423			23,060			37,458
Loans charged off:
Real estate mortgage:
Residential		(171	)		(46	)		(1,558	)		(1,655	)		(1,498	)
Commercial		(110	)		(2,038	)		(3,457	)		(4,451	)		(8,281	)
Consumer:
Home equity lines		(1,094	)		(2,651	)		(8,042	)		(9,746	)		(11,221	)
Home equity loans		(29	)		(94	)		(385	)		(789	)		(1,339	)
Auto indirect		(3	)		(68	)		(83	)		(427	)		(1,403	)
Other consumer		(599	)		(887	)		(1,202	)		(1,158	)		(1,687	)
Commercial		(479	)		(1,599	)		(1,251	)		(2,534	)		(3,539	)
Construction:
Residential		(4	)		(20	)		(406	)		(634	)		(4,666	)
Commercial		(69	)		(140	)		(100	)		(653	)		(94	)
Total loans charged off		(2,558	)		(7,543	)		(16,484	)		(22,047	)		(33,728	)
Recoveries of previously charged-off loans:
Real estate mortgage:
Residential		2			345			147			126			2
Commercial		540			994			1,020			127			1,456
Consumer:
Home equity lines		960			1,053			398			573			138
Home equity loans		34			41			100			45			15
Auto indirect		86			195			215			379			505
Other consumer		495			759			860			839			816
Commercial		1,268			340			643			173			205
Construction:
Residential		1,377			63			412			28			231
Commercial		181			65			—			40			—
Total recoveries of previously charged off loans		4,944			3,855			3,795			2,330			3,368
Net charge-offs		2,386			(3,688	)		(12,689	)		(19,717	)		(30,360	)
Balance at end of period	$	36,585		$	38,245		$	42,648		$	45,914		$	42,571
	Year ended December 31,
	2014			2013			2012			2011			2010
Reserve for unfunded commitments:
Balance at beginning of period	$	2,415		$	3,615		$	2,740		$	2,640		$	3,640
Provision for losses – unfunded commitments		(270	)		(1,200	)		875			100			(1,000	)
Balance at end of period	$	2,145		$	2,415		$	3,615		$	2,740		$	2,640
Balance at end of period:
Allowance for loan losses	$	36,585		$	38,245		$	42,648		$	45,914		$	42,571
Reserve for unfunded commitments		2,145			2,415			3,615			2,740			2,640
Allowance for loan losses and reserve for unfunded commitments	$	38,730		$	40,660		$	46,263		$	48,654		$	45,211
As a percentage of total loans at end of period:
Allowance for loan losses		1.60	%		2.29	%		2.73	%		2.96	%		3.00	%
Reserve for unfunded commitments		0.10	%		0.14	%		0.23	%		0.18	%		0.18	%
Allowance for loan losses and reserve for unfunded commitments		1.70	%		2.43	%		2.96	%		3.14	%		3.18	%
Average total loans	$	1,847,749		$	1,610,725		$	1,552,540		$	1,442,821		$	1,464,606
Ratios:
Net charge-offs during period to average loans outstanding during period		(0.13	)%		0.23	%		0.82	%		1.37	%		2.07	%
Provision for loan losses to average loans outstanding		(0.22	)%		(0.04	)%		0.61	%		1.60	%		2.56	%
Allowance for loan losses to loans at year end		1.60	%		2.29	%		2.73	%		2.96	%		3.00	%

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Foreclosed Assets, Net of Allowance for Losses

The following tables detail the components and summarize the activity in foreclosed assets, net of allowances for losses for the years indicated (dollars in thousands):

(dollars in thousands):	Balance at December 31, 2014		New NPA		Advances/ Capitalized Costs		Sales			Valuation Adjustments			Transfers from Loans		Category Changes		Balance at December 31, 2013
Noncovered:
Land & Construction	$	1,974	$	204		—	$	(603	)	$	(50	)	$	1,845		—	$	578
Residential real estate		1,622		244	$	462		(2,621	)		(87	)		1,680		—		1,944
Commercial real estate		853		247		—		(4,167	)		(59	)		1,766		—		3,066
Total noncovered		4,449		695		462		(7,391	)		(196	)		5,291		—		5,588
Covered:
Land & Construction		445		—		—		(217	)		(12	)		—		—		674
Residential real estate		—		—		—		—			—			—		—		—
Commercial real estate		—		—		—		—			—			—		—		—
Total covered		445		—		—		(217	)		(12	)		—		—		674
Total foreclosed assets	$	4,894	$	695	$	462	$	(7,608	)	$	(208	)	$	5,291		—	$	6,262

(dollars in thousands):	Balance at December 31, 2013		New NPA		Advances/ Capitalized Costs		Sales			Valuation Adjustments			Transfers from Loans		Category Changes		Balance at December 31, 2012
Noncovered:
Land & Construction	$	578		—		—	$	(1,107	)	$	(70	)	$	79		—	$	1,676
Residential real estate		1,944		—	$	480		(2,853	)		(101	)		2,676		—		1,742
Commercial real estate		3,066		—		—		(7,032	)		(430	)		7,989		—		2,539
Total noncovered		5,588		—		480		(10,992	)		(601	)		10,744		—		5,957
Covered:
Land & Construction		674		—		—		(267	)		—			229		—		712
Residential real estate		—		—		—		—			—			—		—		—
Commercial real estate		—		—		—		(1,012	)		(81	)		264		—		829
Total covered		674		—		—		(1,279	)		(81	)		493		—		1,541
Total foreclosed assets	$	6,262		—	$	480	$	(12,271	)	$	(682	)	$	11,237		—	$	7,498

Premises and Equipment

Premises and equipment were comprised of:

	December 31, 2014			December 31, 2013
	(In thousands)
Land & land improvements	$	8,933		$	5,975
Buildings		39,638			30,103
Furniture and equipment		28,446			27,881
		77,017			63,959
Less: Accumulated depreciation		(33,570	)		(32,397	)
		43,447			31,562
Construction in progress		46			50
Total premises and equipment	$	43,493		$	31,612

During the year ended December 31, 2014, premises and equipment increased $11,881,000 due to purchases of $16,841,000, that were partially offset by depreciation of $4,615,000 and disposals of premises and equipment with net book value of $345,000. Included in the $16,841,000 of purchases during the year ended December 31, 2014 is $11,936,000 related to the acquisition of North Valley Bancorp.

Intangible Assets

Intangible assets at December 31, 2014 and 2013 were comprised of the following:

	December 31,
	2014		2013
	(In thousands)
Core-deposit intangible	$	7,051	$	883
Goodwill		63,462		15,519
Total intangible assets	$	70,513	$	16,402

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The core-deposit intangible asset resulted from the Bank’s acquisition of North Valley Bancorp in 2014, Citizens in 2011, and Granite in 2010. The goodwill intangible asset includes $47,943,000 from the North Valley Bancorp acquisition in 2014, and $15,519,000 from the North State National Bank acquisition in 2003 . Amortization of core deposit intangible assets amounting to $446,000, $209,000, and $209,000 was recorded in 2014, 2013, and 2012, respectively.

Deposits

Deposits at December 31, 2014 increased $969,940,000 (40.2%) over the 2013 year-end balances to $3,380,423,000. Contributing to the $969,940,000 increase in deposits during the year ended December 31, 2014 is $801,956,000 of deposits acquired on October 3, 2014 through the acquisition of North Valley Bancorp. Excluding the deposits acquired from North Valley Bancorp, all categories of deposits were up in 2014 except time certificates. Included in the December 31, 2014 certificate of deposit balance is $5,000,000 from the State of California. The Bank participates in a deposit program offered by the State of California whereby the State may make deposits at the Bank’s request subject to collateral and creditworthiness constraints. The negotiated rates on these State deposits are generally more favorable than other wholesale funding sources available to the Bank.

Deposits at December 31, 2013 increased $120,781,000 (5.3%) over the 2012 year-end balances to $2,410,483,000. All categories of deposits were up in 2013 except time certificates. Included in the December 31, 2013 certificate of deposit balance is $5,000,000 from the State of California.

Long-Term Debt

See Note 16 to the consolidated financial statements at Item 8 of this report for information about the Company’s other borrowings, including long-term debt.

Junior Subordinated Debt

See Note 17 to the consolidated financial statements at Item 8 of this report for information about the Company’s junior subordinated debt.

Equity

See Note 19 and Note 29 in the consolidated financial statements at Item 8 of this report for a discussion of shareholders’ equity and regulatory capital, respectively. Management believes that the Company’s capital is adequate to support anticipated growth, meet the cash dividend requirements of the Company and meet the future risk-based capital requirements of the Bank and the Company.

Market Risk Management

Overview. The goal for managing the assets and liabilities of the Bank is to maximize shareholder value and earnings while maintaining a high quality balance sheet without exposing the Bank to undue interest rate risk. The Board of Directors has overall responsibility for the Company’s interest rate risk management policies. The Bank has an Asset and Liability Management Committee (ALCO) which establishes and monitors guidelines to control the sensitivity of earnings to changes in interest rates.

Asset/Liability Management. Activities involved in asset/liability management include but are not limited to lending, accepting and placing deposits, investing in securities and issuing debt. Interest rate risk is the primary market risk associated with asset/liability management. Sensitivity of earnings to interest rate changes arises when yields on assets change in a different time period or in a different amount from that of interest costs on liabilities. To mitigate interest rate risk, the structure of the balance sheet is managed with the goal that movements of interest rates on assets and liabilities are correlated and contribute to earnings even in periods of volatile interest rates. The asset/liability management policy sets limits on the acceptable amount of variance in net interest margin and market value of equity under changing interest environments. Market value of equity is the net present value of estimated cash flows from the Bank’s assets, liabilities and off-balance sheet items. The Bank uses simulation models to forecast net interest margin and market value of equity.

Simulation of net interest margin and market value of equity under various interest rate scenarios is the primary tool used to measure interest rate risk. Using computer-modeling techniques, the Bank is able to estimate the potential impact of changing interest rates on net interest margin and market value of equity. A balance sheet forecast is prepared using inputs of actual loan, securities and interest-bearing liability (i.e. deposits/borrowings) positions as the beginning base.

In the simulation of net interest income, the forecast balance sheet is processed against various interest rate scenarios. These various interest rate scenarios include a flat rate scenario, which assumes interest rates are unchanged in the future, and rate ramp scenarios including -100, +100, and +200 basis points around the flat scenario. These ramp scenarios assume that interest rates increase or decrease evenly (in a “ramp” fashion) over a twelve-month period and remain at the new levels beyond twelve months.

46

The following table summarizes the projected effect on net interest income and net income due to changing interest rates as measured against a flat rate (no interest rate change) scenario over the succeeding twelve month period. The simulation results shown below assume no changes in the structure of the Company’s balance sheet over the twelve months being measured (a “flat” balance sheet scenario), and that deposit rates will track general interest rate changes by approximately 50%:

Interest Rate Risk Simulation of Net Interest Income and Net Income as of December 31, 2014

Change in Interest	Estimated Change in Net Interest Income (NII)
Rates (Basis Points)	(as % of “flat” NII)
+200 (ramp)	(1.11%)
+100 (ramp)	(0.64%)
+ 0 (flat)	—
-100 (ramp)	(0.79%)

In the simulation of market value of equity, the forecast balance sheet is processed against various interest rate scenarios. These various interest rate scenarios include a flat rate scenario, which assumes interest rates are unchanged in the future, and rate shock scenarios including -100, +100, and +200 basis points around the flat scenario. These rate shock scenarios assume that interest rates increase or decrease immediately (in a “shock” fashion) and remain at the new level in the future.

The following table summarizes the effect on market value of equity due to changing interest rates as measured against a flat rate (no change) scenario:

Interest Rate Risk Simulation of Market Value of Equity as of December 31, 2014

Change in Interest	Estimated Change in Market Value of Equity (MVE)
Rates (Basis Points)	(as % of “flat” MVE)
+200 (shock)	(0.38%)
+100 (shock)	0.37%
+ 0 (flat)	—
-100 (shock)	(9.58%)

These results indicate that given a “flat” balance sheet scenario, and if deposit rates track general interest rate changes by approximately 50%, the Company’s balance sheet is slightly liability sensitive over a twelve month time horizon for rates up, and slightly asset sensitive over a twelve month time horizon for rates down. “Liability sensitive” implies that net interest income decreases when interest rates rise, and increase when interest rates decrease. “Asset sensitive” implies that net interest income increases when interest rates rise, and decrease when interest rates decrease. “Neutral sensitivity” implies that net interest income does not change when interest rates change. The asset liability management policy limits aggregate market risk, as measured in this fashion, to an acceptable level within the context of risk-return trade-offs.

The simulation results noted above do not incorporate any management actions that might moderate the negative consequences of interest rate deviations. In addition, the simulation results noted above contain various assumptions such as a flat balance sheet, and the rate that deposit interest rates change as general interest rates change. Therefore, they do not reflect likely actual results, but serve as estimates of interest rate risk.

As with any method of measuring interest rate risk, certain shortcomings are inherent in the method of analysis presented in the preceding tables. For example, although certain of the Company’s assets and liabilities may have similar maturities or repricing time frames, they may react in different degrees to changes in market interest rates. In addition, the interest rates on certain of the Company’s asset and liability categories may precede, or lag behind, changes in market interest rates. Also, the actual rates of prepayments on loans and investments could vary significantly from the assumptions utilized in deriving the results as presented in the preceding tables. Further, a change in U.S. Treasury rates accompanied by a change in the shape of the treasury yield curve could result in different estimations from those presented herein. Accordingly, the results in the preceding tables should not be relied upon as indicative of actual results in the event of changing market interest rates. Additionally, the resulting estimates of changes in market value of equity are not intended to represent, and should not be construed to represent, estimates of changes in the underlying value of the Company.

Interest rate sensitivity is a function of the repricing characteristics of the Company’s portfolio of assets and liabilities. One aspect of these repricing characteristics is the time frame within which the interest-bearing assets and liabilities are subject to change in interest rates either at replacement, repricing or maturity. An analysis of the repricing time frames of interest-bearing assets and liabilities is sometimes called a “gap” analysis because it shows the gap between assets and liabilities repricing or maturing in each of a number of periods. Another aspect of these repricing characteristics is the relative

47

magnitude of the repricing for each category of interest earning asset and interest-bearing liability given various changes in market interest rates. Gap analysis gives no indication of the relative magnitude of repricing given various changes in interest rates. Interest rate sensitivity management focuses on the maturity of assets and liabilities and their repricing during periods of changes in market interest rates. Interest rate sensitivity gaps are measured as the difference between the volumes of assets and liabilities in the Company’s current portfolio that are subject to repricing at various time horizons.

The following interest rate sensitivity table shows the Company’s repricing gaps as of December 31, 2014. In this table transaction deposits, which may be repriced at will by the Company, have been included in the less than 3-month category. The inclusion of all of the transaction deposits in the less than 3-month repricing category causes the Company to appear liability sensitive. Because the Company may reprice its transaction deposits at will, transaction deposits may or may not reprice immediately with changes in interest rates.

Due to the limitations of gap analysis, as described above, the Company does not actively use gap analysis in managing interest rate risk. Instead, the Company relies on the more sophisticated interest rate risk simulation model described above as its primary tool in measuring and managing interest rate risk.

Interest Rate Sensitivity – December 31, 2014 (dollars in thousands)	Repricing within:
	Less than 3 months			3 - 6 months			6 - 12 months			1 - 5 years			Over 5 years
Interest-earning assets:
Cash at Federal Reserve and other banks	$	517,578			—			—			—			—
Securities		25,530		$	27,036		$	52,398		$	326,087		$	328,580
Loans		558,341			118,973			207,847			1,154,392			242,970
Total interest-earning assets		1,101,449			146,009			260,245			1,480,479		$	571,550
Interest-bearing liabilities
Transaction deposits		1,938,511			—			—			—			—
Time		119,271			75,800			87,606			75,335			—
Other borrowings		9,276			—			—			—			—
Junior subordinated debt		56,272			—			—			—			—
Total interest-bearing liabilities	$	2,123,330		$	75,800		$	87,606		$	75,335			—
Interest sensitivity gap	$	(1,021,881	)	$	70,209		$	172,639		$	1,405,144		$	571,550
Cumulative sensitivity gap	$	(1,021,881	)	$	(951,672	)	$	(779,033	)	$	626,111		$	1,197,661
As a percentage of earning assets:
Interest sensitivity gap		(28.7	%)		2.0	%		4.8	%		39.5	%		16.0	%
Cumulative sensitivity gap		(28.7	%)		(26.7	%)		(21.9	%)		17.6	%		33.6	%

Liquidity

Liquidity refers to the Company’s ability to provide funds at an acceptable cost to meet loan demand and deposit withdrawals, as well as contingency plans to meet unanticipated funding needs or loss of funding sources. These objectives can be met from either the asset or liability side of the balance sheet. Asset liquidity sources consist of the repayments and maturities of loans, selling of loans, short-term money market investments, maturities of securities and sales of securities from the available-for-sale portfolio. These activities are generally summarized as investing activities in the Consolidated Statement of Cash Flows. Net cash used by investing activities totaled $178,724,000 in 2014. Net increases in investment and loan balances used $210,789,000 and $114,095,000 of cash, respectively. The Company acquired $141,405,000 of cash through the acquisition of North Valley Bancorp on October 3, 2014, and this is classified as an investing source of cash.

Liquidity may also be generated from liabilities through deposit growth and borrowings. These activities are included under financing activities in the Consolidated Statement of Cash Flows. In 2014, financing activities provide funds totaling $163,667,000 due to a $167,984,000 increase in deposit balances, excluding $801,956,000 of deposits from the North Valley Bancorp acquisition. Dividends paid used $7,807,000 of cash during 2014. The Bank also had available correspondent banking lines of credit totaling $15,000,000 at December 31, 2014. In addition, at December 31, 2014, the Company had loans and securities available to pledge towards future borrowings from the Federal Home Loan Bank and the Federal Reserve Bank of up to $865,466,000 and $138,545,000, respectively. As of December 31, 2014, the Company had $9,276,000 of other borrowings as described in Note 16 of the consolidated financial statements of the Company and the related notes at Item 8 of this report. While these sources are expected to continue to provide significant amounts of funds in the future, their mix, as well as the possible use of other sources, will depend on future economic and market conditions. Liquidity is also provided or used through the results of operating activities. In 2014, operating activities provided cash of $27,417,000.

The Company’s investment securities available for sale plus cash and cash equivalents in excess of reserve requirements totaled $636,317,000 at December 31, 2014, which was 16.2% of total assets at that time. This was down from $664,656,000 and 24.2% at the end of 2013.

48

Loan demand during 2015 will be dictated by economic and competitive conditions. The Company aggressively solicits non-interest bearing demand deposits and money market checking deposits, which are the least sensitive to interest rates. The growth of deposit balances is subject to heightened competition, the success of the Company’s sales efforts, delivery of superior customer service and market conditions. The reduction in the federal funds rate and various Federal Reserve interest rate manipulation efforts have resulted in historic low short-term and long-term interest rates, which could impact deposit volumes in the future. Depending on economic conditions, interest rate levels, and a variety of other conditions, deposit growth may be used to fund loans, to reduce short-term borrowings or purchase investment securities. However, due to concerns such as uncertainty in the general economic environment, competition and political uncertainty, loan demand and levels of customer deposits are not certain.

The principal cash requirements of the Company are dividends on common stock when declared. The Company is dependent upon the payment of cash dividends by the Bank to service its commitments. Shareholder dividends are expected to continue subject to the Board’s discretion and continuing evaluation of capital levels, earnings, asset quality and other factors. The Company expects that the cash dividends paid by the Bank to the Company will be sufficient to meet this payment schedule. Dividends from the Bank are subject to certain regulatory restrictions.

The maturity distribution of certificates of deposit in denominations of $100,000 or more is set forth in the following table. These deposits are generally more rate sensitive than other deposits and, therefore, are more likely to be withdrawn to obtain higher yields elsewhere if available. The Bank participates in a program wherein the State of California places time deposits with the Bank at the Bank’s option. At December 31, 2014, 2013 and 2012, the Bank had $5,000,000, $5,000,000 and $5,000,000, respectively, of these State deposits.

Certificates of Deposit in Denominations of $100,000 or More

	Amounts as of December 31,
(dollars in thousands)	2014		2013		2012
Time remaining until maturity:
Less than 3 months	$	66,199	$	61,205	$	73,180
3 months to 6 months		36,166		39,580		32,384
6 months to 12 months		41,787		16,772		34,311
More than 12 months		36,488		40,090		40,320
Total	$	180,640	$	157,647	$	180,195

Loan demand also affects the Company’s liquidity position. The following table presents the maturities of loans, net of deferred loan costs, at December 31, 2014:

	Within One Year		After One But Within 5 Years		After 5 Years		Total
	(dollars in thousands)
Loans with predetermined interest rates:
Real estate mortgage	$	45,864	$	142,106	$	763,681	$	951,651
Consumer		4,834		34,862		217,511		257,207
Commercial		35,136		38,142		18,433		91,711
Real estate construction		17,394		22,674		4,693		44,761
		103,228		237,784		1,004,318		1,345,330
Loans with floating interest rates:
Real estate mortgage		28,618		109,346		525,744		663,708
Consumer		2,155		19,103		138,619		159,877
Commercial		35,665		33,121		14,448		83,234
Real estate construction		5,717		4,367		20,291		30,375
		72,155		165,937		699,102		937,194
Total loans	$	175,383	$	403,721	$	1,703,420	$	2,282,524

49

The maturity distribution and yields of the investment portfolio at December 31, 2014 is presented in the following table. The timing of the maturities indicated in the table below is based on final contractual maturities. Most mortgage-backed securities return principal throughout their contractual lives. As such, the weighted average life of mortgage-backed securities based on outstanding principal balance is usually significantly shorter than the final contractual maturity indicated below. Yields on tax exempt securities are shown on a tax equivalent basis.

	Within One Year				After One Year but Through Five Years				After Five Years but Through Ten Years				After Ten Years				Total
	AmountYield				AmountYield				AmountYield				AmountYield				AmountYield
	(dollars in thousands)
Securities Available for Sale
Obligations of US government corporations and agencies	$	34	2.97	%	$	812	4.61	%	$	29,464	2.98	%	$	44,810	3.70	%	$	75,120	3.42	%
Obligations of states and political subdivisions		—	—			322	6.32	%		2,853	6.97	%		—	—			3,175	6.90	%
Corporate bonds		1,908	1.78	%		—	—			—	—			—	—			1,908	1.78	%
Marketable equity securities		—	—			—	—			—	—			3,002	—			3,002	—
Total securities available for sale	$	1,942	1.80	%	$	1,134	5.11	%	$	32,317	3.34	%	$	47,812	3.46	%	$	83,205	3.39	%

	Within One Year			After One Year but Through Five Years			After Five Years but Through Ten Years				After Ten Years				Total
	AmountYield			AmountYield			AmountYield				AmountYield				AmountYield
	(dollars in thousands)
Securities Held to Maturity
Obligations of US government corporations and agencies		—	—		—	—		—	—		$	660,836	2.71	%	$	660,836	2.71	%
Obligations of states and political subdivisions		—	—		—	—	$	1,118	4.13	%		14,472	4.38	%		15,590	4.36	%
Total securities held to maturity		—	—		—	—	$	1,118	4.13	%	$	675,308	2.74	%	$	676,426	2.75	%

Off-Balance Sheet Items

The Bank has certain ongoing commitments under operating and capital leases. See Note 18 of the financial statements at Item 8 of this report for the terms. These commitments do not significantly impact operating results. As of December 31, 2014 commitments to extend credit and commitments related to the Bank’s deposit overdraft privilege product were the Bank’s only financial instruments with off-balance sheet risk. The Bank has not entered into any material contracts for financial derivative instruments such as futures, swaps, options, etc. Commitments to extend credit were $673,706,000 and $557,987,000 at December 31, 2014and 2013, respectively, and represent 29.5% of the total loans outstanding at year-end 2014 versus 33.4% at December 31, 2013. Commitments related to the Bank’s deposit overdraft privilege product totaled $101,060,000 and $68,932,000 at December 31, 2014 and 2013, respectively.

50

Certain Contractual Obligations

The following chart summarizes certain contractual obligations of the Company as of December 31, 2014:

(dollars in thousands)	Total		Less than one year		1-3 years		3-5 years		More than 5 years
Time deposits	$	358,012	$	282,629	$	63,623	$	11,757	$	3
Other collateralized borrowings, fixed rate of 0.05% payable on January 2, 2015		9,276		9,276		—		—		—
Junior subordinated:
TriCo Trust I(1)		20,619		—		—		—		20,619
TriCo Trust II(2)		20,619		—		—		—		20,619
North Valley Trust II(3)		6,186		—		—		—		6,186
North Valley Trust III(4)		5,155		—		—		—		5,155
North Valley Trust IV(5)		10,310		—		—		—		10,310
Operating lease obligations		11,147		3,419		4,366		2,182		1,180
Deferred compensation(6)		6,990		1,240		1,917		1,600		2,233
Supplemental retirement plans(6)		8,750		1,145		2,037		1,849		3,719
Total contractual obligations	$	457,064	$	297,709	$	71,943	$	17,388	$	70,024

(1) Junior subordinated debt, adjustable rate of three-month LIBOR plus 3.05%, callable in whole or in part by the Company on a quarterly basis beginning October 7, 2008, matures October 7, 2033.

(2) Junior subordinated debt, adjustable rate of three-month LIBOR plus 2.55%, callable in whole or in part by the Company on a quarterly basis beginning July 23, 2009, matures July 23, 2034.

(3) Junior subordinated debt, adjustable rate of three-month LIBOR plus 3.25%, callable in whole or in part by the Company on a quarterly basis beginning April 24, 2008, matures April 24, 2033.

(4) Junior subordinated debt, adjustable rate of three-month LIBOR plus 2.80%, callable in whole or in part by the Company on a quarterly basis beginning July 23, 2009, matures July 23, 2034.

(5) Junior subordinated debt, adjustable rate of three-month LIBOR plus 1.33%, callable in whole or in part by the Company on a quarterly basis beginning March 15, 2011, matures March 15, 2036.

(6) These amounts represent known certain payments to participants under the Company’s deferred compensation and supplemental retirement plans. See Note 25 in the financial statements at Item 8 of this report for additional information related to the Company’s deferred compensation and supplemental retirement plan liabilities.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

See “Market Risk Management” under Item 7 of this report which is incorporated herein.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

INDEX TO FINANCIAL STATEMENTS

	Page
Consolidated Balance Sheets as of December 31, 2014 and 2013		52
Consolidated Statements of Income for the years ended December 31, 2014, 2013, and 2012		53
Consolidated Statements of Comprehensive Income for the years ended December 31, 2014, 2013, and 2012		54
Consolidated Statements of Changes in Shareholders’ Equity for the years ended December  31, 2014, 2013, and 2012		54
Consolidated Statements of Cash Flows for the years ended December 31, 2014, 2013, and 2012		55
Notes to Consolidated Financial Statements		56
Management’s Report on Internal Control over Financial Reporting		101
Reports of Independent Registered Public Accounting Firm		102

51

TRICO BANCSHARES

CONSOLIDATED BALANCE SHEETS

	At December 31,
	2014			2013
	(in thousands, except share data)
Assets:
Cash and due from banks	$	93,150		$	76,915
Cash at Federal Reserve and other banks		517,578			521,453
Cash and cash equivalents		610,728			598,368
Investment securities:
Available for sale		83,205			104,647
Held to maturity		676,426			240,504
Restricted equity securities		16,956			9,163
Loans held for sale		3,579			2,270
Loans		2,282,524			1,672,007
Allowance for loan losses		(36,585	)		(38,245	)
Total loans, net		2,245,939			1,633,762
Foreclosed assets, net		4,894			6,262
Premises and equipment, net		43,493			31,612
Cash value of life insurance		92,337			52,309
Accrued interest receivable		9,275			6,516
Goodwill		63,462			15,519
Other intangible assets, net		7,051			883
Mortgage servicing rights		7,378			6,165
Other assets		51,735			36,086
Total assets	$	3,916,458		$	2,744,066
Liabilities and Shareholders’ Equity:
Liabilities:
Deposits:
Noninterest-bearing demand	$	1,083,900		$	789,458
Interest-bearing		2,296,523			1,621,025
Total deposits		3,380,423			2,410,483
Accrued interest payable		978			938
Reserve for unfunded commitments		2,145			2,415
Other liabilities		49,192			31,711
Other borrowings		9,276			6,335
Junior subordinated debt		56,272			41,238
Total liabilities		3,498,286			2,493,120
Commitments and contingencies (Note 18)
Shareholders’ equity:
Common stock, no par value: 50,000,000 shares authorized; issued and outstanding:
22,714,964 at December 31, 2014		244,318
16,076,662 at December 31, 2013					89,356
Retained earnings		176,057			159,733
Accumulated other comprehensive income, net of tax		(2,203	)		1,857
Total shareholders’ equity		418,172			250,946
Total liabilities and shareholders’ equity	$	3,916,458		$	2,744,066

The accompanying notes are an integral part of these consolidated financial statements.

52

TRICO BANCSHARES

CONSOLIDATED STATEMENTS OF INCOME

	Years ended December 31,
	2014			2013			2012
	(in thousands, except per share data)
Interest and dividend income:
Loans, including fees	$	103,887		$	97,548		$	100,496
Debt securities:
Taxable		14,753			6,349			6,072
Tax exempt		505			583			428
Dividends		837			387			105
Interest bearing cash at
Federal Reserve and other banks		1,133			1,693			1,615
Total interest and dividend income		121,115			106,560			108,716
Interest expense:
Deposits		3,274			3,445			4,416
Other borrowings		4			4			1,604
Junior subordinated debt		1,403			1,247			1,324
Total interest expense		4,681			4,696			7,344
Net interest income		116,434			101,864			101,372
(Benefit from) provision for loan losses		(4,045	)		(715	)		9,423
Net interest income after provision for loan losses		120,479			102,579			91,949
Noninterest income:
Service charges and fees		24,236			25,257			23,925
Gain on sale of loans		2,032			5,602			6,810
Commissions on sale of non-deposit investment products		2,995			2,983			3,209
Increase in cash value of life insurance		1,953			1,727			1,820
Other		3,300			1,260			2,216
Total noninterest income		34,516			36,829			37,980
Noninterest expense:
Salaries and related benefits		57,544			51,936			49,952
Other		52,835			41,668			48,046
Total noninterest expense		110,379			93,604			97,998
Income before income taxes		44,616			45,804			31,931
Provision for income taxes		18,508			18,405			12,937
Net income	$	26,108		$	27,399		$	18,994
Earnings per share:
Basic	$	1.47		$	1.71		$	1.19
Diluted	$	1.46		$	1.69		$	1.18

The accompanying notes are an integral part of these consolidated financial statements.

53

TRICO BANCSHARES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

	Years ended December 31,
	2014			2013			2012
	(in thousands, except per share data)
Net income	$	26,108		$	27,399		$	18,994
Other comprehensive (loss) income, net of tax:
Unrealized holding (losses) gains on securities arising during the period		(94	)		(2,452	)		(1,216	)
Change in minimum pension liability		(4,114	)		1,750			(2	)
Change in joint beneficiary agreement liability		148			400			(434	)
Other comprehensive (loss) income		(4,060	)		(302	)		(1,652	)
Comprehensive income	$	22,048		$	27,097		$	17,342

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

TRICO BANCSHARES

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY

Years Ended December 31, 2014, 2013 and 2012

	Shares of Common Stock			Common Stock			Retained Earnings			Accumulated Other Comprehensive Income			Total
	(in thousands, except share data)
Balance at December 31, 2011		15,978,958		$	84,079		$	128,551		$	3,811		$	216,441
Net income								18,994						18,994
Other comprehensive loss											(1,652	)		(1,652	)
Stock option vesting					1,083									1,083
Stock options exercised		36,000			430									430
Tax benefit of stock options exercised					44									44
Repurchase of common stock		(14,120	)		(75	)		(149	)					(224	)
Dividends paid ($ 0.36 per share)								(5,757	)					(5,757	)
Balance at December 31, 2012		16,000,838		$	85,561		$	141,639		$	2,159		$	229,359
Net income								27,399						27,399
Other comprehensive loss											(302	)		(302	)
Stock option vesting					1,151									1,151
Stock options forfeited					(22	)								(22	)
Stock options exercised		248,765			3,240									3,240
Tax benefit of stock options exercised					356									356
Repurchase of common stock		(172,941	)		(930	)		(2,560	)					(3,490	)
Dividends paid ($ 0.42 per share)								(6,745	)					(6,745	)
Balance at December 31, 2013		16,076,662		$	89,356		$	159,733		$	1,857		$	250,946
Net income								26,108						26,108
Other comprehensive loss											(4,060	)		(4,060	)
Stock option vesting					965									965
RSU vesting					126									126
PSU vesting					42									42
Stock options exercised		166,020			2,875									2,875
Tax benefit of stock options exercised					225									225
Issuance of common stock		6,575,550			151,303									151,303
Repurchase of common stock		(103,268	)		(574	)		(1,977	)					(2,551	)
Dividends paid ($ 0.44 per share)								(7,807	)					(7,807	)
Balance at December 31, 2014		22,714,964		$	244,318		$	176,057		$	(2,203	)	$	418,172

The accompanying notes are an integral part of these consolidated financial statements.

54

TRICO BANCSHARES

CONSOLIDATED STATEMENTS OF CASH FLOWS

	Years Ended December 31,
	2014			2013			2012
	(in thousands)
Operating activities:
Net income	$	26,108		$	27,399		$	18,994
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of premises and equipment, and amortization		5,735			4,623			4,292
Amortization of intangible assets		446			209			209
(Benefit from) provision for loan losses		(4,045	)		(715	)		9,423
Amortization of investment securities premium, net		970			752			1,151
Originations of loans for resale		(49,241	)		(123,834	)		(225,602	)
Proceeds from sale of loans originated for resale		49,394			137,859			238,352
Gain on sale of loans		(2,032	)		(5,602	)		(6,810	)
Change in market value of mortgage servicing rights		1,301			(253	)		2,016
Provision for losses on foreclosed assets		208			682			1,728
Gain on sale of foreclosed assets		(2,153	)		(1,640	)		(786	)
Loss on disposal of fixed assets		(49	)		39			420
Increase in cash value of life insurance		(1,953	)		(1,727	)		(1,820	)
Gain on life insurance death benefit		—			—			(675	)
Equity compensation vesting expense		1,133			1,151			1,083
Stock option excess tax benefits		(225	)		(356	)		(44	)
Deferred income tax expense (benefit)		(993	)		2,526			(383	)
Change in:
Reserve for unfunded commitments		(395	)		(1,200	)		875
Interest receivable		(619	)		120			676
Interest payable		(67	)		(98	)		(638	)
Other assets and liabilities, net		3,894			1,151			9,602
Net cash from operating activities		27,417			41,086			52,063
Investing activities:
Proceeds from maturities of securities available for sale		24,016			53,468			76,764
Proceeds from sale of securities available for sale		14,130			—			—
Purchases of securities available for sale		—			—			(13,815	)
Proceeds from maturities of securities held to maturity		34,172			4,391			—
Purchases of securities held to maturity		(280,692	)		(244,967	)		—
(Purchase) redemption of restricted equity securities, net		(2,415	)		484			963
Loan origination and principal collections, net		(82,079	)		(59,411	)		(44,601	)
Loans purchased		(32,017	)		(62,698	)		—
Proceeds from sale of premises and equipment		121			12			30
Improvement of foreclosed assets		(462	)		(479	)		(983	)
Proceeds from sale of other real estate owned		9,762			13,910			17,257
Purchases of premises and equipment		(4,665	)		(8,313	)		(10,792	)
Life insurance proceeds		—			706			4,423
Cash received from acquisition, net		141,405			—			—
Net cash (used) provided by investing activities		(178,724	)		(302,897	)		29,246
Financing activities:
Net increase (decrease) in deposits		167,984			120,781			99,166
Net change in other borrowings		2,941			(2,862	)		(63,344	)
Stock option excess tax benefits		225			356			44
Repurchase of common stock		(292	)		(501	)		—
Dividends paid		(7,807	)		(6,745	)		(5,757	)
Exercise of stock options		616			251			206
Net cash from financing activities		163,667			111,280			30,315
Net change in cash and cash equivalents		12,360			(150,531	)		111,624
Cash and cash equivalents and beginning of year		598,368			748,899			637,275
Cash and cash equivalents at end of year	$	610,728		$	598,368		$	748,899
Supplemental disclosure of noncash activities:
Unrealized (loss) gain on securities available for sale	$	(162	)	$	(4,232	)	$	(2,096	)
Loans transferred to foreclosed assets		5,291			11,717			8,382
Loans transferred to held-for-sale		—			—			9,739
Market value of shares tendered in-lieu of cash to pay for exercise of options and/or related taxes		2,259			2,989			224
Supplemental disclosure of cash flow activity:
Cash paid for interest expense		4,641			4,794			7,982
Cash paid for income taxes		22,685		$	17,395		$	10,995
Assets acquired in acquisition		978,682			—			—
Liabilities assumed in acquisition		827,372			—			—

The accompanying notes are an integral part of these consolidated financial statements.

55

TRICO BANCSHARES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Years Ended December 31, 2014, 2013 and 2012

Note 1 – Summary of Significant Accounting Policies

Description of Business and Basis of Presentation

TriCo Bancshares (the “Company”) is a California corporation organized to act as a bank holding company for Tri Counties Bank (the “Bank”). The Company and the Bank are headquartered in Chico, California. The Bank is a California-chartered bank that is engaged in the general commercial banking business in 26 California counties. Tri Counties Bank currently operates from 57 traditional branches and 16 in-store branches. The Company has five capital subsidiary business trusts (collectively, the Capital Trusts) that issued trust preferred securities, including two organized by TriCo and three acquired with the acquisition of North Valley Bancorp. See Note 17 – Junior Subordinated Debt.

The consolidated financial statements are prepared in accordance with accounting policies generally accepted in the United States of America and general practices in the banking industry. The financial statements include the accounts of the Company. All inter-company accounts and transactions have been eliminated in consolidation. For financial reporting purposes, the Company’s investments in the Capital Trusts of $1,690,000 are accounted for under the equity method and, accordingly, are not consolidated and are included in other assets on the consolidated balance sheet. The subordinated debentures issued and guaranteed by the Company and held by the Capital Trusts are reflected as debt on the Company’s consolidated balance sheet.

Use of Estimates in the Preparation of Financial Statements

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires Management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. On an on-going basis, the Company evaluates its estimates, including those related to the adequacy of the allowance for loan losses, investments, intangible assets, income taxes and contingencies. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions. The allowance for loan losses, indemnification asset, foreclosed assets, goodwill and other intangible assets, income taxes, fair value of assets acquired and liabilities assumed in business combinations, the valuation of securities available-for-sale, and the valuation of mortgage servicing rights are the only accounting estimates that materially affect the Company’s consolidated financial statements.

As described in Note 2, the Company acquired North Valley Bancorp on October 3, 2014. The acquired assets and assumed liabilities were measured at estimated fair value values under the acquisition method of accounting. The Company made significant estimates and exercised significant judgment in accounting for the acquisition. The Company determined loan fair values based on loan file reviews, loan risk ratings, appraised collateral values, expected cash flows and historical loss factors. Foreclosed assets were primarily valued based on appraised values of the repossessed loan collateral. Land and building were valued based on appraised values. An identifiable intangible was also recorded representing the fair value of the core deposit customer base based on an evaluation of the cost of such deposits relative to alternative funding sources. The fair value of time deposits and borrowings were determined based on the present value of estimated future cash flows using current rates as of the acquisition date.

Significant Group Concentration of Credit Risk

The Company grants agribusiness, commercial, consumer, and residential loans to customers located throughout the northern San Joaquin Valley, the Sacramento Valley and northern mountain regions of California. The Company has a diversified loan portfolio within the business segments located in this geographical area. The Company currently classifies all its operation into one business segment that it denotes as community banking.

Cash and Cash Equivalents

For purposes of the consolidated statements of cash flows, cash and cash equivalents include cash on hand, amounts due from banks, and federal funds sold. Net cash flows are reported for loan and deposit transactions and other borrowings.

Investment Securities

The Company classifies its debt and marketable equity securities into one of three categories: trading, available for sale or held to maturity. Trading securities are bought and held principally for the purpose of selling in the near term. Held to maturity securities are those securities which the Company has the ability and intent to hold until maturity. These securities are carried at cost adjusted for amortization of premium and accretion of discount, computed by the effective interest method over their contractual lives. All other securities not included in trading or held to maturity are classified as available for sale. Available for sale securities are recorded at fair value. Unrealized gains and losses, net of the related tax effect, on available for sale securities are reported as a separate component of other accumulated comprehensive income in shareholders’ equity until realized. Premiums and discounts are amortized or accreted over the life of the related investment security as an adjustment to yield using the effective interest method. Dividend and interest income are recognized when earned. Realized gains and losses are derived from the amortized cost of the security sold. During the years ended December 31, 2014 and 2013, the Company did not have any securities classified as trading.

The Company assesses other-than-temporary impairment (“OTTI”) based on whether it intends to sell a security or if it is likely that the Company would be required to sell the security before recovery of the amortized cost basis of the investment, which may be maturity. For

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debt securities, if we intend to sell the security or it is likely that we will be required to sell the security before recovering its cost basis, the entire impairment loss would be recognized in earnings as an OTTI. If we do not intend to sell the security and it is not likely that we will be required to sell the security but we do not expect to recover the entire amortized cost basis of the security, only the portion of the impairment loss representing credit losses would be recognized in earnings. The credit loss on a security is measured as the difference between the amortized cost basis and the present value of the cash flows expected to be collected. Projected cash flows are discounted by the original or current effective interest rate depending on the nature of the security being measured for potential OTTI. The remaining impairment related to all other factors, the difference between the present value of the cash flows expected to be collected and fair value, is recognized as a charge to other comprehensive income (“OCI”). Impairment losses related to all other factors are presented as separate categories within OCI. The accretion of the amount recorded in OCI increases the carrying value of the investment and does not affect earnings. If there is an indication of additional credit losses the security is re-evaluated according to the procedures described above. No OTTI losses were recognized during the years ended December 31, 2014 and 2013.

Restricted Equity Securities

Restricted equity securities represent the Company’s investment in the stock of the Federal Home Loan Bank of San Francisco (“FHLB”) and are carried at par value, which reasonably approximates its fair value. While technically these are considered equity securities, there is no market for the FHLB stock. Therefore, the shares are considered as restricted investment securities. Management periodically evaluates FHLB stock for other-than-temporary impairment. Management’s determination of whether these investments are impaired is based on its assessment of the ultimate recoverability of cost rather than by recognizing temporary declines in value. The determination of whether a decline affects the ultimate recoverability of cost is influenced by criteria such as (1) the significance of any decline in net assets of the FHLB as compared to the capital stock amount for the FHLB and the length of time this situation has persisted, (2) commitments by the FHLB to make payments required by law or regulation and the level of such payments in relation to the operating performance of the FHLB, (3) the impact of legislative and regulatory changes on institutions and, accordingly, the customer base of the FHLB, and (4) the liquidity position of the FHLB.

As a member of the FHLB system, the Company is required to maintain a minimum level of investment in FHLB stock based on specific percentages of its outstanding mortgages, total assets, or FHLB advances. The Company may request redemption at par value of any stock in excess of the minimum required investment. Stock redemptions are at the discretion of the FHLB.

Loans Held for Sale

Loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or fair value, as determined by aggregate outstanding commitments from investors of current investor yield requirements. Net unrealized losses are recognized through a valuation allowance by charges to noninterest income.

Mortgage loans held for sale are generally sold with the mortgage servicing rights retained by the Company. Gains or losses on the sale of loans that are held for sale are recognized at the time of the sale and determined by the difference between net sale proceeds and the net book value of the loans less the estimated fair value of any retained mortgage servicing rights.

Loans and Allowance for Loan Losses

Loans originated by the Company, i.e., not purchased or acquired in a business combination, are referred to as originated loans. Originated loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at the principal amount outstanding, net of deferred loan fees and costs. Loan origination and commitment fees and certain direct loan origination costs are deferred, and the net amount is amortized as an adjustment of the related loan’s yield over the actual life of the loan. Originated loans on which the accrual of interest has been discontinued are designated as nonaccrual loans.

Originated loans are placed in nonaccrual status when reasonable doubt exists as to the full, timely collection of interest or principal, or a loan becomes contractually past due by 90 days or more with respect to interest or principal and is not well secured and in the process of collection. When an originated loan is placed on nonaccrual status, all interest previously accrued but not collected is reversed. Income on such loans is then recognized only to the extent that cash is received and where the future collection of principal is probable. Interest accruals are resumed on such loans only when they are brought fully current with respect to interest and principal and when, in the judgment of Management, the loan is estimated to be fully collectible as to both principal and interest.

An allowance for loan losses for originated loans is established through a provision for loan losses charged to expense. The allowance is maintained at a level which, in Management’s judgment, is adequate to absorb probable incurred credit losses inherent in the loan portfolio as of the balance sheet date. Originated loans and deposit related overdrafts are charged against the allowance for loan losses when Management believes that the collectability of the principal is unlikely or, with respect to consumer installment loans, according to an established delinquency schedule. The allowance is an amount that Management believes will be adequate to absorb probable incurred losses inherent in existing loans and leases, based on evaluations of the collectability, impairment and prior loss experience of loans and leases. The evaluations take into consideration such factors as changes in the nature and size of the portfolio, overall portfolio quality, loan concentrations, specific problem loans, and current economic conditions that may affect the borrower’s ability to pay. The Company defines an originated loan as impaired when it is probable the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement. Impaired originated loans are measured based on the present value of expected future cash flows discounted at the loan’s original effective interest rate. As a practical expedient, impairment may be measured based on the loan’s observable market price or the fair value of the collateral if the loan is collateral dependent. When the measure of the impaired loan is less than the recorded investment in the loan, the impairment is recorded through a valuation allowance.

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In situations related to originated loans where, for economic or legal reasons related to a borrower’s financial difficulties, the Company grants a concession for other than an insignificant period of time to the borrower that the Company would not otherwise consider, the related loan is classified as a troubled debt restructuring (TDR). The Company strives to identify borrowers in financial difficulty early and work with them to modify to more affordable terms before their loan reaches nonaccrual status. These modified terms may include rate reductions, principal forgiveness, payment forbearance and other actions intended to minimize the economic loss and to avoid foreclosure or repossession of the collateral. In cases where the Company grants the borrower new terms that result in the loan being classified as a TDR, the Company measures any impairment on the restructuring as noted above for impaired loans. TDR loans are classified as impaired until they are fully paid off or charged off. Loans that are in nonaccrual status at the time they become TDR loans, remain in nonaccrual status until the borrower demonstrates a sustained period of performance which the Company generally believes to be six consecutive months of payments, or equivalent. Otherwise, TDR loans are subject to the same nonaccrual and charge-off policies as noted above with respect to their restructured principal balance.

Credit risk is inherent in the business of lending. As a result, the Company maintains an allowance for loan losses to absorb probable incurred losses inherent in the Company’s originated loan portfolio. This is maintained through periodic charges to earnings. These charges are included in the Consolidated Statements of Income as provision for loan losses. All specifically identifiable and quantifiable losses are immediately charged off against the allowance. However, for a variety of reasons, not all losses are immediately known to the Company and, of those that are known, the full extent of the loss may not be quantifiable at that point in time. The balance of the Company’s allowance for originated loan losses is meant to be an estimate of these unknown but probable losses inherent in the portfolio.

The Company formally assesses the adequacy of the allowance for originated loan losses on a quarterly basis. Determination of the adequacy is based on ongoing assessments of the probable risk in the outstanding originated loan portfolio, and to a lesser extent the Company’s originated loan commitments. These assessments include the periodic re-grading of credits based on changes in their individual credit characteristics including delinquency, seasoning, recent financial performance of the borrower, economic factors, changes in the interest rate environment, growth of the portfolio as a whole or by segment, and other factors as warranted. Loans are initially graded when originated. They are re-graded as they are renewed, when there is a new loan to the same borrower, when identified facts demonstrate heightened risk of nonpayment, or if they become delinquent. Re-grading of larger problem loans occurs at least quarterly. Confirmation of the quality of the grading process is obtained by independent credit reviews conducted by consultants specifically hired for this purpose and by various bank regulatory agencies.

The Company’s method for assessing the appropriateness of the allowance for originated loan losses includes specific allowances for impaired originated loans and leases, formula allowance factors for pools of credits, and allowances for changing environmental factors (e.g., interest rates, growth, economic conditions, etc.). Allowance factors for loan pools were based on historical loss experience by product type and prior risk rating.

During the three months ended March 31, 2013, the Company changed the method it uses to estimate net sale proceeds from real estate collateral sales when calculating the allowance for loan losses associated with impaired real estate collateral dependent loans. Previously, the Company used the greater of fifteen percent or actual estimated selling costs. Currently, the Company uses the actual estimated selling costs, and an adjustment to appraised value based on the age of the appraisal. These changes are intended to more accurately reflect the estimated net sale proceeds from the sale of impaired collateral dependent real estate loans. This change in methodology resulted in the allowance for loan losses as of March 31, 2013 being $494,000 more than it would have been without this change in methodology.

During the three months ended June 30, 2013, the Company modified its loss migration analysis methodology used to determine the formula allowance factors. When the Company originally established its loss migration analysis methodology during the quarter ended March 31, 2012, it reviewed the loss experience of each rolling twelve month period over the previous three years in order to calculate an annualized loss rate by loan category and risk rating. The use of three years of loss experience data was originally used because that was the extent of the detailed loss data by loan category and risk rating that was available at the time. This three year historical look-back period was used through the quarter ended March 31, 2013. Starting with the quarter ended June 30, 2013, the Company reviews all available detailed loss experience data, going back to, and including, the twelve month period ended June 30, 2009, and does not limit the look-back period to the most recent three years of historical loss data. Using this data, the Company calculates loss factors for each quarter from the quarter ended June 30, 2009 to the most recent quarter. The Company then calculates a weighted average formula allowance factor for each loan category and risk rating with the most recent quarterly loss factor being weighted 125%, the quarter ended June 30, 2009 loss factor being weighted 75%, and the loss factors for all the quarters between the most recent quarter and the quarter ended June 30, 2009, being weighted on a linear scale from 75% to 125%. This change is intended to more accurately reflect the risk inherent in the loan portfolio by considering historical loss data for all years as the data for new periods becomes available. This change in methodology resulted in the allowance for loan losses as of June 30, 2013 being $1,314,000 more than it would have been without this change in methodology.

During the three months ended September 30, 2013, the Company modified its methodology used to determine the allowance for changing environmental factors. Previously, the Company compared the current value of each environmental factor to a fixed baseline value. The deviation of the current value from the baseline value was then multiplied by a conversion factor to determine the required allowance related to each environmental factor. As of September 30, 2013, the Company replaced the fixed baseline values with average baseline values derived from historical averages, and adjusted the conversion factors. This change is intended to more accurately reflect the risk inherent in the portfolio by recognizing that baseline, or normal, levels for environmental factors may change over time. This change in methodology resulted in the allowance for loan losses as of September 30, 2013 being $1,665,000 more than it would have been without this change in methodology.

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During the three months ended March 31, 2014, the Company modified its methodology used to determine the allowance for changing environmental factors by adding a new environmental factor based on the California Home Affordability Index (“CHAI”). The CHAI measures the percentage of households in California that can afford to purchase the median priced home in California based on current home prices and mortgage interest rates. The use of the CHAI environmental factor consists of comparing the current CHAI to its historical baseline, and allows management to consider the adverse impact that a lower than historical CHAI may have on general economic activity and the performance of our borrowers. Based on an analysis of historical data, management believes this environmental factor gives a better estimate of current economic activity compared to other environmental factors that may lag current economic activity to some extent. This change in methodology resulted in no change to the allowance for loan losses as of March 31, 2014 compared to what it would have been without this change in methodology.

During the three months ended June 30, 2014, the Company refined the method it uses to evaluate historical losses for the purpose of estimating the pool allowance for unimpaired loans. In the third quarter of 2010, the Company moved from a six point grading system (Grades A-F) to a nine point risk rating system (Risk Ratings 1-9), primarily to allow for more distinction within the “Pass” risk rating. Initially, there was not sufficient loss experience within the nine point scale to complete a migration analysis for all nine risk ratings, all loans risk rated Pass or 2-5 were grouped together, a loss rate was calculated for that group, and that loss rate was established as the loss rate for risk rating 4. The reserve ratios for risk ratings 2, 3 and 5 were then interpolated from that figure. As of June 30, 2014, the Company was able to compile twelve quarters of historical loss information for all risk ratings and use that information to calculate the loss rates for each of the nine risk ratings without interpolation. This refinement led to an increase of $1,438,000 in the reserve requirement for unimpaired loans, driven primarily by home equity lines of credit with a risk rating of 5 or “Pass-Watch.”

Loans purchased or acquired in a business combination are referred to as acquired loans. Acquired loans are valued as of the acquisition date in accordance with Financial Accounting Standards Board Accounting Standards Codification (“FASB ASC”) Topic 805, Business Combinations. Loans acquired with evidence of credit deterioration since origination for which it is probable that all contractually required payments will not be collected are referred to as purchased credit impaired (PCI) loans. PCI loans are accounted for under FASB ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality. Under FASB ASC Topic 805 and FASB ASC Topic 310-30, PCI loans are recorded at fair value at acquisition date, factoring in credit losses expected to be incurred over the life of the loan. Accordingly, an allowance for loan losses is not carried over or recorded as of the acquisition date. Fair value is defined as the present value of the future estimated principal and interest payments of the loan, with the discount rate used in the present value calculation representing the estimated effective yield of the loan. Default rates, loss severity, and prepayment speed assumptions are periodically reassessed and our estimate of future payments is adjusted accordingly. The difference between contractual future payments and estimated future payments is referred to as the nonaccretable difference. The difference between estimated future payments and the present value of the estimated future payments is referred to as the accretable yield. The accretable yield represents the amount that is expected to be recorded as interest income over the remaining life of the loan. If after acquisition, the Company determines that the estimated future cash flows of a PCI loan are expected to be more than originally estimated, an increase in the discount rate (effective yield) would be made such that the newly increased accretable yield would be recognized, on a level yield basis, over the remaining estimated life of the loan. If, after acquisition, the Company determines that the estimated future cash flows of a PCI loan are expected to be less than previously estimated, the discount rate would first be reduced until the present value of the reduced cash flow estimate equals the previous present value however, the discount rate may not be lowered below its original level at acquisition. If the discount rate has been lowered to its original level and the present value has not been sufficiently lowered, an allowance for loan loss would be established through a provision for loan losses charged to expense to decrease the present value to the required level. If the estimated cash flows improve after an allowance has been established for a loan, the allowance may be partially or fully reversed depending on the improvement in the estimated cash flows. Only after the allowance has been fully reversed may the discount rate be increased. PCI loans are put on nonaccrual status when cash flows cannot be reasonably estimated. PCI loans on nonaccrual status are accounted for using the cost recovery method or cash basis method of income recognition. The Company refers to PCI loans on nonaccrual status that are accounted for using the cash basis method of income recognition as “PCI – cash basis” loans; and the Company refers to all other PCI loans as “PCI – other” loans PCI loans are charged off when evidence suggests cash flows are not recoverable. Foreclosed assets from PCI loans are recorded in foreclosed assets at fair value with the fair value at time of foreclosure representing cash flow from the loan. ASC 310-30 allows PCI loans with similar risk characteristics and acquisition time frame to be “pooled” and have their cash flows aggregated as if they were one loan. The Company elected to use the “pooled” method of ASC 310-30 for PCI – other loans in the acquisition of certain assets and liabilities of Granite Community Bank, N.A. (“Granite”) during 2010 and Citizens Bank of Northern California (“Citizens”) during 2011.

Acquired loans that are not PCI loans are referred to as purchased not credit impaired (PNCI) loans. PNCI loans are accounted for under FASB ASC Topic 310-20, Receivables – Nonrefundable Fees and Other Costs, in which interest income is accrued on a level-yield basis for performing loans. For income recognition purposes, this method assumes that all contractual cash flows will be collected, and no allowance for loan losses is established at the time of acquisition. Post-acquisition date, an allowance for loan losses may need to be established for acquired loans through a provision charged to earnings for credit losses incurred subsequent to acquisition. Under ASC 310-20, the loss would be measured based on the probable shortfall in relation to the contractual note requirements, consistent with our allowance for loan loss policy for similar loans.

Throughout these financial statements, and in particular in Note 4 and Note 5, when we refer to “Loans” or “Allowance for loan losses” we mean all categories of loans, including Originated, PNCI, PCI – cash basis, and PCI – other. When we are not referring to all categories of loans, we will indicate which we are referring to – Originated, PNCI, PCI – cash basis, or PCI – other.

When referring to PNCI and PCI loans we will use the terms “nonaccretable difference”, “accretable yield”, or “purchase discount”. Nonaccretable difference is the difference between undiscounted contractual cash flows due and undiscounted cash flows we expect to collect, or put another way, it is the undiscounted contractual cash flows we do not expect to collect. Accretable yield is the difference

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between undiscounted cash flows we expect to collect and the value at which we have recorded the loan on our financial statements. On the date of acquisition, all purchased loans are recorded on our consolidated financial statements at estimated fair value. Purchase discount is the difference between the estimated fair value of loans on the date of acquisition and the principal amount owed by the borrower, net of charge offs, on the date of acquisition. We may also refer to “discounts to principal balance of loans owed, net of charge-offs”. Discounts to principal balance of loans owed, net of charge-offs is the difference between principal balance of loans owed, net of charge-offs, and loans as recorded on our financial statements. Discounts to principal balance of loans owed, net of charge-offs arise from purchase discounts, and equal the purchase discount on the acquisition date.

Loans are also categorized as “covered” or “noncovered”. Covered loans refer to loans covered by a Federal Deposit Insurance Corporation (“FDIC”) loss sharing agreement. Noncovered loans refer to loans not covered by a FDIC loss sharing agreement.

Foreclosed Assets

Foreclosed assets include assets acquired through, or in lieu of, loan foreclosure. Foreclosed assets are held for sale and are initially recorded at fair value less estimated costs to sell at the date of foreclosure, establishing a new cost basis. Subsequent to foreclosure, management periodically performs valuations and the assets are carried at the lower of carrying amount or fair value less cost to sell. Revenue and expenses from operations and changes in the valuation allowance are included in other noninterest expense. Gain or loss on sale of foreclosed assets is included in noninterest income. Foreclosed assets that are not subject to a FDIC loss-share agreement are referred to as noncovered foreclosed assets.

Foreclosed assets acquired through FDIC-assisted acquisitions that are subject to a FDIC loss-share agreement, and all assets acquired via foreclosure of covered loans are referred to as covered foreclosed assets. Covered foreclosed assets are reported exclusive of expected reimbursement cash flows from the FDIC. Foreclosed covered loan collateral is transferred into covered foreclosed assets at the loan’s carrying value, inclusive of the acquisition date fair value discount.

Covered foreclosed assets are initially recorded at estimated fair value less estimated costs to sell on the acquisition date based on similar market comparable valuations less estimated selling costs. Any subsequent valuation adjustments due to declines in fair value will be charged to noninterest expense, and will be mostly offset by noninterest income representing the corresponding increase to the FDIC indemnification asset for the offsetting loss reimbursement amount. Any recoveries of previous valuation adjustments will be credited to noninterest expense with a corresponding charge to noninterest income for the portion of the recovery that is due to the FDIC.

Premises and Equipment

Land is carried at cost. Land improvements, buildings and equipment, including those acquired under capital lease, are stated at cost less accumulated depreciation and amortization. Depreciation and amortization expenses are computed using the straight-line method over the estimated useful lives of the related assets or lease terms. Asset lives range from 3-10 years for furniture and equipment and 15-40 years for land improvements and buildings.

Goodwill and Other Intangible Assets

Goodwill represents the excess of costs over fair value of net assets of businesses acquired. Goodwill and other intangible assets acquired in a purchase business combination and determined to have an indefinite useful life are not amortized, but instead tested for impairment at least annually. Intangible assets with estimable useful lives are amortized over their respective estimated useful lives to their estimated residual values, and reviewed for impairment.

The Company has an identifiable intangible asset consisting of core deposit intangibles (CDI). CDI are amortized over their respective estimated useful lives, and reviewed for impairment.

Impairment of Long-Lived Assets and Goodwill

Long-lived assets, such as premises and equipment, and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized by the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of would be separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and are no longer depreciated. The assets and liabilities of a disposed group classified as held for sale would be presented separately in the appropriate asset and liability sections of the consolidated balance sheet.

As of December 31 of each year, goodwill is tested for impairment, and is tested for impairment more frequently if events and circumstances indicate that the asset might be impaired. An impairment loss is recognized to the extent that the carrying amount exceeds the asset’s fair value. This determination is made at the reporting unit level. The Company may choose to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, the Company determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then goodwill is deemed not to be impaired. However, if the Company concludes otherwise, or if the Company elected not to first assess qualitative factors, then the Company performs the first step of a two-step impairment test by calculating the fair value of the reporting unit and comparing the fair value with the carrying amount of the reporting unit. Second, if the carrying amount of the reporting unit exceeds its fair value, an impairment loss is recognized for any excess of the carrying amount of the reporting unit’s goodwill over the implied fair value of that goodwill. The implied fair value of goodwill is determined by allocating the fair value of the reporting unit in a manner similar to a purchase price allocation. The residual fair value after this allocation is

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the implied fair value of the reporting unit goodwill. Currently, and historically, the Company is comprised of only one reporting unit that operates within the business segment it has identified as “community banking”. Goodwill was not impaired as of December 31, 2014 because the fair value of the reporting unit exceeded its carrying value.

Mortgage Servicing Rights

Mortgage servicing rights (MSR) represent the Company’s right to a future stream of cash flows based upon the contractual servicing fee associated with servicing mortgage loans. Our MSR arise from residential and commercial mortgage loans that we originate and sell, but retain the right to service the loans. The net gain from the retention of the servicing right is included in gain on sale of loans in noninterest income when the loan is sold. Fair value is based on market prices for comparable mortgage servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, the custodial earnings rate, an inflation rate, ancillary income, prepayment speeds and default rates and losses. Servicing fees are recorded in noninterest income when earned.

The Company accounts for MSR at fair value. The determination of fair value of our MSR requires management judgment because they are not actively traded. The determination of fair value for MSR requires valuation processes which combine the use of discounted cash flow models and extensive analysis of current market data to arrive at an estimate of fair value. The cash flow and prepayment assumptions used in our discounted cash flow model are based on empirical data drawn from the historical performance of our MSR, which we believe are consistent with assumptions used by market participants valuing similar MSR, and from data obtained on the performance of similar MSR. The key assumptions used in the valuation of MSR include mortgage prepayment speeds and the discount rate. These variables can, and generally will, change from quarter to quarter as market conditions and projected interest rates change. The key risks inherent with MSR are prepayment speed and changes in interest rates. The Company uses an independent third party to determine fair value of MSR.

Indemnification Asset/Liability

The Company accounts for amounts receivable or payable under its loss-share agreements entered into with the FDIC in connection with its purchase and assumption of certain assets and liabilities of Granite as indemnification assets in accordance with FASB ASC Topic 805, Business Combinations. FDIC indemnification assets are initially recorded at fair value, based on the discounted value of expected future cash flows under the loss-share agreements. The difference between the fair value and the undiscounted cash flows the Company expects to collect from or pay to the FDIC will be accreted into noninterest income over the life of the FDIC indemnification asset. FDIC indemnification assets are reviewed quarterly and adjusted for any changes in expected cash flows based on recent performance and expectations for future performance of the covered portfolios. These adjustments are measured on the same basis as the related covered loans and covered other real estate owned. Any increases in cash flow of the covered assets over those expected will reduce the FDIC indemnification asset and any decreases in cash flow of the covered assets under those expected will increase the FDIC indemnification asset. Increases and decreases to the FDIC indemnification asset are recorded as adjustments to noninterest income.

Reserve for Unfunded Commitments

The reserve for unfunded commitments is established through a provision for losses – unfunded commitments charged to noninterest expense. The reserve for unfunded commitments is an amount that Management believes will be adequate to absorb probable losses inherent in existing commitments, including unused portions of revolving lines of credits and other loans, standby letters of credits, and unused deposit account overdraft privilege. The reserve for unfunded commitments is based on evaluations of the collectability, and prior loss experience of unfunded commitments. The evaluations take into consideration such factors as changes in the nature and size of the loan portfolio, overall loan portfolio quality, loan concentrations, specific problem loans and related unfunded commitments, and current economic conditions that may affect the borrower’s or depositor’s ability to pay.

During the three months ended June 30, 2013, the Company modified the methodology employed to estimate potential losses on unfunded commitments. Similar to the Allowance for Loan Losses, the Company performs a migration analysis of historical loss experience. Prior to this quarter, the loss experience of each quarter over the previous three years was reviewed in order to calculate an annualized loss rate by loan category. Going forward, the Company has chosen to review all loss experience available since the conversion to a loss migration analysis. This change is intended to more accurately reflect the risk inherent in the unfunded commitments and appropriately consider all losses incurred in prior years. This change in methodology resulted in the reserve for unfunded commitments as of June 30, 2013 being $335,000 more than it would have been without this change in methodology.

Income Taxes

The Company’s accounting for income taxes is based on an asset and liability approach. The Company recognizes the amount of taxes payable or refundable for the current year, and deferred tax assets and liabilities for the future tax consequences that have been recognized in its financial statements or tax returns. The measurement of tax assets and liabilities is based on the provisions of enacted tax laws. A valuation allowance, if needed, reduces deferred tax assets to the expected amount most likely to be realized. Realization of deferred tax assets is dependent upon the generation of a sufficient level of future taxable income and recoverable taxes paid in prior years. Although realization is not assured, management believes it is more likely than not that all of the deferred tax assets will be realized. Interest and/or penalties related to income taxes are reported as a component of noninterest income.

Off-Balance Sheet Credit Related Financial Instruments

In the ordinary course of business, the Company has entered into commitments to extend credit, including commitments under credit card arrangements, commercial letters of credit, and standby letters of credit. Such financial instruments are recorded when they are funded.

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Geographical Descriptions

For the purpose of describing the geographical location of the Company’s loans, the Company has defined northern California as that area of California north of, and including, Stockton; central California as that area of the state south of Stockton, to and including, Bakersfield; and southern California as that area of the state south of Bakersfield.

Reclassifications

Certain amounts reported in previous consolidated financial statements have been reclassified to conform to the presentation in this report. These reclassifications did not affect previously reported net income or total shareholders’ equity.

Recent Accounting Pronouncements

FASB issued ASU No. 2014-04, Receivables (Topic 310): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure. ASU 2014-04 clarifies when an in substance repossession or foreclosure occurs, that is, when a creditor should be considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan such that the loan receivable should be derecognized and the real estate property recognized. ASU 2014-04 is effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. ASU 2014-04 is not expected to have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU No. 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity. ASU 2014-08 improves the definition of discontinued operations by limiting discontinued operations reporting to disposals of components of an entity that represent strategic shifts that have (or will have) a major effect on an entity’s operations and financial results. ASU 2014-08 requires expanded disclosures for discontinued operations that provide users of financial statements with more information about the assets, liabilities, revenues, and expenses of discontinued operations. ASU 2014-08 also requires an entity to disclose the pretax profit or loss of an individually significant component of an entity that does not qualify for discontinued operations reporting, and provide users with information about the financial effects of significant disposals that do not qualify for discontinued operations reporting. The amendments in ASU 2014-08 include several changes to the Accounting Standards Codification to improve the organization and readability of Subtopic 205-20 and Subtopic 360-10, Property, Plant, and Equipment—Overall. ASU 2014-08 is effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. ASU 2014-08 is not expected to have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). The core principle of the guidance under ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 is effective for a public entity for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. The Company is currently evaluating the effects of ASU 2014-09 on its financial statements and disclosures, if any.

FASB issued ASU No. 2014-11, Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures. ASU 2014-11 requires that repurchase-to-maturity transactions be accounted for as secured borrowings consistent with the accounting for other repurchase agreements. In addition, ASU 2014-11 requires separate accounting for repurchase financings, which entails the transfer of a financial asset executed contemporaneously with a repurchase agreement with the same counterparty. ASU 2014-11 requires entities to disclose certain information about transfers accounted for as sales in transactions that are economically similar to repurchase agreements. In addition, ASU 2014-11 requires disclosures related to collateral, remaining contractual tenor and of the potential risks associated with repurchase agreements, securities lending transactions and repurchase-to-maturity transactions. ASU 2014-11 is effective for public business entities for the first interim or annual period beginning after December 15, 2014. An entity is required to present changes in accounting for transactions outstanding on the effective date as a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. Earlier application for a public business entity is prohibited. ASU 2014-11 is not expected to have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU No. 2014-12, Compensation—Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be achieved after the Requisite Service Period. ASU 2014-12 requires that a performance target that affects the vesting of a share-based payment award and that could be achieved after the requisite service period be treated as a performance condition. A reporting entity should apply existing guidance in Topic 718 as it relates to awards with performance conditions that affect vesting to account for such awards. As such, the performance target should not be reflected in estimating the grant-date fair value of the award. Compensation cost should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. If the performance target becomes probable of being achieved before the end of the requisite service period, the remaining unrecognized compensation cost should be recognized prospectively over the remaining requisite service period. The total amount of compensation cost recognized during and after the requisite service period should reflect the number of awards that are expected to vest and should be adjusted to reflect those awards that ultimately vest. The requisite service period ends when the employee can cease rendering service and still be eligible to vest in the award if the performance target is achieved. The stated vesting period (which includes the period in which the performance target could be achieved) may differ from the requisite service period. Current U.S. GAAP does not contain explicit guidance on whether to treat a performance target that could be achieved after the requisite service period as a performance condition that affects vesting or as a nonvesting condition that affects the grant-date fair value of an award. ASU 2014-12 provides explicit guidance for those awards. For all entities, ASU 2014-12 is effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. Earlier adoption is permitted.

FASB issued ASU No. 2014-14, Receivables—Troubled Debt Restructurings by Creditors (Topic 310): Classification of Certain Government Mortgage Loans upon Foreclosure. ASU 2014-14 requires that a mortgage loan be derecognized and that a separate other receivable be

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recognized upon foreclosure if the following conditions are met: 1) the loan has a government guarantee that is not separable from the loan before foreclosure, 2) at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under that claim, and 3) at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed. Upon foreclosure, the separate other receivable should be measured based on the amount of the loan balance (principal and interest) expected to be recovered from the guarantor. For public business entities, ASU 2014-14 is effective for annual periods and interim periods within those annual periods beginning after December 15, 2014. Earlier adoption is permitted.

Note 2 - Business Combinations

On October 3, 2014, TriCo completed its acquisition of North Valley Bancorp originally announced January 21, 2014. Based on a fixed exchange ratio of 0.9433 shares of TriCo common stock for each share of North Valley Bancorp common stock, North Valley Bancorp shareholders received 6,575,550 shares of TriCo common stock and $6,823 of cash in-lieu of fractional shares. The 6,575,550 shares of TriCo common stock issued to North Valley Bancorp shareholders represented, on a pro forma basis, approximately 28.9% of the 22,714,964 shares of the combined company outstanding on October 3, 2014. Based on TriCo’s closing stock price of $23.01 on October 3, 2014, North Valley Bancorp shareholders received consideration valued at $151,310,000 or approximately $21.71 per share of North Valley common stock outstanding.

The acquisition of North Valley Bancorp was to expand the Company’s market presence in Northern California. The customer base and locations of North Valley Bancorp’s branches had significant overlap when compared to the Company’s Northern California customer base and branch locations. This made North Valley Bancorp a very good fit in terms of potential cost savings and future growth potential. With the levels of excess capital at the time, the acquisitions fit well into the Company’s growth strategy.

North Valley Bancorp, was headquartered in Redding, California, and was the parent of North Valley Bank that had approximately $935 million in assets and 22 commercial banking offices in Shasta, Humboldt, Del Norte, Mendocino, Yolo, Sonoma, Placer and Trinity Counties in Northern California at June 30, 2014. In connection with the acquisition, North Valley Bank was merged into Tri Counties Bank on October 3, 2014.

On October 25, 2014, North Valley Bank’s electronic customer service and other data processing systems were converted into Tri Counties Bank’s systems. Between January 7, 2015 and January 21, 2015, four Tri Counties Bank branches and four former North Valley Bank branches were consolidated into other Tri Counties Bank or other former North Valley Bank branches.

Beginning on October 4, 2014, the effect of revenue and expenses from the operations of North Valley Bancorp, and the issuance of TriCo Bancshares common shares as consideration in the merger are included in the results of the Company.

The assets acquired and liabilities assumed from North Valley Bancorp were accounted for in accordance with ASC 805 “Business Combinations,” using the acquisition method of accounting and were recorded at their estimated fair values on the October 3, 2014 acquisition date, and its results of operations are included in the Company’s consolidated statements of income since that date. The excess of the fair value of consideration transferred over total identifiable net assets was recorded as goodwill. The goodwill arising from the acquisition consists largely of the synergies and economies of scale expected from combining the operations of the Company and North Valley Bancorp. None of the goodwill is deductible for income tax purposes as the acquisition was accounted for as a tax-free exchange. The fair value estimate for loans is considered provisional as additional information related to the fair value of such loans as of October 3, 2014 may become available in the future. Management may adjust the fair value of loans acquired from North Valley Bancorp for a period of up to one year from the date of the acquisition. Any adjustment to the fair value of loans acquired from North Valley Bancorp would have residual effects on deferred tax assets and goodwill.

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The following table discloses the calculation of the fair value of consideration transferred, the total identifiable net assets acquired and the resulting goodwill relating to the North Valley Bancorp acquisition:

(in thousands)	North Valley Bancorp October 3, 2014
Fair value of consideration transferred:
Fair value of shares issued	$	151,303
Cash consideration		7
Total fair value of consideration transferred		151,310
Asset acquired:
Cash and cash equivalents		141,412
Securities available for sale		17,297
Securities held to maturity		189,949
Restricted equity securities		5,378
Loans		499,327
Foreclosed assets		695
Premises and equipment		11,936
Cash value of life insurance		38,075
Core deposit intangible		6,614
Other assets		20,056
Total assets acquired		930,739
Liabilities assumed:
Deposits		801,956
Other liabilities		10,429
Junior subordinated debt		14,987
Total liabilities assumed		827,372
Total net assets acquired		103,367
Goodwill recognized	$	47,943

A summary of the estimated fair value adjustments resulting in the goodwill recorded in the North Valley Bancorp acquisition are presented below:

(in thousands)	North Valley Bancorp October 3, 2014
Value of stock consideration paid to North Valley Bancorp Shareholders		151,303
Cash payments to North
Valley Bancorp Shareholders		7
Cost basis net assets acquired	$	(98,040	)
Fair value adjustments:
Loans		5,832
Premises and Equipment		(4,785	)
Core deposit intangible		(6,283	)
Deferred income taxes		6,293
Junior subordinated debt		(6,664	)
Other		280
Goodwill	$	47,943

The loan portfolio of North Valley Bancorp was recorded at fair value at the date of each acquisition. A valuation of North Valley Bancorp’s loan portfolio was performed as of the acquisition date to assess the fair value of the loan portfolio. The North Valley Bancorp loan portfolio was segmented into two groups; loans with credit deterioration (PCI loans) and loans without credit deterioration (PNCI). For North Valley Bancorp PNCI loans, the present value of estimated future cash flows, based primarily on contractual cash flows, was used to determine fair value. For North Valley Bancorp PCI loans, the present value of estimated future cash flows, based primarily on liquidation value of collateral, was used to determine fair value.

North Valley Bancorp PNCI loans were grouped into pools based on similar loan characteristics such as loan type, payment amortization method, and fixed or variable interest rates. A discounted cash flow schedule was prepared for each pool in which the present value of all estimated future cash flows was calculated using a specifically calculated discount rate for each pool. The discount rate used to estimate the fair value of each loan pool was composed of the sum of: an estimated cost of funds rate, an estimated capital charge reflecting the market participant required return on capital, estimated loan servicing costs, and a liquidity premium. All PNCI loan pools included some estimate regarding prepayment rates, and estimated principal default and loss rates, based primarily on North Valley Bancorp’s historical loss experience. The difference between the sum of recorded balances of the North Valley Bancorp PNCI loans in each pool and the present value of each pool represented the total discount (if the recorded value exceeded the present value) or premium (if the present value exceeded the

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recorded value) for each pool. The total discount, or premium, for each pool was then allocated to the individual loans within each pool based on outstanding loan balance, individual loan risk rating as compared to the weighted average risk rating of the pool, and the contractual payments remaining for the individual loan as compared to the pool.

North Valley Bancorp PCI loans were fair valued on an individual basis. A discounted cash flow schedule was prepared for each loan in which the present value of all future estimated cash flows was calculated using a specifically calculated discount rate, estimated liquidation value and estimated liquidation timing for each loan. The discount rate used in the calculation of the present value of North Valley Bancorp PCI loans was composed of the sum of: an estimated cost of funds rate, an estimated capital charge reflecting the market participant required return on capital, estimated loan servicing costs, and a liquidity premium. The difference between the recorded balance and the present value of each North Valley Bancorp PCI loan represented the discount for each PCI loan. All North Valley Bancorp PCI loans had recorded values in excess of their present value of estimated future cash flows.

The Company identified the North Valley Bancorp PCI loans as having cash flows that were not reasonably estimable and placed these loans in nonaccrual status under ASC 310-30 and included them in the category of loans the Company refers to as “PCI – other” loans.

The following table presents the cost basis, fair value discount, and fair value of loans acquired from North Valley Bancorp on October 3, 2014:

	North Valley Bancorp Acquired Loans October 3, 2014
(in thousands)	Cost Basis		Discount			Fair Value
PNCI	$	502,637	$	(12,721	)	$	489,916
PCI – other		11,488		(2,077	)		9,411
Total	$	514,125	$	(14,798	)	$	499,327

Although the discount on PNCI loans is completely accretable to interest income over the remaining life of such loans, the discount on PCI – other loans from the North Valley Bancorp acquisition are not accretable into interest income until the loan principal balance has been reduced to the loan’s fair value recorded at acquisition. This method of accounting for the PCI – other loans from the North Valley Bancorp acquisition is often referred to as the “cost recovery” method of income recognition.

The following table presents a reconciliation of the undiscounted contractual cash flows, nonaccretable difference, accretable yield, fair value, purchase discount, and principal balance of loans for the PNCI and PCI—other categories of North Valley Bancorp loans as of the acquisition date. For North Valley Bancorp PCI – other loans, the purchase discount does not necessarily represent cash flows to be collected:

	North Valley Bancorp Loans – October 3, 2014
(in thousands)	PNCI			PCI—other			Total
Undiscounted contractual cash flows	$	718,731		$	15,706		$	734,437
Undiscounted cash flows not expected to be collected (nonaccretable difference)		—			(6,295	)		(6,295	)
Undiscounted cash flows expected to be collected		718,731			9,411			728,142
Accretable yield at acquisition		(228,815	)		—			(228,815	)
Estimated fair value of loans acquired at acquisition		489,916			9,411			499,327
Purchase discount		12,721			2,077			14,798
Principal balance loans acquired	$	502,637		$	11,488		$	514,125

As part of the acquisition of North Valley Bancorp, the Company performed a valuation of premises and equipment acquired. This valuation resulted in a $4,785,000 increase in the net book value of land and buildings acquired, and was based on current appraisals of such land and buildings.

The Company recognized a core deposit intangible of $6,614,000 related to the acquisition of North Valley Bancorp’s core deposits. The recorded core deposit intangibles represented approximately 0.97% of core deposits for North Valley Bancorp and will be amortized over their useful lives of 7 years.

A valuation of time deposits for North Valley Bancorp was also performed as of the acquisition date. Time deposits were split into similar pools based on size, type of time deposits, and maturity. A discounted cash flow analysis was performed on the pools based on current market rates currently paid on similar time deposits. The valuation resulted in no material fair value discount or premium, and none was recorded.

The fair value of junior subordinated debentures assumed from North Valley Bancorp was estimated using a discounted cash flow method based on the current market rates for similar liabilities. As a result a discount of $6,664,000 was recorded on the junior subordinated debentures acquired from North Valley Bancorp. The discount on the subordinated debentures will be amortized using the effective yield method the remaining life to maturity of the debentures at acquisition which range from 18 years to 21 years.

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The Company assumed 13 lease contracts from North Valley Bancorp. The fair value measurements of theses leasehold interests were performed to determine whether the lease terms were favorable or unfavorable relative to current market rates of similar leases. The fair value of leasehold interests was recorded based on estimated future cash flow projections using market rates for similar leases. As a result, on the acquisition dates, we recorded unfavorable leasehold interests of $293,000.

The Company recorded a $6,293,000 reduction in deferred tax assets due to the tax effects of the other acquisition accounting fair value adjustments noted above, and a $1,341,000 decrease in the North Valley Bancorp deferred tax asset related to net operating loss carryforwards that the Company determined will not be realizable.

During the 2014, the Company recorded approximately $4,858,000 in one-time costs associated with the acquisition of North Valley Bancorp, including $1,269,000 that was not tax deductible. These costs included expense related to severance and other salaries and benefits expenses, consulting fees, legal fees, contract termination fees, and other expense. The system integration and conversion for North Valley Bancorp was completed during the fourth quarter of 2014. The Company consolidated four former North Valley Bank, and four Tri Counties Bank branches into other Tri Counties Bank branches or other former North Valley Bank branches during January 2015.

The table below presents the unaudited proforma information as if the acquisition of North Valley Bancorp had occurred on January 1, 2013 after giving effect to certain acquisition accounting adjustments. The proforma information for the years ended December 31, 2014 and 2013 includes acquisition adjustments for the amortization/accretion on loans, core deposit intangibles, junior subordinated debt and related income tax effects. The proforma financial information also includes one-time costs associated with the acquisitions but does not include expected costs savings synergies that we expect to achieve. The unaudited pro forma financial information is not necessarily indicative of the results of operations that would have occurred had the transaction been effected on the assumed date.

	Proforma for the
	Year Ended December 31,
	2014			2013
(Unaudited, in thousands, except per share data)
Summarized Income Statement Data:
Net interest income	$	139,520		$	132,635
Provision for (benefit from) loan losses		(4,045	)		(715	)
Noninterest income		43,587			50,966
Noninterest expense		147,295			133,073
Income before income taxes		39,857			51,243
Income taxes		16,453			20,091
Net income	$	23,404		$	31,152
Basic earnings per share	$	1.03		$	1.38
Diluted earnings per share	$	1.02		$	1.37

It is impracticable to separately provide information regarding the revenue and earnings of North Valley Bancorp included in the Company’s consolidated income statement from the October 3, 2014 acquisition date to December 31, 2014 because the operations of North Valley Bancorp were substantially comingled with the operations of the Company as of the system conversion date of October 25, 2014.

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Note 3 - Investment Securities

The amortized cost and estimated fair values of investments in debt and equity securities are summarized in the following tables:

	December 31, 2014
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(in thousands)
Securities Available for Sale
Obligations of U.S. government corporations and agencies	$	71,144		4,001		(25	)	$	75,120
Obligations of states and political subdivisions		3,130		45		—			3,175
Corporate debt securities		1,891		17		—			1,908
Marketable equity securities		3,000		2		—			3,002
Total securities available for sale	$	79,165	$	4,065	$	(25	)	$	83,205
Securities Held to Maturity
Obligations of U.S. government corporations and agencies	$	660,836		13,055		(677	)	$	673,214
Obligations of states and political subdivisions		15,590		130		(155	)		15,565
Total securities held to maturity	$	676,426	$	13,185	$	(832	)	$	688,779

	December 31, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(in thousands)
Securities Available for Sale
Obligations of U.S. government corporations and agencies	$	93,055	$	4,445	$	(357	)	$	97,143
Obligations of states and political subdivisions		5,513		77		(1	)		5,589
Corporate debt securities		1,877		38		—			1,915
Total securities available for sale	$	100,445	$	4,560	$	(358	)	$	104,647
Securities Held to Maturity
Obligations of U.S. government corporations and agencies	$	227,864	$	298	$	(5,540	)	$	222,622
Obligations of states and political subdivisions		12,640		—		(1,455	)		11,185
Total securities held to maturity	$	240,504	$	298	$	(6,995	)	$	233,807

Investment securities totaling $14,130,000 were sold in 2014 resulting in no gain or loss on sale. No investment securities were sold during 2013, or 2012. Investment securities with an aggregate carrying value of $143,992,000 and $62,064,000 at December 31, 2014 and 2013, respectively, were pledged as collateral for specific borrowings, lines of credit and local agency deposits.

The amortized cost and estimated fair value of debt securities at December 31, 2014 by contractual maturity are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. At December 31, 2014, obligations of U.S. government corporations and agencies with a cost basis totaling $755,591,000 consist almost entirely of mortgage-backed securities whose contractual maturity, or principal repayment, will follow the repayment of the underlying mortgages. For purposes of the following table, the entire outstanding balance of these mortgage-backed securities issued by U.S. government corporations and agencies is categorized based on final maturity date. At December 31, 2014, the Company estimates the average remaining life of these mortgage-backed securities issued by U.S. government corporations and agencies to be approximately 5.3 years. Average remaining life is defined as the time span after which the principal balance has been reduced by half.

Investment Securities	Available for Sale				Held to Maturity
(In thousands)	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Due in one year	$	1,924	$	1,942		—		—
Due after one year through five years		1,095		1,135		—		—
Due after five years through ten years		30,977		32,316	$	1,118	$	1,106
Due after ten years		45,169		47,812		675,308		687,673
Totals	$	79,165	$	83,205	$	676,426	$	688,779

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Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, were as follows:

	Less than 12 months					12 months or more					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
December 31, 2014	(in thousands)
Securities Available for Sale:
Obligations of U.S. government corporations and agencies	$	6,774		(25	)		—		—			6,774		(25	)
Obligations of states and political subdivisions		—		—			—		—			—		—
Corporate debt securities		—		—			—		—			—		—
Marketable equity securities		—		—			—		—			—		—
Total securities available-for-sale	$	6,774		(25	)		—		—			6,774		(25	)
Securities Held to Maturity:
Obligations of U.S. government corporations and agencies	$	335		(1	)		56,288		(676	)		56,623		(677	)
Obligations of states and political subdivisions		1,600		(26	)		1,858		(129	)		3,458		(155	)
Corporate debt securities		—		—			—		—			—		—
Total securities held-to-maturity	$	1,935		(27	)		58,146		(805	)		60,081		(832	)

	Less than 12 months					12 months or more				Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
December 31, 2013	(in thousands)
Securities Available for Sale:
Obligations of U.S. government corporations and agencies	$	10,287	$	(357	)		—		—	$	10,287	$	(357	)
Obligations of states and political subdivisions		199		(1	)		—		—		199		(1	)
Corporate debt securities		—		—			—		—		—		—
Total securities available-for-sale	$	10,486	$	(358	)		—		—	$	10,486	$	(358	)
Securities Held to Maturity:
Obligations of U.S. government corporations and agencies	$	188,218	$	(5,540	)		—		—	$	188,218	$	(5,540	)
Obligations of states and political subdivisions		11,185		(1,455	)		—		—		11,185		(1,455	)
Corporate debt securities		—		—			—		—		—		—
Total securities held-to-maturity	$	199,403	$	(6,995	)		—		—	$	199,403	$	(6,995	)

Obligations of U.S. government corporations and agencies: Unrealized losses on investments in obligations of U.S. government corporations and agencies are caused by interest rate increases. The contractual cash flows of these securities are guaranteed by U.S. Government Sponsored Entities (principally Fannie Mae and Freddie Mac). It is expected that the securities would not be settled at a price less than the amortized cost of the investment. Because the decline in fair value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell and more likely than not will not be required to sell, these investments are not considered other-than-temporarily impaired. At December 31, 2014, 8 debt securities representing obligations of U.S. government corporations and agencies had unrealized losses with aggregate depreciation of 1.10% from the Company’s amortized cost basis.

Obligations of states and political subdivisions: The unrealized losses on investments in obligations of states and political subdivisions were caused by increases in required yields by investors in these types of securities. It is expected that the securities would not be settled at a price less than the amortized cost of the investment. Because the decline in fair value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell and more likely than not will not be required to sell, these investments are not considered other-than-temporarily impaired. At December 31, 2014, 5 debt securities representing obligations of states and political subdivisions had unrealized losses with aggregate depreciation of 4.26% from the Company’s amortized cost basis.

Corporate debt securities: At December 31, 2014, no corporate debt securities had unrealized losses.

Marketable equity securities: At December 31, 2014, no marketable equity securities had unrealized losses.

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Note 4 – Loans

A summary of loan balances follows (in thousands):

	December 31, 2014
	Originated			PNCI			PCI - Cash basis			PCI - Other			Total
Mortgage loans on real estate:
Residential 1-4 family	$	154,594		$	120,821			—		$	4,005		$	279,420
Commercial		928,797			376,225			—			30,917			1,335,939
Total mortgage loan on real estate		1,083,391			497,046			—			34,922			1,615,359
Consumer:
Home equity lines of credit		305,166			38,397		$	5,478			3,543			352,584
Home equity loans		23,559			6,985			125			645			31,314
Auto Indirect		112			—			—			—			112
Other		28,230			4,770			—			74			33,074
Total consumer loans		357,067			50,152			5,603			4,262			417,084
Commercial		126,611			40,899			8			7,427			174,945
Construction:
Residential		21,135			16,808			—			675			38,618
Commercial		24,545			11,973			—			—			36,518
Total construction		45,680			28,781			—			675			75,136
Total loans, net of deferred loan fees and discounts	$	1,612,749		$	616,878		$	5,611		$	47,286		$	2,282,524
Total principal balance of loans owed, net of charge-offs	$	1,617,542		$	634,490		$	14,805		$	56,016		$	2,322,853
Unamortized net deferred loan fees		(4,793	)		—			—			—			(4,793	)
Discounts to principal balance of loans owed, net of charge-offs		—			(17,612	)		(9,194	)		(8,730	)		(35,536	)
Total loans, net of unamortized deferred loan fees and discounts	$	1,612,749		$	616,878		$	5,611		$	47,286		$	2,282,524
Noncovered loans	$	1,612,749		$	616,878		$	5,611		$	25,018		$	2,260,256
Covered loans		—			—			—			22,268			22,268
Total loans, net of unamortized deferred loan fees and discounts	$	1,612,749		$	616,878		$	5,611		$	47,286		$	2,282,524
Allowance for loan losses	$	(29,860	)	$	(3,296	)	$	(348	)	$	(3,081	)	$	(36,585	)

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A summary of loan balances follows (in thousands):

	December 31, 2013
	Originated			PNCI			PCI - Cash basis			PCI - Other			Total
Mortgage loans on real estate:
Residential 1-4 family	$	129,882		$	60,475			—		$	4,656		$	195,013
Commercial		824,912			57,678			—			30,260			912,850
Total mortgage loan on real estate		954,794			118,153			—			34,916			1,107,863
Consumer:
Home equity lines of credit		316,207			13,576		$	6,200			3,883			339,866
Home equity loans		13,849			253			—			486			14,588
Auto Indirect		946			—			—			—			946
Other		25,608			2,074			—			81			27,763
Total consumer loans		356,610			15,903			6,200			4,450			383,163
Commercial		124,650			693			19			6,516			131,878
Construction:
Residential		30,367			—			—			1,566			31,933
Commercial		17,125			—			—			45			17,170
Total construction		47,492			—			—			1,611			49,103
Total loans, net of deferred loan fees and discounts	$	1,483,546		$	134,749		$	6,219		$	47,493		$	1,672,007
Total principal balance of loans owed, net of charge-offs	$	1,487,240		$	142,786		$	16,475		$	56,879		$	1,703,380
Unamortized net deferred loan fees		(3,694	)		—			—			—			(3,694	)
Discounts to principal balance of loans owed, net of charge-offs		—			(8,037	)		(10,256	)		(9,386	)		(27,679	)
Total loans, net of unamortized deferred loan fees and discounts	$	1,483,546		$	134,749		$	6,219		$	47,493		$	1,672,007
Noncovered loans	$	1,483,546		$	134,749		$	6,219		$	19,581		$	1,644,095
Covered loans		—			—			—			27,912			27,912
Total loans, net of unamortized deferred loan fees and discounts	$	1,483,546		$	134,749		$	6,219		$	47,493		$	1,672,007
Allowance for loan losses	$	(31,354	)	$	(2,850	)	$	(385	)	$	(3,656	)	$	(38,245	)

The following is a summary of the change in accretable yield for PCI – other loans during the periods indicated (in thousands):

	Year ended December 31,
	2014			2013
Change in accretable yield:
Balance at beginning of period	$	18,232		$	22,337
Accretion to interest income		(4,368	)		(6,305	)
Reclassification (to) from nonaccretable difference		1,009			2,201
Balance at end of period	$	14,873		$	18,232

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Note 5 – Allowance for Loan Losses

The following tables summarize the activity in the allowance for loan losses, and ending balance of loans, net of unearned fees for the periods indicated.

	Allowance for Loan Losses - Year Ended December 31, 2014
	RE Mortgage						Home Equity						Auto Indirect			Other Consum.						Construction
(in thousands)	Resid.			Comm.			Lines			Loans									C&I			Resid.			Comm.			Total
Beginning balance	$	3,154		$	9,700		$	16,375		$	1,208		$	66		$	589		$	4,331		$	1,559		$	1,263		$	38,245
Charge-offs		(171	)		(110	)		(1,094	)		(29	)		(3	)		(599	)		(479	)		(4	)		(69	)		(2,558	)
Recoveries		2			540			960			34			86			495			1,268			1,377			181			4,943
(Benefit) provision		101			(903	)		(565	)		584			(140	)		234			(894	)		(1,498	)		(964	)		(4,045	)
Ending balance	$	3,086		$	9,227		$	15,676		$	1,797		$	9		$	719		$	4,226		$	1,434		$	411		$	36,585
Ending balance:
Individ. evaluated for impairment	$	974		$	410		$	1,974		$	284			—		$	142		$	423		$	60			—		$	4,267
Loans pooled for evaluation	$	1,915		$	8,408		$	13,251		$	1,513		$	9		$	572		$	2,569		$	332		$	322		$	28,891
Loans acquired with deteriorated credit quality	$	197		$	409		$	451			—			—		$	5		$	1,234		$	1,042		$	89		$	3,427
	Loans, net of unearned fees - As of December 31, 2014
	RE Mortgage						Home Equity						Auto Indirect			Other Consum.						Construction
(in thousands)	Resid.			Comm.			Lines			Loans									C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	279,420		$	1,335,939		$	352,584		$	31,314		$	112		$	33,074		$	174,945		$	38,618		$	35,518		$	2,282,524
Individ. evaluated for impairment	$	7,188		$	41,932		$	6,968		$	1,278		$	18		$	323		$	1,757		$	2,683		$	99		$	62,246
Loans pooled for evaluation	$	268,227		$	1,263,090		$	336,595		$	29,266		$	94		$	32,677		$	165,753		$	35,260		$	36,419		$	2,167,381
Loans acquired with deteriorated credit quality	$	4,005		$	30,917		$	9,021		$	770			—		$	74		$	7,435		$	675			—		$	52,897
	Allowance for Loan Losses - Year Ended December 31, 2013
	RE Mortgage						Home Equity						Auto Indirect			Other Consum.						Construction
(in thousands)	Resid.			Comm.			Lines			Loans									C&I			Resid.			Comm.			Total
Beginning balance	$	3,523		$	8,782		$	21,367		$	1,155		$	243		$	696		$	4,703		$	1,400		$	779		$	42,648
Charge-offs		(46	)		(2,038	)		(2,651	)		(94	)		(68	)		(887	)		(1,599	)		(20	)		(140	)		(7,543	)
Recoveries		345			994			1,053			41			195			759			340			63			65			3,855
(Benefit) provision		(668	)		1,962			(3,394	)		106			(304	)		21			887			116			559			(715	)
Ending balance	$	3,154		$	9,700		$	16,375		$	1,208		$	66		$	589		$	4,331		$	1,559		$	1,263		$	38,245
Ending balance:
Individ. evaluated for impairment	$	775		$	1,198		$	1,140		$	169		$	1		$	8		$	585		$	91		$	8		$	3,975
Loans pooled for evaluation	$	2,039		$	7,815		$	14,749		$	1,039		$	65		$	581		$	2,402		$	751		$	789		$	30,230
Loans acquired with deteriorated credit quality	$	340		$	687		$	486			—			—			—		$	1,344		$	717		$	466		$	4,040
	Loans, net of unearned fees - As of December 31, 2013
	RE Mortgage						Home Equity						Auto Indirect			Other Consum.						Construction
(in thousands)	Resid.			Comm.			Lines			Loans									C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	195,013		$	912,850		$	339,866		$	14,588		$	946		$	27,763		$	131,878		$	31,933		$	17,170		$	1,672,007
Individ. evaluated for impairment	$	7,342		$	59,936		$	6,918		$	778		$	60		$	90		$	3,177		$	2,756		$	178		$	81,235
Loans pooled for evaluation	$	183,015		$	822,654		$	322,865		$	13,324		$	886		$	27,592		$	122,166		$	27,611		$	16,947		$	1,537,060
Loans acquired with deteriorated credit quality	$	4,656		$	30,260		$	10,083		$	486			—		$	81		$	6,535		$	1,566		$	45		$	53,712

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	Allowance for Loan Losses - Year Ended December 31, 2012
	RE Mortgage						Home Equity						Auto Indirect			Other Consum.						Construction
(in thousands)	Resid.			Comm.			Lines			Loans									C&I			Resid.			Comm.			Total
Beginning balance	$	2,404		$	13,217		$	18,258		$	1,101		$	215		$	932		$	6,545		$	1,817		$	1,425		$	45,914
Charge-offs		(1,558	)		(3,457	)		(8,042	)		(385	)		(83	)		(1,202	)		(1,251	)		(406	)		(100	)		(16,484	)
Recoveries		147			1,020			398			100			215			860			643			412			—			3,795
Provision (benefit)		2,530			(1,998	)		10,753			339			(104	)		106			(1,234	)		(423	)		(546	)		9,423
Ending balance	$	3,523		$	8,782		$	21,367		$	1,155		$	243		$	696		$	4,703		$	1,400		$	779		$	42,648
Ending balance:
Individ. evaluated for impairment	$	631		$	515		$	2,264		$	81		$	5		$	47		$	840		$	11		$	111		$	4,505
Loans pooled for evaluation	$	2,526		$	8,026		$	17,862		$	995		$	238		$	649		$	2,342		$	430		$	165		$	33,233
Loans acquired with deteriorated credit quality	$	366		$	241		$	1,241		$	79			—			—		$	1,521		$	959		$	503		$	4,910
	Loans, net of unearned fees – As of December 31, 2012
	RE Mortgage						Home Equity						Auto Indirect			Other Consum.						Construction
(in thousands)	Resid.			Comm.			Lines			Loans									C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	131,684		$	878,446		$	342,025		$	13,557		$	3,816		$	26,713		$	135,528		$	18,459		$	14,595		$	1,564,823
Individ. evaluated for impairment	$	6,586		$	71,077		$	10,056		$	528		$	197		$	121		$	8,562		$	3,596		$	607		$	101,330
Loans pooled for evaluation	$	120,082		$	776,137		$	318,403		$	12,825		$	3,619		$	26,560		$	117,429		$	8,281		$	10,589		$	1,393,925
Loans acquired with deteriorated credit quality	$	5,016		$	31,232		$	13,566		$	204			—		$	32		$	9,537		$	6,582		$	3,399		$	69,568

As part of the on-going monitoring of the credit quality of the Company’s loan portfolio, management tracks certain credit quality indicators including, but not limited to, trends relating to (i) the level of criticized and classified loans, (ii) net charge-offs, (iii) non-performing loans, and (iv) delinquency within the portfolio.

The Company utilizes a risk grading system to assign a risk grade to each of its loans. Loans are graded on a scale ranging from Pass to Loss. A description of the general characteristics of the risk grades is as follows:

• Pass – This grade represents loans ranging from acceptable to very little or no credit risk. These loans typically meet most if not all policy standards in regard to: loan amount as a percentage of collateral value, debt service coverage, profitability, leverage, and working capital.

• Special Mention – This grade represents “Other Assets Especially Mentioned” in accordance with regulatory guidelines and includes loans that display some potential weaknesses which, if left unaddressed, may result in deterioration of the repayment prospects for the asset or may inadequately protect the Company’s position in the future. These loans warrant more than normal supervision and attention.

• Substandard – This grade represents “Substandard” loans in accordance with regulatory guidelines. Loans within this rating typically exhibit weaknesses that are well defined to the point that repayment is jeopardized. Loss potential is, however, not necessarily evident. The underlying collateral supporting the credit appears to have sufficient value to protect the Company from loss of principal and accrued interest, or the loan has been written down to the point where this is true. There is a definite need for a well defined workout/rehabilitation program.

• Doubtful – This grade represents “Doubtful” loans in accordance with regulatory guidelines. An asset classified as Doubtful has all the weaknesses inherent in a loan classified Substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. Pending factors include proposed merger, acquisition, or liquidation procedures, capital injection, perfecting liens on additional collateral, and financing plans.

• Loss – This grade represents “Loss” loans in accordance with regulatory guidelines. A loan classified as Loss is considered uncollectible and of such little value that its continuance as a bankable asset is not warranted. This classification does not mean that the loan has absolutely no recovery or salvage value, but rather that it is not practical or desirable to defer writing off the loan, even though some recovery may be affected in the future. The portion of the loan that is graded loss should be charged off no later than the end of the quarter in which the loss is identified.

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The following tables present ending loan balances by loan category and risk grade for the periods indicated:

	Credit Quality Indicators – As of December 31, 2014
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines		Loans						C&I		Resid.		Comm.		Total
Originated loans:
Pass	$	146,949	$	883,102	$	292,244	$	20,976	$	66	$	27,396	$	124,707	$	18,112	$	24,436	$	1,537,988
Special mention		1,122		11,521		3,590		743		11		591		636		622		—		18,836
Substandard		6,523		34,174		9,332		1,840		35		243		1,268		2,401		109		55,925
Loss		—		—		—		—		—		—		—		—		—		—
Total originated	$	154,594	$	928,797	$	305,166	$	23,559	$	112	$	28,230	$	126,611	$	21,135	$	24,545	$	1,612,749
PNCI loans:
Pass	$	119,643	$	359,537	$	36,531	$	6,813		—	$	4,399	$	40,628	$	16,808	$	11,973	$	596,332
Special mention		547		12,979		936		147		—		230		268		—		—		15,107
Substandard		631		3,709		930		25		—		141		3		—		—		5,439
Loss		—		—		—		—		—		—		—		—		—		—
Total PNCI	$	120,821	$	376,225	$	38,397	$	6,985		—	$	4,770	$	40,899	$	16,808	$	11,973	$	616,878
PCI loans	$	4,005	$	30,917	$	9,021	$	770		—	$	74	$	7,435	$	675		—	$	52,897
Total loans	$	279,420	$	1,335,939	$	352,584	$	31,314	$	112	$	33,074	$	174,945	$	38,618	$	36,518	$	2,282,524
			Credit Quality Indicators – As of December 31, 2013
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines		Loans						C&I		Resid.		Comm.		Total
Originated loans:
Pass	$	121,969	$	768,596	$	203,232	$	12,284	$	717	$	24,653	$	121,580	$	25,836	$	16,571	$	1,394,438
Special mention		1,265		15,862		4,529		504		118		756		938		96		343		24,411
Substandard		6,648		40,454		9,446		1,061		111		196		2,122		4,435		211		64,684
Loss		—		—		—		—		—		3		10		—		—		13
Total originated	$	129,882	$	824,912	$	316,207	$	13,849	$	946	$	25,608	$	124,650	$	30,367	$	17,125	$	1,483,546
PNCI loans:
Pass	$	59,798	$	48,548	$	12,716	$	253		—	$	2,020	$	380		—		—	$	123,715
Special mention		—		5,810		195		—		—		18		313		—		—		6,336
Substandard		677		3,320		665		—		—		36		—		—		—		4,698
Loss		—		—		—		—		—		—		—		—		—		—
Total PNCI	$	60,475	$	57,678	$	13,576	$	253		—	$	2,074	$	693		—		—	$	134,749
PCI loans	$	4,656	$	30,260	$	10,083	$	486		—	$	81	$	6,535	$	1,566	$	45	$	53,712
Total loans	$	195,013	$	912,850	$	339,866	$	14,588	$	946	$	27,763	$	131,878	$	31,933	$	17,170	$	1,672,007

Consumer loans, whether unsecured or secured by real estate, automobiles, or other personal property, are susceptible to three primary risks; non-payment due to income loss, over-extension of credit and, when the borrower is unable to pay, shortfall in collateral value. Typically non-payment is due to loss of job and will follow general economic trends in the marketplace driven primarily by rises in the unemployment rate. Loss of collateral value can be due to market demand shifts, damage to collateral itself or a combination of the two.

Problem consumer loans are generally identified by payment history of the borrower (delinquency). The Bank manages its consumer loan portfolios by monitoring delinquency and contacting borrowers to encourage repayment, suggest modifications if appropriate, and, when continued scheduled payments become unrealistic, initiate repossession or foreclosure through appropriate channels. Collateral values may be determined by appraisals obtained through Bank approved, licensed appraisers, qualified independent third parties, public value information (blue book values for autos), sales invoices, or other appropriate means. Appropriate valuations are obtained at initiation of the credit and periodically (every 3-12 months depending on collateral type) once repayment is questionable and the loan has been classified.

Commercial real estate loans generally fall into two categories, owner-occupied and non-owner occupied. Loans secured by owner occupied real estate are primarily susceptible to changes in the business conditions of the related business. This may be driven by, among other things, industry changes, geographic business changes, changes in the individual fortunes of the business owner, and general economic conditions and changes in business cycles. These same risks apply to commercial loans whether secured by equipment or other personal property or unsecured. Losses on loans secured by owner occupied real estate, equipment, or other personal property generally are dictated by the value of underlying collateral at the time of default and liquidation of the collateral. When default is driven by issues related specifically to the business owner, collateral values tend to provide better repayment support and may result in little or no loss. Alternatively, when default is driven by more general economic conditions, underlying collateral generally has devalued more and results in larger losses due to default. Loans secured by non-owner occupied real estate are primarily susceptible to risks associated with swings in occupancy or vacancy and related shifts in lease rates, rental rates or room rates. Most often these shifts are a result of changes in general economic or market conditions or overbuilding and resultant over-supply. Losses are dependent on value of underlying collateral at the time of default. Values are generally driven by these same factors and influenced by interest rates and required rates of return as well as changes in occupancy costs.

73

Construction loans, whether owner occupied or non-owner occupied commercial real estate loans or residential development loans, are not only susceptible to the related risks described above but the added risks of construction itself including cost over-runs, mismanagement of the project, or lack of demand or market changes experienced at time of completion. Again, losses are primarily related to underlying collateral value and changes therein as described above.

Problem C&I loans are generally identified by periodic review of financial information which may include financial statements, tax returns, rent rolls and payment history of the borrower (delinquency). Based on this information the Bank may decide to take any of several courses of action including demand for repayment, additional collateral or guarantors, and, when repayment becomes unlikely through borrower’s income and cash flow, repossession or foreclosure of the underlying collateral.

Collateral values may be determined by appraisals obtained through Bank approved, licensed appraisers, qualified independent third parties, public value information (blue book values for autos), sales invoices, or other appropriate means. Appropriate valuations are obtained at initiation of the credit and periodically (every 3-12 months depending on collateral type) once repayment is questionable and the loan has been classified.

Once a loan becomes delinquent and repayment becomes questionable, a Bank collection officer will address collateral shortfalls with the borrower and attempt to obtain additional collateral. If this is not forthcoming and payment in full is unlikely, the Bank will estimate its probable loss, using a recent valuation as appropriate to the underlying collateral less estimated costs of sale, and charge the loan down to the estimated net realizable amount. Depending on the length of time until ultimate collection, the Bank may revalue the underlying collateral and take additional charge-offs as warranted. Revaluations may occur as often as every 3-12 months depending on the underlying collateral and volatility of values. Final charge-offs or recoveries are taken when collateral is liquidated and actual loss is known. Unpaid balances on loans after or during collection and liquidation may also be pursued through lawsuit and attachment of wages or judgment liens on borrower’s other assets.

The following table shows the ending balance of current, past due, and nonaccrual originated loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual Originated Loans – As of December 31, 2014
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines		Loans						C&I		Resid.		Comm.		Total
Originated loan balance:
Past due:
30-59 Days	$	1,296	$	735	$	2,066	$	615	$	4	$	64	$	739		—		—	$	5,519
60-89 Days		919		—		296		192		—		24		99		—		—		1,530
> 90 Days		100		900		754		202		17		46		61		—		—		2,080
Total past due	$	2,315	$	1,635	$	3,116	$	1,009	$	21	$	134	$	899		—		—	$	9,129
Current		152,279		927,162		302,050		22,550		91		28,096		125,712		21,135		24,545		1,603,620
Total orig. loans	$	154,594	$	928,797	$	305,166	$	23,559	$	112	$	28,230	$	126,611	$	21,135	$	24,545	$	1,612,749
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	3,430	$	20,736	$	4,336	$	1,197	$	18	$	66	$	246	$	2,401	$	99	$	32,529

The following table shows the ending balance of current, past due, and nonaccrual PNCI loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual PNCI Loans – As of December 31, 2014
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.		C&I		Construction
(in thousands)	Resid.		Comm.		Lines		Loans								Resid.		Comm.		Total
PNCI loan balance:
Past due:
30-59 Days	$	2,041	$	260	$	275		—		—	$	25	$	67		—		—	$	2,668
60-89 Days		24		—		118		—		—		3		—		—		—		145
> 90 Days		239		—		73		25		—		76		—		—		—		413
Total past due	$	2,304	$	260	$	466	$	25		—	$	104	$	67		—		—	$	3,226
Current		118,517		375,965		37,931		6,960		—		4,666		40,832		16,808		11,973	$	613,652
Total PNCI loans	$	120,821	$	376,225	$	38,397	$	6,985		—	$	4,770	$	40,899	$	16,808	$	11,973	$	616,878
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	799	$	366	$	346	$	25		—	$	110		—		—		—	$	1,646

74

The following table shows the ending balance of current, past due, and nonaccrual originated loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual Originated Loans – As of December 31, 2013
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.		C&I		Construction
(in thousands)	Resid.		Comm.		Lines		Loans								Resid.		Comm.		Total
Originated loan balance:
Past due:
30-59 Days	$	2,272	$	2,304	$	3,121	$	264	$	24	$	40	$	296		—		—	$	8,321
60-89 Days		284		—		1,070		16		1		16		76		—	$	198		1,661
> 90 Days		447		2,213		1,050		312		33		7		749		13		—		4,824
Total past due	$	3,003	$	4,517	$	5,241	$	592	$	58	$	63	$	1,121	$	13	$	198	$	14,806
Current		126,879		820,395		310,966		13,257		888		25,545		123,529		30,354		16,927		1,468,740
Total orig. loans	$	129,882	$	824,912	$	316,207	$	13,849	$	946		25,608	$	124,650	$	30,367	$	17,125	$	1,483,546
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	4,697	$	30,732	$	4,972	$	719	$	54	$	26	$	1,280	$	2,473	$	178	$	45,131

The following table shows the ending balance of current, past due, and nonaccrual PNCI loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual PNCI Loans – As of December 31, 2013
	RE Mortgage				Home Equity				Auto Indirect		Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans				Consum.		C&I		Resid.		Comm.		Total
PNCI loan balance:
Past due:
30-59 Days	$	799	$	512	$	313		—		—	$	49		—		—		—	$	1,673
60-89 Days		—		352		38		—		—		—		—		—		—		390
> 90 Days		—		217		—		—		—		—		—		—		—		217
Total past due	$	799	$	1,081	$	351		—		—	$	49		—		—		—	$	2,280
Current		59,676		56,597		13,225	$	253		—		2,025	$	693		—		—		132,469
Total PNCI loans	$	60,475	$	57,678	$	13,576	$	253		—	$	2,074	$	693		—		—	$	134,749
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	262	$	1,139	$	429		—		—	$	36		—		—		—	$	1,866

Impaired originated loans are those where management has concluded that it is probable that the borrower will be unable to pay all amounts due under the contractual terms. The following tables show the recorded investment (financial statement balance), unpaid principal balance, average recorded investment, and interest income recognized for impaired Originated and PNCI loans, segregated by those with no related allowance recorded and those with an allowance recorded for the periods indicated.

	Impaired Originated Loans – As of December 31, 2014
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines		Loans						C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	3,287	$	38,477	$	3,001	$	750	$	14	$	25	$	412	$	2,401	$	99	$	48,466
Unpaid principal	$	5,138	$	41,949	$	6,094	$	1,187	$	49	$	32	$	433	$	6,588	$	190	$	61,660
Average recorded Investment	$	3,826	$	45,915	$	3,355	$	651	$	35	$	21	$	1,030	$	2,437	$	84	$	57,354
Interest income Recognized	$	38	$	995	$	26	$	6		—	$	1	$	26		—	$	3	$	1,095
With an allowance recorded:
Recorded investment	$	2,724	$	2,943	$	3,185	$	504	$	4	$	41	$	1,338	$	282		—	$	11,021
Unpaid principal	$	2,865	$	3,101	$	3,533	$	597	$	6	$	41	$	1,438	$	282		—	$	11,863
Related allowance	$	797	$	302	$	1,769	$	284		—	$	11	$	423	$	60		—	$	3,646
Average recorded Investment	$	2,677	$	4,119	$	2,982	$	365	$	4	$	25	$	1,428	$	283	$	55	$	11,938
Interest income Recognized	$	91	$	144	$	71	$	13		—		—	$	71	$	19		—	$	409

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	Impaired PNCI Loans – As of December 31, 2014
	RE Mortgage				Home Equity					Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines			Loans						C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	343	$	366	$	346		$	25		—	$	37	$	7		—		—	$	1,124
Unpaid principal	$	353	$	2,620	$	374		$	25		—	$	54	$	7		—		—	$	3,433
Average recorded Investment	$	246	$	753	$	287		$	12		—	$	36	$	10		—		—	$	1,344
Interest income Recognized	$	14		—	$	(1	)		—		—		—	$	1		—		—	$	14
With an allowance recorded:
Recorded investment	$	834	$	146	$	436			—		—	$	220		—		—		—	$	1,636
Unpaid principal	$	852	$	146	$	436			—		—	$	220		—		—		—	$	1,654
Related allowance	$	177	$	108	$	205			—		—	$	131		—		—		—	$	621
Average recorded Investment	$	516	$	148	$	319			—		—	$	124		—		—		—	$	1,107
Interest income Recognized	$	8	$	8	$	20			—		—	$	12		—		—		—	$	48
	Impaired Originated Loans – As of December 31, 2013
	RE Mortgage				Home Equity					Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines			Loans						C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	4,366	$	53,352	$	3,710		$	552	$	55	$	16	$	1,648	$	2,473	$	69	$	66,241
Unpaid principal	$	6,489	$	58,894	$	7,299		$	1,249	$	123	$	21	$	1,665	$	6,611	$	138	$	82,489
Average recorded Investment	$	4,123	$	58,205	$	4,410		$	463	$	93	$	18	$	2,154	$	1,567	$	83	$	71,116
Interest income Recognized	$	336	$	3,361	$	352		$	36	$	12	$	1	$	113	$	108	$	7	$	4,326
With an allowance recorded:
Recorded investment	$	2,630	$	5,296	$	2,779		$	226	$	4	$	10	$	1,517	$	284	$	109	$	12,855
Unpaid principal	$	2,689	$	5,659	$	3,053		$	291	$	6	$	10	$	1,616	$	284	$	288	$	13,896
Related allowance Average recorded	$	648	$	1,084	$	968		$	169	$	1	$	5	$	585	$	91	$	7	$	3,558
Investment	$	2,245	$	6,077	$	3,064		$	141	$	12	$	7	$	1,817	$	1,499	$	188	$	15,050
Interest income Recognized	$	124	$	287	$	146		$	18	$	1	$	2	$	95	$	19	$	15	$	707
	Impaired PNCI Loans – As of December 31, 2013
	RE Mortgage				Home Equity					Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines			Loans						C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	148	$	1,139	$	227			—		—	$	36	$	12		—		—	$	1,562
Unpaid principal	$	158	$	3,323	$	287			—		—	$	45	$	12		—		—	$	3,825
Average recorded Investment	$	37	$	1,005	$	333			—		—	$	39	$	7		—		—	$	1,421
Interest income Recognized	$	11	$	233	$	21			—		—	$	5	$	1		—		—	$	271
With an allowance recorded:
Recorded investment	$	198	$	149	$	203			—		—	$	28		—		—		—	$	578
Unpaid principal	$	207	$	149	$	215			—		—	$	28		—		—		—	$	599
Related allowance	$	128	$	114	$	172			—		—	$	3		—		—		—	$	417
Average recorded Investment	$	275	$	250	$	162			—		—	$	29		—		—		—	$	716
Interest income Recognized	$	12	$	9	$	10			—		—	$	1		—		—		—	$	32

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	Impaired Originated Loans – As of December 31, 2012
	RE Mortgage				Home Equity				Auto Indirect		Other		C&I		Construction
(in thousands)	Resid.		Comm.		Lines		Loans				Consum.				Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	3,520	$	66,031	$	4,241	$	361	$	163	$	19	$	4,238	$	3,554	$	284	$	82,411
Unpaid principal	$	5,349	$	70,709	$	6,691	$	781	$	311	$	40	$	4,613	$	8,227	$	484	$	97,205
Average recorded Investment	$	6,329	$	61,299	$	4,311	$	329	$	263	$	42	$	7,500	$	3,505	$	517	$	84,095
Interest income Recognized	$	71	$	2,513	$	58	$	1	$	3		—	$	73	$	20	$	10	$	2,749
With an allowance recorded:
Recorded investment	$	2,867	$	3,258	$	5,412	$	167	$	34	$	30	$	4,324	$	42	$	323	$	16,457
Unpaid principal	$	3,432	$	3,556	$	7,103	$	396	$	51	$	32	$	4,992	$	42	$	523	$	20,127
Related allowance	$	603	$	352	$	2,237	$	81	$	5	$	12	$	840	$	11	$	111	$	4,252
Average recorded Investment	$	3,890	$	7,841	$	6,331	$	317	$	102	$	49	$	2,800	$	1,543	$	6,570	$	29,443
Interest income Recognized	$	67	$	129	$	103	$	16	$	1	$	1	$	100	$	6	$	5	$	428
	Impaired PNCI Loans – As of December 31, 2012
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines		Loans						C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment		—	$	1,468	$	365		—		—		—		—		—		—	$	1,833
Unpaid principal		—	$	3,452	$	586		—		—		—		—		—		—	$	4,038
Average recorded Investment	$	16	$	2,097	$	308	$	11		—	$	31	$	11		—		—	$	2,474
Interest income Recognized		—	$	133	$	5		—		—		—		—		—		—	$	138
With an allowance recorded:
Recorded investment	$	199	$	320	$	38		—		—	$	72		—		—		—	$	629
Unpaid principal	$	225	$	331	$	41		—		—	$	76		—		—		—	$	673
Related allowance	$	28	$	163	$	27		—		—	$	35		—		—		—	$	253
Average recorded Investment	$	213	$	121	$	148		—		—	$	43		—		—		—	$	525
Interest income Recognized	$	9	$	12	$	1		—		—	$	2		—		—		—	$	24

At December 31, 2014, $45,676,000 of Originated loans were TDRs and classified as impaired. The Company had obligations to lend $54,000 of additional funds on these TDRs as of December 31, 2014. At December 31, 2014, $1,307,000 of PNCI loans were TDRs and classified as impaired. The Company had no obligations to lend additional funds on these TDRs as of December 31, 2014.

At December 31, 2013, $56,739,000 of Originated loans were TDRs and classified as impaired. The Company had obligations to lend $25,000 of additional funds on these TDRs as of December 31, 2013. At December 31, 2013, $901,000 of PNCI loans were TDRs and classified as impaired. The Company had no obligations to lend additional funds on these TDRs as of December 31, 2013.

At December 31, 2012, $57,223,000 of Originated loans were TDRs and classified as impaired. The Company had obligations to lend $137,000 of additional funds on these TDRs as of December 31, 2012. At December 31, 2012, $950,000 of PNCI loans were TDRs and classified as impaired. The Company had no obligations to lend additional funds on these TDRs as of December 31, 2012.

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The following tables show certain information regarding Troubled Debt Restructurings (TDRs) that occurred during the periods indicated:

	TDR Information for the Year Ended December 31, 2014
	RE Mortgage				Home Equity					Auto Indirect		Other Consum.		C&I			Construction
(dollars in thousands)	Resid.		Comm.		Lines		Loans										Resid.		Comm.		Total
Number		5		7		6		2			—		1		7			1		2		31
Pre-mod outstanding principal balance	$	1,048	$	1,980	$	940	$	100			—	$	147	$	218		$	102	$	219	$	4,754
Post-mod outstanding principal balance	$	1,050	$	1,890	$	967	$	102			—	$	147	$	219		$	85	$	196	$	4,656
Financial impact due to TDR taken as additional provision	$	91	$	22		—	$	(1	)		—	$	66	$	101			—		—	$	279
Number that defaulted during the period		2		2		1		—			—		—		1			—		—		6
Recorded investment of TDRs that defaulted during the period	$	344	$	423	$	20		—			—		—	$	116			—		—	$	903
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions		—		—		—		—			—		—	$	(8	)		—		—	$	(8	)

	TDR Information for the Year Ended December 31, 2013
	RE Mortgage					Home Equity					Auto Indirect		Other Consum.		C&I		Construction
(dollars in thousands)	Resid.			Comm.		Lines		Loans									Resid.		Comm.		Total
Number		9			11		12		2			—		—		8		—		—		42
Pre-mod outstanding principal balance	$	2,173		$	13,145	$	1,546	$	251			—		—	$	274		—		—	$	17,389
Post-mod outstanding principal balance	$	2,177		$	13,146	$	1,557	$	253			—		—	$	275		—		—	$	17,408
Financial impact due to TDR taken as additional provision	$	148		$	27	$	340	$	(1	)		—		—	$	88		—		—	$	602
Number that defaulted during the period		4			8		3		1			—		—		4		1		—		21
Recorded investment of TDRs that defaulted during the period	$	443		$	1,702	$	150	$	15			—		—	$	1,363	$	73		—	$	3,746
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions	$	(3	)	$	7		—		—			—		—	$	3	$	5		—	$	12

Modifications classified as Troubled Debt Restructurings can include one or a combination of the following: rate modifications, term extensions, interest only modifications, either temporary or long-term, payment modifications, and collateral substitutions/additions.

For all new Troubled Debt Restructurings, an impairment analysis is conducted. If the loan is determined to be collateral dependent, any additional amount of impairment will be calculated based on the difference between estimated collectible value and the current carrying balance of the loan. This difference could result in an increased provision and is typically charged off. If the asset is determined not to be collateral dependent, the impairment is measured on the net present value difference between the expected cash flows of the restructured loan and the cash flows which would have been received under the original terms. The effect of this could result in a requirement for additional provision to the reserve. The effect of these required provisions for the period are indicated above.

Typically if a TDR defaults during the period, the loan is then considered collateral dependent and, if it was not already considered collateral dependent, an appropriate provision will be reserved or charge will be taken. The additional provisions required resulting from default of previously modified TDR’s are noted above.

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Note 6 – Foreclosed Assets

A summary of the activity in the balance of foreclosed assets follows (dollars in thousands):

	Year ended December 31, 2014									Year ended December 31, 2013
	Noncovered			Covered			Total			Noncovered			Covered			Total
Beginning balance, net	$	5,588		$	674		$	6,262		$	5,957		$	1,541		$	7,498
Acquisitions		695			—			695			—			—			—
Additions/transfers from loans		5,753			—			5,753			11,224			493			11,717
Dispositions/sales		(7,391	)		(217	)		(7,608	)		(10,992	)		(1,279	)		(12,271	)
Valuation adjustments		(196	)		(12	)		(208	)		(601	)		(81	)		(682	)
Ending balance, net	$	4,449		$	445		$	4,894		$	5,588		$	674		$	6,262
Ending valuation allowance	$	(208	)		—		$	(208	)	$	(414	)		—		$	(414	)
Ending number of foreclosed assets		28			1			29			28			4			32
Proceeds from sale of foreclosed assets	$	9,517		$	245		$	9,762		$	12,483		$	1,427		$	13,910
Gain on sale of foreclosed assets	$	2,125		$	28		$	2,153		$	1,492		$	148		$	1,640

Note 7 - Premises and Equipment

Premises and equipment were comprised of:

	December 31, 2014			December 31, 2013
	(In thousands)
Land & land improvements	$	8,933		$	5,975
Buildings		39,638			30,103
Furniture and equipment		28,446			27,881
		77,017			63,959
Less: Accumulated depreciation		(33,570	)		(32,397	)
		43,447			31,562
Construction in progress		46			50
Total premises and equipment	$	43,493		$	31,612

Depreciation expense for premises and equipment amounted to $4,648,000, $3,635,000, and $3,250,000 in 2014, 2013, and 2012, respectively.

Note 8 – Cash Value of Life Insurance

A summary of the activity in the balance of cash value of life insurance follows (dollars in thousands):

	Year ended December 31,
	2014		2013
Beginning balance	$	52,309	$	50,582
Acquisitions		38,075		—
Increase in cash value of life insurance		1,953		1,727
Ending balance	$	92,337	$	52,309
End of period death benefit	$	165,966	$	95,513
Number of policies owned		189		133
Insurance companies used		14		6
Current and former employees and directors covered		60		36

As of December 31, 2014, the Bank was the owner and beneficiary of 189 life insurance policies, issued by 14 life insurance companies, covering 60 current and former employees and directors. These life insurance policies are recorded on the Company’s financial statements at their reported cash (surrender) values. As a result of current tax law and the nature of these policies, the Bank records any increase in cash value of these policies as nontaxable noninterest income. If the Bank decided to surrender any of the policies prior to the death of the insured, such surrender may result in a tax expense related to the life-to-date cumulative increase in cash value of the policy. If the Bank retains such policies until the death of the insured, the Bank would receive nontaxable proceeds from the insurance company equal to the death benefit of the policies. The Bank has entered into Joint Beneficiary Agreements (JBAs) with certain of the insured that for certain of the policies provide some level of sharing of the death benefit, less the cash surrender value, among the Bank and the beneficiaries of the insured upon the receipt of death benefits. See Note 15 of these consolidated financial statements for additional information on JBAs.

79

Note 9 - Goodwill and Other Intangible Assets

The following table summarizes the Company’s goodwill intangible as of the dates indicated:

(Dollar in Thousands)	December 31, 2014		Additions		Reductions		December 31, 2013
Goodwill	$	63,462	$	47,943		—	$	15,519

The following table summarizes the Company’s core deposit intangibles as of the dates indicated:

(Dollar in Thousands)	December 31, 2014			Additions		Reductions/ Amortization			Fully Depreciated		December 31, 2013
Core deposit intangibles	$	8,074		$	6,614		—			—	$	1,460
Accumulated amortization		(1,023	)		—	$	(446	)		—		(577	)
Core deposit intangibles, net	$	7,051		$	6,614	$	(446	)		—	$	883

The Company recorded additions to CDI of $6,614,000 in conjunction with the North Valley Bancorp acquisition on October 3, 2014, $898,000 in conjunction with the Citizens acquisition on September 23, 2011, and $562,000 in conjunction with the Granite acquisition on May 28, 2010. The following table summarizes the Company’s estimated core deposit intangible amortization (dollars in thousands):

Years Ended	Estimated Core Deposit Intangible Amortization
2015	$	1,157
2016		1,157
2017		1,109
2018		1,044
2019		948
Thereafter	$	1,636

Note 10 - Mortgage Servicing Rights

The following tables summarize the activity in, and the main assumptions we used to determine the fair value of mortgage servicing rights for the periods indicated (dollars in thousands):

	Years ended December 31,
	2014			2013			2012
Balance at beginning of period	$	6,165		$	4,552		$	4,603
Acquisition		1,944			—			—
Originations		570			1,360			1,965
Change in fair value		(1,301	)		253			(2,016	)
Balance at end of period	$	7,378		$	6,165		$	4,552
Contractually specified servicing fees, late fees and ancillary fees earned	$	1,869		$	1,774		$	1,666
Balance of loans serviced at:
Beginning of period	$	680,197		$	666,512		$	598,185
End of period	$	840,288		$	680,197		$	666,512
Weighted-average prepayment speed (CPR)		12.0	%		10.3	%		20.3	%
Weighted-average discount rate		10.0	%		10.0	%		10.0	%

The changes in fair value of MSRs that occurred during 2014 and 2013 were mainly due to changes in principal balances and changes in estimate life of the MSRs.

Note 11 - Indemnification Asset

A summary of the activity in the balance of indemnification asset (liability) included in other assets is follows (in thousands):

	Year ended December 31,
	2014			2013			2012
Beginning balance	$	206		$	1,997		$	4,405
Effect of actual covered losses (recoveries) and increase (decrease) in estimated future covered losses		(869	)		(1,419	)		(245	)
Reimbursable (revenue) expenses incurred		69			(159	)		69
Payments made (received)		245			(213	)		(2,232	)
Ending balance	$	(349	)	$	206		$	1,997

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Note 12 – Other Assets

Other assets were comprised of (in thousands):

	As of December 31,
	2014		2013
Deferred tax asset, net (Note 22)	$	37,706	$	26,781
Prepaid expense		2,034		2,131
Software		1,327		1,318
Advanced compensation		908		1,175
Capital Trusts		1,690		1,238
Miscellaneous other assets		8,070		3,443
Total other assets	$	51,735	$	36,086

Note 13 - Deposits

A summary of the balances of deposits follows (in thousands):

	December 31,
	2014		2013
Noninterest-bearing demand	$	1,083,900	$	789,458
Interest-bearing demand		782,385		533,351
Savings		1,156,126		798,986
Time certificates, $250,000 and over		38,217		31,542
Other time certificates		319,795		257,146
Total deposits	$	3,380,423	$	2,410,483

Certificate of deposit balances of $5,000,000 and $5,000,000 from the State of California were included in time certificates, $250,000 and over, at December 31, 2014 and 2013, respectively. The Bank participates in a deposit program offered by the State of California whereby the State may make deposits at the Bank’s request subject to collateral and credit worthiness constraints. The negotiated rates on these State deposits are generally more favorable than other wholesale funding sources available to the Bank. Overdrawn deposit balances of $1,216,000 and $1,212,000 were classified as consumer loans at December 31, 2014 and 2013, respectively.

At December 31, 2014, the scheduled maturities of time deposits were as follows (in thousands):

	Scheduled Maturities
2015	$	282,629
2016		46,606
2017		17,017
2018		6,241
2019		5,516
Thereafter		3
Total	$	358,012

Note 14 – Reserve for Unfunded Commitments

The following tables summarize the activity in reserve for unfunded commitments for the periods indicated (dollars in thousands):

	Years ended December 31,
	2014			2013			2012
Balance at beginning of period	$	2,415		$	3,615		$	2,740
Acquisitions		125			—			—
Provision for losses – Unfunded commitments		(395	)		(1,200	)		875
Balance at end of period	$	2,145		$	2,415		$	3,615

Note 15 – Other Liabilities

Other liabilities were comprised of (in thousands):

	December 31,
	2014		2013
Deferred compensation	$	7,408	$	7,357
Pension liability		26,798		14,634
Joint beneficiary agreements		2,728		2,623
Miscellaneous other liabilities		12,258		7,097
Total other liabilities	$	49,192	$	31,711

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Note 16 - Other Borrowings

A summary of the balances of other borrowings follows:

	December 31,
	2014		2013
	(in thousands)
Other collateralized borrowings, fixed rate, as of December 31, 2014 of 0.05%, payable on January 2, 2014	$	9,276	$	6,335
Total other borrowings	$	9,276	$	6,335

The Company did not enter into any other borrowings or repurchase agreements during 2014 or 2013.

The Company had $9,276,000 and $6,335,000 of other collateralized borrowings at December 31, 2014 and 2013, respectively. Other collateralized borrowings are generally overnight maturity borrowings from non-financial institutions that are collateralized by securities owned by the Company. As of December 31, 2014, the Company has pledged as collateral and sold under agreements to repurchase investment securities with fair value of $29,298,000 under these other collateralized borrowings.

The Company maintains a collateralized line of credit with the Federal Home Loan Bank of San Francisco. Based on the FHLB stock requirements at December 31, 2014, this line provided for maximum borrowings of $865,466,000 of which none was outstanding, leaving $865,466,000 available. As of December 31, 2014, the Company had designated investment securities with a fair value of $108,917,000 and loans totaling $1,217,944,000 as potential collateral under this collateralized line of credit with the FHLB.

The Company maintains a collateralized line of credit with the Federal Reserve Bank of San Francisco. As of December 31, 2014, this line provided for maximum borrowings of $138,545,000 of which none was outstanding, leaving $138,545,000 available. As of December 31, 2014, the Company has designated investment securities with fair value of $451,000 and loans totaling $200,282,000 as potential collateral under this collateralized line of credit with the FRB.

The Company has available unused correspondent banking lines of credit from commercial banks totaling $15,000,000 for federal funds transactions at December 31, 2014.

Note 17 – Junior Subordinated Debt

On July 31, 2003, the Company formed a subsidiary business trust, TriCo Capital Trust I, to issue trust preferred securities. Concurrently with the issuance of the trust preferred securities, the trust issued 619 shares of common stock to the Company for $1,000 per share or an aggregate of $619,000. In addition, the Company issued a junior subordinated debenture to the trust in the amount of $20,619,000. The terms of the junior subordinated debenture are materially consistent with the terms of the trust preferred securities issued by TriCo Capital Trust I. Also on July 31, 2003, TriCo Capital Trust I completed an offering of 20,000 shares of cumulative trust preferred securities for cash in an aggregate amount of $20,000,000. The trust preferred securities are mandatorily redeemable upon maturity on October 7, 2033 with an interest rate that resets quarterly at three-month LIBOR plus 3.05%. TriCo Capital Trust I has the right to redeem the trust preferred securities on or after October 7, 2008. The trust preferred securities were issued through an underwriting syndicate to which the Company paid underwriting fees of $7.50 per trust preferred security or an aggregate of $150,000. The net proceeds of $19,850,000 were used to finance the opening of new branches, improve bank services and technology, repurchase shares of the Company’s common stock under its repurchase plan and increase the Company’s capital.

On June 22, 2004, the Company formed a second subsidiary business trust, TriCo Capital Trust II, to issue trust preferred securities. Concurrently with the issuance of the trust preferred securities, the trust issued 619 shares of common stock to the Company for $1,000 per share or an aggregate of $619,000. In addition, the Company issued a junior subordinated debenture to the trust in the amount of $20,619,000. The terms of the junior subordinated debenture are materially consistent with the terms of the trust preferred securities issued by TriCo Capital Trust II. Also on June 22, 2004, TriCo Capital Trust II completed an offering of 20,000 shares of cumulative trust preferred securities for cash in an aggregate amount of $20,000,000. The trust preferred securities are mandatorily redeemable upon maturity on July 23, 2034 with an interest rate that resets quarterly at three-month LIBOR plus 2.55%. TriCo Capital Trust II has the right to redeem the trust preferred securities on or after July 23, 2009. The trust preferred securities were issued through an underwriting syndicate to which the Company paid underwriting fees of $2.50 per trust preferred security or an aggregate of $50,000. The net proceeds of $19,950,000 were used to finance the opening of new branches, improve bank services and technology, repurchase shares of the Company’s common stock under its repurchase plan and increase the Company’s capital.

As a result of the Company’s acquisition of North Valley Bancorp on October 3, 2014, the Company assumed the junior subordinated debentures issued by North Valley Bancorp to North Valley Capital Trusts II, III & IV with face amounts of $6,186,000, $5,155,000 and $10,310,000, respectively. Also, as a result of the North Valley Bancorp acquisition, the Company acquired common stock interests in North Valley Capital Trusts II, III and IV with face valley of $186,000, $155,000, and $310,000, respectively. At the acquisition date of October 3, 2014, the junior subordinated debentures associated with North Valley Capital Trust II, III and IV were recorded on the Company’s books at their fair values of $5,006,000, $3,918,000, and $6,063,000, respectively. The related fair value discounts to face value of these debentures will be amortized over the remaining time to maturity for each of these debentures using the effective interest method. Similar, and proportional, discounts were applied to the acquired common stock interest in North Valley Capital Trusts II, III and IV, and these discounts will be proportionally amortized over the remaining time to maturity for each related debenture.

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TriCo Capital Trusts I and II, and North Valley Capital Trusts II, III and IV are collectively referred to as the Capital Trusts. The recorded book values of the junior subordinated debentures issued by the Capital Trusts are reflected as junior subordinated debt in the Company’s consolidated balance sheets. The common stock issued by the Capital Trusts and owned by the Company is recorded in other assets in the Company’s consolidated balance sheets. The recorded book value of the debentures issued by the Capital Trusts, less the recorded book value of the common stock of the Capital Trusts owned by the Company, continues to qualify as Tier 1 or Tier 2 capital under interim guidance issued by the Board of Governors of the Federal Reserve System.

The following table summarizes the terms and recorded balance of each subordinated debenture as of the date indicated (dollars in thousands):

Subordinated Debt Series	Maturity Date		Face Value		Coupon Rate (Variable) 3 mo. LIBOR +			As of December 31, 2014
								Current Coupon Rate			Recorded Book Value
TriCo Cap Trust I		10/7/2033	$	20,619		3.05	%		3.28	%	$	20,619
TriCo Cap Trust II		7/23/2034		20,619		2.55	%		2.78	%		20,619
North Valley Trust II		4/24/2033		6,186		3.25	%		3.48	%		5,015
North Valley Trust III		4/24/2034		5,155		2.80	%		3.03	%		3,927
North Valley Trust IV		3/15/2036		10,310		1.33	%		1.57	%		6,092
			$	62,889							$	56,272

Note 18 - Commitments and Contingencies

Restricted Cash Balances— Reserves (in the form of deposits with the San Francisco Federal Reserve Bank) of $57,616,000 and $38,359,000 were maintained to satisfy Federal regulatory requirements at December 31, 2014 and 2013. These reserves are included in cash and due from banks in the accompanying consolidated balance sheets.

Lease Commitments— The Company leases 53 sites under non-cancelable operating leases. The leases contain various provisions for increases in rental rates, based either on changes in the published Consumer Price Index or a predetermined escalation schedule. Substantially all of the leases provide the Company with the option to extend the lease term one or more times following expiration of the initial term. The Company currently does not have any capital leases.

At December 31, 2014, future minimum commitments under non-cancelable operating leases with initial or remaining terms of one year or more are as follows:

	Operating Leases
	(in thousands)
2015	$	3,419
2016		2,510
2017		1,856
2018		1,323
2019		859
Thereafter		1,180
Future minimum lease payments	$	11,147

Rent expense under operating leases was $4,786,000 in 2014, $4,300,000 in 2013, and $4,332,000 in 2012. Rent expense was offset by rent income of $225,000 in 2014, $216,000 in 2013, and $138,000 in 2012.

Financial Instruments with Off-Balance-Sheet Risk— The Company is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit, standby letters of credit, and deposit account overdraft privilege. Those instruments involve, to varying degrees, elements of risk in excess of the amount recognized in the balance sheet. The contract amounts of those instruments reflect the extent of involvement the Company has in particular classes of financial instruments.

The Company’s exposure to loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and standby letters of credit written is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. The Company’s exposure to loss in the event of nonperformance by the other party to the financial instrument for deposit account overdraft privilege is represented by the overdraft privilege amount disclosed to the deposit account holder.

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The following table presents a summary of the Bank’s commitments and contingent liabilities:

(in thousands)	December 31, 2014		December 31, 2013
Financial instruments whose amounts represent risk:
Commitments to extend credit:
Commercial loans	$	177,557	$	136,986
Consumer loans		392,705		360,194
Real estate mortgage loans		36,139		35,309
Real estate construction loans		49,774		22,897
Standby letters of credit		17,531		2,601
Deposit account overdraft privilege		101,060		68,932

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates of one year or less or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s credit worthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on Management’s credit evaluation of the customer. Collateral held varies, but may include accounts receivable, inventory, property, plant and equipment, residential properties, and income-producing commercial properties.

Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support private borrowing arrangements. Most standby letters of credit are issued for one year or less. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. Collateral requirements vary, but in general follow the requirements for other loan facilities.

Deposit account overdraft privilege amount represents the unused overdraft privilege balance available to the Company’s deposit account holders who have deposit accounts covered by an overdraft privilege. The Company has established an overdraft privilege for certain of its deposit account products whereby all holders of such accounts who bring their accounts to a positive balance at least once every thirty days receive the overdraft privilege. The overdraft privilege allows depositors to overdraft their deposit account up to a predetermined level. The predetermined overdraft limit is set by the Company based on account type.

Legal Proceedings— The Bank owns 13,396 shares of Class B common stock of Visa Inc. which are convertible into Class A common stock at a conversion ratio of 0.4121 per Class A share. As of December 31, 2014, the value of the Class A shares was $262.20 per share. Utilizing the conversion ratio, the value of unredeemed Class A equivalent shares owned by the Bank was $1,447,000 as of December 31, 2014, and has not been reflected in the accompanying financial statements. The shares of Visa Class B common stock are restricted and may not be transferred. Visa Member Banks are required to fund an escrow account to cover settlements, resolution of pending litigation and related claims. If the funds in the escrow account are insufficient to settle all the covered litigation, Visa may sell additional Class A shares, use the proceeds to settle litigation, and further reduce the conversion ratio. If funds remain in the escrow account after all litigation is settled, the Class B conversion ratio will be increased to reflect that surplus.

On January 24, 2014, a putative shareholder class action lawsuit was filed against TriCo, North Valley Bancorp and certain other defendants in connection with TriCo entering into the merger agreement with North Valley Bancorp. The lawsuit, which was filed in the Shasta County, California Superior Court, alleges that the members of the North Valley Bancorp board of directors breached their fiduciary duties to North Valley Bancorp shareholders by approving the proposed merger for inadequate consideration; approving the transaction in order receive benefits not equally shared by other North Valley Bancorp shareholders; entering into the merger agreement containing preclusive deal protection devices; and failing to take steps to maximize the value to be paid to the North Valley Bancorp shareholders. The lawsuit alleges claims against TriCo for aiding and abetting these alleged breaches of fiduciary duties. The plaintiff seeks, among other things, declaratory and injunctive relief concerning the alleged breaches of fiduciary duties injunctive relief prohibiting consummation of the merger, rescission, attorneys’ of the merger agreement, fees and costs, and other and further relief. On July 31, 2014 the defendants entered into a memorandum of understanding with the plaintiffs regarding the settlement of this lawsuit. In connection with the settlement contemplated by the memorandum of understanding and in consideration for the full settlement and release of all claims, TriCo and North Valley Bancorp agreed to make certain additional disclosures related to the proposed merger, which are contained in a Current Report on Form 8-K filed by each of the companies. The memorandum of understanding contemplates that the parties will negotiate in good faith and use their reasonable best efforts to enter into a stipulation of settlement. The stipulation of settlement will be subject to customary conditions, including court approval following notice to North Valley Bancorp’s shareholders. In the event that the parties enter into a stipulation of settlement, a hearing will be scheduled at which the court will consider the settlement. There can be no assurance that the parties will ultimately enter into a stipulation of settlement or that the court will approve the settlement even if the parties were to enter into such stipulation. In such event, the proposed settlement as contemplated by the memorandum of understanding may be terminated.

On September 15, 2014, a former Personal Banker at one of the Bank’s in-store branches filed a Class Action Complaint against the Bank in Butte County Superior Court, alleging causes of action related to the observance of meal periods. Plaintiff seeks to represent a class of “current and former hourly-paid or non-exempt ‘personal bankers’, or employees with the same or similar job duties, employed by Defendants within the State of California during the preceding four years.” The Bank filed an Answer to the Complaint on November 6, 2014, denies the charges, and the Bank intends to vigorously defend the lawsuit against class certification and liability.

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On January 20, 2015, a current Personal Banker at one of the Bank’s in-store branches filed a First Amended Complaint against Tri Counties Bank and TriCo Bancshares, dba Tri Counties Bank, in Sacramento County Superior Court, alleging causes of action related to wage statement violations. Plaintiff seeks to represent a class of current and former exempt and non-exempt employees who worked for the Bank “during the time period beginning October 18, 2013 through the date of the filing of this action”. The Company and the Bank have not yet responded to the First Amended Complaint, deny the charges, and intend to vigorously defend the lawsuit against class certification and liability.

Neither the Company nor its subsidiaries, are party to any other material pending legal proceeding, nor is their property the subject of any material pending legal proceeding, except routine legal proceedings arising in the ordinary course of their business. None of these proceedings is expected to have a material adverse impact upon the Company’s business, consolidated financial position or results of operations.

Other Commitments and Contingencies—The Company has entered into employment agreements or change of control agreements with certain officers of the Company providing severance payments and accelerated vesting of benefits under supplemental retirement agreements to the officers in the event of a change in control of the Company and termination for other than cause or after a substantial and material change in the officer’s title, compensation or responsibilities.

Mortgage loans sold to investors may be sold with servicing rights retained, with only the standard legal representations and warranties regarding recourse to the Bank. Management believes that any liabilities that may result from such recourse provisions are not significant.

Note 19 – Shareholders’ Equity

Dividends Paid

The Bank paid to the Company cash dividends in the aggregate amounts of $8,270,000, $8,175,000, and $8,522,000 in 2014, 2013, and 2012, respectively. The Bank is regulated by the Federal Deposit Insurance Corporation (FDIC) and the State of California Department of Business Oversight. Absent approval from the Commissioner of Department of Business Oversight, California banking laws generally limit the Bank’s ability to pay dividends to the lesser of (1) retained earnings or (2) net income for the last three fiscal years, less cash distributions paid during such period. Under this law, at December 31, 2014, the Bank may pay dividends of $52,798,000.

Shareholders’ Rights Plan

On June 25, 2001, the Company announced that its Board of Directors adopted and entered into a Shareholder Rights Agreement designed to protect and maximize shareholder value and to assist the Board of Directors in ensuring fair and equitable benefit to all shareholders in the event of a hostile bid to acquire the Company. The Company adopted this Rights Agreement to protect shareholders from coercive or otherwise unfair takeover tactics. In general terms, the Rights Plan would have imposed a significant penalty upon any person or group that acquired 15% or more of the Company’s outstanding common stock without approval of the Company’s Board of Directors.

On June 4, 2014, the Company entered into an amendment to its Rights Agreement that accelerated the expiration of the Rights from July 10, 2021 to July 1, 2014 and had the effect of terminating the Rights Agreement as of that date. At the time of the termination, all Rights distributed to holders of the Company’s common stock pursuant to the Rights Agreement expired.

Stock Repurchase Plan

On August 21, 2007, the Board of Directors adopted a plan to repurchase, as conditions warrant, up to 500,000 shares of the Company’s common stock on the open market. The timing of purchases and the exact number of shares to be purchased will depend on market conditions. The 500,000 shares authorized for repurchase under this stock repurchase plan represented approximately 3.2% of the Company’s 15,814,662 outstanding common shares as of August 21, 2007. This stock repurchase plan has no expiration date. As of December 31, 2013, the Company had repurchased 166,600 shares under this plan.

Stock Repurchased Under Equity Compensation Plans

During the years ended December 31, 2014, 2013, and 2012, employees tendered 103,268, 172,941, and 14,120, respectively, of the Company’s common stock with market value of $2,551,000, $3,490,000, and $224,000, respectively, in lieu of cash to exercise options to purchase shares of the Company’s stock and to pay income taxes related to such exercises as permitted by the Company’s shareholder-approved equity compensation plans. The tendered shares were retired. The market value of tendered shares is the last market trade price at closing on the day an option is exercised. Stock repurchased under equity incentive plans are not counted in the total of stock repurchased under the stock repurchase plan announced August 21, 2007.

Note 20 - Stock Options and Other Equity-Based Incentive Instruments

In March 2009, the Company’s Board of Directors adopted the TriCo Bancshares 2009 Equity Incentive Plan (2009 Plan) covering officers, employees, directors of, and consultants to, the Company. The 2009 Plan was approved by the Company’s shareholders in May 2009. The 2009 Plan allows for the granting of the following types of “stock awards” (Awards): incentive stock options, nonstatutory stock options, performance awards, restricted stock, restricted stock unit (RSU) awards and stock appreciation rights. RSUs that vest based solely on the grantee remaining in the service of the Company for a certain amount of time, are referred to as “service condition vesting RSUs”. RSUs that vest based on the grantee remaining in the service of the Company for a certain amount of time and a market condition such as the total return of the Company’s common stock versus the total return of an index of bank stocks, are referred to as “market plus service condition vesting RSUs”. In May 2013, the Company’s shareholders approved an amendment to the 2009 Plan increasing the maximum aggregate number of shares of TriCo’s common stock which may be issued pursuant to or subject to Awards from 650,000 to 1,650,000. The number of shares available for issuance under the 2009 Plan is reduced by: (i) one share for each share of common stock issued pursuant to a stock option or a

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Stock Appreciation Right and (ii) two shares for each share of common stock issued pursuant to a Performance Award, a Restricted Stock Award or a Restricted Stock Unit Award. When Awards made under the 2009 Plan expire or are forfeited or cancelled, the underlying shares will become available for future Awards under the 2009 Plan. To the extent that a share of common stock pursuant to an Award that counted as two shares against the number of shares again becomes available for issuance under the 2009 Plan, the number of shares of common stock available for issuance under the 2009 Plan shall increase by two shares. Shares awarded and delivered under the 2009 Plan may be authorized but unissued, or reacquired shares. As of December 31, 2014, 706,000 options for the purchase of common shares, and 46,286 restricted stock units were outstanding, and 822,428 shares remain available for issuance, under the 2009 Plan.

In May 2001, the Company adopted the TriCo Bancshares 2001 Stock Option Plan (2001 Plan) covering officers, employees, directors of, and consultants to, the Company. Under the 2001 Plan, the option exercise price cannot be less than the fair market value of the Common Stock at the date of grant except in the case of substitute options. Options for the 2001 Plan expire on the tenth anniversary of the grant date. Vesting schedules under the 2001 Plan are determined individually for each grant. As of December 31, 2014, 396,850 options for the purchase of common shares were outstanding under the 2001 Plan. As of May 2009, as a result of the shareholder approval of the 2009 Plan, no new options may be granted under the 2001 Plan.

Stock option activity is summarized in the following table for the dates indicated:

	Number of Shares			Option Price per Share					Weighted Average Exercise Price
Outstanding at December 31, 2013		1,246,370		$	12.63	to	$	25.91	$	18.04
Options granted		22,500		$	23.21	to	$	23.21	$	23.21
Options exercised		(166,020	)	$	14.54	to	$	20.58	$	17.32
Options forfeited		—			—	to		—		-
Outstanding at September 30, 2014		1,102,850		$	12.63	to	$	25.91	$	18.25

The following table shows the number, weighted-average exercise price, intrinsic value, and weighted average remaining contractual life of options exercisable, options not yet exercisable and total options outstanding as of December 31, 2014:

	Currently Exercisable		Currently Not Exercisable		Total Outstanding
Number of options		818,350		284,500		1,102,850
Weighted average exercise price	$	18.62	$	17.19	$	18.25
Intrinsic value (in thousands)	$	5,007	$	2,136	$	7,143
Weighted average remaining contractual term (yrs.)		4.5		7.6		5.3

The 284,500 options that are currently not exercisable as of December 31, 2014 are expected to vest, on a weighted-average basis, over the next 2.6 years, and the Company is expected to recognize $1,783,000 of pre-tax compensation costs related to these options as they vest. The Company did not modify any option grants during 2013 or 2014.

The following table shows the total intrinsic value of options exercised, the total fair value of options vested, total compensation costs for options recognized in income, and total tax benefit recognized in income related to compensation costs for options during the periods indicated:

	Years Ended December 31,
	2014		2013		2012
Intrinsic value of options exercised	$	1,209,000	$	1,777,000	$	138,000
Fair value of options that vested	$	965,000	$	1,150,000	$	1,083,000
Total compensation costs for options recognized in income	$	965,000	$	1,150,000	$	1,083,000
Total tax benefit recognized in income related to compensation costs for options	$	378,000	$	484,000	$	455,000
Weighted average fair value of grants (per option)	$	8.17	$	8.91	$	6.63

The fair value of the Company’s stock option grants is estimated on the measurement date, which, for the Company, is the date of grant. The fair value of stock options is estimated using the Black-Scholes option-pricing model. The Company estimated expected market price volatility and expected term of the options based on historical data and other factors. The weighted-average assumptions used to determine the fair value of options granted are detailed in the table below:

	Years Ended December 31,
	2014			2013			2012
Assumptions used to value option grants:
Average expected terms (years)		6.3			7.0			8.8
Volatility		42.1	%		56.2	%		51.5	%
Annual rate of dividends		1.90	%		1.87	%		2.36	%
Discount rate		1.69	%		1.26	%		1.49	%

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Restricted stock unit (RSU) activity is summarized in the following table for the dates indicated:

	Service Condition Vesting RSUs				Market Plus Service Condition Vesting RSUs
	Number of RSUs		Weighted Average Fair Value on Date of Grant		Number of RSUs		Weighted Average Fair Value on Date of Grant
Outstanding at December 31, 2013		—		—		—		—
RSUs granted		30,642	$	22.54		15,366	$	21.39
RSUs added through dividend credits		278				—
RSUs released		—				—
RSUs forfeited/expired		—				—
Outstanding at December 31, 2014		30,920				15,366

The 30,642 of service condition vesting RSUs granted during 2014 include a feature whereby each RSU outstanding is credited with a dividend amount equal to any common stock cash dividend declared and paid, and the credited amount is divided by the closing price of the Company’s stock on the dividend payable date to arrive at an additional amount of RSUs outstanding under the original grant. The 30,920 of service condition vesting RSUs that are currently outstanding as of December 31, 2014 are expected to vest, and be released, on a weighted-average basis, over the next 2.8 years. The Company is expected to recognize $566,000 of pre-tax compensation costs related to these service condition vesting RSUs between December 31, 2014 and their vesting dates. During the three months ended December 31, 2014, the Company modified 13,749 service condition vesting RSUs that were granted on August 11, 2014 such that their vesting schedule was changed from 100% vesting on August 11, 2018 to 25% vesting on each of August 11, 2015, 2016, 2017 and 2018.

The 15,366 of market plus service condition vesting RSUs that are currently outstanding as of December 31, 2014 are expected to vest, and be released, on a weighted-average basis, over the next 2.6 years. The Company is expected to recognize $286,000 of pre-tax compensation costs related to these RSUs between December 31, 2014 and their vesting dates. As of December 31, 2014, the number of market plus service condition vesting RSUs outstanding that will actually vest, and be released, may be reduced to zero or increased to 23,049 depending on the total return of the Company’s common stock versus the total return of an index of bank stocks from the grant date to the vesting date. The Company did not modify any market plus service condition vesting RSUs during 2014.

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Note 21 - Noninterest Income and Expense

The components of other noninterest income were as follows (in thousands):	Years Ended December 31,
	2014			2013			2012
Service charges on deposit accounts	$	11,811		$	12,716		$	14,290
ATM and interchange fees		9,651			8,370			7,762
Other service fees		2,206			2,144			2,223
Mortgage banking service fees		1,869			1,774			1,666
Change in value of mortgage servicing rights		(1,301	)		253			(2,016	)
Total service charges and fees		24,236			25,257			23,925
Gain on sale of loans		2,032			5,602			6,810
Commissions on sale of non-deposit investment products		2,995			2,983			3,209
Increase in cash value of life insurance		1,953			1,727			1,820
Change in indemnification asset		(856	)		(1,649	)		(286	)
Gain on sale of foreclosed assets		2,153			1,640			786
Sale of customer checks		450			377			346
Lease brokerage income		504			337			276
Gain (loss) on disposal of fixed assets		49			(39	)		(420	)
Commission rebates		—			—			(56	)
Gain on life insurance death benefit		—			—			675
Other		1,000			594			895
Total other noninterest income		10,280			11,572			14,055
Total noninterest income	$	34,516		$	36,829		$	37,980

Mortgage loan servicing fees, net of change in fair value of mortgage loan servicing rights, totaling $568,000, $2,027,000, and ($350,000) were recorded in service charges and fees noninterest income for the years ended December 31, 2014, 2013, and 2012, respectively.

The components of noninterest expense were as follows (in thousands):

	Years Ended December 31,
	2014			2013			2012
Base salaries, net of deferred loan origination costs	$	39,342		$	34,404		$	33,093
Incentive compensation		5,068			4,694			5,138
Benefits and other compensation costs		13,134			12,838			11,721
Total salaries and benefits expense		57,544			51,936			49,952
Occupancy		8,203			7,405			7,263
Equipment		4,514			4,162			4,444
Data processing and software		6,512			4,844			4,793
Assessments		2,107			2,248			2,393
ATM network charges		2,996			2,480			2,390
Advertising		2,413			1,981			2,876
Professional fees		3,888			2,707			2,879
Telecommunications		2,870			2,449			2,250
Postage		949			786			920
Courier service		1,055			988			1,013
Foreclosed assets expense		528			514			1,474
Intangible amortization		446			209			209
Operational losses		764			618			787
Provision for foreclosed asset losses		208			682			1,728
Change in reserve for unfunded commitments		(395	)		(1,200	)		875
Legal settlement		—			339			2,090
Merger expense		4,858			312			—
Other		10,919			10,144			9,662
Total other noninterest expense		52,835			41,668			48,046
Total noninterest expense	$	110,379		$	93,604		$	97,998
Merger expense:
Incentive compensation	$	1,174			—			—
Benefits and other compensation costs		94			—			—
Data processing and software		475			—			—
Professional fees		2,390		$	312			—
Other		725			—			—
Total merger expense	$	4,858		$	312			—

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Note 22 - Income Taxes

The components of consolidated income tax expense are as follows:

	2014			2013		2012
	(in thousands)
Current tax expense
Federal	$	14,485		$	11,618	$	9,895
State		5,016			4,261		3,425
		19,501			15,879		13,320
Deferred tax expense (benefit)
Federal		(794	)		1,976		(235	)
State		(199	)		550		(148	)
		(993	)		2,526		(383	)
Total tax expense	$	18,508		$	18,405	$	12,937

A deferred tax asset or liability is recognized for the tax consequences of temporary differences in the recognition of revenue and expense for financial and tax reporting purposes. The net change during the year in the deferred tax asset or liability results in a deferred tax expense or benefit.

Taxes recorded directly to shareholders’ equity are not included in the preceding table. These taxes (benefits) relating to changes in unfunded status of the supplemental retirement plans amounting to $(2,984,000) in 2014, $1,269,000 in 2013, and $(2,000) in 2012, taxes (benefits) related to unrealized gains and losses on available-for-sale investment securities amounting to $(68,000) in 2014, $(1,780,000) in 2013, and $(880,000) in 2012, taxes (benefits) related to employee stock options of $97,000 in 2014, $138,000 in 2013, and $13,000 in 2012, and taxes (benefits) related to changes in joint beneficiary agreement liability of $0 in 2014, $0 in 2013, and $64,000 in 2012, were recorded directly to shareholders’ equity.

The temporary differences, tax effected, which give rise to the Company’s net deferred tax asset recorded in other assets are as follows as of December 31 for the years indicated:

	2014			2013
	(in thousands)
Deferred tax assets:
Allowance for losses	$	16,284		$	17,096
Deferred compensation		3,115			3,093
Accrued pension liability		7,925			5,817
Accrued bonus		1,149			1,037
Other accrued expenses		124			—
Unfunded status of the supplemental retirement plans		3,315			331
State taxes		1,713			1,390
Stock option expense		2,534			2,225
Nonaccrual interest		2,714			1,840
OREO write downs		198			331
Acquisition cost basis		6,017			699
Tax credits		490			—
Net operating loss carryforwards		7,128			—
Other		625			—
Total deferred tax assets		53,331			33,859
Deferred tax liabilities:
Securities income		(1,362	)		(986	)
Unrealized gain on securities		(1,699	)		(1,767	)
Depreciation		(3,072	)		(392	)
Merger related fixed asset valuations		(54	)		(379	)
Securities accretion		(287	)		(256	)
Mortgage servicing rights valuation		(2,977	)		(2,416	)
Indemnification asset		147			(87	)
Core deposit intangible		(2,802	)		(193	)
Junior subordinated debt		(2,782	)		—
Prepaid expenses and other		(737	)		(602	)
Total deferred tax liability		(15,625	)		(7,078	)
Net deferred tax asset	$	37,706		$	26,781

As part of the merger with North Valley, TriCo acquired federal and state net operating loss carryforwards, capital loss carryforwards, and tax credit carryforwards. These tax attribute carryforwards will be subject to provisions of the tax law that limit the use of such losses and credits generated by a company prior to the date certain ownership changes occur. The amount of the Company’s net operating loss carryforwards that would be subject to these limitations as of December 31, 2014 are $13.7 million and $35.2 million for federal and California, respectively. The amount of the Company’s capital loss carryforwards that would be subject to these limitations as of December 31, 2014 are $131,000 and $404,000 for federal and California, respectively. The amount of the Company’s tax credits that would be subject to these limitations as of December 31, 2014 are $69,000 and $2.7 million for federal and California, respectively. Due to the limitation, a significant

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portion of the state tax credits will expire regardless of whether the Company generates future taxable income. As such, the Company has recorded the future benefit of these tax credits at the value which is more likely than not to be realized. These tax loss and tax credit carryforwards expire at various dates beginning in 2015.

The Company believes that a valuation allowance is not needed to reduce the deferred tax assets as it is more likely than not that the results of future operations will generate sufficient taxable income to realize the deferred tax assets, including the tax attribute carryforwards acquired as part of the North Valley merger.

As part of the North Valley merger, TriCo inherited an unrecognized tax benefit for tax positions claimed on prior year tax returns filed by North Valley. The Company had an unrecognized tax benefit of $245,000 as of December 31, 2014, the recognition of which would reduce the Company’s tax expense by $158,000. Management does not expect the unrecognized tax benefit will materially change in the next 12 months. A summary of changes in the Company’s unrecognized tax benefit (including interest and penalties) in 2014 is as follows:

(in thousands)	UTB		Interest/Penalties		Total
As of December 31, 2013		—		—		—
Additions for tax positions for prior years		227		18		245
As of December 31, 2014		227		18		245

During the years ended December 31, 2014 and December 31, 2013, the Company recognized no interest and penalties related to taxes. During the year ended December 31, 2012, the Company recognized interest and penalties related to taxes of $22,000 and $5,000, respectively. The Company files income tax returns in the U.S. federal jurisdiction, and California. With few exceptions, the Company is no longer subject to U.S. federal and state/local income tax examinations by tax authorities for years before 2011 and 2010, respectively.

The provisions for income taxes applicable to income before taxes for the years ended December 31, 2014, 2013 and 2012 differ from amounts computed by applying the statutory Federal income tax rates to income before taxes. The effective tax rate and the statutory federal income tax rate are reconciled as follows:

	Years Ended December 31,
	2014			2013			2012
Federal statutory income tax rate		35.0	%		35.0	%		35.0	%
State income taxes, net of federal tax benefit		7.0			6.8			6.7
Tax-exempt interest on municipal obligations		(0.4	)		(0.4	)		(0.5	)
Tax-exempt life insurance related income		(1.5	)		(1.3	)		(2.0	)
Non-deductible joint beneficiary agreement expense		0.2			0.2			0.3
Non-deductible merger expense		1.0			—			—
Other		0.2			(0.1	)		1.0
Effective Tax Rate		41.5	%		40.2	%		40.5	%

Note 23 - Earnings Per Share

Basic earnings per share represents income available to common shareholders divided by the weighted-average number of common shares outstanding during the period. Diluted earnings per share reflects additional common shares that would have been outstanding if dilutive potential common shares had been issued, as well as any adjustments to income that would result from assumed issuance. Potential common shares that may be issued by the Company relate solely from outstanding stock options, and are determined using the treasury stock method. Earnings per share have been computed based on the following:

	Years ended December 31,
	2014		2013		2012
Net income (in thousands)	$	26,108	$	27,399	$	18,994
(number of shares in thousands)
Average number of common shares outstanding		17,716		16,045		15,988
Effect of dilutive stock options		207		152		64
Average number of common shares outstanding used to calculate diluted earnings per share		17,923		16,197		16,052

Based on an average of quarterly computations, there were 95,600, 407,985 and 967,120 options and restricted stock units excluded from the computation of annual diluted earnings per share for the years ended December 31, 2014, 2013 and 2012, respectively, because the effect of these options and restricted stock units were antidilutive.

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Note 24 – Comprehensive Income

Accounting principles generally require that recognized revenue, expenses, gains and losses be included in net income. Although certain changes in assets and liabilities, such as unrealized gains and losses on available-for-sale securities, are reported as a separate component of the equity section of the balance sheet, such items, along with net income, are components of comprehensive income. The components of other comprehensive income and related tax effects are as follows:

	Years Ended December 31,
	2014			2013			2012
	(in thousands)
Unrealized holding (losses) gains on available for sale securities before reclassifications	$	(162	)	$	(4,232	)	$	(2,096	)
Amounts reclassified out of accumulated other comprehensive income		—			—			—
Unrealized holding (losses) gains on available for sale securities after reclassifications		(162	)		(4,232	)		(2,096	)
Tax effect		68			1,780			880
Unrealized holding (losses) gains on available for sale securities, net of tax		(94	)		(2,452	)		(1,216	)
Change in unfunded status of the supplemental retirement plans before reclassifications		(7,253	)		2,575			(445	)
Amounts reclassified out of accumulated other comprehensive income:
Amortization of prior service cost		138			153			153
Amortization of actuarial losses		17			291			288
Total amounts reclassified out of accumulated other comprehensive income		155			444			441
Change in unfunded status of the supplemental retirement plans after reclassifications		(7,098	)		3,019			(4	)
Tax effect		2,984			(1,269	)		2
Change in unfunded status of the supplemental retirement plans, net of tax		(4,114	)		1,750			(2	)
Change in joint beneficiary agreement liability before reclassifications		148			400			(370	)
Amounts reclassified out of accumulated other comprehensive income		—			—			—
Change in joint beneficiary agreement liability after reclassifications		148			400			(370	)
Tax effect		—			—			(64	)
Change in joint beneficiary agreement liability, net of tax		148			400			(434	)
Total other comprehensive (loss) income	$	(4,060	)	$	(302	)	$	(1,652	)

The components of accumulated other comprehensive income, included in shareholders’ equity, are as follows:

	December 31,
	2014			2013
	(in thousands)
Net unrealized gains on available for sale securities	$	4,040		$	4,202
Tax effect		(1,699	)		(1,767	)
Unrealized holding gains on available for sale securities, net of tax		2,341			2,435
Unfunded status of the supplemental retirement plans		(7,885	)		(787	)
Tax effect		3,315			331
Unfunded status of the supplemental retirement plans, net of tax		(4,570	)		(456	)
Joint beneficiary agreement liability		26			(122	)
Tax effect		—			—
Joint beneficiary agreement liability, net of tax		26			(122	)
Accumulated other comprehensive income	$	(2,203	)	$	1,857

Note 25 – Retirement Plans

401(k) Plan

The Company sponsors a 401(k) Plan whereby substantially all employees age 21 and over with 90 days of service may participate. Participants may contribute a portion of their compensation subject to certain limits based on federal tax laws. During 2014, 2013, and 2012 the Company did not contribute to the 401(k) Plan. The Company did not incur any material expenses attributable to the 401(k) Plan during 2014, 2013, and 2012.

Employee Stock Ownership Plan

Substantially all employees with at least one year of service are covered by a discretionary employee stock ownership plan (ESOP). Contributions are made to the plan at the discretion of the Board of Directors. Contributions to the plan totaling $1,294,000 in 2014, $1,648,000 in 2013, and $1,229,000 in 2012, are included in salary expense. Company shares owned by the ESOP are paid dividends and included in the calculation of earnings per share exactly as other common shares outstanding.

Deferred Compensation Plans

The Company has deferred compensation plans for certain directors and key executives, which allow certain directors and key executives designated by the Board of Directors of the Company to defer a portion of their compensation. The Company has purchased insurance on the lives of the participants and intends to hold these policies until death as a cost recovery of the Company’s deferred compensation obligations of $7,408,000 and $7,357,000 at December 31, 2014 and 2013, respectively. Earnings credits on deferred balances totaling $551,000 in 2014, $568,000 in 2013, and $599,000 in 2012.

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Supplemental Retirement Plans

The Company has supplemental retirement plans for certain directors and key executives. These plans are non-qualified defined benefit plans and are unsecured and unfunded. The Company has purchased insurance on the lives of the participants and intends to hold these policies until death as a cost recovery of the Company’s retirement obligations. The cash values of the insurance policies purchased to fund the deferred compensation obligations and the supplemental retirement obligations were $92,337,000 and $52,309,000 at December 31, 2014 and 2013, respectively.

The Company recorded in other liabilities the unfunded status of the supplemental retirement plans of $7,885,000 and $787,000 related to the supplemental retirement plans as of December 31, 2014 and 2013, respectively. These amounts represent the amount by which the projected benefit obligations for these retirement plans exceeded the fair value of plan assets plus amounts previously accrued related to the plans. The projected benefit obligation is recorded in other liabilities.

At December 31, 2014 and 2013, the unfunded status of the supplemental retirement plans of $7,885,000 and $787,000 were offset by a reduction of shareholders’ equity accumulated other comprehensive loss of $4,570,000 and $456,000, respectively, representing the after-tax impact of the unfunded status of the supplemental retirement plans, and the related deferred tax asset of $3,315,000 and $331,000, respectively. Amounts recognized as a component of accumulated other comprehensive loss as of year-end that have not been recognized as a component of the combined net period benefit cost of the Company’s defined benefit pension plans are presented in the following table. The Company expects to recognize approximately $823,000 of the net actuarial loss reported in the following table as of December 31, 2014 as a component of net periodic benefit cost during 2015.

	December 31,
(in thousands)	2014			2013
Transition obligation	$	9		$	11
Prior service cost		(173	)		(35	)
Net actuarial loss		8,049			811
Amount included in accumulated other comprehensive loss	$	7,885			787
Deferred tax benefit		(3,315	)		(331	)
Amount included in accumulated other comprehensive loss, net of tax	$	4,570		$	456

Information pertaining to the activity in the supplemental retirement plans, using a measurement date of December 31, is as follows:

	December 31,
	2014			2013
	(in thousands)
Change in benefit obligation:
Benefit obligation at beginning of year	$	(14,634	)	$	(16,345	)
Acquisition		(4,150	)		—
Service cost		(652	)		(742	)
Interest cost		(739	)		(643	)
Actuarial (loss)/gain		(7,254	)		2,573
Benefits paid		631			523
Benefit obligation at end of year	$	(26,798	)	$	(14,634	)
Change in plan assets:
Fair value of plan assets at beginning of year	$	—		$	—
Fair value of plan assets at end of year	$	—		$	—
Funded status	$	(26,798	)	$	(14,634	)
Unrecognized net obligation existing at January 1, 1986		9			11
Unrecognized net actuarial loss		8,049			811
Unrecognized prior service cost		(173	)		(35	)
Accumulated other comprehensive income		(7,885	)		(787	)
Accrued benefit cost	$	(26,798	)	$	(14,634	)
Accumulated benefit obligation	$	(24,739	)	$	(12,954	)

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The following table sets forth the net periodic benefit cost recognized for the supplemental retirement plans:

	Years Ended December 31,
	2014		2013		2012
	(in thousands)
Net pension cost included the following components:
Service cost-benefits earned during the period	$	652	$	743	$	680
Interest cost on projected benefit obligation		739		643		687
Amortization of net obligation at transition		2		2		2
Amortization of prior service cost		138		153		153
Recognized net actuarial loss		16		291		288
Net periodic pension cost	$	1,547	$	1,832	$	1,810

The following table sets forth assumptions used in accounting for the plans:

	Years Ended December 31,
	2014			2013			2012
Discount rate used to calculate benefit obligation		3.65	%		4.85	%		4.00	%
Discount rate used to calculate net periodic pension cost		3.65	%		4.85	%		4.00	%
Average annual increase in executive compensation		2.50	%		2.50	%		2.50	%
Average annual increase in director compensation		2.50	%		2.50	%		2.50	%

The following table sets forth the expected benefit payments to participants and estimated contributions to be made by the Company under the supplemental retirement plans for the years indicated:

Years Ended	Expected Benefit Payments to Participants		Estimated Company Contributions
	(in thousands)
2015	$	1,145	$	1,145
2016		1,036		1,036
2017		1,001		1,001
2018		1,330		1,330
2019		519		519
2020-2024	$	3,719	$	3,719

Note 26 – Related Party Transactions

Certain directors, officers, and companies with which they are associated were customers of, and had banking transactions with, the Company or the Bank in the ordinary course of business.

The following table summarizes the activity in these loans for the periods indicated (in thousands):

Balance December 31, 2012	$	2,368
Advances/new loans		1,154
Removed/payments		(886	)
Balance December 31, 2013	$	2,636
Advances/new loans		2,106
Removed/payments		(1,610	)
Balance December 31, 2014	$	3,132

Director Chrysler is a principal owner and CEO of Modern Building Inc. Modern Building Inc. provided construction services to the Company related to new and existing Bank facilities for aggregate payments of $1,181,000, $4,261,000, and $3,587,000 during 2014, 2013 and 2012, respectively.

Note 27 – Fair Value Measurement

The Company utilizes fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. In estimating fair value, the Company utilizes valuation techniques that are consistent with the market approach, income approach, and/or the cost approach. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability including assumptions about the risk inherent in a particular valuation technique, the effect of a restriction on the sale or use of an asset and the risk of nonperformance. Securities available-for-sale and mortgage servicing rights are recorded at fair value on a recurring basis. Additionally, from time to time, the Company may be required to record at fair value other assets on a nonrecurring basis, such as loans held for sale, loans held for investment and certain other assets. These nonrecurring fair value adjustments typically involve application of lower of cost or market accounting or impairment write-downs of individual assets.

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The Company groups assets and liabilities at fair value in three levels, based on the markets in which the assets and liabilities are traded and the observable nature of the assumptions used to determine fair value. These levels are:

Level 1 -	Valuation is based upon quoted prices for identical instruments traded in active markets.
Level 2 -	Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market.
Level 3 -	Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques.

Securities available for sale - Securities available for sale are recorded at fair value on a recurring basis. Fair value measurement is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security’s credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets and money market funds. Level 2 securities include mortgage-backed securities issued by government sponsored entities, municipal bonds and corporate debt securities. The Company had no securities classified as Level 3 during any of the periods covered in these financial statements.

Loans held for sale – Loans held for sale are carried at the lower of cost or fair value. The fair value of loans held for sale is based on what secondary markets are currently offering for loans with similar characteristics. As such, we classify those loans subjected to nonrecurring fair value adjustments as Level 2.

Impaired originated and PNCI loans – Originated and PNCI loans are not recorded at fair value on a recurring basis. However, from time to time, an originated or PNCI loan is considered impaired and an allowance for loan losses is established. Originated and PNCI loans for which it is probable that payment of interest and principal will not be made in accordance with the contractual terms of the loan agreement are considered impaired. The fair value of an impaired originated or PNCI loan is estimated using one of several methods, including collateral value, fair value of similar debt, enterprise value, liquidation value and discounted cash flows. Those impaired originated and PNCI loans not requiring an allowance represent loans for which the fair value of the expected repayments or collateral exceed the recorded investments in such loans. Impaired originated and PNCI loans where an allowance is established based on the fair value of collateral require classification in the fair value hierarchy. When the fair value of the collateral is based on an observable market price or a current appraised value which uses substantially observable data, the Company records the impaired originated or PNCI loan as nonrecurring Level 2. When an appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value, or the appraised value contains a significant unobservable assumption, such as deviations from comparable sales, and there is no observable market price, the Company records the impaired originated or PNCI loan as nonrecurring Level 3.

Foreclosed assets - Foreclosed assets include assets acquired through, or in lieu of, loan foreclosure. Foreclosed assets are held for sale and are initially recorded at fair value at the date of foreclosure, establishing a new cost basis. Subsequent to foreclosure, management periodically performs valuations and the assets are carried at the lower of carrying amount or fair value less cost to sell. When the fair value of foreclosed assets is based on an observable market price or a current appraised value which uses substantially observable data, the Company records the impaired originated loan as nonrecurring Level 2. When an appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value, or the appraised value contains a significant unobservable assumption, such as deviations from comparable sales, and there is no observable market price, the Company records the foreclosed asset as nonrecurring Level 3. Revenue and expenses from operations and changes in the valuation allowance are included in other noninterest expense.

Mortgage servicing rights - Mortgage servicing rights are carried at fair value. A valuation model, which utilizes a discounted cash flow analysis using a discount rate and prepayment speed assumptions is used in the computation of the fair value measurement. While the prepayment speed assumption is currently quoted for comparable instruments, the discount rate assumption currently requires a significant degree of management judgment and is therefore considered an unobservable input. As such, the Company classifies mortgage servicing rights subjected to recurring fair value adjustments as Level 3. Additional information regarding mortgage servicing rights can be found in Note 10 in the consolidated financial statements at Item 1 of this report.

The table below presents the recorded amount of assets and liabilities measured at fair value on a recurring basis (in thousands):

Fair value at December 31, 2014	Total		Level 1		Level 2		Level 3
Securities available-for-sale:
Obligations of U.S. government corporations and agencies	$	75,120		—	$	75,120		—
Obligations of states and political subdivisions		3,175		—		3,175		—
Corporate debt securities		1,908		—		1,908		—
Marketable equity securities		3,002	$	3,002		—		—
Mortgage servicing rights		7,378		—		—	$	7,378
Total assets measured at fair value	$	90,583	$	3,002	$	80,203	$	7,378

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Fair value at December 31, 2013	Total		Level 1		Level 2		Level 3
Securities available-for-sale:
Obligations of U.S. government corporations and agencies	$	97,143		—	$	97,143		—
Obligations of states and political subdivisions		5,589		—		5,589		—
Corporate debt securities		1,915		—		1,915		—
Mortgage servicing rights		6,165		—		—		6,165
Total assets measured at fair value	$	110,812		—	$	104,647	$	6,165

Transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally corresponds with the Company’s quarterly valuation process. There were no transfers between any levels during 2014 or 2013.

The following table provides a reconciliation of assets and liabilities measured at fair value using significant unobservable inputs (Level 3) on a recurring basis during the years ended December 31, 2014 and 2013. Had there been any transfer into or out of Level 3 during 2014 or 2013, the amount included in the “Transfers into (out of) Level 3” column would represent the beginning balance of an item in the period (interim quarter) during which it was transferred (in thousands):

Year ended December 31,	Beginning Balance		Transfers into (out of) Level 3		Change Included in Earnings			Issuances		Ending Balance
2014: Mortgage servicing rights	$	6,165	$	1,944	$	(1,301	)	$	570	$	7,378
2013: Mortgage servicing rights	$	4,552		—	$	253		$	1,360	$	6,165

The Company’s method for determining the fair value of mortgage servicing rights is described in Note 1. The key unobservable inputs used in determining the fair value of mortgage servicing rights are mortgage prepayment speeds and the discount rate used to discount cash projected cash flows. Generally, any significant increases in the mortgage prepayment speed and discount rate utilized in the fair value measurement of the mortgage servicing rights will result in a negative fair value adjustments (and decrease in the fair value measurement). Conversely, a decrease in the mortgage prepayment speed and discount rate will result in a positive fair value adjustment (and increase in the fair value measurement). Note 10 contains additional information regarding mortgage servicing rights.

The following table presents quantitative information about recurring Level 3 fair value measurements at December 31, 2014:

	Fair Value (in thousands)		Valuation Technique		Unobservable Inputs		Range, Weighted Average
Mortgage Servicing Rights	$	7,378		Discounted cash flow		Constant prepayment rate	5.7%-23.4%, 12.0%
						Discount rate	10.0%-12.0%, 10.0%

The tables below present the recorded amount of assets and liabilities measured at fair value on a nonrecurring basis, as of the dates indicated, that had a write-down or an additional allowance provided during the periods indicated (in thousands):

Year ended December 31, 2014	Total		Level 1		Level 2		Level 3		Total Gains (Losses)
Fair value:
Impaired Originated & PNCI loans	$	2,480		—		—	$	2,480	$	(636	)
Foreclosed assets		2,611		—		—		2,611	$	(137	)
Total assets measured at fair value	$	5,091		—		—	$	5,091	$	(773	)
Year ended December 31, 2013	Total		Level 1		Level 2		Level 3		Total Gains (Losses)
Fair value:
Impaired Originated & PNCI loans	$	20,334		—		—	$	20,334	$	(2,539	)
Foreclosed assets		948		—		—		948		(397	)
Total assets measured at fair value	$	21,282		—		—	$	21,282	$	(2,936	)

The impaired Originated and PNCI loan amount above represents impaired, collateral dependent loans that have been adjusted to fair value. When we identify a collateral dependent loan as impaired, we measure the impairment using the current fair value of the collateral, less selling costs. Depending on the characteristics of a loan, the fair value of collateral is generally estimated by obtaining external appraisals. If we determine that the value of the impaired loan is less than the recorded investment in the loan, we recognize this impairment and adjust the carrying value of the loan to fair value through the allowance for loan and lease losses. The loss represents charge-offs or impairments on collateral dependent loans for fair value adjustments based on the fair value of collateral. The carrying value of loans fully charged-off is zero.

95

The foreclosed assets amount above represents impaired real estate that has been adjusted to fair value. Foreclosed assets represent real estate which the Bank has taken control of in partial or full satisfaction of loans. At the time of foreclosure, other real estate owned is recorded at the lower of the carrying amount of the loan or fair value less costs to sell, which becomes the property’s new basis. Any write-downs based on the asset’s fair value at the date of acquisition are charged to the allowance for loan and lease losses. After foreclosure, management periodically performs valuations such that the real estate is carried at the lower of its new cost basis or fair value, net of estimated costs to sell. Fair value adjustments on other real estate owned are recognized within net loss on real estate owned. The loss represents impairments on non-covered other real estate owned for fair value adjustments based on the fair value of the real estate.

The Company’s property appraisals are primarily based on the sales comparison approach and income approach methodologies, which consider recent sales of comparable properties, including their income generating characteristics, and then make adjustments to reflect the general assumptions that a market participant would make when analyzing the property for purchase. These adjustments may increase or decrease an appraised value and can vary significantly depending on the location, physical characteristics and income producing potential of each property. Additionally, the quality and volume of market information available at the time of the appraisal can vary from period to period and cause significant changes to the nature and magnitude of comparable sale adjustments. Given these variations, comparable sale adjustments are generally not a reliable indicator for how fair value will increase or decrease from period to period. Under certain circumstances, management discounts are applied based on specific characteristics of an individual property.

The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at December 31, 2014:

	Fair Value (in thousands)		Valuation Technique	Unobservable Inputs	Range, Weighted Average
Impaired Originated & PNCI loans	$	2,480	Sales comparison approach	Adjustment for differences between comparable sales	(5.0)%-(42.5)%, (10.1)%
			Income approach	Capitalization rate	9.09%-9.09 %, 9.09%
Foreclosed assets	$	2,611	Sales comparison approach	Adjustment for differences between comparable sales	(5.0)%-(29.4)%, (8.2)%

In addition to the methods and assumptions used to estimate the fair value of each class of financial instrument noted above, the following methods and assumptions were used to estimate the fair value of other classes of financial instruments for which it is practical to estimate the fair value.

Short-term Instruments—Cash and due from banks, fed funds purchased and sold, interest receivable and payable, and short-term borrowings are considered short-term instruments. For these short-term instruments their carrying amount approximates their fair value.

Securities held to maturity – The fair value of securities held to maturity is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security’s credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets and money market funds. Level 2 securities include mortgage-backed securities issued by government sponsored entities, municipal bonds and corporate debt securities. The Company had no securities held to maturity classified as Level 3 during any of the periods covered in these financial statements.

Restricted Equity Securities—It is not practical to determine the fair value of restricted equity securities due to restrictions placed on its transferability.

Originated and PNCI loans - The fair value of variable rate originated and PNCI loans is the current carrying value. The interest rates on these originated and PNCI loans are regularly adjusted to market rates. The fair value of other types of fixed rate originated and PNCI loans is estimated by discounting the future cash flows using current rates at which similar loans would be made to borrowers with similar credit ratings for the same remaining maturities. The allowance for loan losses is a reasonable estimate of the valuation allowance needed to adjust computed fair values for credit quality of certain originated and PNCI loans in the portfolio.

PCI Loans—PCI loans are measured at estimated fair value on the date of acquisition. Carrying value is calculated as the present value of expected cash flows and approximates fair value.

FDIC Indemnification Asset—The fair value of the FDIC indemnification asset is based on the discounted value of expected future cash flows under the loss-share agreement.

Deposit Liabilities - The fair value of demand deposits, savings accounts, and certain money market deposits is the amount payable on demand at the reporting date. These values do not consider the estimated fair value of the Company’s core deposit intangible, which is a significant unrecognized asset of the Company. The fair value of time deposits and other borrowings is based on the discounted value of contractual cash flows.

Other Borrowings - The fair value of other borrowings is calculated based on the discounted value of the contractual cash flows using current rates at which such borrowings can currently be obtained.

96

Junior Subordinated Debentures - The fair value of junior subordinated debentures is estimated using a discounted cash flow model. The future cash flows of these instruments are extended to the next available redemption date or maturity date as appropriate based upon the spreads of recent issuances or quotes from brokers for comparable bank holding companies compared to the contractual spread of each junior subordinated debenture measured at fair value.

Commitments to Extend Credit and Standby Letters of Credit - The fair value of commitments is estimated using the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present credit worthiness of the counter parties. For fixed rate loan commitments, fair value also considers the difference between current levels of interest rates and the committed rates. The fair value of letters of credit is based on fees currently charged for similar agreements or on the estimated cost to terminate them or otherwise settle the obligation with the counter parties at the reporting date.

Fair values for financial instruments are management’s estimates of the values at which the instruments could be exchanged in a transaction between willing parties. These estimates are subjective and may vary significantly from amounts that would be realized in actual transactions. In addition, other significant assets are not considered financial assets including, any mortgage banking operations, deferred tax assets, and premises and equipment. Further, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on the fair value estimates and have not been considered in any of these estimates.

The estimated fair values of financial instruments that are reported at amortized cost in the Corporation’s consolidated balance sheets, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value, were as follows (in thousands):

	December 31, 2014						December 31, 2013
	Carrying Amount			Fair Value			Carrying Amount		Fair Value
Financial assets:
Level 1 inputs:
Cash and due from banks	$	93,150		$	93,150		$	76,915	$	76,915
Cash at Federal Reserve and other banks		517,578			517,578			521,453		521,453
Level 2 inputs:
Securities held to maturity		676,426			688,779			240,504		233,807
Restricted equity securities		16,956			N/A			9,163		N/A
Loans held for sale		3,579			3,579			2,270		2,270
Level 3 inputs:
Loans, net		2,282,524			2,379,155			1,672,007		1,760,274
Indemnification (liability) asset		(349	)		(349	)		206		206
Financial liabilities:
Level 2 inputs:
Deposits		3,380,423			3,380,486			2,410,483		2,411,402
Other borrowings		9,276			9,276			6,335		6,335
Level 3 inputs:
Junior subordinated debt		56,272			45,053			41,238		25,774
	Contract Amount			Fair Value			Contract Amount		Fair Value
Off-balance sheet:
Level 3 inputs:
Commitments	$	656,175		$	6,562		$	555,386	$	5,554
Standby letters of credit		17,531			175			2,601		26
Overdraft privilege commitments		101,060			1,011			68,932		689

97

Note 28 - TriCo Bancshares Condensed Financial Statements (Parent Only)

Condensed Balance Sheets

	December 31,
	2014			2013
	(in thousands)
Assets
Cash and Cash equivalents	$	2,229		$	2,520
Investment in Tri Counties Bank		470,797			288,746
Other assets		1,902			1,280
Total assets	$	474,928		$	292,546
Liabilities and shareholders’ equity
Other liabilities	$	484		$	362
Junior subordinated debt		56,272			41,238
Total liabilities		56,756			41,600
Shareholders’ equity:
Common stock, no par value: authorized 50,000,000 shares; issued and outstanding 22,714,964 and 16,076,662 shares, respectively		244,318			89,356
Retained earnings		176,057			159,733
Accumulated other comprehensive loss, net		(2,203	)		1,857
Total shareholders’ equity		418,172			250,946
Total liabilities and shareholders’ equity	$	474,928		$	292,546

Condensed Statements of Income

	Years ended December 31,
	2014			2013			2012
	(in thousands)
Interest expense	$	(1,403	)	$	(1,247	)	$	(1,325	)
Administration expense		(2,720	)		(862	)		(669	)
Loss before equity in net income of Tri Counties Bank		(4,123	)		(2,109	)		(1,994	)
Equity in net income of Tri Counties Bank:
Distributed		8,270			8,175			8,522
Undistributed		20,720			20,446			11,632
Income tax benefit		1,241			887			834
Net income	$	26,108		$	27,399		$	18,994
Condensed Statements of Comprehensive Income
	Years ended December 31,
	2014			2013			2012
	(in thousands)
Net income	$	26,108		$	27,399		$	18,994
Other comprehensive (loss) income, net of tax:
Unrealized holding (losses) gains on securities arising during the period		(94	)		(2,452	)		(1,216	)
Change in minimum pension liability		(4,114	)		1,750			(2	)
Change in joint beneficiary agreement liability		148			400			(434	)
Other comprehensive (loss) income		(4,060	)		(302	)		(1,652	)
Net income	$	22,048		$	27,097		$	17,342
Condensed Statements of Cash Flows
	Years ended December 31,
	2014			2013			2012
	(in thousands)
Operating activities:
Net income	$	26,108		$	27,399		$	18,994
Adjustments to reconcile net income to net cash provided by operating activities:
Undistributed equity in earnings of Tri Counties Bank		(20,720	)		(20,446	)		(11,632	)
Stock option vesting expense		1,133			1,151			1,083
Stock option excess tax benefits		(225	)		(356	)		(44	)
Net change in other assets and liabilities		671			(1,100	)		(1,089	)
Net cash provided by operating activities		6,967			6,648			7,312
Investing activities: None
Financing activities:
Issuance of common stock through option exercise		616			251			206
Stock option excess tax benefits		225			356			44
Repurchase of common stock		(292	)		(501	)		—
Cash dividends paid — common		(7,807	)		(6,745	)		(5,757	)
Net cash used for financing activities		(7,258	)		(6,639	)		(5,507	)
(decrease) increase in cash and cash equivalents		(291	)		9			1,805
Cash and cash equivalents at beginning of year		2,520			2,511			706
Cash and cash equivalents at end of year	$	2,229		$	2,520		$	2,511

98

Note 29 - Regulatory Matters

The Company is subject to various regulatory capital requirements administered by federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory, and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company must meet specific capital guidelines that involve quantitative measures of the Company’s assets, liabilities and certain off-balance-sheet items as calculated under regulatory accounting practices. The Company’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors.

Quantitative measures established by regulation to ensure capital adequacy require the Company to maintain minimum amounts and ratios (set forth in the table below) of total and Tier 1 capital to risk-weighted assets, and of Tier 1 capital to average assets. Management believes, as of December 31, 2014, that the Company meets all capital adequacy requirements to which it is subject.

As of December 31, 2014, the Bank was well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized the Bank must maintain minimum total risk-based, Tier 1 risk-based and Tier 1 leverage ratios as set forth in the table below. There are no conditions or events since that date that Management believes have changed the institution’s category. The Bank’s actual capital amounts and ratios are also presented in the table.

	Actual					Minimum Capital Requirement					Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio			Amount		Ratio			Amount		Ratio
	(dollars in thousands)
As of December 31, 2014:
Total Capital (to Risk Weighted Assets):
Consolidated	$	436,955		15.63	%	$	223,603		8.0	%		N/A		N/A
Tri Counties Bank	$	433,286		15.51	%	$	223,449		8.0	%	$	279,311		10.0	%
Tier 1 Capital (to Risk Weighted Assets):
Consolidated	$	401,971		14.38	%	$	111,801		4.0	%		N/A		N/A
Tri Counties Bank	$	398,325		14.26	%	$	111,724		4.0	%	$	167,587		6.0	%
Tier 1 Capital (to Average Assets):
Consolidated	$	401,971		10.80	%	$	148,819		4.0	%		N/A		N/A
Tri Counties Bank	$	398,325		10.71	%	$	148,734		4.0	%	$	185,918		5.0	%
As of December 31, 2013:
Total Capital (to Risk Weighted Assets):
Consolidated	$	297,429		14.77	%	$	161,064		8.0	%		N/A		N/A
Tri Counties Bank	$	295,212		14.67	%	$	160,961		8.0	%	$	201,201		10.0	%
Tier 1 Capital (to Risk Weighted Assets):
Consolidated	$	272,071		13.51	%	$	80,532		4.0	%		N/A		N/A
Tri Counties Bank	$	269,870		13.41	%	$	80,480		4.0	%	$	120,720		6.0	%
Tier 1 Capital (to Average Assets):
Consolidated	$	272,071		10.17	%	$	107,017		4.0	%		N/A		N/A
Tri Counties Bank	$	269,870		10.09	%	$	106,965		4.0	%	$	133,706		5.0	%

99

Note 30 - Summary of Quarterly Results of Operations (unaudited)

The following table sets forth the results of operations for the four quarters of 2014 and 2013, and is unaudited; however, in the opinion of Management, it reflects all adjustments (which include only normal recurring adjustments) necessary to present fairly the summarized results for such periods.

	2014 Quarters Ended
	December 31,			September 30,			June 30,		March 31,
	(dollars in thousands, except per share data)
Interest and dividend income:
Loans:
Discount accretion PCI – cash basis	$	107		$	290		$	69	$	203
Discount accretion PCI – other		919			822			811		984
Discount accretion PNCI		796			402			624		379
All other loan interest income		28,914			23,466			22,929		22,172
Total loan interest income		30,736			24,980			24,433		23,738
Debt securities, dividends and interest bearing cash at Banks (not FTE)		5,671			4,151			3,985		3,421
Total interest income		36,407			29,131			28,418		27,159
Interest expense		1,437			1,082			1,075		1,087
Net interest income		34,970			28,049			27,343		26,072
(Benefit from) provision for loan losses		(1,421	)		(2,977	)		1,708		(1,355	)
Net interest income after provision for loan losses		36,391			31,026			25,635		27,427
Noninterest income		9,755			8,589			7,877		8,295
Noninterest expense		36,566			25,380			25,116		23,317
Income before income taxes		9,580			14,235			8,396		12,405
Income tax expense		3,930			6,001			3,537		5,040
Net income	$	5,650		$	8,234		$	4,859	$	7,365
Per common share:
Net income (diluted)	$	0.25		$	0.50		$	0.30	$	0.45
Dividends	$	0.11		$	0.11		$	0.11	$	0.11

	2013 Quarters Ended
	December 31,		September 30,			June 30,		March 31,
	(dollars in thousands, except per share data)
Interest and dividend income:
Loans:
Discount accretion PCI – cash basis	$	255	$	140		$	129	$	167
Discount accretion PCI – other		893		898			732		597
Discount accretion PNCI		568		1,115			815		766
All other loan interest income		22,754		22,970			22,207		22,542
Total loan interest income		24,470		25,123			23,883		24,072
Debt securities, dividends and interest bearing cash at Banks (not FTE)		2,992		2,413			1,873		1,734
Total interest income		27,462		27,536			25,756		25,806
Interest expense		1,123		1,169			1,167		1,237
Net interest income		26,339		26,367			24,589		24,569
Provision for (benefit from) loan losses		172		(393	)		614		(1,108	)
Net interest income after provision for loan losses		26,167		26,760			23,975		25,677
Noninterest income		7,353		9,127			10,131		10,218
Noninterest expense		24,878		23,616			23,509		21,601
Income before income taxes		8,642		12,271			10,597		14,294
Income tax expense		3,406		4,910			4,272		5,817
Net income	$	5,236	$	7,361		$	6,325	$	8,477
Per common share:
Net income (diluted)	$	0.32	$	0.45		$	0.39	$	0.53
Dividends	$	0.11	$	0.11		$	0.11	$	0.09

100

MANAGEMENT’S REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING

Management of TriCo Bancshares is responsible for establishing and maintaining effective internal control over financial reporting. Internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with U.S. generally accepted accounting principles.

Under the supervision and with the participation of management, including the principal executive officer and principal financial officer, the Company conducted an evaluation of the effectiveness of internal control over financial reporting based on the framework in the 2013 Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. The Company has excluded the current year acquisition of North Valley Bancorp representing approximately 24% of total assets at December 31, 2014 from the scope of management’s report on internal control over financial reporting. Based on this evaluation under the framework in the 2013 Internal Control – Integrated Framework, management of the Company has concluded the Company maintained effective internal control over financial reporting, as such term is defined in Securities Exchange Act of 1934 Rules 13a-15(f), as of December 31, 2014.

Internal control over financial reporting cannot provide absolute assurance of achieving financial reporting objectives because of its inherent limitations. Internal control over financial reporting is a process that involves human diligence and compliance and is subject to lapses in judgment and breakdowns resulting from human failures. Internal control over financial reporting can also be circumvented by collusion or improper management override. Because of such limitations, there is a risk that material misstatements may not be prevented or detected on a timely basis by internal control over financial reporting. However, these inherent limitations are known features of the financial reporting process. Therefore, it is possible to design into the process safeguards to reduce, though not eliminate, this risk.

Management is also responsible for the preparation and fair presentation of the consolidated financial statements and other financial information contained in this report. The accompanying consolidated financial statements were prepared in conformity with U.S. generally accepted accounting principles and include, as necessary, best estimates and judgments by management.

Crowe Horwath LLP, an independent registered public accounting firm, has audited the Company’s consolidated financial statements as of and for the year ended December 31, 2014, and the Company’s effectiveness of internal control over financial reporting as of December 31, 2014, as stated in its report, which is included herein.

/s/ Richard P. Smith

Richard P. Smith

President and Chief Executive Officer

/s/ Thomas J. Reddish

Thomas J. Reddish

Executive Vice President and Chief Financial Officer

March 13, 2015

101

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We have audited the accompanying balance sheets of TriCo Bancshares as of December 31, 2014 and 2013, and the related statements of income, stockholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2014. We also have audited TriCo Bancshares’s internal control over financial reporting as of December 31, 2014, based on criteria established in the 2013 Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). TriCo Bancshares’s management is responsible for these financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on these financial statements and an opinion on the Company’s internal control over financial reporting based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement and whether effective internal control over financial reporting was maintained in all material respects. Our audits of the financial statements included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

As permitted, the Company has excluded the operations of North Valley Bank acquired during 2014, which is described in Note 2 of the consolidated financial statements, from the scope of management’s report on internal control over financial reporting. As such, it has also been excluded from the scope of our audit of internal control over financial reporting.

In our opinion, the financial statements referred to above present fairly, in all material respects, the financial position of TriCo Bancshares as of December 31, 2014 and 2013, and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2014 in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, TriCo Bancshares maintained, in all material respects, effective internal control over financial reporting as of December 31, 2014, based on criteria established in the 2013 Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission.

/s/ Crowe Horwath LLP

Sacramento, California

March 13, 2015

102

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

ITEM  9A. CONTROLS AND PROCEDURES

(a) Evaluation of Disclosure Controls and Procedures

As of December 31, 2014, the end of the period covered by this Annual Report on Form 10-K, the Company’s Chief Executive Officer and Chief Financial Officer evaluated the effectiveness of the Company’s disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934). Based upon that evaluation, the Company’s Chief Executive Officer and Chief Financial Officer each concluded that as of December 31, 2014, the Company’s disclosure controls and procedures were effective to ensure that the information required to be disclosed by the Company in this Annual Report on Form 10-K was recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and instructions for Form 10-K.

(b) Management’s Report on Internal Control over Financial Reporting and Attestation Report of Registered Public Accounting Firm

Management’s report on internal control over financial reporting is set forth on page 101 of this report and is incorporated herein by reference. The effectiveness of the Company’s internal control over financial reporting as of December 31, 2014 has been audited by Crowe Horwath LLP, an independent registered public accounting firm, as stated in its report, which is set forth on page 102 of this report and is incorporated herein by reference.

(c) Changes in Internal Control over Financial Reporting

No change in the Company’s internal control over financial reporting occurred during the fourth quarter of the year ended December 31, 2014, that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.

ITEM  9B. OTHER INFORMATION

All information required to be disclosed in a current report on Form 8-K during the fourth quarter of 2014 was so disclosed.

103

PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

The information required by this Item 10 shall either be incorporated herein by reference from the Company’s Proxy Statement for the 2015 annual meeting of shareholders, which will be filed with the Commission pursuant to Regulation 14A or included in an amendment to this Form 10-K.

ITEM 11. EXECUTIVE COMPENSATION

The information required by this Item 11 shall either be incorporated herein by reference from the Company’s Proxy Statement for the 2015 annual meeting of shareholders, which will be filed with the Commission pursuant to Regulation 14A or included in an amendment to this Form 10-K.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

The information required by this Item 12 shall either be incorporated herein by reference from the Company’s Proxy Statement for the 2015 annual meeting of shareholders, which will be filed with the Commission pursuant to Regulation 14A or included in an amendment to this Form 10-K.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

The information required by this Item 13 shall either be incorporated herein by reference from the Company’s Proxy Statement for the 2015 annual meeting of shareholders, which will be filed with the Commission pursuant to Regulation 14A or included in an amendment to this Form 10-K.

ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES

The information required by this Item 14 shall either be incorporated herein by reference from the Company’s Proxy Statement for the 2015 annual meeting of shareholders, which will be filed with the Commission pursuant to Regulation 14A or included in an amendment to this Form 10-K.

PART IV

ITEM  15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a) Documents filed as part of this report:

1. All Financial Statements.

The consolidated financial statements of Registrant are included in Item 8 of this report, and are incorporated herein by reference.

2. Financial statement schedules.

Schedules have been omitted because they are not applicable or are not required under the instructions contained in Regulation S-X or because the information required to be set forth therein is included in the consolidated financial statements or notes thereto at Item 8 of this report.

3. Exhibits.

The exhibit list required by this item is incorporated by reference to the Exhibit Index filed with this report.

(b) Exhibits filed:

See Exhibit Index under Item 15(a)(3) above for the list of exhibits required to be filed by Item 601 of regulation S-K with this report.

(c) Financial statement schedules filed:

See Item 15(a)(2) above.

104

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: March 13, 2015		TRICO BANCSHARES
	By:	/s/ Richard P. Smith
		Richard P. Smith, President and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Registrant in the capacities and on the dates indicated.

Date: March 13, 2015	/s/ Richard P. Smith
	Richard P. Smith, President, Chief Executive
	Officer and Director (Principal Executive Officer)
Date: March 13, 2015	/s/ Thomas J. Reddish
	Thomas J. Reddish, Executive Vice President and Chief Financial
	Officer (Principal Financial and Accounting Officer)
Date: March 13, 2015	/s/ Donald J. Amaral
	Donald J. Amaral, Director
Date: March 13, 2015	/s/ William J. Casey
	William J. Casey, Director and Chairman of the Board
Date: March 13, 2015	/s/ Craig S. Compton
	Craig S. Compton, Director
Date: March 13, 2015	/s/ L. Gage Chrysler
	L. Gage Chrysler, Director
Date: March 13, 2015	/s/ Cory W. Giese
	Cory W. Giese, Director
Date: March 13, 2015	/s/ John S.A. Hasbrook
	John S.A. Hasbrook, Director
Date: March 13, 2015	/s/ Patrick A. Kilkenny
	Patrick A. Kilkenny, Director
Date: March 13, 2015	/s/ Michael W. Koehnen
	Michael W. Koehnen, Director
Date: March 13, 2015	/s/ Martin A. Mariani
	Martin A. Mariani, Director
Date: March 13, 2015	/s/ W. Virginia Walker
	W. Virginia Walker, Director
Date: March 13, 2015	/s/ J. M. “Mike” Wells, Jr.
	J. M. “Mike” Wells, Jr., Director

105

EXHIBIT INDEX

Exhibit No.	Exhibit
2.1	Purchase and Assumption Agreement Whole Bank All Deposits, among the Federal Deposit Insurance Corporation, receiver of Granite Community Bank, N.A., Granite Bay, California, the Federal Deposit Insurance Corporation and Tri Counties Bank, dated as of May 28, 2010, and related addendum (incorporated by reference to Exhibit 2.1 to TriCo’s Current Report on Form 8-K filed June 3, 2010).
2.2	Purchase and Assumption Agreement Whole Bank All Deposits, among the Federal Deposit Insurance Corporation, receiver of Citizens Bank of Northern California, Nevada City, California, the Federal Deposit Insurance Corporation and Tri Counties Bank, dated as of September 23, 2011, and related addendum (incorporated by reference to Exhibit 2.1 to TriCo’s Current Report on Form 8-K filed September 27, 2011).
2.3	Agreement and Plan of Merger and Reorganization by and between TriCo and North Valley Bancorp dated January 21, 2014 (incorporated by reference to Exhibit 2.1 to TriCo’s Current Report on Form 8-K filed January 21, 2014).
3.1	Restated Articles of Incorporation (incorporated by reference to Exhibit 3.1 to TriCo’s Current Report on Form 8-K filed on March 17, 2009).
3.2	Bylaws of TriCo, as amended (incorporated by reference to Exhibit 3.1 to TriCo’s Current Report on Form 8-K filed February 17, 2011).
4.1	Instruments defining the rights of holders of the long-term debt securities of the TriCo and its subsidiaries are omitted pursuant to section (b)(4)(iii)(A) of Item 601 of Regulation S-K. TriCo hereby agrees to furnish copies of these instruments to the Securities and Exchange Commission upon request.
10.1*	Form of Change of Control Agreement dated as of July 17, 2013, among TriCo, Tri Counties Bank and each of Dan Bailey, Craig Carney, Richard O’Sullivan, Thomas Reddish, and Ray Rios (incorporated by reference to Exhibit 10.2 to TriCo’s Current Report on Form 8-K filed on July 23, 2013).
10.2*	TriCo’s 1995 Incentive Stock Option Plan (incorporated by reference to Exhibit 4.1 to TriCo’s Form S-8 Registration Statement dated August 23, 1995 (No. 33-62063)).
10.3*	TriCo’s 2001 Stock Option Plan, as amended (incorporated by reference to Exhibit 10.7 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2005).
10.4*	TriCo’s 2009 Equity Incentive Plan, as amended (incorporated by reference to Exhibit 10.2 to TriCo’s Current Report on Form 8-K filed April 3, 2013).
10.5*	Amended Employment Agreement between TriCo and Richard Smith dated as of March 28, 2013 (incorporated by reference to Exhibit 10.1 to TriCo’s Current Report on Form 8-K filed April 3, 2013).
10.6*	Transaction Bonus Agreement between TriCo Bancshares and Richard P. Smith dated as of August 7, 2014 (incorporated by reference to Exhibit 10.4 to TriCo’s Form 8-K filed on August 13, 2014).
10.7*	Tri Counties Bank Executive Deferred Compensation Plan restated April 1, 1992, and January 1, 2005 (incorporated by reference to Exhibit 10.9 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2005).
10.8*	Tri Counties Bank Deferred Compensation Plan for Directors effective January 1, 2005 (incorporated by reference to Exhibit 10.10 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2005).
10.9*	2005 Tri Counties Bank Deferred Compensation Plan for Executives and Directors effective January 1, 2005 (incorporated by reference to Exhibit 10.11 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2005).
10.10*	Tri Counties Bank Supplemental Retirement Plan for Directors dated September 1, 1987, as restated January 1, 2001, and amended and restated January 1, 2004 (incorporated by reference to Exhibit 10.12 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2004).
10.11*	2004 TriCo Bancshares Supplemental Retirement Plan for Directors effective January 1, 2004 (incorporated by reference to Exhibit 10.13 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2004).
10.12*	Tri Counties Bank Supplemental Executive Retirement Plan effective September 1, 1987, as amended and restated January 1, 2004 (incorporated by reference to Exhibit 10.14 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2004).
10.13*	2004 TriCo Bancshares Supplemental Executive Retirement Plan effective January 1, 2004 (incorporated by reference to Exhibit 10.15 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2004).
10.14*	Form of Joint Beneficiary Agreement effective March 31, 2003 between Tri Counties Bank and each of George Barstow, Dan Bay, Ron Bee, Craig Carney, Robert Elmore, Greg Gill, Richard Miller, Richard O’Sullivan, Thomas Reddish, Jerald Sax, and Richard Smith (incorporated by reference to Exhibit 10.14 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2003).
10.15*	Form of Joint Beneficiary Agreement effective March 31, 2003 between Tri Counties Bank and each of Don Amaral, William Casey, Craig Compton, John Hasbrook, Michael Koehnen, Donald Murphy, Carroll Taresh, and Alex Vereschagin (incorporated by reference to Exhibit 10.15 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2003).
10.16*	Form of Tri Counties Bank Executive Long Term Care Agreement effective June 10, 2003 between Tri Counties Bank and each of Craig Carney, Richard Miller, Richard O’Sullivan, and Thomas Reddish (incorporated by reference to Exhibit 10.16 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2003).
10.17*	Form of Tri Counties Bank Director Long Term Care Agreement effective June 10, 2003 between Tri Counties Bank and each of Don Amaral, William Casey, Craig Compton, John Hasbrook, Michael Koehnen, Donald Murphy, Carroll Taresh, and Alex Vereschagin (incorporated by reference to Exhibit 10.17 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2003).

106

Exhibit No.	Exhibit
10.18*	Form of Indemnification Agreement between TriCo and its directors and executive officers (incorporated by reference to Exhibit 10.1 to TriCo’s Current Report on Form 8-K filed September 10, 2013).
10.19*	Form of Indemnification Agreement between Tri Counties Bank its directors and executive officers (incorporated by reference to Exhibit 10.2 to TriCo’s Current Report on Form 8-K filed September 10, 2013).
10.20*	Form of Stock Option Agreement and Grant Notice pursuant to TriCo’s 2009 Equity Incentive Plan (incorporated by reference to Exhibit 10.1 to TriCo’s Current Report on Form 8-K filed May 25, 2010).
10.21*	Form of Restricted Stock Unit Agreement and Grant Notice for Non-Employee Executives pursuant to TriCo’s 2009 Equity Incentive Plan (incorporated by reference to Exhibit 10.1 to TriCo’s Current Report on Form 8-K filed November 14, 2014).
10.22*	Form of Restricted Stock Unit Agreement and Grant Notice for Directors pursuant to TriCo’s 2009 Equity Incentive Plan (incorporated by reference to Exhibit 10.1 to TriCo’s Current Report on Form 8-K filed November 14, 2014).
10.23*	Form of 2014 Performance Award Agreement and Grant Notice pursuant to TriCo’s 2009 Equity Incentive Plan (incorporated by reference to Exhibit 10.3 to TriCo’s Current Report on Form 8-K filed August 13, 2014).
21.1	List of Subsidiaries
23.1	Independent Registered Public Accounting Firm’s Consent
31.1	Rule 13a-14(a)/15d-14(a) Certification of CEO
31.2	Rule 13a-14(a)/15d-14(a) Certification of CFO
32.1	Section 1350 Certification of CEO
32.2	Section 1350 Certification of CFO
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document

* Management contract or compensatory plan or arrangement

107

EX-21.1

Exhibit 21.1

List of Subsidiaries of TriCo Bancshares

Name	State of Organization
Tri Counties Bank	California state-chartered Bank
TriCo Capital Trust I	Delaware
TriCo Capital Trust II	Delaware
North Valley Capital Trust II	Connecticut
North Valley Capital Trust III	Connecticut
North Valley Capital Trust IV	Connecticut

EX-23.1

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statements No. 333-190047, 333-66064, 333-115455 and 333-160405 on Form S-8 of TriCo Bancshares of our report dated March 13, 2015 relating to the consolidated financial statements and effectiveness of internal control over financial reporting, appearing in this Annual Report on Form 10-K.

/s/ Crowe Horwath LLP

Sacramento, California

March 13, 2015

EX-31.1

Exhibit 31.1

Rule 13a-14/15d-14 Certification of CEO

I, Richard P. Smith, certify that;

1. I have reviewed this annual report on Form 10-K of TriCo Bancshares;

2. Based on my knowledge, this annual report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this annual report;

3. Based on my knowledge, the financial statements, and other financial information included in this annual report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this annual report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and we have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this annual report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluations; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent quarter (the Registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors:

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: March 13, 2015	/s/ Richard P. Smith
	Richard P. Smith
	President and Chief Executive Officer

EX-31.2

Exhibit 31.2

Rule 13a-14/15d-14 Certification of CFO

I, Thomas J. Reddish, certify that;

1. I have reviewed this annual report on Form 10-K of TriCo Bancshares;

2. Based on my knowledge, this annual report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this annual report;

3. Based on my knowledge, the financial statements, and other financial information included in this annual report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this annual report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and we have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this annual report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluations; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent quarter (the Registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors:

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: March 13, 2015	/s/ Thomas J. Reddish
	Thomas J. Reddish
	Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

Section 1350 Certification of CEO

In connection with the Annual Report of TriCo Bancshares (the “Company”) on Form 10-K for the year ended December 31, 2014 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Richard P. Smith, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Richard P. Smith

Richard P. Smith

President and Chief Executive Officer

A signed original of this written statement required by Section 906 has been provided to TriCo Bancshares and will be retained by TriCo Bancshares and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

Section 1350 Certification of CFO

In connection with the Annual Report of TriCo Bancshares (the “Company”) on Form 10-K for the year ended December 31, 2014 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Thomas J. Reddish, Executive Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Thomas J. Reddish

Thomas J. Reddish

Executive Vice President and Chief Financial Officer

A signed original of this written statement required by Section 906 has been provided to TriCo Bancshares and will be retained by TriCo Bancshares and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Description of Business and Basis of Presentation

Description of Business and Basis of Presentation

TriCo Bancshares (the “Company”) is a California corporation organized to act as a bank holding company for Tri Counties Bank (the “Bank”). The Company and the Bank are headquartered in Chico, California. The Bank is a California-chartered bank that is engaged in the general commercial banking business in 26 California counties. Tri Counties Bank currently operates from 57 traditional branches and 16 in-store branches. The Company has five capital subsidiary business trusts (collectively, the Capital Trusts) that issued trust preferred securities, including two organized by TriCo and three acquired with the acquisition of North Valley Bancorp. See Note 17 – Junior Subordinated Debt.

The consolidated financial statements are prepared in accordance with accounting policies generally accepted in the United States of America and general practices in the banking industry. The financial statements include the accounts of the Company. All inter-company accounts and transactions have been eliminated in consolidation. For financial reporting purposes, the Company’s investments in the Capital Trusts of $1,690,000 are accounted for under the equity method and, accordingly, are not consolidated and are included in other assets on the consolidated balance sheet. The subordinated debentures issued and guaranteed by the Company and held by the Capital Trusts are reflected as debt on the Company’s consolidated balance sheet.

Use of Estimates in the Preparation of Financial Statements

Use of Estimates in the Preparation of Financial Statements

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires Management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. On an on-going basis, the Company evaluates its estimates, including those related to the adequacy of the allowance for loan losses, investments, intangible assets, income taxes and contingencies. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions. The allowance for loan losses, indemnification asset, foreclosed assets, goodwill and other intangible assets, income taxes, fair value of assets acquired and liabilities assumed in business combinations, the valuation of securities available-for-sale, and the valuation of mortgage servicing rights are the only accounting estimates that materially affect the Company’s consolidated financial statements.

As described in Note 2, the Company acquired North Valley Bancorp on October 3, 2014. The acquired assets and assumed liabilities were measured at estimated fair value values under the acquisition method of accounting. The Company made significant estimates and exercised significant judgment in accounting for the acquisition. The Company determined loan fair values based on loan file reviews, loan risk ratings, appraised collateral values, expected cash flows and historical loss factors. Foreclosed assets were primarily valued based on appraised values of the repossessed loan collateral. Land and building were valued based on appraised values. An identifiable intangible was also recorded representing the fair value of the core deposit customer base based on an evaluation of the cost of such deposits relative to alternative funding sources. The fair value of time deposits and borrowings were determined based on the present value of estimated future cash flows using current rates as of the acquisition date.

Significant Group Concentration of Credit Risk

Significant Group Concentration of Credit Risk

The Company grants agribusiness, commercial, consumer, and residential loans to customers located throughout the northern San Joaquin Valley, the Sacramento Valley and northern mountain regions of California. The Company has a diversified loan portfolio within the business segments located in this geographical area. The Company currently classifies all its operation into one business segment that it denotes as community banking.

Cash and Cash Equivalents

Cash and Cash Equivalents

For purposes of the consolidated statements of cash flows, cash and cash equivalents include cash on hand, amounts due from banks, and federal funds sold. Net cash flows are reported for loan and deposit transactions and other borrowings.

Investment Securities

Investment Securities

The Company classifies its debt and marketable equity securities into one of three categories: trading, available for sale or held to maturity. Trading securities are bought and held principally for the purpose of selling in the near term. Held to maturity securities are those securities which the Company has the ability and intent to hold until maturity. These securities are carried at cost adjusted for amortization of premium and accretion of discount, computed by the effective interest method over their contractual lives. All other securities not included in trading or held to maturity are classified as available for sale. Available for sale securities are recorded at fair value. Unrealized gains and losses, net of the related tax effect, on available for sale securities are reported as a separate component of other accumulated comprehensive income in shareholders’ equity until realized. Premiums and discounts are amortized or accreted over the life of the related investment security as an adjustment to yield using the effective interest method. Dividend and interest income are recognized when earned. Realized gains and losses are derived from the amortized cost of the security sold. During the years ended December 31, 2014 and 2013, the Company did not have any securities classified as trading.

The Company assesses other-than-temporary impairment (“OTTI”) based on whether it intends to sell a security or if it is likely that the Company would be required to sell the security before recovery of the amortized cost basis of the investment, which may be maturity. For debt securities, if we intend to sell the security or it is likely that we will be required to sell the security before recovering its cost basis, the entire impairment loss would be recognized in earnings as an OTTI. If we do not intend to sell the security and it is not likely that we will be required to sell the security but we do not expect to recover the entire amortized cost basis of the security, only the portion of the impairment loss representing credit losses would be recognized in earnings. The credit loss on a security is measured as the difference between the amortized cost basis and the present value of the cash flows expected to be collected. Projected cash flows are discounted by the original or current effective interest rate depending on the nature of the security being measured for potential OTTI. The remaining impairment related to all other factors, the difference between the present value of the cash flows expected to be collected and fair value, is recognized as a charge to other comprehensive income (“OCI”). Impairment losses related to all other factors are presented as separate categories within OCI. The accretion of the amount recorded in OCI increases the carrying value of the investment and does not affect earnings. If there is an indication of additional credit losses the security is re-evaluated according to the procedures described above. No OTTI losses were recognized during the years ended December 31, 2014 and 2013.

Restricted Equity Securities

Restricted Equity Securities

Restricted equity securities represent the Company’s investment in the stock of the Federal Home Loan Bank of San Francisco (“FHLB”) and are carried at par value, which reasonably approximates its fair value. While technically these are considered equity securities, there is no market for the FHLB stock. Therefore, the shares are considered as restricted investment securities. Management periodically evaluates FHLB stock for other-than-temporary impairment. Management’s determination of whether these investments are impaired is based on its assessment of the ultimate recoverability of cost rather than by recognizing temporary declines in value. The determination of whether a decline affects the ultimate recoverability of cost is influenced by criteria such as (1) the significance of any decline in net assets of the FHLB as compared to the capital stock amount for the FHLB and the length of time this situation has persisted, (2) commitments by the FHLB to make payments required by law or regulation and the level of such payments in relation to the operating performance of the FHLB, (3) the impact of legislative and regulatory changes on institutions and, accordingly, the customer base of the FHLB, and (4) the liquidity position of the FHLB.

As a member of the FHLB system, the Company is required to maintain a minimum level of investment in FHLB stock based on specific percentages of its outstanding mortgages, total assets, or FHLB advances. The Company may request redemption at par value of any stock in excess of the minimum required investment. Stock redemptions are at the discretion of the FHLB.

Loans Held for Sale

Loans Held for Sale

Loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or fair value, as determined by aggregate outstanding commitments from investors of current investor yield requirements. Net unrealized losses are recognized through a valuation allowance by charges to noninterest income.

Mortgage loans held for sale are generally sold with the mortgage servicing rights retained by the Company. Gains or losses on the sale of loans that are held for sale are recognized at the time of the sale and determined by the difference between net sale proceeds and the net book value of the loans less the estimated fair value of any retained mortgage servicing rights.

Loans and Allowance for Loan Losses

Loans and Allowance for Loan Losses

Loans originated by the Company, i.e., not purchased or acquired in a business combination, are referred to as originated loans. Originated loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at the principal amount outstanding, net of deferred loan fees and costs. Loan origination and commitment fees and certain direct loan origination costs are deferred, and the net amount is amortized as an adjustment of the related loan’s yield over the actual life of the loan. Originated loans on which the accrual of interest has been discontinued are designated as nonaccrual loans.

Originated loans are placed in nonaccrual status when reasonable doubt exists as to the full, timely collection of interest or principal, or a loan becomes contractually past due by 90 days or more with respect to interest or principal and is not well secured and in the process of collection. When an originated loan is placed on nonaccrual status, all interest previously accrued but not collected is reversed. Income on such loans is then recognized only to the extent that cash is received and where the future collection of principal is probable. Interest accruals are resumed on such loans only when they are brought fully current with respect to interest and principal and when, in the judgment of Management, the loan is estimated to be fully collectible as to both principal and interest.

An allowance for loan losses for originated loans is established through a provision for loan losses charged to expense. The allowance is maintained at a level which, in Management’s judgment, is adequate to absorb probable incurred credit losses inherent in the loan portfolio as of the balance sheet date. Originated loans and deposit related overdrafts are charged against the allowance for loan losses when Management believes that the collectability of the principal is unlikely or, with respect to consumer installment loans, according to an established delinquency schedule. The allowance is an amount that Management believes will be adequate to absorb probable incurred losses inherent in existing loans and leases, based on evaluations of the collectability, impairment and prior loss experience of loans and leases. The evaluations take into consideration such factors as changes in the nature and size of the portfolio, overall portfolio quality, loan concentrations, specific problem loans, and current economic conditions that may affect the borrower’s ability to pay. The Company defines an originated loan as impaired when it is probable the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement. Impaired originated loans are measured based on the present value of expected future cash flows discounted at the loan’s original effective interest rate. As a practical expedient, impairment may be measured based on the loan’s observable market price or the fair value of the collateral if the loan is collateral dependent. When the measure of the impaired loan is less than the recorded investment in the loan, the impairment is recorded through a valuation allowance.

In situations related to originated loans where, for economic or legal reasons related to a borrower’s financial difficulties, the Company grants a concession for other than an insignificant period of time to the borrower that the Company would not otherwise consider, the related loan is classified as a troubled debt restructuring (TDR). The Company strives to identify borrowers in financial difficulty early and work with them to modify to more affordable terms before their loan reaches nonaccrual status. These modified terms may include rate reductions, principal forgiveness, payment forbearance and other actions intended to minimize the economic loss and to avoid foreclosure or repossession of the collateral. In cases where the Company grants the borrower new terms that result in the loan being classified as a TDR, the Company measures any impairment on the restructuring as noted above for impaired loans. TDR loans are classified as impaired until they are fully paid off or charged off. Loans that are in nonaccrual status at the time they become TDR loans, remain in nonaccrual status until the borrower demonstrates a sustained period of performance which the Company generally believes to be six consecutive months of payments, or equivalent. Otherwise, TDR loans are subject to the same nonaccrual and charge-off policies as noted above with respect to their restructured principal balance.

Credit risk is inherent in the business of lending. As a result, the Company maintains an allowance for loan losses to absorb probable incurred losses inherent in the Company’s originated loan portfolio. This is maintained through periodic charges to earnings. These charges are included in the Consolidated Statements of Income as provision for loan losses. All specifically identifiable and quantifiable losses are immediately charged off against the allowance. However, for a variety of reasons, not all losses are immediately known to the Company and, of those that are known, the full extent of the loss may not be quantifiable at that point in time. The balance of the Company’s allowance for originated loan losses is meant to be an estimate of these unknown but probable losses inherent in the portfolio.

The Company formally assesses the adequacy of the allowance for originated loan losses on a quarterly basis. Determination of the adequacy is based on ongoing assessments of the probable risk in the outstanding originated loan portfolio, and to a lesser extent the Company’s originated loan commitments. These assessments include the periodic re-grading of credits based on changes in their individual credit characteristics including delinquency, seasoning, recent financial performance of the borrower, economic factors, changes in the interest rate environment, growth of the portfolio as a whole or by segment, and other factors as warranted. Loans are initially graded when originated. They are re-graded as they are renewed, when there is a new loan to the same borrower, when identified facts demonstrate heightened risk of nonpayment, or if they become delinquent. Re-grading of larger problem loans occurs at least quarterly. Confirmation of the quality of the grading process is obtained by independent credit reviews conducted by consultants specifically hired for this purpose and by various bank regulatory agencies.

The Company’s method for assessing the appropriateness of the allowance for originated loan losses includes specific allowances for impaired originated loans and leases, formula allowance factors for pools of credits, and allowances for changing environmental factors (e.g., interest rates, growth, economic conditions, etc.). Allowance factors for loan pools were based on historical loss experience by product type and prior risk rating.

During the three months ended March 31, 2013, the Company changed the method it uses to estimate net sale proceeds from real estate collateral sales when calculating the allowance for loan losses associated with impaired real estate collateral dependent loans. Previously, the Company used the greater of fifteen percent or actual estimated selling costs. Currently, the Company uses the actual estimated selling costs, and an adjustment to appraised value based on the age of the appraisal. These changes are intended to more accurately reflect the estimated net sale proceeds from the sale of impaired collateral dependent real estate loans. This change in methodology resulted in the allowance for loan losses as of March 31, 2013 being $494,000 more than it would have been without this change in methodology.

During the three months ended June 30, 2013, the Company modified its loss migration analysis methodology used to determine the formula allowance factors. When the Company originally established its loss migration analysis methodology during the quarter ended March 31, 2012, it reviewed the loss experience of each rolling twelve month period over the previous three years in order to calculate an annualized loss rate by loan category and risk rating. The use of three years of loss experience data was originally used because that was the extent of the detailed loss data by loan category and risk rating that was available at the time. This three year historical look-back period was used through the quarter ended March 31, 2013. Starting with the quarter ended June 30, 2013, the Company reviews all available detailed loss experience data, going back to, and including, the twelve month period ended June 30, 2009, and does not limit the look-back period to the most recent three years of historical loss data. Using this data, the Company calculates loss factors for each quarter from the quarter ended June 30, 2009 to the most recent quarter. The Company then calculates a weighted average formula allowance factor for each loan category and risk rating with the most recent quarterly loss factor being weighted 125%, the quarter ended June 30, 2009 loss factor being weighted 75%, and the loss factors for all the quarters between the most recent quarter and the quarter ended June 30, 2009, being weighted on a linear scale from 75% to 125%. This change is intended to more accurately reflect the risk inherent in the loan portfolio by considering historical loss data for all years as the data for new periods becomes available. This change in methodology resulted in the allowance for loan losses as of June 30, 2013 being $1,314,000 more than it would have been without this change in methodology.

During the three months ended September 30, 2013, the Company modified its methodology used to determine the allowance for changing environmental factors. Previously, the Company compared the current value of each environmental factor to a fixed baseline value. The deviation of the current value from the baseline value was then multiplied by a conversion factor to determine the required allowance related to each environmental factor. As of September 30, 2013, the Company replaced the fixed baseline values with average baseline values derived from historical averages, and adjusted the conversion factors. This change is intended to more accurately reflect the risk inherent in the portfolio by recognizing that baseline, or normal, levels for environmental factors may change over time. This change in methodology resulted in the allowance for loan losses as of September 30, 2013 being $1,665,000 more than it would have been without this change in methodology.

During the three months ended March 31, 2014, the Company modified its methodology used to determine the allowance for changing environmental factors by adding a new environmental factor based on the California Home Affordability Index (“CHAI”). The CHAI measures the percentage of households in California that can afford to purchase the median priced home in California based on current home prices and mortgage interest rates. The use of the CHAI environmental factor consists of comparing the current CHAI to its historical baseline, and allows management to consider the adverse impact that a lower than historical CHAI may have on general economic activity and the performance of our borrowers. Based on an analysis of historical data, management believes this environmental factor gives a better estimate of current economic activity compared to other environmental factors that may lag current economic activity to some extent. This change in methodology resulted in no change to the allowance for loan losses as of March 31, 2014 compared to what it would have been without this change in methodology.

During the three months ended June 30, 2014, the Company refined the method it uses to evaluate historical losses for the purpose of estimating the pool allowance for unimpaired loans. In the third quarter of 2010, the Company moved from a six point grading system (Grades A-F) to a nine point risk rating system (Risk Ratings 1-9), primarily to allow for more distinction within the “Pass” risk rating. Initially, there was not sufficient loss experience within the nine point scale to complete a migration analysis for all nine risk ratings, all loans risk rated Pass or 2-5 were grouped together, a loss rate was calculated for that group, and that loss rate was established as the loss rate for risk rating 4. The reserve ratios for risk ratings 2, 3 and 5 were then interpolated from that figure. As of June 30, 2014, the Company was able to compile twelve quarters of historical loss information for all risk ratings and use that information to calculate the loss rates for each of the nine risk ratings without interpolation. This refinement led to an increase of $1,438,000 in the reserve requirement for unimpaired loans, driven primarily by home equity lines of credit with a risk rating of 5 or “Pass-Watch.”

Loans purchased or acquired in a business combination are referred to as acquired loans. Acquired loans are valued as of the acquisition date in accordance with Financial Accounting Standards Board Accounting Standards Codification (“FASB ASC”) Topic 805, Business Combinations. Loans acquired with evidence of credit deterioration since origination for which it is probable that all contractually required payments will not be collected are referred to as purchased credit impaired (PCI) loans. PCI loans are accounted for under FASB ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality. Under FASB ASC Topic 805 and FASB ASC Topic 310-30, PCI loans are recorded at fair value at acquisition date, factoring in credit losses expected to be incurred over the life of the loan. Accordingly, an allowance for loan losses is not carried over or recorded as of the acquisition date. Fair value is defined as the present value of the future estimated principal and interest payments of the loan, with the discount rate used in the present value calculation representing the estimated effective yield of the loan. Default rates, loss severity, and prepayment speed assumptions are periodically reassessed and our estimate of future payments is adjusted accordingly. The difference between contractual future payments and estimated future payments is referred to as the nonaccretable difference. The difference between estimated future payments and the present value of the estimated future payments is referred to as the accretable yield. The accretable yield represents the amount that is expected to be recorded as interest income over the remaining life of the loan. If after acquisition, the Company determines that the estimated future cash flows of a PCI loan are expected to be more than originally estimated, an increase in the discount rate (effective yield) would be made such that the newly increased accretable yield would be recognized, on a level yield basis, over the remaining estimated life of the loan. If, after acquisition, the Company determines that the estimated future cash flows of a PCI loan are expected to be less than previously estimated, the discount rate would first be reduced until the present value of the reduced cash flow estimate equals the previous present value however, the discount rate may not be lowered below its original level at acquisition. If the discount rate has been lowered to its original level and the present value has not been sufficiently lowered, an allowance for loan loss would be established through a provision for loan losses charged to expense to decrease the present value to the required level. If the estimated cash flows improve after an allowance has been established for a loan, the allowance may be partially or fully reversed depending on the improvement in the estimated cash flows. Only after the allowance has been fully reversed may the discount rate be increased. PCI loans are put on nonaccrual status when cash flows cannot be reasonably estimated. PCI loans on nonaccrual status are accounted for using the cost recovery method or cash basis method of income recognition. The Company refers to PCI loans on nonaccrual status that are accounted for using the cash basis method of income recognition as “PCI – cash basis” loans; and the Company refers to all other PCI loans as “PCI – other” loans PCI loans are charged off when evidence suggests cash flows are not recoverable. Foreclosed assets from PCI loans are recorded in foreclosed assets at fair value with the fair value at time of foreclosure representing cash flow from the loan. ASC 310-30 allows PCI loans with similar risk characteristics and acquisition time frame to be “pooled” and have their cash flows aggregated as if they were one loan. The Company elected to use the “pooled” method of ASC 310-30 for PCI – other loans in the acquisition of certain assets and liabilities of Granite Community Bank, N.A. (“Granite”) during 2010 and Citizens Bank of Northern California (“Citizens”) during 2011.

Acquired loans that are not PCI loans are referred to as purchased not credit impaired (PNCI) loans. PNCI loans are accounted for under FASB ASC Topic 310-20, Receivables – Nonrefundable Fees and Other Costs, in which interest income is accrued on a level-yield basis for performing loans. For income recognition purposes, this method assumes that all contractual cash flows will be collected, and no allowance for loan losses is established at the time of acquisition. Post-acquisition date, an allowance for loan losses may need to be established for acquired loans through a provision charged to earnings for credit losses incurred subsequent to acquisition. Under ASC 310-20, the loss would be measured based on the probable shortfall in relation to the contractual note requirements, consistent with our allowance for loan loss policy for similar loans.

Throughout these financial statements, and in particular in Note 4 and Note 5, when we refer to “Loans” or “Allowance for loan losses” we mean all categories of loans, including Originated, PNCI, PCI – cash basis, and PCI – other. When we are not referring to all categories of loans, we will indicate which we are referring to – Originated, PNCI, PCI – cash basis, or PCI – other.

When referring to PNCI and PCI loans we will use the terms “nonaccretable difference”, “accretable yield”, or “purchase discount”. Nonaccretable difference is the difference between undiscounted contractual cash flows due and undiscounted cash flows we expect to collect, or put another way, it is the undiscounted contractual cash flows we do not expect to collect. Accretable yield is the difference between undiscounted cash flows we expect to collect and the value at which we have recorded the loan on our financial statements. On the date of acquisition, all purchased loans are recorded on our consolidated financial statements at estimated fair value. Purchase discount is the difference between the estimated fair value of loans on the date of acquisition and the principal amount owed by the borrower, net of charge offs, on the date of acquisition. We may also refer to “discounts to principal balance of loans owed, net of charge-offs”. Discounts to principal balance of loans owed, net of charge-offs is the difference between principal balance of loans owed, net of charge-offs, and loans as recorded on our financial statements. Discounts to principal balance of loans owed, net of charge-offs arise from purchase discounts, and equal the purchase discount on the acquisition date.

Loans are also categorized as “covered” or “noncovered”. Covered loans refer to loans covered by a Federal Deposit Insurance Corporation (“FDIC”) loss sharing agreement. Noncovered loans refer to loans not covered by a FDIC loss sharing agreement.

Foreclosed Assets

Foreclosed Assets

Foreclosed assets include assets acquired through, or in lieu of, loan foreclosure. Foreclosed assets are held for sale and are initially recorded at fair value less estimated costs to sell at the date of foreclosure, establishing a new cost basis. Subsequent to foreclosure, management periodically performs valuations and the assets are carried at the lower of carrying amount or fair value less cost to sell. Revenue and expenses from operations and changes in the valuation allowance are included in other noninterest expense. Gain or loss on sale of foreclosed assets is included in noninterest income. Foreclosed assets that are not subject to a FDIC loss-share agreement are referred to as noncovered foreclosed assets.

Foreclosed assets acquired through FDIC-assisted acquisitions that are subject to a FDIC loss-share agreement, and all assets acquired via foreclosure of covered loans are referred to as covered foreclosed assets. Covered foreclosed assets are reported exclusive of expected reimbursement cash flows from the FDIC. Foreclosed covered loan collateral is transferred into covered foreclosed assets at the loan’s carrying value, inclusive of the acquisition date fair value discount.

Covered foreclosed assets are initially recorded at estimated fair value less estimated costs to sell on the acquisition date based on similar market comparable valuations less estimated selling costs. Any subsequent valuation adjustments due to declines in fair value will be charged to noninterest expense, and will be mostly offset by noninterest income representing the corresponding increase to the FDIC indemnification asset for the offsetting loss reimbursement amount. Any recoveries of previous valuation adjustments will be credited to noninterest expense with a corresponding charge to noninterest income for the portion of the recovery that is due to the FDIC.

Premises and Equipment

Premises and Equipment

Land is carried at cost. Land improvements, buildings and equipment, including those acquired under capital lease, are stated at cost less accumulated depreciation and amortization. Depreciation and amortization expenses are computed using the straight-line method over the estimated useful lives of the related assets or lease terms. Asset lives range from 3-10 years for furniture and equipment and 15-40 years for land improvements and buildings.

Goodwill and Other Intangible Assets

Goodwill and Other Intangible Assets

Goodwill represents the excess of costs over fair value of net assets of businesses acquired. Goodwill and other intangible assets acquired in a purchase business combination and determined to have an indefinite useful life are not amortized, but instead tested for impairment at least annually. Intangible assets with estimable useful lives are amortized over their respective estimated useful lives to their estimated residual values, and reviewed for impairment.

The Company has an identifiable intangible asset consisting of core deposit intangibles (CDI). CDI are amortized over their respective estimated useful lives, and reviewed for impairment.

Impairment of Long-Lived Assets and Goodwill

Impairment of Long-Lived Assets and Goodwill

Long-lived assets, such as premises and equipment, and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized by the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of would be separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and are no longer depreciated. The assets and liabilities of a disposed group classified as held for sale would be presented separately in the appropriate asset and liability sections of the consolidated balance sheet.

As of December 31 of each year, goodwill is tested for impairment, and is tested for impairment more frequently if events and circumstances indicate that the asset might be impaired. An impairment loss is recognized to the extent that the carrying amount exceeds the asset’s fair value. This determination is made at the reporting unit level. The Company may choose to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, the Company determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then goodwill is deemed not to be impaired. However, if the Company concludes otherwise, or if the Company elected not to first assess qualitative factors, then the Company performs the first step of a two-step impairment test by calculating the fair value of the reporting unit and comparing the fair value with the carrying amount of the reporting unit. Second, if the carrying amount of the reporting unit exceeds its fair value, an impairment loss is recognized for any excess of the carrying amount of the reporting unit’s goodwill over the implied fair value of that goodwill. The implied fair value of goodwill is determined by allocating the fair value of the reporting unit in a manner similar to a purchase price allocation. The residual fair value after this allocation is the implied fair value of the reporting unit goodwill. Currently, and historically, the Company is comprised of only one reporting unit that operates within the business segment it has identified as “community banking”. Goodwill was not impaired as of December 31, 2014 because the fair value of the reporting unit exceeded its carrying value.

Mortgage Servicing Rights

Mortgage Servicing Rights

Mortgage servicing rights (MSR) represent the Company’s right to a future stream of cash flows based upon the contractual servicing fee associated with servicing mortgage loans. Our MSR arise from residential and commercial mortgage loans that we originate and sell, but retain the right to service the loans. The net gain from the retention of the servicing right is included in gain on sale of loans in noninterest income when the loan is sold. Fair value is based on market prices for comparable mortgage servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, the custodial earnings rate, an inflation rate, ancillary income, prepayment speeds and default rates and losses. Servicing fees are recorded in noninterest income when earned.

The Company accounts for MSR at fair value. The determination of fair value of our MSR requires management judgment because they are not actively traded. The determination of fair value for MSR requires valuation processes which combine the use of discounted cash flow models and extensive analysis of current market data to arrive at an estimate of fair value. The cash flow and prepayment assumptions used in our discounted cash flow model are based on empirical data drawn from the historical performance of our MSR, which we believe are consistent with assumptions used by market participants valuing similar MSR, and from data obtained on the performance of similar MSR. The key assumptions used in the valuation of MSR include mortgage prepayment speeds and the discount rate. These variables can, and generally will, change from quarter to quarter as market conditions and projected interest rates change. The key risks inherent with MSR are prepayment speed and changes in interest rates. The Company uses an independent third party to determine fair value of MSR.

Indemnification Asset/Liability

Indemnification Asset/Liability

The Company accounts for amounts receivable or payable under its loss-share agreements entered into with the FDIC in connection with its purchase and assumption of certain assets and liabilities of Granite as indemnification assets in accordance with FASB ASC Topic 805, Business Combinations. FDIC indemnification assets are initially recorded at fair value, based on the discounted value of expected future cash flows under the loss-share agreements. The difference between the fair value and the undiscounted cash flows the Company expects to collect from or pay to the FDIC will be accreted into noninterest income over the life of the FDIC indemnification asset. FDIC indemnification assets are reviewed quarterly and adjusted for any changes in expected cash flows based on recent performance and expectations for future performance of the covered portfolios. These adjustments are measured on the same basis as the related covered loans and covered other real estate owned. Any increases in cash flow of the covered assets over those expected will reduce the FDIC indemnification asset and any decreases in cash flow of the covered assets under those expected will increase the FDIC indemnification asset. Increases and decreases to the FDIC indemnification asset are recorded as adjustments to noninterest income.

Reserve for Unfunded Commitments

Reserve for Unfunded Commitments

The reserve for unfunded commitments is established through a provision for losses – unfunded commitments charged to noninterest expense. The reserve for unfunded commitments is an amount that Management believes will be adequate to absorb probable losses inherent in existing commitments, including unused portions of revolving lines of credits and other loans, standby letters of credits, and unused deposit account overdraft privilege. The reserve for unfunded commitments is based on evaluations of the collectability, and prior loss experience of unfunded commitments. The evaluations take into consideration such factors as changes in the nature and size of the loan portfolio, overall loan portfolio quality, loan concentrations, specific problem loans and related unfunded commitments, and current economic conditions that may affect the borrower’s or depositor’s ability to pay.

During the three months ended June 30, 2013, the Company modified the methodology employed to estimate potential losses on unfunded commitments. Similar to the Allowance for Loan Losses, the Company performs a migration analysis of historical loss experience. Prior to this quarter, the loss experience of each quarter over the previous three years was reviewed in order to calculate an annualized loss rate by loan category. Going forward, the Company has chosen to review all loss experience available since the conversion to a loss migration analysis. This change is intended to more accurately reflect the risk inherent in the unfunded commitments and appropriately consider all losses incurred in prior years. This change in methodology resulted in the reserve for unfunded commitments as of June 30, 2013 being $335,000 more than it would have been without this change in methodology.

Income Taxes

Income Taxes

The Company’s accounting for income taxes is based on an asset and liability approach. The Company recognizes the amount of taxes payable or refundable for the current year, and deferred tax assets and liabilities for the future tax consequences that have been recognized in its financial statements or tax returns. The measurement of tax assets and liabilities is based on the provisions of enacted tax laws. A valuation allowance, if needed, reduces deferred tax assets to the expected amount most likely to be realized. Realization of deferred tax assets is dependent upon the generation of a sufficient level of future taxable income and recoverable taxes paid in prior years. Although realization is not assured, management believes it is more likely than not that all of the deferred tax assets will be realized. Interest and/or penalties related to income taxes are reported as a component of noninterest income.

Off-Balance Sheet Credit Related Financial Instruments

Off-Balance Sheet Credit Related Financial Instruments

In the ordinary course of business, the Company has entered into commitments to extend credit, including commitments under credit card arrangements, commercial letters of credit, and standby letters of credit. Such financial instruments are recorded when they are funded.

Geographical Descriptions

Geographical Descriptions

For the purpose of describing the geographical location of the Company’s loans, the Company has defined northern California as that area of California north of, and including, Stockton; central California as that area of the state south of Stockton, to and including, Bakersfield; and southern California as that area of the state south of Bakersfield.

Reclassifications

Reclassifications

Certain amounts reported in previous consolidated financial statements have been reclassified to conform to the presentation in this report. These reclassifications did not affect previously reported net income or total shareholders’ equity.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

FASB issued ASU No. 2014-04, Receivables (Topic 310): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure. ASU 2014-04 clarifies when an in substance repossession or foreclosure occurs, that is, when a creditor should be considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan such that the loan receivable should be derecognized and the real estate property recognized. ASU 2014-04 is effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. ASU 2014-04 is not expected to have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU No. 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity. ASU 2014-08 improves the definition of discontinued operations by limiting discontinued operations reporting to disposals of components of an entity that represent strategic shifts that have (or will have) a major effect on an entity’s operations and financial results. ASU 2014-08 requires expanded disclosures for discontinued operations that provide users of financial statements with more information about the assets, liabilities, revenues, and expenses of discontinued operations. ASU 2014-08 also requires an entity to disclose the pretax profit or loss of an individually significant component of an entity that does not qualify for discontinued operations reporting, and provide users with information about the financial effects of significant disposals that do not qualify for discontinued operations reporting. The amendments in ASU 2014-08 include several changes to the Accounting Standards Codification to improve the organization and readability of Subtopic 205-20 and Subtopic 360-10, Property, Plant, and Equipment—Overall. ASU 2014-08 is effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. ASU 2014-08 is not expected to have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). The core principle of the guidance under ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 is effective for a public entity for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. The Company is currently evaluating the effects of ASU 2014-09 on its financial statements and disclosures, if any.

FASB issued ASU No. 2014-11, Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures. ASU 2014-11 requires that repurchase-to-maturity transactions be accounted for as secured borrowings consistent with the accounting for other repurchase agreements. In addition, ASU 2014-11 requires separate accounting for repurchase financings, which entails the transfer of a financial asset executed contemporaneously with a repurchase agreement with the same counterparty. ASU 2014-11 requires entities to disclose certain information about transfers accounted for as sales in transactions that are economically similar to repurchase agreements. In addition, ASU 2014-11 requires disclosures related to collateral, remaining contractual tenor and of the potential risks associated with repurchase agreements, securities lending transactions and repurchase-to-maturity transactions. ASU 2014-11 is effective for public business entities for the first interim or annual period beginning after December 15, 2014. An entity is required to present changes in accounting for transactions outstanding on the effective date as a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. Earlier application for a public business entity is prohibited. ASU 2014-11 is not expected to have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU No. 2014-12, Compensation—Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be achieved after the Requisite Service Period. ASU 2014-12 requires that a performance target that affects the vesting of a share-based payment award and that could be achieved after the requisite service period be treated as a performance condition. A reporting entity should apply existing guidance in Topic 718 as it relates to awards with performance conditions that affect vesting to account for such awards. As such, the performance target should not be reflected in estimating the grant-date fair value of the award. Compensation cost should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. If the performance target becomes probable of being achieved before the end of the requisite service period, the remaining unrecognized compensation cost should be recognized prospectively over the remaining requisite service period. The total amount of compensation cost recognized during and after the requisite service period should reflect the number of awards that are expected to vest and should be adjusted to reflect those awards that ultimately vest. The requisite service period ends when the employee can cease rendering service and still be eligible to vest in the award if the performance target is achieved. The stated vesting period (which includes the period in which the performance target could be achieved) may differ from the requisite service period. Current U.S. GAAP does not contain explicit guidance on whether to treat a performance target that could be achieved after the requisite service period as a performance condition that affects vesting or as a nonvesting condition that affects the grant-date fair value of an award. ASU 2014-12 provides explicit guidance for those awards. For all entities, ASU 2014-12 is effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. Earlier adoption is permitted.

FASB issued ASU No. 2014-14, Receivables—Troubled Debt Restructurings by Creditors (Topic 310): Classification of Certain Government Mortgage Loans upon Foreclosure. ASU 2014-14 requires that a mortgage loan be derecognized and that a separate other receivable be recognized upon foreclosure if the following conditions are met: 1) the loan has a government guarantee that is not separable from the loan before foreclosure, 2) at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under that claim, and 3) at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed. Upon foreclosure, the separate other receivable should be measured based on the amount of the loan balance (principal and interest) expected to be recovered from the guarantor. For public business entities, ASU 2014-14 is effective for annual periods and interim periods within those annual periods beginning after December 15, 2014. Earlier adoption is permitted.

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Fair Value Measurement - Quantitative Information about Recurring Level 3 Fair Value Measurements (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Constant prepayment rate	12.00%	10.30%	20.30%
Discount rate	10.00%	10.00%	10.00%
Mortgage servicing rights [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Mortgages Servicing Rights, Fair Value	7,378
Minimum [Member] | Mortgage servicing rights [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	10.00%
Minimum [Member] | Mortgage servicing rights [Member] | Discounted Cash Flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Constant prepayment rate	5.70%
Maximum [Member] | Mortgage servicing rights [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	12.00%
Maximum [Member] | Mortgage servicing rights [Member] | Discounted Cash Flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Constant prepayment rate	23.40%
Weighted Average [Member] | Mortgage servicing rights [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	10.00%
Weighted Average [Member] | Mortgage servicing rights [Member] | Discounted Cash Flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Constant prepayment rate	12.00%

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Shareholders' Equity - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Aug. 21, 2007	Dec. 31, 2011
Class of Stock [Line Items]
Dividend payable by bank	$ 52,798,000
Shareholder Rights Plan	Jun. 25, 2001
Percentage of restriction on acquiring outstanding common stock by person or group	15.00%
Repurchase of common stock				500,000
Stock repurchase plan percentage of common stock				3.20%
Common stock, shares outstanding	22,714,964	16,076,662		15,814,662
Repurchased shares outstanding		166,600
Common Stock [Member]
Class of Stock [Line Items]
Common stock, shares outstanding	22,714,964	16,076,662	16,000,838		15,978,958
Company's common stock in lieu of cash to exercise options to purchase shares	103,268	172,941	14,120
Market value of common stock	2,551,000	3,490,000	224,000
Tri Counties Bank [Member]
Class of Stock [Line Items]
Cash dividends received	$ 8,270,000	$ 8,175,000	$ 8,522,000
Mellon Investor Services LLC [Member] | Amendment [Member]
Class of Stock [Line Items]
Amendment date of Right Plan	Jun. 04, 2014
Schedule expiration date plan	Jul. 01, 2014

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Other Borrowings (Tables)

12 Months Ended

Dec. 31, 2014

Text Block [Abstract]

Summary of Balances of Other Borrowings

A summary of the balances of other borrowings follows:

	December 31,
	2014		2013
	(in thousands)
Other collateralized borrowings, fixed rate, as of December 31, 2014 of 0.05%, payable on January 2, 2014	$	9,276	$	6,335
Total other borrowings	$	9,276	$	6,335

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Summary of Quarterly Results of Operations (Unaudited) - Result of Operations (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Loans:
Discount accretion PCI - cash basis	$ 107	$ 290	$ 69	$ 203	$ 255	$ 140	$ 129	$ 167
Discount accretion PCI - other	919	822	811	984	893	898	732	597
Discount accretion PNCI	796	402	624	379	568	1,115	815	766
All other loan interest income	28,914	23,466	22,929	22,172	22,754	22,970	22,207	22,542
Total loan interest income	30,736	24,980	24,433	23,738	24,470	25,123	23,883	24,072
Debt securities, dividends and interest bearing cash at Banks (not FTE)	5,671	4,151	3,985	3,421	2,992	2,413	1,873	1,734
Total interest and dividend income	36,407	29,131	28,418	27,159	27,462	27,536	25,756	25,806	121,115	106,560	108,716
Interest expense	1,437	1,082	1,075	1,087	1,123	1,169	1,167	1,237	4,681	4,696	7,344
Net interest income	34,970	28,049	27,343	26,072	26,339	26,367	24,589	24,569	116,434	101,864	101,372
(Benefit from) provision for loan losses	(1,421)	(2,977)	1,708	(1,355)	172	(393)	614	(1,108)	(4,045)	(715)	9,423
Net interest income after provision for loan losses	36,391	31,026	25,635	27,427	26,167	26,760	23,975	25,677	120,479	102,579	91,949
Noninterest income	9,755	8,589	7,877	8,295	7,353	9,127	10,131	10,218	34,516	36,829	37,980
Noninterest expense	36,566	25,380	25,116	23,317	24,878	23,616	23,509	21,601	110,379	93,604	97,998
Income before income taxes	9,580	14,235	8,396	12,405	8,642	12,271	10,597	14,294	44,616	45,804	31,931
Income tax expense	3,930	6,001	3,537	5,040	3,406	4,910	4,272	5,817	18,508	18,405	12,937
Net income	$ 5,650	$ 8,234	$ 4,859	$ 7,365	$ 5,236	$ 7,361	$ 6,325	$ 8,477	$ 26,108	$ 27,399	$ 18,994
Per common share:
Net income (diluted)	$ 0.25	$ 0.50	$ 0.30	$ 0.45	$ 0.32	$ 0.45	$ 0.39	$ 0.53	$ 1.46	$ 1.69	$ 1.18
Dividends	$ 0.11	$ 0.11	$ 0.11	$ 0.11	$ 0.11	$ 0.11	$ 0.11	$ 0.09

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Mortgage Servicing Rights (Tables)

12 Months Ended

Dec. 31, 2014

Text Block [Abstract]

Fair Value of Mortgage Servicing Rights

The following tables summarize the activity in, and the main assumptions we used to determine the fair value of mortgage servicing rights for the periods indicated (dollars in thousands):

	Years ended December 31,
	2014			2013			2012
Balance at beginning of period	$	6,165		$	4,552		$	4,603
Acquisition		1,944			—			—
Originations		570			1,360			1,965
Change in fair value		(1,301	)		253			(2,016	)
Balance at end of period	$	7,378		$	6,165		$	4,552
Contractually specified servicing fees, late fees and ancillary fees earned	$	1,869		$	1,774		$	1,666
Balance of loans serviced at:
Beginning of period	$	680,197		$	666,512		$	598,185
End of period	$	840,288		$	680,197		$	666,512
Weighted-average prepayment speed (CPR)		12.0	%		10.3	%		20.3	%
Weighted-average discount rate		10.0	%		10.0	%		10.0	%

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Noninterest Income and Expense - Components of Noninterest Expense (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule Of Other Noninterest Income And Expense [Line Items]
Base salaries, net of deferred loan origination costs									$ 39,342	$ 34,404	$ 33,093
Incentive compensation									5,068	4,694	5,138
Benefits and other compensation costs									13,134	12,838	11,721
Total salaries and benefits expense									57,544	51,936	49,952
Occupancy									8,203	7,405	7,263
Equipment									4,514	4,162	4,444
Data processing and software									6,512	4,844	4,793
Assessments									2,107	2,248	2,393
ATM network charges									2,996	2,480	2,390
Advertising									2,413	1,981	2,876
Professional fees									3,888	2,707	2,879
Telecommunications									2,870	2,449	2,250
Postage									949	786	920
Courier service									1,055	988	1,013
Foreclosed assets expense									528	514	1,474
Intangible amortization									446	209	209
Operational losses									764	618	787
Provision for foreclosed asset losses									208	682	1,728
Reserve for unfunded commitments									(395)	(1,200)	875
Legal settlement										339	2,090
Merger expense									4,858	312
Other									10,919	10,144	9,662
Total other noninterest expense									52,835	41,668	48,046
Total noninterest expense	36,566	25,380	25,116	23,317	24,878	23,616	23,509	21,601	110,379	93,604	97,998
Merger expense:
Merger expense									4,858	312
Merger expense									4,858	312
North Valley Bancorp [Member] | Incentive compensation [Member]
Schedule Of Other Noninterest Income And Expense [Line Items]
Merger expense									1,174
Merger expense:
Merger expense									1,174
Merger expense									1,174
North Valley Bancorp [Member] | Benefits and other compensation costs [Member]
Schedule Of Other Noninterest Income And Expense [Line Items]
Merger expense									94
Merger expense:
Merger expense									94
Merger expense									94
North Valley Bancorp [Member] | Data processing and software [Member]
Schedule Of Other Noninterest Income And Expense [Line Items]
Merger expense									475
Merger expense:
Merger expense									475
Merger expense									475
North Valley Bancorp [Member] | Professional fees [Member]
Schedule Of Other Noninterest Income And Expense [Line Items]
Merger expense									2,390	312
Merger expense:
Merger expense									2,390	312
Merger expense									2,390	312
North Valley Bancorp [Member] | Other [Member]
Schedule Of Other Noninterest Income And Expense [Line Items]
Merger expense									725
Merger expense:
Merger expense									725
Merger expense									$ 725

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Business Combinations - Schedule of Fair Value of Consideration Transferred, Identifiable Net Assets Acquired and Resulting Goodwill (Detail) (USD $)	0 Months Ended
	Oct. 03, 2014	Dec. 31, 2014	Dec. 31, 2013
Fair value of consideration transferred:
Cash consideration	$ 6,823
Liabilities assumed:
Goodwill recognized		63,462,000	15,519,000
North Valley Bancorp [Member]
Fair value of consideration transferred:
Fair value of shares issued	151,303,000
Cash consideration	7,000
Total fair value of consideration transferred	151,310,000
Asset acquired:
Cash and cash equivalents	141,412,000
Securities available for sale	17,297,000
Securities held to maturity	189,949,000
Restricted equity securities	5,378,000
Loans	499,327,000
Foreclosed assets	695,000
Premises and equipment	11,936,000
Cash value of life insurance	38,075,000
Core deposit intangible	6,614,000
Other assets	20,056,000
Total assets acquired	930,739,000
Liabilities assumed:
Deposits	801,956,000
Other liabilities	10,429,000
Junior subordinated debt	14,987,000
Total liabilities assumed	827,372,000
Total net assets acquired	103,367,000
Goodwill recognized	$ 47,943,000

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Income Taxes - Company's Net Deferred Tax Asset Recorded in Other Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred tax assets:
Allowance for losses	$ 16,284	$ 17,096
Deferred compensation	3,115	3,093
Accrued pension liability	7,925	5,817
Accrued bonus	1,149	1,037
Other accrued expenses	124
Unfunded status of the supplemental retirement plans	3,315	331
State taxes	1,713	1,390
Stock option expense	2,534	2,225
Nonaccrual interest	2,714	1,840
OREO write downs	198	331
Acquisition cost basis	6,017	699
Tax credits	490
Net operating loss carryforwards	7,128
Other	625
Total deferred tax assets	53,331	33,859
Deferred tax liabilities:
Securities income	(1,362)	(986)
Unrealized gain on securities	(1,699)	(1,767)
Depreciation	(3,072)	(392)
Merger related fixed asset valuations	(54)	(379)
Securities accretion	(287)	(256)
Mortgage servicing rights valuation	(2,977)	(2,416)
Indemnification asset	147	(87)
Core deposit intangible	(2,802)	(193)
Junior subordinated debt	(2,782)
Prepaid expenses and other	(737)	(602)
Total deferred tax liability	(15,625)	(7,078)
Net deferred tax asset	$ 37,706	$ 26,781

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Junior Subordinated Debt (Tables)

12 Months Ended

Dec. 31, 2014

Text Block [Abstract]

Summary of Terms and Recorded Balance of Subordinated Debenture

The following table summarizes the terms and recorded balance of each subordinated debenture as of the date indicated (dollars in thousands):

Subordinated Debt Series	Maturity Date		Face Value		Coupon Rate (Variable) 3 mo. LIBOR +			As of December 31, 2014
								Current Coupon Rate			Recorded Book Value
TriCo Cap Trust I		10/7/2033	$	20,619		3.05	%		3.28	%	$	20,619
TriCo Cap Trust II		7/23/2034		20,619		2.55	%		2.78	%		20,619
North Valley Trust II		4/24/2033		6,186		3.25	%		3.48	%		5,015
North Valley Trust III		4/24/2034		5,155		2.80	%		3.03	%		3,927
North Valley Trust IV		3/15/2036		10,310		1.33	%		1.57	%		6,092
			$	62,889							$	56,272

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Investment Securities - Gross Unrealized Losses on Investment (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	$ 6,774	$ 10,486
Less than 12 months, Unrealized Loss	(25)	(358)
12 months or more, Fair Value	0	0
12 months or more, Unrealized Loss	0	0
Total Fair Value	6,774	10,486
Total Unrealized Loss	(25)	(358)
Less than 12 months, Fair Value, held to maturity	1,935	199,403
Less than 12 months, Unrealized Loss, held to maturity	(27)	(6,995)
12 months or more, Fair Value, held to maturity	58,146
12 months or more, Unrealized Loss, held to maturity	(805)
Total Fair Value, held to maturity	60,081	199,403
Total Unrealized Loss, held to maturity	(832)	(6,995)
Obligations of U.S. government corporations and agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	6,774	10,287
Less than 12 months, Unrealized Loss	(25)	(357)
12 months or more, Fair Value	0	0
12 months or more, Unrealized Loss	0	0
Total Fair Value	6,774	10,287
Total Unrealized Loss	(25)	(357)
Less than 12 months, Fair Value, held to maturity	335	188,218
Less than 12 months, Unrealized Loss, held to maturity	(1)	(5,540)
12 months or more, Fair Value, held to maturity	56,288
12 months or more, Unrealized Loss, held to maturity	(676)
Total Fair Value, held to maturity	56,623	188,218
Total Unrealized Loss, held to maturity	(677)	(5,540)
Obligations of states and political subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value		199
Less than 12 months, Unrealized Loss		(1)
12 months or more, Fair Value	0	0
12 months or more, Unrealized Loss	0	0
Total Fair Value		199
Total Unrealized Loss		(1)
Less than 12 months, Fair Value, held to maturity	1,600	11,185
Less than 12 months, Unrealized Loss, held to maturity	(26)	(1,455)
12 months or more, Fair Value, held to maturity	1,858
12 months or more, Unrealized Loss, held to maturity	(129)
Total Fair Value, held to maturity	3,458	11,185
Total Unrealized Loss, held to maturity	(155)	(1,455)
Corporate debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
12 months or more, Fair Value	0	0
12 months or more, Unrealized Loss	0	0
Marketable equity securities [Member]
Schedule of Available-for-sale Securities [Line Items]
12 months or more, Fair Value	0
12 months or more, Unrealized Loss	$ 0

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Other Borrowings - Summary of Balances of Other Borrowings (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Total other borrowings	$ 9,276	$ 6,335
Other collateralized borrowings, fixed rate, as of December 31, 2014 of 0.05%, payable on January 2, 2014 [Member]
Debt Instrument [Line Items]
Other collateralized borrowings, fixed rate, as of December 31, 2014 of 0.05%, payable on January 2, 2014	$ 9,276	$ 6,335

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Cash Value of Life Insurance (Tables)

12 Months Ended

Dec. 31, 2014

Investments, All Other Investments [Abstract]

Summary of Activity in Balance of Cash Value of Life Insurance

A summary of the activity in the balance of cash value of life insurance follows (dollars in thousands):

	Year ended December 31,
	2014		2013
Beginning balance	$	52,309	$	50,582
Acquisitions		38,075		—
Increase in cash value of life insurance		1,953		1,727
Ending balance	$	92,337	$	52,309
End of period death benefit	$	165,966	$	95,513
Number of policies owned		189		133
Insurance companies used		14		6
Current and former employees and directors covered		60		36

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Retirement Plans

12 Months Ended

Dec. 31, 2014

Compensation and Retirement Disclosure [Abstract]

Retirement Plans

Note 25 – Retirement Plans

401(k) Plan

The Company sponsors a 401(k) Plan whereby substantially all employees age 21 and over with 90 days of service may participate. Participants may contribute a portion of their compensation subject to certain limits based on federal tax laws. During 2014, 2013, and 2012 the Company did not contribute to the 401(k) Plan. The Company did not incur any material expenses attributable to the 401(k) Plan during 2014, 2013, and 2012.

Employee Stock Ownership Plan

Substantially all employees with at least one year of service are covered by a discretionary employee stock ownership plan (ESOP). Contributions are made to the plan at the discretion of the Board of Directors. Contributions to the plan totaling $1,294,000 in 2014, $1,648,000 in 2013, and $1,229,000 in 2012, are included in salary expense. Company shares owned by the ESOP are paid dividends and included in the calculation of earnings per share exactly as other common shares outstanding.

Deferred Compensation Plans

The Company has deferred compensation plans for certain directors and key executives, which allow certain directors and key executives designated by the Board of Directors of the Company to defer a portion of their compensation. The Company has purchased insurance on the lives of the participants and intends to hold these policies until death as a cost recovery of the Company’s deferred compensation obligations of $7,408,000 and $7,357,000 at December 31, 2014 and 2013, respectively. Earnings credits on deferred balances totaling $551,000 in 2014, $568,000 in 2013, and $599,000 in 2012.

Supplemental Retirement Plans

The Company has supplemental retirement plans for certain directors and key executives. These plans are non-qualified defined benefit plans and are unsecured and unfunded. The Company has purchased insurance on the lives of the participants and intends to hold these policies until death as a cost recovery of the Company’s retirement obligations. The cash values of the insurance policies purchased to fund the deferred compensation obligations and the supplemental retirement obligations were $92,337,000 and $52,309,000 at December 31, 2014 and 2013, respectively.

The Company recorded in other liabilities the unfunded status of the supplemental retirement plans of $7,885,000 and $787,000 related to the supplemental retirement plans as of December 31, 2014 and 2013, respectively. These amounts represent the amount by which the projected benefit obligations for these retirement plans exceeded the fair value of plan assets plus amounts previously accrued related to the plans. The projected benefit obligation is recorded in other liabilities.

At December 31, 2014 and 2013, the unfunded status of the supplemental retirement plans of $7,885,000 and $787,000 were offset by a reduction of shareholders’ equity accumulated other comprehensive loss of $4,570,000 and $456,000, respectively, representing the after-tax impact of the unfunded status of the supplemental retirement plans, and the related deferred tax asset of $3,315,000 and $331,000, respectively. Amounts recognized as a component of accumulated other comprehensive loss as of year-end that have not been recognized as a component of the combined net period benefit cost of the Company’s defined benefit pension plans are presented in the following table. The Company expects to recognize approximately $823,000 of the net actuarial loss reported in the following table as of December 31, 2014 as a component of net periodic benefit cost during 2015.

	December 31,
(in thousands)	2014			2013
Transition obligation	$	9		$	11
Prior service cost		(173	)		(35	)
Net actuarial loss		8,049			811
Amount included in accumulated other comprehensive loss	$	7,885			787
Deferred tax benefit		(3,315	)		(331	)
Amount included in accumulated other comprehensive loss, net of tax	$	4,570		$	456

Information pertaining to the activity in the supplemental retirement plans, using a measurement date of December 31, is as follows:

	December 31,
	2014			2013
	(in thousands)
Change in benefit obligation:
Benefit obligation at beginning of year	$	(14,634	)	$	(16,345	)
Acquisition		(4,150	)		—
Service cost		(652	)		(742	)
Interest cost		(739	)		(643	)
Actuarial (loss)/gain		(7,254	)		2,573
Benefits paid		631			523
Benefit obligation at end of year	$	(26,798	)	$	(14,634	)
Change in plan assets:
Fair value of plan assets at beginning of year	$	—		$	—
Fair value of plan assets at end of year	$	—		$	—
Funded status	$	(26,798	)	$	(14,634	)
Unrecognized net obligation existing at January 1, 1986		9			11
Unrecognized net actuarial loss		8,049			811
Unrecognized prior service cost		(173	)		(35	)
Accumulated other comprehensive income		(7,885	)		(787	)
Accrued benefit cost	$	(26,798	)	$	(14,634	)
Accumulated benefit obligation	$	(24,739	)	$	(12,954	)

The following table sets forth the net periodic benefit cost recognized for the supplemental retirement plans:

	Years Ended December 31,
	2014		2013		2012
	(in thousands)
Net pension cost included the following components:
Service cost-benefits earned during the period	$	652	$	743	$	680
Interest cost on projected benefit obligation		739		643		687
Amortization of net obligation at transition		2		2		2
Amortization of prior service cost		138		153		153
Recognized net actuarial loss		16		291		288
Net periodic pension cost	$	1,547	$	1,832	$	1,810

The following table sets forth assumptions used in accounting for the plans:

	Years Ended December 31,
	2014			2013			2012
Discount rate used to calculate benefit obligation		3.65	%		4.85	%		4.00	%
Discount rate used to calculate net periodic pension cost		3.65	%		4.85	%		4.00	%
Average annual increase in executive compensation		2.50	%		2.50	%		2.50	%
Average annual increase in director compensation		2.50	%		2.50	%		2.50	%

The following table sets forth the expected benefit payments to participants and estimated contributions to be made by the Company under the supplemental retirement plans for the years indicated:

Years Ended	Expected Benefit Payments to Participants		Estimated Company Contributions
	(in thousands)
2015	$	1,145	$	1,145
2016		1,036		1,036
2017		1,001		1,001
2018		1,330		1,330
2019		519		519
2020-2024	$	3,719	$	3,719

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Loans - Summary of Loan Balances (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Mortgage loans on real estate:
Total mortgage loan on real estate	$ 1,615,359	$ 1,107,863
Consumer:
Total consumer loans	417,084	383,163
Commercial	174,945	131,878
Construction:
Total construction	75,136	49,103
Total loans, net of deferred loan fees and discounts	2,282,524	1,672,007
Total principal balance of loans owed, net of charge-offs	2,322,853	1,703,380
Unamortized net deferred loan fees	(4,793)	(3,694)
Discounts to principal balance of loans owed, net of charge-offs	(35,536)	(27,679)
Total loans, net of unamortized deferred loan fees and discounts	2,282,524	1,672,007
Noncovered loans	2,260,256	1,644,095
Covered loans	22,268	27,912
Total loans, net of unamortized deferred loan fees and discounts	2,282,524	1,672,007
Allowance for loan losses	(36,585)	(38,245)	(42,648)	(45,914)
Auto Indirect [Member]
Consumer:
Total consumer loans	112	946
Other [Member]
Consumer:
Total consumer loans	33,074	27,763
Residential 1-4 family [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	279,420	195,013
Commercial [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	1,335,939	912,850
Construction:
Total construction	36,518	17,170
Home equity lines of credit [Member]
Consumer:
Total consumer loans	352,584	339,866
Construction:
Allowance for loan losses	(15,676)	(16,375)	(21,367)	(18,258)
Home equity loans [Member]
Consumer:
Total consumer loans	31,314	14,588
Residential [Member]
Construction:
Total construction	38,618	31,933
Originated [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	1,083,391	954,794
Consumer:
Total consumer loans	357,067	356,610
Commercial	126,611	124,650
Construction:
Total construction	45,680	47,492
Total loans, net of deferred loan fees and discounts	1,612,749	1,483,546
Total principal balance of loans owed, net of charge-offs	1,617,542	1,487,240
Unamortized net deferred loan fees	(4,793)	(3,694)
Total loans, net of unamortized deferred loan fees and discounts	1,612,749	1,483,546
Noncovered loans	1,612,749	1,483,546
Total loans, net of unamortized deferred loan fees and discounts	1,612,749	1,483,546
Allowance for loan losses	(29,860)	(31,354)
Originated [Member] | Auto Indirect [Member]
Consumer:
Total consumer loans	112	946
Originated [Member] | Other [Member]
Consumer:
Total consumer loans	28,230	25,608
Originated [Member] | Residential 1-4 family [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	154,594	129,882
Originated [Member] | Commercial [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	928,797	824,912
Construction:
Total construction	24,545	17,125
Originated [Member] | Home equity lines of credit [Member]
Consumer:
Total consumer loans	305,166	316,207
Originated [Member] | Home equity loans [Member]
Consumer:
Total consumer loans	23,559	13,849
Originated [Member] | Residential [Member]
Construction:
Total construction	21,135	30,367
PNCI [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	497,046	118,153
Consumer:
Total consumer loans	50,152	15,903
Commercial	40,899	693
Construction:
Total construction	28,781
Total loans, net of deferred loan fees and discounts	616,878	134,749
Total principal balance of loans owed, net of charge-offs	634,490	142,786
Discounts to principal balance of loans owed, net of charge-offs	(17,612)	(8,037)
Total loans, net of unamortized deferred loan fees and discounts	616,878	134,749
Noncovered loans	616,878	134,749
Total loans, net of unamortized deferred loan fees and discounts	616,878	134,749
Allowance for loan losses	(3,296)	(2,850)
PNCI [Member] | Other [Member]
Consumer:
Total consumer loans	4,770	2,074
PNCI [Member] | Residential 1-4 family [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	120,821	60,475
PNCI [Member] | Commercial [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	376,225	57,678
Construction:
Total construction	11,973
PNCI [Member] | Home equity lines of credit [Member]
Consumer:
Total consumer loans	38,397	13,576
PNCI [Member] | Home equity loans [Member]
Consumer:
Total consumer loans	6,985	253
PNCI [Member] | Residential [Member]
Construction:
Total construction	16,808
PCI - Cash basis [Member]
Consumer:
Total consumer loans	5,603	6,200
Commercial	8	19
Construction:
Total loans, net of deferred loan fees and discounts	5,611	6,219
Total principal balance of loans owed, net of charge-offs	14,805	16,475
Discounts to principal balance of loans owed, net of charge-offs	(9,194)	(10,256)
Total loans, net of unamortized deferred loan fees and discounts	5,611	6,219
Noncovered loans	5,611	6,219
Total loans, net of unamortized deferred loan fees and discounts	5,611	6,219
Allowance for loan losses	(348)	(385)
PCI - Cash basis [Member] | Home equity lines of credit [Member]
Consumer:
Total consumer loans	5,478	6,200
PCI - Cash basis [Member] | Home equity loans [Member]
Consumer:
Total consumer loans	125
PCI - Other [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	34,922	34,916
Consumer:
Total consumer loans	4,262	4,450
Commercial	7,427	6,516
Construction:
Total construction	675	1,611
Total loans, net of deferred loan fees and discounts	47,286	47,493
Total principal balance of loans owed, net of charge-offs	56,016	56,879
Discounts to principal balance of loans owed, net of charge-offs	(8,730)	(9,386)
Total loans, net of unamortized deferred loan fees and discounts	47,286	47,493
Noncovered loans	25,018	19,581
Covered loans	22,268	27,912
Total loans, net of unamortized deferred loan fees and discounts	47,286	47,493
Allowance for loan losses	(3,081)	(3,656)
PCI - Other [Member] | Other [Member]
Consumer:
Total consumer loans	74	81
PCI - Other [Member] | Residential 1-4 family [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	4,005	4,656
PCI - Other [Member] | Commercial [Member]
Mortgage loans on real estate:
Total mortgage loan on real estate	30,917	30,260
Construction:
Total construction		45
PCI - Other [Member] | Home equity lines of credit [Member]
Consumer:
Total consumer loans	3,543	3,883
PCI - Other [Member] | Home equity loans [Member]
Consumer:
Total consumer loans	645	486
PCI - Other [Member] | Residential [Member]
Construction:
Total construction	$ 675	$ 1,566

XML

Stock Options and Other Equity-Based Incentive Instruments - Restricted Stock Unit (RSU) Activity (Detail) (Restricted Stock Units (RSUs) [Member], USD $)	3 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2014
Service Condition Vesting RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs outstanding, Number of RSUs, beginning balance		0
RSUs granted, Number of RSUs	13,749	30,642
RSUs added through dividend credits, Number of RSUs		278
RSUs released, Number of RSUs		0
RSUs forfeited/expired, Number of RSUs		0
RSUs outstanding, Number of RSUs, ending balance	30,920	30,920
Outstanding, Weighted Average Fair Value on Date of Grant, beginning balance		$ 0
RSUs granted, Weighted Average Fair Value on Date of Grant		$ 22.54
RSUs added through dividend credits, Weighted Average Fair Value on Date of Grant		$ 0
RSUs released, Weighted Average Fair Value on Date of Grant		$ 0
RSUs forfeited/expired, Weighted Average Fair Value on Date of Grant		$ 0
Market Plus Service Condition Vesting RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs outstanding, Number of RSUs, beginning balance		0
RSUs granted, Number of RSUs		15,366
RSUs released, Number of RSUs		0
RSUs forfeited/expired, Number of RSUs		0
RSUs outstanding, Number of RSUs, ending balance	15,366	15,366
RSUs granted, Weighted Average Fair Value on Date of Grant		$ 21.39
RSUs added through dividend credits, Weighted Average Fair Value on Date of Grant		$ 0
RSUs released, Weighted Average Fair Value on Date of Grant		$ 0
RSUs forfeited/expired, Weighted Average Fair Value on Date of Grant		$ 0

XML

Earnings Per Share - Computation of Earnings Per Share (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Net income	$ 5,650	$ 8,234	$ 4,859	$ 7,365	$ 5,236	$ 7,361	$ 6,325	$ 8,477	$ 26,108	$ 27,399	$ 18,994
Average number of common shares outstanding									17,716	16,045	15,988
Effect of dilutive stock options									207	152	64
Average number of common shares outstanding used to calculate diluted earnings per share									17,923	16,197	16,052

XML

Retirement Plans - Information Pertaining to Activity in Supplemental Retirement Plans (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Change in benefit obligation:
Benefit obligation at beginning of year	$ (14,634)	$ (16,345)
Acquisition	(4,150)
Service cost	(652)	(742)	(680)
Interest cost	(739)	(643)	(687)
Actuarial (loss)/gain	(7,254)	2,573
Benefits paid	631	523
Benefit obligation at end of year	(26,798)	(14,634)	(16,345)
Change in plan assets:
Fair value of plan assets at beginning of year
Fair value of plan assets at end of year
Funded status	(26,798)	(14,634)
Unrecognized net obligation existing at January 1, 1986	9	11
Unrecognized net actuarial loss	8,049	811
Unrecognized prior service cost	(173)	(35)
Unfunded status of the supplemental retirement plans	(7,885)	(787)
Accrued benefit cost	(26,798)	(14,634)
Accumulated benefit obligation	$ (24,739)	$ (12,954)

XML

Business Combinations - Summary of Principal Balance Loans Acquired (Detail) (North Valley Bancorp [Member], USD $) In Thousands, unless otherwise specified	Oct. 03, 2014
Business Acquisition [Line Items]
Undiscounted contractual cash flows	$ 734,437
Undiscounted cash flows not expected to be collected (nonaccretable difference)	(6,295)
Undiscounted cash flows expected to be collected	728,142
Accretable yield at acquisition	(228,815)
Estimated fair value of loans acquired at acquisition	499,327
Purchase discount	14,798
Cost Basis	514,125
PNCI [Member]
Business Acquisition [Line Items]
Undiscounted contractual cash flows	718,731
Undiscounted cash flows expected to be collected	718,731
Accretable yield at acquisition	(228,815)
Estimated fair value of loans acquired at acquisition	489,916
Purchase discount	12,721
Cost Basis	502,637
PCI - Other [Member]
Business Acquisition [Line Items]
Undiscounted contractual cash flows	15,706
Undiscounted cash flows not expected to be collected (nonaccretable difference)	(6,295)
Undiscounted cash flows expected to be collected	9,411
Estimated fair value of loans acquired at acquisition	9,411
Purchase discount	2,077
Cost Basis	$ 11,488

XML

Premises and Equipment - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Abstract]
Depreciation expense for premises and equipment	$ 4,648,000	$ 3,635,000	$ 3,250,000

XML

Stock Options and Other Equity-Based Incentive Instruments (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock Option Activity

Stock option activity is summarized in the following table for the dates indicated:

	Number of Shares			Option Price per Share					Weighted Average Exercise Price
Outstanding at December 31, 2013		1,246,370		$	12.63	to	$	25.91	$	18.04
Options granted		22,500		$	23.21	to	$	23.21	$	23.21
Options exercised		(166,020	)	$	14.54	to	$	20.58	$	17.32
Options forfeited		—			—	to		—		-
Outstanding at September 30, 2014		1,102,850		$	12.63	to	$	25.91	$	18.25

Summary of Options Outstanding

The following table shows the number, weighted-average exercise price, intrinsic value, and weighted average remaining contractual life of options exercisable, options not yet exercisable and total options outstanding as of December 31, 2014:

	Currently Exercisable		Currently Not Exercisable		Total Outstanding
Number of options		818,350		284,500		1,102,850
Weighted average exercise price	$	18.62	$	17.19	$	18.25
Intrinsic value (in thousands)	$	5,007	$	2,136	$	7,143
Weighted average remaining contractual term (yrs.)		4.5		7.6		5.3

Information about Options

The following table shows the total intrinsic value of options exercised, the total fair value of options vested, total compensation costs for options recognized in income, and total tax benefit recognized in income related to compensation costs for options during the periods indicated:

	Years Ended December 31,
	2014		2013		2012
Intrinsic value of options exercised	$	1,209,000	$	1,777,000	$	138,000
Fair value of options that vested	$	965,000	$	1,150,000	$	1,083,000
Total compensation costs for options recognized in income	$	965,000	$	1,150,000	$	1,083,000
Total tax benefit recognized in income related to compensation costs for options	$	378,000	$	484,000	$	455,000
Weighted average fair value of grants (per option)	$	8.17	$	8.91	$	6.63

Weighted-Average Assumptions Used to Determine Fair Value of Options Granted

The weighted-average assumptions used to determine the fair value of options granted are detailed in the table below:

	Years Ended December 31,
	2014			2013			2012
Assumptions used to value option grants:
Average expected terms (years)		6.3			7.0			8.8
Volatility		42.1	%		56.2	%		51.5	%
Annual rate of dividends		1.90	%		1.87	%		2.36	%
Discount rate		1.69	%		1.26	%		1.49	%

Restricted Stock Unit (RSU) Activity

Restricted stock unit (RSU) activity is summarized in the following table for the dates indicated:

	Service Condition Vesting RSUs				Market Plus Service Condition Vesting RSUs
	Number of RSUs		Weighted Average Fair Value on Date of Grant		Number of RSUs		Weighted Average Fair Value on Date of Grant
Outstanding at December 31, 2013		—		—		—		—
RSUs granted		30,642	$	22.54		15,366	$	21.39
RSUs added through dividend credits		278				—
RSUs released		—				—
RSUs forfeited/expired		—				—
Outstanding at December 31, 2014		30,920				15,366

XML

Commitments and Contingencies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014 site	Dec. 31, 2013	Dec. 31, 2012	Aug. 21, 2007
Conversion of Stock [Line Items]
Reserves to satisfy Federal regulatory requirements	$ 57,616,000	$ 38,359,000
Number of sites leased under non-cancelable operating leases	53
Rent expense under operating leases	4,786,000	4,300,000	4,332,000
Rent expense offset by rent income	225,000	216,000	138,000
Commitment expiration date	One year or less or other termination clauses and may require payment of a fee.
Letters of credit, issue period	One year or less
Overdraft privilege receivable criteria	All holders of such accounts who bring their accounts to a positive balance at least once every thirty days receive the overdraft privilege.
Class B common stock of Visa Inc.	22,714,964	16,076,662		15,814,662
Conversion ratio	0.4121
Common Class B [Member]
Conversion of Stock [Line Items]
Class B common stock of Visa Inc.	13,396
Common Class A [Member]
Conversion of Stock [Line Items]
The value of the Class A shares	$ 262.20
Value of unredeemed Class A equivalent shares	$ 1,447,000

XML

Retirement Plans - Net Periodic Benefit Cost Recognized for Supplemental Retirement Plans (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net pension cost included the following components:
Service cost-benefits earned during the period	$ 652	$ 742	$ 680
Interest cost on projected benefit obligation	739	643	687
Amortization of net obligation at transition	2	2	2
Amortization of prior service cost	138	153	153
Recognized net actuarial loss	16	291	288
Net periodic pension cost	$ 1,547	$ 1,832	$ 1,810

XML

Investment Securities - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014 Investmentsecurities	Dec. 31, 2013 Investmentsecurities	Dec. 31, 2012 Investmentsecurities
Investment Securities [Line Items]
Investment securities sold	14,130,000	0	0
Gain or loss on sale of investment securities	$ 0
Investment securities carrying value	143,992,000	62,064,000
Mortgage-backed securities	$ 755,591,000
Life of mortgage-backed securities	5 years 3 months 18 days
Obligations of U.S. government corporations and agencies [Member]
Investment Securities [Line Items]
Debt securities	8
Percentage of aggregate depreciation in unrealized losses	1.10%
Obligations of states and political subdivisions [Member]
Investment Securities [Line Items]
Debt securities	5
Percentage of aggregate depreciation in unrealized losses	4.26%
Corporate debt securities [Member]
Investment Securities [Line Items]
Debt securities	0
Marketable equity securities [Member]
Investment Securities [Line Items]
Debt securities	0

XML

TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Statements of Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Interest expense	$ (1,437)	$ (1,082)	$ (1,075)	$ (1,087)	$ (1,123)	$ (1,169)	$ (1,167)	$ (1,237)	$ (4,681)	$ (4,696)	$ (7,344)
Income before income taxes	9,580	14,235	8,396	12,405	8,642	12,271	10,597	14,294	44,616	45,804	31,931
Equity in net income of Tri Counties Bank:
Income tax benefit	3,930	6,001	3,537	5,040	3,406	4,910	4,272	5,817	18,508	18,405	12,937
Net income	5,650	8,234	4,859	7,365	5,236	7,361	6,325	8,477	26,108	27,399	18,994
Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Interest expense									(1,403)	(1,247)	(1,325)
Administration expense									(2,720)	(862)	(669)
Income before income taxes									(4,123)	(2,109)	(1,994)
Equity in net income of Tri Counties Bank:
Distributed									8,270	8,175	8,522
Undistributed									20,720	20,446	11,632
Income tax benefit									1,241	887	834
Net income									$ 26,108	$ 27,399	$ 18,994

XML

Allowance for Loan Losses - Troubled Debt Restructurings (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 SecurityLoan	Dec. 31, 2013 SecurityLoan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number	31	42
Pre-mod outstanding principal balance	$ 4,754	$ 17,389
Post-mod outstanding principal balance	4,656	17,408
Financial impact due to TDR taken as additional provision	279	602
Number that defaulted during the period	6	21
Recorded investment of TDRs that defaulted during the period	903	3,746
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions	(8)	12
Home equity lines of credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number	6	12
Pre-mod outstanding principal balance	940	1,546
Post-mod outstanding principal balance	967	1,557
Financial impact due to TDR taken as additional provision		340
Number that defaulted during the period	1	3
Recorded investment of TDRs that defaulted during the period	20	150
RE Mortgage [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number	5	9
Pre-mod outstanding principal balance	1,048	2,173
Post-mod outstanding principal balance	1,050	2,177
Financial impact due to TDR taken as additional provision	91	148
Number that defaulted during the period	2	4
Recorded investment of TDRs that defaulted during the period	344	443
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions		(3)
RE Mortgage [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number	7	11
Pre-mod outstanding principal balance	1,980	13,145
Post-mod outstanding principal balance	1,890	13,146
Financial impact due to TDR taken as additional provision	22	27
Number that defaulted during the period	2	8
Recorded investment of TDRs that defaulted during the period	423	1,702
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions		7
Home equity loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number	2	2
Pre-mod outstanding principal balance	100	251
Post-mod outstanding principal balance	102	253
Financial impact due to TDR taken as additional provision	(1)	(1)
Number that defaulted during the period		1
Recorded investment of TDRs that defaulted during the period		15
Other Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number	1
Pre-mod outstanding principal balance	147
Post-mod outstanding principal balance	147
Financial impact due to TDR taken as additional provision	66
C&I [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number	7	8
Pre-mod outstanding principal balance	218	274
Post-mod outstanding principal balance	219	275
Financial impact due to TDR taken as additional provision	101	88
Number that defaulted during the period	1	4
Recorded investment of TDRs that defaulted during the period	116	1,363
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions	(8)	3
Construction [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number	1
Pre-mod outstanding principal balance	102
Post-mod outstanding principal balance	85
Number that defaulted during the period		1
Recorded investment of TDRs that defaulted during the period		73
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions		5
Construction [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number	2
Pre-mod outstanding principal balance	219
Post-mod outstanding principal balance	$ 196

XML

Fair Value Measurement - Estimated Fair Values of Financial Instruments that are Reported at Amortized Cost in Consolidated Balance Sheets (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financial assets:
Cash and due from banks	$ 93,150,000	$ 76,915,000
Cash at Federal Reserve and other banks	517,578,000	521,453,000
Securities held to maturity	676,426,000	240,504,000
Indemnification (liability) asset	(349,000)	206,000	1,997,000	4,405,000
Financial liabilities:
Other borrowings	9,276,000	6,335,000
Junior subordinated debt	56,272,000	41,238,000
Level 3 [Member]
Financial assets:
Securities held to maturity	0	0
Contract Amount [Member] | Level 3 [Member]
Off-balance sheet:
Commitments	656,175,000	555,386,000
Standby letters of credit	17,531,000	2,601,000
Overdraft privilege commitments	101,060,000	68,932,000
Fair Value [Member] | Level 3 [Member]
Financial assets:
Loans, net	2,379,155,000	1,760,274,000
Indemnification (liability) asset	(349,000)	206,000
Off-balance sheet:
Commitments	6,562,000	5,554,000
Standby letters of credit	175,000	26,000
Overdraft privilege commitments	1,011,000	689,000
Fair Value [Member] | Level 1 [Member]
Financial assets:
Cash and due from banks	93,150,000	76,915,000
Cash at Federal Reserve and other banks	517,578,000	521,453,000
Fair Value [Member] | Level 2 [Member]
Financial assets:
Securities held to maturity	688,779,000	233,807,000
Loans held for sale	3,579,000	2,270,000
Financial liabilities:
Deposits	3,380,486,000	2,411,402,000
Other borrowings	9,276,000	6,335,000
Junior subordinated debt	45,053,000	25,774,000
Carrying Amount [Member] | Level 3 [Member]
Financial assets:
Loans, net	2,282,524,000	1,672,007,000
Indemnification (liability) asset	(349,000)	206,000
Carrying Amount [Member] | Level 1 [Member]
Financial assets:
Cash and due from banks	93,150,000	76,915,000
Cash at Federal Reserve and other banks	517,578,000	521,453,000
Carrying Amount [Member] | Level 2 [Member]
Financial assets:
Securities held to maturity	676,426,000	240,504,000
Restricted equity securities	16,956,000	9,163,000
Loans held for sale	3,579,000	2,270,000
Financial liabilities:
Deposits	3,380,423,000	2,410,483,000
Other borrowings	9,276,000	6,335,000
Junior subordinated debt	$ 56,272,000	$ 41,238,000

XML

TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Statements of Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Net income	$ 5,650	$ 8,234	$ 4,859	$ 7,365	$ 5,236	$ 7,361	$ 6,325	$ 8,477	$ 26,108	$ 27,399	$ 18,994
Other comprehensive (loss) income, net of tax:
Unrealized holding (losses) gains on securities arising during the period									(94)	(2,452)	(1,216)
Change in minimum pension liability									(4,114)	1,750	(2)
Change in joint beneficiary agreement liability									148	400	(434)
Other comprehensive (loss) income									(4,060)	(302)	(1,652)
Net income									22,048	27,097	17,342
Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Net income									26,108	27,399	18,994
Other comprehensive (loss) income, net of tax:
Unrealized holding (losses) gains on securities arising during the period									(94)	(2,452)	(1,216)
Change in minimum pension liability									(4,114)	1,750	(2)
Change in joint beneficiary agreement liability									148	400	(434)
Other comprehensive (loss) income									(4,060)	(302)	(1,652)
Net income									$ 22,048	$ 27,097	$ 17,342

XML

Allowance for Loan Losses - Summary of Activity in Allowance for Loan Losses, and Ending Balance of Loans, Net of Unearned Fees for Periods Indicated (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	$ 2,282,524	$ 1,672,007	$ 1,564,823
Individ. evaluated for impairment	62,246	81,235	101,330
Loans pooled for evaluation	2,167,381	1,537,060	1,393,925
Loans acquired with deteriorated credit quality	52,897	53,712	69,568
Beginning balance	38,245	42,648	45,914
Charge-offs	(2,558)	(7,543)	(16,484)
Recoveries	4,943	3,855	3,795
(Benefit) provision	(4,045)	(715)	9,423
Ending balance	36,585	38,245	42,648
Ending balance:
Individ. evaluated for impairment	4,267	3,975	4,505
Loans pooled for evaluation	28,891	30,230	33,233
Loans acquired with deteriorated credit quality	3,427	4,040	4,910
Home equity lines of credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	352,584	339,866	342,025
Individ. evaluated for impairment	6,968	6,918	10,056
Loans pooled for evaluation	336,595	322,865	318,403
Loans acquired with deteriorated credit quality	9,021	10,083	13,566
Beginning balance	16,375	21,367	18,258
Charge-offs	(1,094)	(2,651)	(8,042)
Recoveries	960	1,053	398
(Benefit) provision	(565)	(3,394)	10,753
Ending balance	15,676	16,375	21,367
Ending balance:
Individ. evaluated for impairment	1,974	1,140	2,264
Loans pooled for evaluation	13,251	14,749	17,862
Loans acquired with deteriorated credit quality	451	486	1,241
Other Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	33,074	27,763	26,713
Individ. evaluated for impairment	323	90	121
Loans pooled for evaluation	32,677	27,592	26,560
Loans acquired with deteriorated credit quality	74	81	32
Beginning balance	589	696	932
Charge-offs	(599)	(887)	(1,202)
Recoveries	495	759	860
(Benefit) provision	234	21	106
Ending balance	719	589	696
Ending balance:
Individ. evaluated for impairment	142	8	47
Loans pooled for evaluation	572	581	649
Loans acquired with deteriorated credit quality	5
Construction [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	38,618	31,933	18,459
Individ. evaluated for impairment	2,683	2,756	3,596
Loans pooled for evaluation	35,260	27,611	8,281
Loans acquired with deteriorated credit quality	675	1,566	6,582
Beginning balance	1,559	1,400	1,817
Charge-offs	(4)	(20)	(406)
Recoveries	1,377	63	412
(Benefit) provision	(1,498)	116	(423)
Ending balance	1,434	1,559	1,400
Ending balance:
Individ. evaluated for impairment	60	91	11
Loans pooled for evaluation	332	751	430
Loans acquired with deteriorated credit quality	1,042	717	959
Construction [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	35,518	17,170	14,595
Individ. evaluated for impairment	99	178	607
Loans pooled for evaluation	36,419	16,947	10,589
Loans acquired with deteriorated credit quality		45	3,399
Beginning balance	1,263	779	1,425
Charge-offs	(69)	(140)	(100)
Recoveries	181	65
(Benefit) provision	(964)	559	(546)
Ending balance	411	1,263	779
Ending balance:
Individ. evaluated for impairment		8	111
Loans pooled for evaluation	322	789	165
Loans acquired with deteriorated credit quality	89	466	503
RE Mortgage [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	279,420	195,013	131,684
Individ. evaluated for impairment	7,188	7,342	6,586
Loans pooled for evaluation	268,227	183,015	120,082
Loans acquired with deteriorated credit quality	4,005	4,656	5,016
Beginning balance	3,154	3,523	2,404
Charge-offs	(171)	(46)	(1,558)
Recoveries	2	345	147
(Benefit) provision	101	(668)	2,530
Ending balance	3,086	3,154	3,523
Ending balance:
Individ. evaluated for impairment	974	775	631
Loans pooled for evaluation	1,915	2,039	2,526
Loans acquired with deteriorated credit quality	197	340	366
RE Mortgage [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,335,939	912,850	878,446
Individ. evaluated for impairment	41,932	59,936	71,077
Loans pooled for evaluation	1,263,090	822,654	776,137
Loans acquired with deteriorated credit quality	30,917	30,260	31,232
Beginning balance	9,700	8,782	13,217
Charge-offs	(110)	(2,038)	(3,457)
Recoveries	540	994	1,020
(Benefit) provision	(903)	1,962	(1,998)
Ending balance	9,227	9,700	8,782
Ending balance:
Individ. evaluated for impairment	410	1,198	515
Loans pooled for evaluation	8,408	7,815	8,026
Loans acquired with deteriorated credit quality	409	687	241
Home equity loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	31,314	14,588	13,557
Individ. evaluated for impairment	1,278	778	528
Loans pooled for evaluation	29,266	13,324	12,825
Loans acquired with deteriorated credit quality	770	486	204
Beginning balance	1,208	1,155	1,101
Charge-offs	(29)	(94)	(385)
Recoveries	34	41	100
(Benefit) provision	584	106	339
Ending balance	1,797	1,208	1,155
Ending balance:
Individ. evaluated for impairment	284	169	81
Loans pooled for evaluation	1,513	1,039	995
Loans acquired with deteriorated credit quality			79
Auto Indirect [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	112	946	3,816
Individ. evaluated for impairment	18	60	197
Loans pooled for evaluation	94	886	3,619
Beginning balance	66	243	215
Charge-offs	(3)	(68)	(83)
Recoveries	86	195	215
(Benefit) provision	(140)	(304)	(104)
Ending balance	9	66	243
Ending balance:
Individ. evaluated for impairment		1	5
Loans pooled for evaluation	9	65	238
C&I [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	174,945	131,878	135,528
Individ. evaluated for impairment	1,757	3,177	8,562
Loans pooled for evaluation	165,753	122,166	117,429
Loans acquired with deteriorated credit quality	7,435	6,535	9,537
Beginning balance	4,331	4,703	6,545
Charge-offs	(479)	(1,599)	(1,251)
Recoveries	1,268	340	643
(Benefit) provision	(894)	887	(1,234)
Ending balance	4,226	4,331	4,703
Ending balance:
Individ. evaluated for impairment	423	585	840
Loans pooled for evaluation	2,569	2,402	2,342
Loans acquired with deteriorated credit quality	$ 1,234	$ 1,344	$ 1,521

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Foreclosed Assets - Summary of Activity in Balance of Foreclosed Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 Assets	Dec. 31, 2013 Assets
Schedule Of Foreclosed Assets Activity [Line Items]
Beginning balance, net	$ 6,262	$ 7,498
Acquisitions	695
Additions/transfers from loans	5,753	11,717
Dispositions/sales	(7,608)	(12,271)
Valuation adjustments	(208)	(682)
Ending balance, net	4,894	6,262
Ending valuation allowance	(208)	(414)
Ending number of foreclosed assets	29	32
Proceeds from sale of foreclosed assets	9,762	13,910
Gain on sale of foreclosed assets	2,153	1,640
Noncovered [Member]
Schedule Of Foreclosed Assets Activity [Line Items]
Beginning balance, net	5,588	5,957
Acquisitions	695
Additions/transfers from loans	5,753	11,224
Dispositions/sales	(7,391)	(10,992)
Valuation adjustments	(196)	(601)
Ending balance, net	4,449	5,588
Ending valuation allowance	(208)	(414)
Ending number of foreclosed assets	28	28
Proceeds from sale of foreclosed assets	9,517	12,483
Gain on sale of foreclosed assets	2,125	1,492
Covered [Member]
Schedule Of Foreclosed Assets Activity [Line Items]
Beginning balance, net	674	1,541
Additions/transfers from loans		493
Dispositions/sales	(217)	(1,279)
Valuation adjustments	(12)	(81)
Ending balance, net	445	674
Ending number of foreclosed assets	1	4
Proceeds from sale of foreclosed assets	245	1,427
Gain on sale of foreclosed assets	$ 28	$ 148

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Investment Securities - Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Investments, Debt and Equity Securities [Abstract]
Due in one year, Amortized Cost	$ 1,924
Due after one year through five years, Amortized Cost	1,095
Due after five years through ten years, Amortized Cost	30,977
Due after ten years, Amortized Cost	45,169
Totals, Amortized Cost	79,165
Due in one year, Amortized Cost, Held to Maturity	0
Due after one year through five years, Amortized Cost, Held to Maturity	0
Due after five years through ten years, Amortized Cost, Held to Maturity	1,118
Due after ten years, Amortized Cost, Held to Maturity	675,308
Totals, Amortized Cost, Held to Maturity	676,426	240,504
Due in one year, Estimated Fair Value	1,942
Due after one year through five years, Estimated Fair Value	1,135
Due after five years through ten years, Estimated Fair Value	32,316
Due after ten years, Estimated Fair Value	47,812
Totals, Estimated Fair Value	83,205
Due in one year, Estimated Fair Value, Held to Maturity	0
Due after one year through five years, Estimated Fair Value, Held to Maturity	0
Due after five years through ten years, Estimated Fair Value, Held to Maturity	1,106
Due after ten years, Estimated Fair Value, Held to Maturity	687,673
Estimated Fair Value, Held to Maturity	$ 688,779	$ 233,807

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Business Combinations - Summary of Estimated Fair Value Adjustments Resulting In Goodwill (Detail) (USD $)	0 Months Ended
	Oct. 03, 2014	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Cash payments to North Valley Bancorp Shareholders	$ 6,823
Goodwill		63,462,000	15,519,000
North Valley Bancorp [Member]
Business Acquisition [Line Items]
Value of stock consideration paid to North Valley Bancorp Shareholders	151,303,000
Cash payments to North Valley Bancorp Shareholders	7,000
Cost basis net assets acquired	(98,040,000)
Goodwill	47,943,000
North Valley Bancorp [Member] | Deferred income taxes [Member]
Business Acquisition [Line Items]
Fair Value Adjustments	6,293,000
North Valley Bancorp [Member] | Loans [Member]
Business Acquisition [Line Items]
Fair Value Adjustments	5,832,000
North Valley Bancorp [Member] | Premises and equipment [Member]
Business Acquisition [Line Items]
Fair Value Adjustments	(4,785,000)
North Valley Bancorp [Member] | Core deposit intangibles [Member]
Business Acquisition [Line Items]
Fair Value Adjustments	(6,283,000)
North Valley Bancorp [Member] | Junior subordinated debt [Member]
Business Acquisition [Line Items]
Fair Value Adjustments	(6,664,000)
North Valley Bancorp [Member] | Other [Member]
Business Acquisition [Line Items]
Fair Value Adjustments	$ 280,000

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Junior Subordinated Debt

12 Months Ended

Dec. 31, 2014

Text Block [Abstract]

Junior Subordinated Debt

Note 17 – Junior Subordinated Debt

On July 31, 2003, the Company formed a subsidiary business trust, TriCo Capital Trust I, to issue trust preferred securities. Concurrently with the issuance of the trust preferred securities, the trust issued 619 shares of common stock to the Company for $1,000 per share or an aggregate of $619,000. In addition, the Company issued a junior subordinated debenture to the trust in the amount of $20,619,000. The terms of the junior subordinated debenture are materially consistent with the terms of the trust preferred securities issued by TriCo Capital Trust I. Also on July 31, 2003, TriCo Capital Trust I completed an offering of 20,000 shares of cumulative trust preferred securities for cash in an aggregate amount of $20,000,000. The trust preferred securities are mandatorily redeemable upon maturity on October 7, 2033 with an interest rate that resets quarterly at three-month LIBOR plus 3.05%. TriCo Capital Trust I has the right to redeem the trust preferred securities on or after October 7, 2008. The trust preferred securities were issued through an underwriting syndicate to which the Company paid underwriting fees of $7.50 per trust preferred security or an aggregate of $150,000. The net proceeds of $19,850,000 were used to finance the opening of new branches, improve bank services and technology, repurchase shares of the Company’s common stock under its repurchase plan and increase the Company’s capital.

On June 22, 2004, the Company formed a second subsidiary business trust, TriCo Capital Trust II, to issue trust preferred securities. Concurrently with the issuance of the trust preferred securities, the trust issued 619 shares of common stock to the Company for $1,000 per share or an aggregate of $619,000. In addition, the Company issued a junior subordinated debenture to the trust in the amount of $20,619,000. The terms of the junior subordinated debenture are materially consistent with the terms of the trust preferred securities issued by TriCo Capital Trust II. Also on June 22, 2004, TriCo Capital Trust II completed an offering of 20,000 shares of cumulative trust preferred securities for cash in an aggregate amount of $20,000,000. The trust preferred securities are mandatorily redeemable upon maturity on July 23, 2034 with an interest rate that resets quarterly at three-month LIBOR plus 2.55%. TriCo Capital Trust II has the right to redeem the trust preferred securities on or after July 23, 2009. The trust preferred securities were issued through an underwriting syndicate to which the Company paid underwriting fees of $2.50 per trust preferred security or an aggregate of $50,000. The net proceeds of $19,950,000 were used to finance the opening of new branches, improve bank services and technology, repurchase shares of the Company’s common stock under its repurchase plan and increase the Company’s capital.

As a result of the Company’s acquisition of North Valley Bancorp on October 3, 2014, the Company assumed the junior subordinated debentures issued by North Valley Bancorp to North Valley Capital Trusts II, III & IV with face amounts of $6,186,000, $5,155,000 and $10,310,000, respectively. Also, as a result of the North Valley Bancorp acquisition, the Company acquired common stock interests in North Valley Capital Trusts II, III and IV with face valley of $186,000, $155,000, and $310,000, respectively. At the acquisition date of October 3, 2014, the junior subordinated debentures associated with North Valley Capital Trust II, III and IV were recorded on the Company’s books at their fair values of $5,006,000, $3,918,000, and $6,063,000, respectively. The related fair value discounts to face value of these debentures will be amortized over the remaining time to maturity for each of these debentures using the effective interest method. Similar, and proportional, discounts were applied to the acquired common stock interest in North Valley Capital Trusts II, III and IV, and these discounts will be proportionally amortized over the remaining time to maturity for each related debenture.

TriCo Capital Trusts I and II, and North Valley Capital Trusts II, III and IV are collectively referred to as the Capital Trusts. The recorded book values of the junior subordinated debentures issued by the Capital Trusts are reflected as junior subordinated debt in the Company’s consolidated balance sheets. The common stock issued by the Capital Trusts and owned by the Company is recorded in other assets in the Company’s consolidated balance sheets. The recorded book value of the debentures issued by the Capital Trusts, less the recorded book value of the common stock of the Capital Trusts owned by the Company, continues to qualify as Tier 1 or Tier 2 capital under interim guidance issued by the Board of Governors of the Federal Reserve System.

The following table summarizes the terms and recorded balance of each subordinated debenture as of the date indicated (dollars in thousands):

Subordinated Debt Series	Maturity Date		Face Value		Coupon Rate (Variable) 3 mo. LIBOR +			As of December 31, 2014
								Current Coupon Rate			Recorded Book Value
TriCo Cap Trust I		10/7/2033	$	20,619		3.05	%		3.28	%	$	20,619
TriCo Cap Trust II		7/23/2034		20,619		2.55	%		2.78	%		20,619
North Valley Trust II		4/24/2033		6,186		3.25	%		3.48	%		5,015
North Valley Trust III		4/24/2034		5,155		2.80	%		3.03	%		3,927
North Valley Trust IV		3/15/2036		10,310		1.33	%		1.57	%		6,092
			$	62,889							$	56,272

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Fair Value Measurement - Reconciliation of Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3) on Recurring Basis (Detail) (Mortgage servicing rights [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Mortgage servicing rights [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 6,165	$ 4,552
Transfers into (out of) Level 3	1,944
Change Included in Earnings	(1,301)	253
Issuances	570	1,360
Ending Balance	$ 7,378	$ 6,165

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Other Assets (Tables)

12 Months Ended

Dec. 31, 2014

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Summary of Other Assets

Other assets were comprised of (in thousands):

	As of December 31,
	2014		2013
Deferred tax asset, net (Note 22)	$	37,706	$	26,781
Prepaid expense		2,034		2,131
Software		1,327		1,318
Advanced compensation		908		1,175
Capital Trusts		1,690		1,238
Miscellaneous other assets		8,070		3,443
Total other assets	$	51,735	$	36,086

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Loans (Tables)

12 Months Ended

Dec. 31, 2014

Receivables [Abstract]

Summary of Loan Balances

A summary of loan balances follows (in thousands):

	December 31, 2014
	Originated			PNCI			PCI - Cash basis			PCI - Other			Total
Mortgage loans on real estate:
Residential 1-4 family	$	154,594		$	120,821			—		$	4,005		$	279,420
Commercial		928,797			376,225			—			30,917			1,335,939
Total mortgage loan on real estate		1,083,391			497,046			—			34,922			1,615,359
Consumer:
Home equity lines of credit		305,166			38,397		$	5,478			3,543			352,584
Home equity loans		23,559			6,985			125			645			31,314
Auto Indirect		112			—			—			—			112
Other		28,230			4,770			—			74			33,074
Total consumer loans		357,067			50,152			5,603			4,262			417,084
Commercial		126,611			40,899			8			7,427			174,945
Construction:
Residential		21,135			16,808			—			675			38,618
Commercial		24,545			11,973			—			—			36,518
Total construction		45,680			28,781			—			675			75,136
Total loans, net of deferred loan fees and discounts	$	1,612,749		$	616,878		$	5,611		$	47,286		$	2,282,524
Total principal balance of loans owed, net of charge-offs	$	1,617,542		$	634,490		$	14,805		$	56,016		$	2,322,853
Unamortized net deferred loan fees		(4,793	)		—			—			—			(4,793	)
Discounts to principal balance of loans owed, net of charge-offs		—			(17,612	)		(9,194	)		(8,730	)		(35,536	)
Total loans, net of unamortized deferred loan fees and discounts	$	1,612,749		$	616,878		$	5,611		$	47,286		$	2,282,524
Noncovered loans	$	1,612,749		$	616,878		$	5,611		$	25,018		$	2,260,256
Covered loans		—			—			—			22,268			22,268
Total loans, net of unamortized deferred loan fees and discounts	$	1,612,749		$	616,878		$	5,611		$	47,286		$	2,282,524
Allowance for loan losses	$	(29,860	)	$	(3,296	)	$	(348	)	$	(3,081	)	$	(36,585	)

A summary of loan balances follows (in thousands):

	December 31, 2013
	Originated			PNCI			PCI - Cash basis			PCI - Other			Total
Mortgage loans on real estate:
Residential 1-4 family	$	129,882		$	60,475			—		$	4,656		$	195,013
Commercial		824,912			57,678			—			30,260			912,850
Total mortgage loan on real estate		954,794			118,153			—			34,916			1,107,863
Consumer:
Home equity lines of credit		316,207			13,576		$	6,200			3,883			339,866
Home equity loans		13,849			253			—			486			14,588
Auto Indirect		946			—			—			—			946
Other		25,608			2,074			—			81			27,763
Total consumer loans		356,610			15,903			6,200			4,450			383,163
Commercial		124,650			693			19			6,516			131,878
Construction:
Residential		30,367			—			—			1,566			31,933
Commercial		17,125			—			—			45			17,170
Total construction		47,492			—			—			1,611			49,103
Total loans, net of deferred loan fees and discounts	$	1,483,546		$	134,749		$	6,219		$	47,493		$	1,672,007
Total principal balance of loans owed, net of charge-offs	$	1,487,240		$	142,786		$	16,475		$	56,879		$	1,703,380
Unamortized net deferred loan fees		(3,694	)		—			—			—			(3,694	)
Discounts to principal balance of loans owed, net of charge-offs		—			(8,037	)		(10,256	)		(9,386	)		(27,679	)
Total loans, net of unamortized deferred loan fees and discounts	$	1,483,546		$	134,749		$	6,219		$	47,493		$	1,672,007
Noncovered loans	$	1,483,546		$	134,749		$	6,219		$	19,581		$	1,644,095
Covered loans		—			—			—			27,912			27,912
Total loans, net of unamortized deferred loan fees and discounts	$	1,483,546		$	134,749		$	6,219		$	47,493		$	1,672,007
Allowance for loan losses	$	(31,354	)	$	(2,850	)	$	(385	)	$	(3,656	)	$	(38,245	)

Change in Accretable Yield for PCI

The following is a summary of the change in accretable yield for PCI – other loans during the periods indicated (in thousands):

	Year ended December 31,
	2014			2013
Change in accretable yield:
Balance at beginning of period	$	18,232		$	22,337
Accretion to interest income		(4,368	)		(6,305	)
Reclassification (to) from nonaccretable difference		1,009			2,201
Balance at end of period	$	14,873		$	18,232

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Investment Securities - Amortized Cost and Estimated Fair Values of Investments in Debt and Equity Securities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 79,165	$ 100,445
Gross Unrealized Gains	4,065	4,560
Gross Unrealized Losses	(25)	(358)
Estimated Fair Value	83,205	104,647
Amortized Cost, Held to Maturity	676,426	240,504
Gross Unrealized Gains, Held to Maturity	13,185	298
Gross Unrealized Losses, Held to Maturity	(832)	(6,995)
Estimated Fair Value, Held to Maturity	688,779	233,807
Obligations of U.S. government corporations and agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	71,144	93,055
Gross Unrealized Gains	4,001	4,445
Gross Unrealized Losses	(25)	(357)
Estimated Fair Value	75,120	97,143
Amortized Cost, Held to Maturity	660,836	227,864
Gross Unrealized Gains, Held to Maturity	13,055	298
Gross Unrealized Losses, Held to Maturity	(677)	(5,540)
Estimated Fair Value, Held to Maturity	673,214	222,622
Obligations of states and political subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,130	5,513
Gross Unrealized Gains	45	77
Gross Unrealized Losses		(1)
Estimated Fair Value	3,175	5,589
Amortized Cost, Held to Maturity	15,590	12,640
Gross Unrealized Gains, Held to Maturity	130
Gross Unrealized Losses, Held to Maturity	(155)	(1,455)
Estimated Fair Value, Held to Maturity	15,565	11,185
Corporate debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,891	1,877
Gross Unrealized Gains	17	38
Estimated Fair Value	1,908	1,915
Marketable equity securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,000
Gross Unrealized Gains	2
Estimated Fair Value	$ 3,002

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Indemnification Asset - Summary of Activity in Balance of Indemnification Asset (Liability) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
FDIC Indemnification Asset [Roll Forward]
Beginning balance	$ 206	$ 1,997	$ 4,405
Effect of actual covered losses (recoveries) and increase (decrease) in estimated future covered losses	(869)	(1,419)	(245)
Reimbursable (revenue) expenses incurred	69	(159)	69
Payments made (received)	245	(213)	(2,232)
Ending balance	$ (349)	$ 206	$ 1,997

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Regulatory Matters

12 Months Ended

Dec. 31, 2014

Banking and Thrift [Abstract]

Regulatory Matters

Note 29 - Regulatory Matters

The Company is subject to various regulatory capital requirements administered by federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory, and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company must meet specific capital guidelines that involve quantitative measures of the Company’s assets, liabilities and certain off-balance-sheet items as calculated under regulatory accounting practices. The Company’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors.

Quantitative measures established by regulation to ensure capital adequacy require the Company to maintain minimum amounts and ratios (set forth in the table below) of total and Tier 1 capital to risk-weighted assets, and of Tier 1 capital to average assets. Management believes, as of December 31, 2014, that the Company meets all capital adequacy requirements to which it is subject.

As of December 31, 2014, the Bank was well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized the Bank must maintain minimum total risk-based, Tier 1 risk-based and Tier 1 leverage ratios as set forth in the table below. There are no conditions or events since that date that Management believes have changed the institution’s category. The Bank’s actual capital amounts and ratios are also presented in the table.

	Actual					Minimum Capital Requirement					Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio			Amount		Ratio			Amount		Ratio
	(dollars in thousands)
As of December 31, 2014:
Total Capital (to Risk Weighted Assets):
Consolidated	$	436,955		15.63	%	$	223,603		8.0	%		N/A		N/A
Tri Counties Bank	$	433,286		15.51	%	$	223,449		8.0	%	$	279,311		10.0	%
Tier 1 Capital (to Risk Weighted Assets):
Consolidated	$	401,971		14.38	%	$	111,801		4.0	%		N/A		N/A
Tri Counties Bank	$	398,325		14.26	%	$	111,724		4.0	%	$	167,587		6.0	%
Tier 1 Capital (to Average Assets):
Consolidated	$	401,971		10.80	%	$	148,819		4.0	%		N/A		N/A
Tri Counties Bank	$	398,325		10.71	%	$	148,734		4.0	%	$	185,918		5.0	%
As of December 31, 2013:
Total Capital (to Risk Weighted Assets):
Consolidated	$	297,429		14.77	%	$	161,064		8.0	%		N/A		N/A
Tri Counties Bank	$	295,212		14.67	%	$	160,961		8.0	%	$	201,201		10.0	%
Tier 1 Capital (to Risk Weighted Assets):
Consolidated	$	272,071		13.51	%	$	80,532		4.0	%		N/A		N/A
Tri Counties Bank	$	269,870		13.41	%	$	80,480		4.0	%	$	120,720		6.0	%
Tier 1 Capital (to Average Assets):
Consolidated	$	272,071		10.17	%	$	107,017		4.0	%		N/A		N/A
Tri Counties Bank	$	269,870		10.09	%	$	106,965		4.0	%	$	133,706		5.0	%

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Reserve for Unfunded Commitments (Tables)

12 Months Ended

Dec. 31, 2014

Text Block [Abstract]

Summary of Activity in Reserve for Unfunded Commitments

The following tables summarize the activity in reserve for unfunded commitments for the periods indicated (dollars in thousands):

	Years ended December 31,
	2014			2013			2012
Balance at beginning of period	$	2,415		$	3,615		$	2,740
Acquisitions		125			—			—
Provision for losses – Unfunded commitments		(395	)		(1,200	)		875
Balance at end of period	$	2,145		$	2,415		$	3,615

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Summary of Quarterly Results of Operations (unaudited) (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Results of Operations

The following table sets forth the results of operations for the four quarters of 2014 and 2013, and is unaudited; however, in the opinion of Management, it reflects all adjustments (which include only normal recurring adjustments) necessary to present fairly the summarized results for such periods.

	2014 Quarters Ended
	December 31,			September 30,			June 30,		March 31,
	(dollars in thousands, except per share data)
Interest and dividend income:
Loans:
Discount accretion PCI – cash basis	$	107		$	290		$	69	$	203
Discount accretion PCI – other		919			822			811		984
Discount accretion PNCI		796			402			624		379
All other loan interest income		28,914			23,466			22,929		22,172
Total loan interest income		30,736			24,980			24,433		23,738
Debt securities, dividends and interest bearing cash at Banks (not FTE)		5,671			4,151			3,985		3,421
Total interest income		36,407			29,131			28,418		27,159
Interest expense		1,437			1,082			1,075		1,087
Net interest income		34,970			28,049			27,343		26,072
(Benefit from) provision for loan losses		(1,421	)		(2,977	)		1,708		(1,355	)
Net interest income after provision for loan losses		36,391			31,026			25,635		27,427
Noninterest income		9,755			8,589			7,877		8,295
Noninterest expense		36,566			25,380			25,116		23,317
Income before income taxes		9,580			14,235			8,396		12,405
Income tax expense		3,930			6,001			3,537		5,040
Net income	$	5,650		$	8,234		$	4,859	$	7,365
Per common share:
Net income (diluted)	$	0.25		$	0.50		$	0.30	$	0.45
Dividends	$	0.11		$	0.11		$	0.11	$	0.11

	2013 Quarters Ended
	December 31,		September 30,			June 30,		March 31,
	(dollars in thousands, except per share data)
Interest and dividend income:
Loans:
Discount accretion PCI – cash basis	$	255	$	140		$	129	$	167
Discount accretion PCI – other		893		898			732		597
Discount accretion PNCI		568		1,115			815		766
All other loan interest income		22,754		22,970			22,207		22,542
Total loan interest income		24,470		25,123			23,883		24,072
Debt securities, dividends and interest bearing cash at Banks (not FTE)		2,992		2,413			1,873		1,734
Total interest income		27,462		27,536			25,756		25,806
Interest expense		1,123		1,169			1,167		1,237
Net interest income		26,339		26,367			24,589		24,569
Provision for (benefit from) loan losses		172		(393	)		614		(1,108	)
Net interest income after provision for loan losses		26,167		26,760			23,975		25,677
Noninterest income		7,353		9,127			10,131		10,218
Noninterest expense		24,878		23,616			23,509		21,601
Income before income taxes		8,642		12,271			10,597		14,294
Income tax expense		3,406		4,910			4,272		5,817
Net income	$	5,236	$	7,361		$	6,325	$	8,477
Per common share:
Net income (diluted)	$	0.32	$	0.45		$	0.39	$	0.53
Dividends	$	0.11	$	0.11		$	0.11	$	0.09

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Commitments and Contingencies - Summary of Bank's Commitments and Contingent Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit
Real estate construction loans [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	49,774	22,897
Deposit account overdraft privilege [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	101,060	68,932
RE Mortgage [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	36,139	35,309
Standby letters of credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	17,531	2,601
Commercial [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	177,557	136,986
Other Consumer [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	$ 392,705	$ 360,194

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Regulatory Matters - Actual Capital Amounts and Ratios of Bank (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 279,311	$ 201,201
Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	167,587	120,720
Tier 1 Capital (to Average Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	185,918	133,706
Total Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10.00%	10.00%
Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.00%	6.00%
Tier 1 Capital (to Average Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.00%	5.00%
Parent [Member]
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Actual, Amount	436,955	297,429
Tier 1 Capital (to Risk Weighted Assets), Actual, Amount	401,971	272,071
Tier 1 Capital (to Average Assets), Actual, Amount	401,971	272,071
Total Capital (to Risk Weighted Assets), Actual, Ratio	15.63%	14.77%
Tier 1 Capital (to Risk Weighted Assets), Actual, Ratio	14.38%	13.51%
Tier 1 Capital (to Average Assets), Actual, Ratio	10.80%	10.17%
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	223,603	161,064
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	111,801	80,532
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Amount	148,819	107,017
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	8.00%	8.00%
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	4.00%	4.00%
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Ratio	4.00%	4.00%
Tri Countries Bank [Member]
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Actual, Amount	433,286	295,212
Tier 1 Capital (to Risk Weighted Assets), Actual, Amount	398,325	269,870
Tier 1 Capital (to Average Assets), Actual, Amount	398,325	269,870
Total Capital (to Risk Weighted Assets), Actual, Ratio	15.51%	14.67%
Tier 1 Capital (to Risk Weighted Assets), Actual, Ratio	14.26%	13.41%
Tier 1 Capital (to Average Assets), Actual, Ratio	10.71%	10.09%
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	223,449	160,961
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	111,724	80,480
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Amount	$ 148,734	$ 106,965
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	8.00%	8.00%
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	4.00%	4.00%
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Ratio	4.00%	4.00%

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Comprehensive Income (Tables)

12 Months Ended

Dec. 31, 2014

Equity [Abstract]

Components of Other Comprehensive Income and Related Tax Effects

The components of other comprehensive income and related tax effects are as follows:

	Years Ended December 31,
	2014			2013			2012
	(in thousands)
Unrealized holding (losses) gains on available for sale securities before reclassifications	$	(162	)	$	(4,232	)	$	(2,096	)
Amounts reclassified out of accumulated other comprehensive income		—			—			—
Unrealized holding (losses) gains on available for sale securities after reclassifications		(162	)		(4,232	)		(2,096	)
Tax effect		68			1,780			880
Unrealized holding (losses) gains on available for sale securities, net of tax		(94	)		(2,452	)		(1,216	)
Change in unfunded status of the supplemental retirement plans before reclassifications		(7,253	)		2,575			(445	)
Amounts reclassified out of accumulated other comprehensive income:
Amortization of prior service cost		138			153			153
Amortization of actuarial losses		17			291			288
Total amounts reclassified out of accumulated other comprehensive income		155			444			441
Change in unfunded status of the supplemental retirement plans after reclassifications		(7,098	)		3,019			(4	)
Tax effect		2,984			(1,269	)		2
Change in unfunded status of the supplemental retirement plans, net of tax		(4,114	)		1,750			(2	)
Change in joint beneficiary agreement liability before reclassifications		148			400			(370	)
Amounts reclassified out of accumulated other comprehensive income		—			—			—
Change in joint beneficiary agreement liability after reclassifications		148			400			(370	)
Tax effect		—			—			(64	)
Change in joint beneficiary agreement liability, net of tax		148			400			(434	)
Total other comprehensive (loss) income	$	(4,060	)	$	(302	)	$	(1,652	)

Components of Accumulated Other Comprehensive Income

The components of accumulated other comprehensive income, included in shareholders’ equity, are as follows:

	December 31,
	2014			2013
	(in thousands)
Net unrealized gains on available for sale securities	$	4,040		$	4,202
Tax effect		(1,699	)		(1,767	)
Unrealized holding gains on available for sale securities, net of tax		2,341			2,435
Unfunded status of the supplemental retirement plans		(7,885	)		(787	)
Tax effect		3,315			331
Unfunded status of the supplemental retirement plans, net of tax		(4,570	)		(456	)
Joint beneficiary agreement liability		26			(122	)
Tax effect		—			—
Joint beneficiary agreement liability, net of tax		26			(122	)
Accumulated other comprehensive income	$	(2,203	)	$	1,857

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Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Goodwill Intangible

The following table summarizes the Company’s goodwill intangible as of the dates indicated:

(Dollar in Thousands)	December 31, 2014		Additions		Reductions		December 31, 2013
Goodwill	$	63,462	$	47,943		—	$	15,519

Summary of Core Deposit Intangibles

The following table summarizes the Company’s core deposit intangibles as of the dates indicated:

(Dollar in Thousands)	December 31, 2014			Additions		Reductions/ Amortization			Fully Depreciated		December 31, 2013
Core deposit intangibles	$	8,074		$	6,614		—			—	$	1,460
Accumulated amortization		(1,023	)		—	$	(446	)		—		(577	)
Core deposit intangibles, net	$	7,051		$	6,614	$	(446	)		—	$	883

Estimated Core Deposit Intangible Amortization

The following table summarizes the Company’s estimated core deposit intangible amortization (dollars in thousands):

Years Ended	Estimated Core Deposit Intangible Amortization
2015	$	1,157
2016		1,157
2017		1,109
2018		1,044
2019		948
Thereafter	$	1,636

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Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Note 1 – Summary of Significant Accounting Policies

Description of Business and Basis of Presentation

TriCo Bancshares (the “Company”) is a California corporation organized to act as a bank holding company for Tri Counties Bank (the “Bank”). The Company and the Bank are headquartered in Chico, California. The Bank is a California-chartered bank that is engaged in the general commercial banking business in 26 California counties. Tri Counties Bank currently operates from 57 traditional branches and 16 in-store branches. The Company has five capital subsidiary business trusts (collectively, the Capital Trusts) that issued trust preferred securities, including two organized by TriCo and three acquired with the acquisition of North Valley Bancorp. See Note 17 – Junior Subordinated Debt.

The consolidated financial statements are prepared in accordance with accounting policies generally accepted in the United States of America and general practices in the banking industry. The financial statements include the accounts of the Company. All inter-company accounts and transactions have been eliminated in consolidation. For financial reporting purposes, the Company’s investments in the Capital Trusts of $1,690,000 are accounted for under the equity method and, accordingly, are not consolidated and are included in other assets on the consolidated balance sheet. The subordinated debentures issued and guaranteed by the Company and held by the Capital Trusts are reflected as debt on the Company’s consolidated balance sheet.

Use of Estimates in the Preparation of Financial Statements

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires Management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. On an on-going basis, the Company evaluates its estimates, including those related to the adequacy of the allowance for loan losses, investments, intangible assets, income taxes and contingencies. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions. The allowance for loan losses, indemnification asset, foreclosed assets, goodwill and other intangible assets, income taxes, fair value of assets acquired and liabilities assumed in business combinations, the valuation of securities available-for-sale, and the valuation of mortgage servicing rights are the only accounting estimates that materially affect the Company’s consolidated financial statements.

As described in Note 2, the Company acquired North Valley Bancorp on October 3, 2014. The acquired assets and assumed liabilities were measured at estimated fair value values under the acquisition method of accounting. The Company made significant estimates and exercised significant judgment in accounting for the acquisition. The Company determined loan fair values based on loan file reviews, loan risk ratings, appraised collateral values, expected cash flows and historical loss factors. Foreclosed assets were primarily valued based on appraised values of the repossessed loan collateral. Land and building were valued based on appraised values. An identifiable intangible was also recorded representing the fair value of the core deposit customer base based on an evaluation of the cost of such deposits relative to alternative funding sources. The fair value of time deposits and borrowings were determined based on the present value of estimated future cash flows using current rates as of the acquisition date.

Significant Group Concentration of Credit Risk

The Company grants agribusiness, commercial, consumer, and residential loans to customers located throughout the northern San Joaquin Valley, the Sacramento Valley and northern mountain regions of California. The Company has a diversified loan portfolio within the business segments located in this geographical area. The Company currently classifies all its operation into one business segment that it denotes as community banking.

Cash and Cash Equivalents

For purposes of the consolidated statements of cash flows, cash and cash equivalents include cash on hand, amounts due from banks, and federal funds sold. Net cash flows are reported for loan and deposit transactions and other borrowings.

Investment Securities

The Company classifies its debt and marketable equity securities into one of three categories: trading, available for sale or held to maturity. Trading securities are bought and held principally for the purpose of selling in the near term. Held to maturity securities are those securities which the Company has the ability and intent to hold until maturity. These securities are carried at cost adjusted for amortization of premium and accretion of discount, computed by the effective interest method over their contractual lives. All other securities not included in trading or held to maturity are classified as available for sale. Available for sale securities are recorded at fair value. Unrealized gains and losses, net of the related tax effect, on available for sale securities are reported as a separate component of other accumulated comprehensive income in shareholders’ equity until realized. Premiums and discounts are amortized or accreted over the life of the related investment security as an adjustment to yield using the effective interest method. Dividend and interest income are recognized when earned. Realized gains and losses are derived from the amortized cost of the security sold. During the years ended December 31, 2014 and 2013, the Company did not have any securities classified as trading.

The Company assesses other-than-temporary impairment (“OTTI”) based on whether it intends to sell a security or if it is likely that the Company would be required to sell the security before recovery of the amortized cost basis of the investment, which may be maturity. For debt securities, if we intend to sell the security or it is likely that we will be required to sell the security before recovering its cost basis, the entire impairment loss would be recognized in earnings as an OTTI. If we do not intend to sell the security and it is not likely that we will be required to sell the security but we do not expect to recover the entire amortized cost basis of the security, only the portion of the impairment loss representing credit losses would be recognized in earnings. The credit loss on a security is measured as the difference between the amortized cost basis and the present value of the cash flows expected to be collected. Projected cash flows are discounted by the original or current effective interest rate depending on the nature of the security being measured for potential OTTI. The remaining impairment related to all other factors, the difference between the present value of the cash flows expected to be collected and fair value, is recognized as a charge to other comprehensive income (“OCI”). Impairment losses related to all other factors are presented as separate categories within OCI. The accretion of the amount recorded in OCI increases the carrying value of the investment and does not affect earnings. If there is an indication of additional credit losses the security is re-evaluated according to the procedures described above. No OTTI losses were recognized during the years ended December 31, 2014 and 2013.

Restricted Equity Securities

Restricted equity securities represent the Company’s investment in the stock of the Federal Home Loan Bank of San Francisco (“FHLB”) and are carried at par value, which reasonably approximates its fair value. While technically these are considered equity securities, there is no market for the FHLB stock. Therefore, the shares are considered as restricted investment securities. Management periodically evaluates FHLB stock for other-than-temporary impairment. Management’s determination of whether these investments are impaired is based on its assessment of the ultimate recoverability of cost rather than by recognizing temporary declines in value. The determination of whether a decline affects the ultimate recoverability of cost is influenced by criteria such as (1) the significance of any decline in net assets of the FHLB as compared to the capital stock amount for the FHLB and the length of time this situation has persisted, (2) commitments by the FHLB to make payments required by law or regulation and the level of such payments in relation to the operating performance of the FHLB, (3) the impact of legislative and regulatory changes on institutions and, accordingly, the customer base of the FHLB, and (4) the liquidity position of the FHLB.

As a member of the FHLB system, the Company is required to maintain a minimum level of investment in FHLB stock based on specific percentages of its outstanding mortgages, total assets, or FHLB advances. The Company may request redemption at par value of any stock in excess of the minimum required investment. Stock redemptions are at the discretion of the FHLB.

Loans Held for Sale

Loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or fair value, as determined by aggregate outstanding commitments from investors of current investor yield requirements. Net unrealized losses are recognized through a valuation allowance by charges to noninterest income.

Mortgage loans held for sale are generally sold with the mortgage servicing rights retained by the Company. Gains or losses on the sale of loans that are held for sale are recognized at the time of the sale and determined by the difference between net sale proceeds and the net book value of the loans less the estimated fair value of any retained mortgage servicing rights.

Loans and Allowance for Loan Losses

Loans originated by the Company, i.e., not purchased or acquired in a business combination, are referred to as originated loans. Originated loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at the principal amount outstanding, net of deferred loan fees and costs. Loan origination and commitment fees and certain direct loan origination costs are deferred, and the net amount is amortized as an adjustment of the related loan’s yield over the actual life of the loan. Originated loans on which the accrual of interest has been discontinued are designated as nonaccrual loans.

Originated loans are placed in nonaccrual status when reasonable doubt exists as to the full, timely collection of interest or principal, or a loan becomes contractually past due by 90 days or more with respect to interest or principal and is not well secured and in the process of collection. When an originated loan is placed on nonaccrual status, all interest previously accrued but not collected is reversed. Income on such loans is then recognized only to the extent that cash is received and where the future collection of principal is probable. Interest accruals are resumed on such loans only when they are brought fully current with respect to interest and principal and when, in the judgment of Management, the loan is estimated to be fully collectible as to both principal and interest.

An allowance for loan losses for originated loans is established through a provision for loan losses charged to expense. The allowance is maintained at a level which, in Management’s judgment, is adequate to absorb probable incurred credit losses inherent in the loan portfolio as of the balance sheet date. Originated loans and deposit related overdrafts are charged against the allowance for loan losses when Management believes that the collectability of the principal is unlikely or, with respect to consumer installment loans, according to an established delinquency schedule. The allowance is an amount that Management believes will be adequate to absorb probable incurred losses inherent in existing loans and leases, based on evaluations of the collectability, impairment and prior loss experience of loans and leases. The evaluations take into consideration such factors as changes in the nature and size of the portfolio, overall portfolio quality, loan concentrations, specific problem loans, and current economic conditions that may affect the borrower’s ability to pay. The Company defines an originated loan as impaired when it is probable the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement. Impaired originated loans are measured based on the present value of expected future cash flows discounted at the loan’s original effective interest rate. As a practical expedient, impairment may be measured based on the loan’s observable market price or the fair value of the collateral if the loan is collateral dependent. When the measure of the impaired loan is less than the recorded investment in the loan, the impairment is recorded through a valuation allowance.

In situations related to originated loans where, for economic or legal reasons related to a borrower’s financial difficulties, the Company grants a concession for other than an insignificant period of time to the borrower that the Company would not otherwise consider, the related loan is classified as a troubled debt restructuring (TDR). The Company strives to identify borrowers in financial difficulty early and work with them to modify to more affordable terms before their loan reaches nonaccrual status. These modified terms may include rate reductions, principal forgiveness, payment forbearance and other actions intended to minimize the economic loss and to avoid foreclosure or repossession of the collateral. In cases where the Company grants the borrower new terms that result in the loan being classified as a TDR, the Company measures any impairment on the restructuring as noted above for impaired loans. TDR loans are classified as impaired until they are fully paid off or charged off. Loans that are in nonaccrual status at the time they become TDR loans, remain in nonaccrual status until the borrower demonstrates a sustained period of performance which the Company generally believes to be six consecutive months of payments, or equivalent. Otherwise, TDR loans are subject to the same nonaccrual and charge-off policies as noted above with respect to their restructured principal balance.

Credit risk is inherent in the business of lending. As a result, the Company maintains an allowance for loan losses to absorb probable incurred losses inherent in the Company’s originated loan portfolio. This is maintained through periodic charges to earnings. These charges are included in the Consolidated Statements of Income as provision for loan losses. All specifically identifiable and quantifiable losses are immediately charged off against the allowance. However, for a variety of reasons, not all losses are immediately known to the Company and, of those that are known, the full extent of the loss may not be quantifiable at that point in time. The balance of the Company’s allowance for originated loan losses is meant to be an estimate of these unknown but probable losses inherent in the portfolio.

The Company formally assesses the adequacy of the allowance for originated loan losses on a quarterly basis. Determination of the adequacy is based on ongoing assessments of the probable risk in the outstanding originated loan portfolio, and to a lesser extent the Company’s originated loan commitments. These assessments include the periodic re-grading of credits based on changes in their individual credit characteristics including delinquency, seasoning, recent financial performance of the borrower, economic factors, changes in the interest rate environment, growth of the portfolio as a whole or by segment, and other factors as warranted. Loans are initially graded when originated. They are re-graded as they are renewed, when there is a new loan to the same borrower, when identified facts demonstrate heightened risk of nonpayment, or if they become delinquent. Re-grading of larger problem loans occurs at least quarterly. Confirmation of the quality of the grading process is obtained by independent credit reviews conducted by consultants specifically hired for this purpose and by various bank regulatory agencies.

The Company’s method for assessing the appropriateness of the allowance for originated loan losses includes specific allowances for impaired originated loans and leases, formula allowance factors for pools of credits, and allowances for changing environmental factors (e.g., interest rates, growth, economic conditions, etc.). Allowance factors for loan pools were based on historical loss experience by product type and prior risk rating.

During the three months ended March 31, 2013, the Company changed the method it uses to estimate net sale proceeds from real estate collateral sales when calculating the allowance for loan losses associated with impaired real estate collateral dependent loans. Previously, the Company used the greater of fifteen percent or actual estimated selling costs. Currently, the Company uses the actual estimated selling costs, and an adjustment to appraised value based on the age of the appraisal. These changes are intended to more accurately reflect the estimated net sale proceeds from the sale of impaired collateral dependent real estate loans. This change in methodology resulted in the allowance for loan losses as of March 31, 2013 being $494,000 more than it would have been without this change in methodology.

During the three months ended June 30, 2013, the Company modified its loss migration analysis methodology used to determine the formula allowance factors. When the Company originally established its loss migration analysis methodology during the quarter ended March 31, 2012, it reviewed the loss experience of each rolling twelve month period over the previous three years in order to calculate an annualized loss rate by loan category and risk rating. The use of three years of loss experience data was originally used because that was the extent of the detailed loss data by loan category and risk rating that was available at the time. This three year historical look-back period was used through the quarter ended March 31, 2013. Starting with the quarter ended June 30, 2013, the Company reviews all available detailed loss experience data, going back to, and including, the twelve month period ended June 30, 2009, and does not limit the look-back period to the most recent three years of historical loss data. Using this data, the Company calculates loss factors for each quarter from the quarter ended June 30, 2009 to the most recent quarter. The Company then calculates a weighted average formula allowance factor for each loan category and risk rating with the most recent quarterly loss factor being weighted 125%, the quarter ended June 30, 2009 loss factor being weighted 75%, and the loss factors for all the quarters between the most recent quarter and the quarter ended June 30, 2009, being weighted on a linear scale from 75% to 125%. This change is intended to more accurately reflect the risk inherent in the loan portfolio by considering historical loss data for all years as the data for new periods becomes available. This change in methodology resulted in the allowance for loan losses as of June 30, 2013 being $1,314,000 more than it would have been without this change in methodology.

During the three months ended September 30, 2013, the Company modified its methodology used to determine the allowance for changing environmental factors. Previously, the Company compared the current value of each environmental factor to a fixed baseline value. The deviation of the current value from the baseline value was then multiplied by a conversion factor to determine the required allowance related to each environmental factor. As of September 30, 2013, the Company replaced the fixed baseline values with average baseline values derived from historical averages, and adjusted the conversion factors. This change is intended to more accurately reflect the risk inherent in the portfolio by recognizing that baseline, or normal, levels for environmental factors may change over time. This change in methodology resulted in the allowance for loan losses as of September 30, 2013 being $1,665,000 more than it would have been without this change in methodology.

During the three months ended March 31, 2014, the Company modified its methodology used to determine the allowance for changing environmental factors by adding a new environmental factor based on the California Home Affordability Index (“CHAI”). The CHAI measures the percentage of households in California that can afford to purchase the median priced home in California based on current home prices and mortgage interest rates. The use of the CHAI environmental factor consists of comparing the current CHAI to its historical baseline, and allows management to consider the adverse impact that a lower than historical CHAI may have on general economic activity and the performance of our borrowers. Based on an analysis of historical data, management believes this environmental factor gives a better estimate of current economic activity compared to other environmental factors that may lag current economic activity to some extent. This change in methodology resulted in no change to the allowance for loan losses as of March 31, 2014 compared to what it would have been without this change in methodology.

During the three months ended June 30, 2014, the Company refined the method it uses to evaluate historical losses for the purpose of estimating the pool allowance for unimpaired loans. In the third quarter of 2010, the Company moved from a six point grading system (Grades A-F) to a nine point risk rating system (Risk Ratings 1-9), primarily to allow for more distinction within the “Pass” risk rating. Initially, there was not sufficient loss experience within the nine point scale to complete a migration analysis for all nine risk ratings, all loans risk rated Pass or 2-5 were grouped together, a loss rate was calculated for that group, and that loss rate was established as the loss rate for risk rating 4. The reserve ratios for risk ratings 2, 3 and 5 were then interpolated from that figure. As of June 30, 2014, the Company was able to compile twelve quarters of historical loss information for all risk ratings and use that information to calculate the loss rates for each of the nine risk ratings without interpolation. This refinement led to an increase of $1,438,000 in the reserve requirement for unimpaired loans, driven primarily by home equity lines of credit with a risk rating of 5 or “Pass-Watch.”

Loans purchased or acquired in a business combination are referred to as acquired loans. Acquired loans are valued as of the acquisition date in accordance with Financial Accounting Standards Board Accounting Standards Codification (“FASB ASC”) Topic 805, Business Combinations. Loans acquired with evidence of credit deterioration since origination for which it is probable that all contractually required payments will not be collected are referred to as purchased credit impaired (PCI) loans. PCI loans are accounted for under FASB ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality. Under FASB ASC Topic 805 and FASB ASC Topic 310-30, PCI loans are recorded at fair value at acquisition date, factoring in credit losses expected to be incurred over the life of the loan. Accordingly, an allowance for loan losses is not carried over or recorded as of the acquisition date. Fair value is defined as the present value of the future estimated principal and interest payments of the loan, with the discount rate used in the present value calculation representing the estimated effective yield of the loan. Default rates, loss severity, and prepayment speed assumptions are periodically reassessed and our estimate of future payments is adjusted accordingly. The difference between contractual future payments and estimated future payments is referred to as the nonaccretable difference. The difference between estimated future payments and the present value of the estimated future payments is referred to as the accretable yield. The accretable yield represents the amount that is expected to be recorded as interest income over the remaining life of the loan. If after acquisition, the Company determines that the estimated future cash flows of a PCI loan are expected to be more than originally estimated, an increase in the discount rate (effective yield) would be made such that the newly increased accretable yield would be recognized, on a level yield basis, over the remaining estimated life of the loan. If, after acquisition, the Company determines that the estimated future cash flows of a PCI loan are expected to be less than previously estimated, the discount rate would first be reduced until the present value of the reduced cash flow estimate equals the previous present value however, the discount rate may not be lowered below its original level at acquisition. If the discount rate has been lowered to its original level and the present value has not been sufficiently lowered, an allowance for loan loss would be established through a provision for loan losses charged to expense to decrease the present value to the required level. If the estimated cash flows improve after an allowance has been established for a loan, the allowance may be partially or fully reversed depending on the improvement in the estimated cash flows. Only after the allowance has been fully reversed may the discount rate be increased. PCI loans are put on nonaccrual status when cash flows cannot be reasonably estimated. PCI loans on nonaccrual status are accounted for using the cost recovery method or cash basis method of income recognition. The Company refers to PCI loans on nonaccrual status that are accounted for using the cash basis method of income recognition as “PCI – cash basis” loans; and the Company refers to all other PCI loans as “PCI – other” loans PCI loans are charged off when evidence suggests cash flows are not recoverable. Foreclosed assets from PCI loans are recorded in foreclosed assets at fair value with the fair value at time of foreclosure representing cash flow from the loan. ASC 310-30 allows PCI loans with similar risk characteristics and acquisition time frame to be “pooled” and have their cash flows aggregated as if they were one loan. The Company elected to use the “pooled” method of ASC 310-30 for PCI – other loans in the acquisition of certain assets and liabilities of Granite Community Bank, N.A. (“Granite”) during 2010 and Citizens Bank of Northern California (“Citizens”) during 2011.

Acquired loans that are not PCI loans are referred to as purchased not credit impaired (PNCI) loans. PNCI loans are accounted for under FASB ASC Topic 310-20, Receivables – Nonrefundable Fees and Other Costs, in which interest income is accrued on a level-yield basis for performing loans. For income recognition purposes, this method assumes that all contractual cash flows will be collected, and no allowance for loan losses is established at the time of acquisition. Post-acquisition date, an allowance for loan losses may need to be established for acquired loans through a provision charged to earnings for credit losses incurred subsequent to acquisition. Under ASC 310-20, the loss would be measured based on the probable shortfall in relation to the contractual note requirements, consistent with our allowance for loan loss policy for similar loans.

Throughout these financial statements, and in particular in Note 4 and Note 5, when we refer to “Loans” or “Allowance for loan losses” we mean all categories of loans, including Originated, PNCI, PCI – cash basis, and PCI – other. When we are not referring to all categories of loans, we will indicate which we are referring to – Originated, PNCI, PCI – cash basis, or PCI – other.

When referring to PNCI and PCI loans we will use the terms “nonaccretable difference”, “accretable yield”, or “purchase discount”. Nonaccretable difference is the difference between undiscounted contractual cash flows due and undiscounted cash flows we expect to collect, or put another way, it is the undiscounted contractual cash flows we do not expect to collect. Accretable yield is the difference between undiscounted cash flows we expect to collect and the value at which we have recorded the loan on our financial statements. On the date of acquisition, all purchased loans are recorded on our consolidated financial statements at estimated fair value. Purchase discount is the difference between the estimated fair value of loans on the date of acquisition and the principal amount owed by the borrower, net of charge offs, on the date of acquisition. We may also refer to “discounts to principal balance of loans owed, net of charge-offs”. Discounts to principal balance of loans owed, net of charge-offs is the difference between principal balance of loans owed, net of charge-offs, and loans as recorded on our financial statements. Discounts to principal balance of loans owed, net of charge-offs arise from purchase discounts, and equal the purchase discount on the acquisition date.

Loans are also categorized as “covered” or “noncovered”. Covered loans refer to loans covered by a Federal Deposit Insurance Corporation (“FDIC”) loss sharing agreement. Noncovered loans refer to loans not covered by a FDIC loss sharing agreement.

Foreclosed Assets

Foreclosed assets include assets acquired through, or in lieu of, loan foreclosure. Foreclosed assets are held for sale and are initially recorded at fair value less estimated costs to sell at the date of foreclosure, establishing a new cost basis. Subsequent to foreclosure, management periodically performs valuations and the assets are carried at the lower of carrying amount or fair value less cost to sell. Revenue and expenses from operations and changes in the valuation allowance are included in other noninterest expense. Gain or loss on sale of foreclosed assets is included in noninterest income. Foreclosed assets that are not subject to a FDIC loss-share agreement are referred to as noncovered foreclosed assets.

Foreclosed assets acquired through FDIC-assisted acquisitions that are subject to a FDIC loss-share agreement, and all assets acquired via foreclosure of covered loans are referred to as covered foreclosed assets. Covered foreclosed assets are reported exclusive of expected reimbursement cash flows from the FDIC. Foreclosed covered loan collateral is transferred into covered foreclosed assets at the loan’s carrying value, inclusive of the acquisition date fair value discount.

Covered foreclosed assets are initially recorded at estimated fair value less estimated costs to sell on the acquisition date based on similar market comparable valuations less estimated selling costs. Any subsequent valuation adjustments due to declines in fair value will be charged to noninterest expense, and will be mostly offset by noninterest income representing the corresponding increase to the FDIC indemnification asset for the offsetting loss reimbursement amount. Any recoveries of previous valuation adjustments will be credited to noninterest expense with a corresponding charge to noninterest income for the portion of the recovery that is due to the FDIC.

Premises and Equipment

Land is carried at cost. Land improvements, buildings and equipment, including those acquired under capital lease, are stated at cost less accumulated depreciation and amortization. Depreciation and amortization expenses are computed using the straight-line method over the estimated useful lives of the related assets or lease terms. Asset lives range from 3-10 years for furniture and equipment and 15-40 years for land improvements and buildings.

Goodwill and Other Intangible Assets

Goodwill represents the excess of costs over fair value of net assets of businesses acquired. Goodwill and other intangible assets acquired in a purchase business combination and determined to have an indefinite useful life are not amortized, but instead tested for impairment at least annually. Intangible assets with estimable useful lives are amortized over their respective estimated useful lives to their estimated residual values, and reviewed for impairment.

The Company has an identifiable intangible asset consisting of core deposit intangibles (CDI). CDI are amortized over their respective estimated useful lives, and reviewed for impairment.

Impairment of Long-Lived Assets and Goodwill

Long-lived assets, such as premises and equipment, and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized by the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of would be separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and are no longer depreciated. The assets and liabilities of a disposed group classified as held for sale would be presented separately in the appropriate asset and liability sections of the consolidated balance sheet.

As of December 31 of each year, goodwill is tested for impairment, and is tested for impairment more frequently if events and circumstances indicate that the asset might be impaired. An impairment loss is recognized to the extent that the carrying amount exceeds the asset’s fair value. This determination is made at the reporting unit level. The Company may choose to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, the Company determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then goodwill is deemed not to be impaired. However, if the Company concludes otherwise, or if the Company elected not to first assess qualitative factors, then the Company performs the first step of a two-step impairment test by calculating the fair value of the reporting unit and comparing the fair value with the carrying amount of the reporting unit. Second, if the carrying amount of the reporting unit exceeds its fair value, an impairment loss is recognized for any excess of the carrying amount of the reporting unit’s goodwill over the implied fair value of that goodwill. The implied fair value of goodwill is determined by allocating the fair value of the reporting unit in a manner similar to a purchase price allocation. The residual fair value after this allocation is the implied fair value of the reporting unit goodwill. Currently, and historically, the Company is comprised of only one reporting unit that operates within the business segment it has identified as “community banking”. Goodwill was not impaired as of December 31, 2014 because the fair value of the reporting unit exceeded its carrying value.

Mortgage Servicing Rights

Mortgage servicing rights (MSR) represent the Company’s right to a future stream of cash flows based upon the contractual servicing fee associated with servicing mortgage loans. Our MSR arise from residential and commercial mortgage loans that we originate and sell, but retain the right to service the loans. The net gain from the retention of the servicing right is included in gain on sale of loans in noninterest income when the loan is sold. Fair value is based on market prices for comparable mortgage servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, the custodial earnings rate, an inflation rate, ancillary income, prepayment speeds and default rates and losses. Servicing fees are recorded in noninterest income when earned.

The Company accounts for MSR at fair value. The determination of fair value of our MSR requires management judgment because they are not actively traded. The determination of fair value for MSR requires valuation processes which combine the use of discounted cash flow models and extensive analysis of current market data to arrive at an estimate of fair value. The cash flow and prepayment assumptions used in our discounted cash flow model are based on empirical data drawn from the historical performance of our MSR, which we believe are consistent with assumptions used by market participants valuing similar MSR, and from data obtained on the performance of similar MSR. The key assumptions used in the valuation of MSR include mortgage prepayment speeds and the discount rate. These variables can, and generally will, change from quarter to quarter as market conditions and projected interest rates change. The key risks inherent with MSR are prepayment speed and changes in interest rates. The Company uses an independent third party to determine fair value of MSR.

Indemnification Asset/Liability

The Company accounts for amounts receivable or payable under its loss-share agreements entered into with the FDIC in connection with its purchase and assumption of certain assets and liabilities of Granite as indemnification assets in accordance with FASB ASC Topic 805, Business Combinations. FDIC indemnification assets are initially recorded at fair value, based on the discounted value of expected future cash flows under the loss-share agreements. The difference between the fair value and the undiscounted cash flows the Company expects to collect from or pay to the FDIC will be accreted into noninterest income over the life of the FDIC indemnification asset. FDIC indemnification assets are reviewed quarterly and adjusted for any changes in expected cash flows based on recent performance and expectations for future performance of the covered portfolios. These adjustments are measured on the same basis as the related covered loans and covered other real estate owned. Any increases in cash flow of the covered assets over those expected will reduce the FDIC indemnification asset and any decreases in cash flow of the covered assets under those expected will increase the FDIC indemnification asset. Increases and decreases to the FDIC indemnification asset are recorded as adjustments to noninterest income.

Reserve for Unfunded Commitments

The reserve for unfunded commitments is established through a provision for losses – unfunded commitments charged to noninterest expense. The reserve for unfunded commitments is an amount that Management believes will be adequate to absorb probable losses inherent in existing commitments, including unused portions of revolving lines of credits and other loans, standby letters of credits, and unused deposit account overdraft privilege. The reserve for unfunded commitments is based on evaluations of the collectability, and prior loss experience of unfunded commitments. The evaluations take into consideration such factors as changes in the nature and size of the loan portfolio, overall loan portfolio quality, loan concentrations, specific problem loans and related unfunded commitments, and current economic conditions that may affect the borrower’s or depositor’s ability to pay.

During the three months ended June 30, 2013, the Company modified the methodology employed to estimate potential losses on unfunded commitments. Similar to the Allowance for Loan Losses, the Company performs a migration analysis of historical loss experience. Prior to this quarter, the loss experience of each quarter over the previous three years was reviewed in order to calculate an annualized loss rate by loan category. Going forward, the Company has chosen to review all loss experience available since the conversion to a loss migration analysis. This change is intended to more accurately reflect the risk inherent in the unfunded commitments and appropriately consider all losses incurred in prior years. This change in methodology resulted in the reserve for unfunded commitments as of June 30, 2013 being $335,000 more than it would have been without this change in methodology.

Income Taxes

The Company’s accounting for income taxes is based on an asset and liability approach. The Company recognizes the amount of taxes payable or refundable for the current year, and deferred tax assets and liabilities for the future tax consequences that have been recognized in its financial statements or tax returns. The measurement of tax assets and liabilities is based on the provisions of enacted tax laws. A valuation allowance, if needed, reduces deferred tax assets to the expected amount most likely to be realized. Realization of deferred tax assets is dependent upon the generation of a sufficient level of future taxable income and recoverable taxes paid in prior years. Although realization is not assured, management believes it is more likely than not that all of the deferred tax assets will be realized. Interest and/or penalties related to income taxes are reported as a component of noninterest income.

Off-Balance Sheet Credit Related Financial Instruments

In the ordinary course of business, the Company has entered into commitments to extend credit, including commitments under credit card arrangements, commercial letters of credit, and standby letters of credit. Such financial instruments are recorded when they are funded.

Geographical Descriptions

For the purpose of describing the geographical location of the Company’s loans, the Company has defined northern California as that area of California north of, and including, Stockton; central California as that area of the state south of Stockton, to and including, Bakersfield; and southern California as that area of the state south of Bakersfield.

Reclassifications

Certain amounts reported in previous consolidated financial statements have been reclassified to conform to the presentation in this report. These reclassifications did not affect previously reported net income or total shareholders’ equity.

Recent Accounting Pronouncements

FASB issued ASU No. 2014-04, Receivables (Topic 310): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure. ASU 2014-04 clarifies when an in substance repossession or foreclosure occurs, that is, when a creditor should be considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan such that the loan receivable should be derecognized and the real estate property recognized. ASU 2014-04 is effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. ASU 2014-04 is not expected to have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU No. 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity. ASU 2014-08 improves the definition of discontinued operations by limiting discontinued operations reporting to disposals of components of an entity that represent strategic shifts that have (or will have) a major effect on an entity’s operations and financial results. ASU 2014-08 requires expanded disclosures for discontinued operations that provide users of financial statements with more information about the assets, liabilities, revenues, and expenses of discontinued operations. ASU 2014-08 also requires an entity to disclose the pretax profit or loss of an individually significant component of an entity that does not qualify for discontinued operations reporting, and provide users with information about the financial effects of significant disposals that do not qualify for discontinued operations reporting. The amendments in ASU 2014-08 include several changes to the Accounting Standards Codification to improve the organization and readability of Subtopic 205-20 and Subtopic 360-10, Property, Plant, and Equipment—Overall. ASU 2014-08 is effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. ASU 2014-08 is not expected to have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). The core principle of the guidance under ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 is effective for a public entity for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. The Company is currently evaluating the effects of ASU 2014-09 on its financial statements and disclosures, if any.

FASB issued ASU No. 2014-11, Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures. ASU 2014-11 requires that repurchase-to-maturity transactions be accounted for as secured borrowings consistent with the accounting for other repurchase agreements. In addition, ASU 2014-11 requires separate accounting for repurchase financings, which entails the transfer of a financial asset executed contemporaneously with a repurchase agreement with the same counterparty. ASU 2014-11 requires entities to disclose certain information about transfers accounted for as sales in transactions that are economically similar to repurchase agreements. In addition, ASU 2014-11 requires disclosures related to collateral, remaining contractual tenor and of the potential risks associated with repurchase agreements, securities lending transactions and repurchase-to-maturity transactions. ASU 2014-11 is effective for public business entities for the first interim or annual period beginning after December 15, 2014. An entity is required to present changes in accounting for transactions outstanding on the effective date as a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. Earlier application for a public business entity is prohibited. ASU 2014-11 is not expected to have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU No. 2014-12, Compensation—Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be achieved after the Requisite Service Period. ASU 2014-12 requires that a performance target that affects the vesting of a share-based payment award and that could be achieved after the requisite service period be treated as a performance condition. A reporting entity should apply existing guidance in Topic 718 as it relates to awards with performance conditions that affect vesting to account for such awards. As such, the performance target should not be reflected in estimating the grant-date fair value of the award. Compensation cost should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. If the performance target becomes probable of being achieved before the end of the requisite service period, the remaining unrecognized compensation cost should be recognized prospectively over the remaining requisite service period. The total amount of compensation cost recognized during and after the requisite service period should reflect the number of awards that are expected to vest and should be adjusted to reflect those awards that ultimately vest. The requisite service period ends when the employee can cease rendering service and still be eligible to vest in the award if the performance target is achieved. The stated vesting period (which includes the period in which the performance target could be achieved) may differ from the requisite service period. Current U.S. GAAP does not contain explicit guidance on whether to treat a performance target that could be achieved after the requisite service period as a performance condition that affects vesting or as a nonvesting condition that affects the grant-date fair value of an award. ASU 2014-12 provides explicit guidance for those awards. For all entities, ASU 2014-12 is effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. Earlier adoption is permitted.

FASB issued ASU No. 2014-14, Receivables—Troubled Debt Restructurings by Creditors (Topic 310): Classification of Certain Government Mortgage Loans upon Foreclosure. ASU 2014-14 requires that a mortgage loan be derecognized and that a separate other receivable be recognized upon foreclosure if the following conditions are met: 1) the loan has a government guarantee that is not separable from the loan before foreclosure, 2) at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under that claim, and 3) at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed. Upon foreclosure, the separate other receivable should be measured based on the amount of the loan balance (principal and interest) expected to be recovered from the guarantor. For public business entities, ASU 2014-14 is effective for annual periods and interim periods within those annual periods beginning after December 15, 2014. Earlier adoption is permitted.

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Fair Value Measurement - Recorded Amount of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 5,091	$ 21,282
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	5,091	21,282
Fair value measurements on recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	90,583	110,812
Fair value measurements on recurring basis [Member] | Obligations of U.S. government corporations and agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	75,120	97,143
Fair value measurements on recurring basis [Member] | Obligations of states and political subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	3,175	5,589
Fair value measurements on recurring basis [Member] | Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	1,908	1,915
Fair value measurements on recurring basis [Member] | Marketable equity securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	3,002
Fair value measurements on recurring basis [Member] | Mortgage servicing rights [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	7,378	6,165
Fair value measurements on recurring basis [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	3,002
Fair value measurements on recurring basis [Member] | Level 1 [Member] | Marketable equity securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	3,002
Fair value measurements on recurring basis [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	80,203	104,647
Fair value measurements on recurring basis [Member] | Level 2 [Member] | Obligations of U.S. government corporations and agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	75,120	97,143
Fair value measurements on recurring basis [Member] | Level 2 [Member] | Obligations of states and political subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	3,175	5,589
Fair value measurements on recurring basis [Member] | Level 2 [Member] | Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	1,908	1,915
Fair value measurements on recurring basis [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	7,378	6,165
Fair value measurements on recurring basis [Member] | Level 3 [Member] | Mortgage servicing rights [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 7,378	$ 6,165

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Stock Options and Other Equity-Based Incentive Instruments - Information about Options (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Information about Options
Intrinsic value of options exercised	$ 1,209,000	$ 1,777,000	$ 138,000
Fair value of options that vested	965,000	1,150,000	1,083,000
Total compensation costs for options recognized in income	965,000	1,150,000	1,083,000
Total tax benefit recognized in income related to compensation costs for options	$ 378,000	$ 484,000	$ 455,000
Weighted average fair value of grants (per option)	$ 8.17	$ 8.91	$ 6.63

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Retirement Plans (Tables)

12 Months Ended

Dec. 31, 2014

Compensation and Retirement Disclosure [Abstract]

Defined Benefit Pension Plans

Amounts recognized as a component of accumulated other comprehensive loss as of year-end that have not been recognized as a component of the combined net period benefit cost of the Company’s defined benefit pension plans are presented in the following table. The Company expects to recognize approximately $823,000 of the net actuarial loss reported in the following table as of December 31, 2014 as a component of net periodic benefit cost during 2015.

	December 31,
(in thousands)	2014			2013
Transition obligation	$	9		$	11
Prior service cost		(173	)		(35	)
Net actuarial loss		8,049			811
Amount included in accumulated other comprehensive loss	$	7,885			787
Deferred tax benefit		(3,315	)		(331	)
Amount included in accumulated other comprehensive loss, net of tax	$	4,570		$	456

Information Pertaining to Activity in Supplemental Retirement Plans

Information pertaining to the activity in the supplemental retirement plans, using a measurement date of December 31, is as follows:

	December 31,
	2014			2013
	(in thousands)
Change in benefit obligation:
Benefit obligation at beginning of year	$	(14,634	)	$	(16,345	)
Acquisition		(4,150	)		—
Service cost		(652	)		(742	)
Interest cost		(739	)		(643	)
Actuarial (loss)/gain		(7,254	)		2,573
Benefits paid		631			523
Benefit obligation at end of year	$	(26,798	)	$	(14,634	)
Change in plan assets:
Fair value of plan assets at beginning of year	$	—		$	—
Fair value of plan assets at end of year	$	—		$	—
Funded status	$	(26,798	)	$	(14,634	)
Unrecognized net obligation existing at January 1, 1986		9			11
Unrecognized net actuarial loss		8,049			811
Unrecognized prior service cost		(173	)		(35	)
Accumulated other comprehensive income		(7,885	)		(787	)
Accrued benefit cost	$	(26,798	)	$	(14,634	)
Accumulated benefit obligation	$	(24,739	)	$	(12,954	)

Net Periodic Benefit Cost Recognized for Supplemental Retirement Plans

The following table sets forth the net periodic benefit cost recognized for the supplemental retirement plans:

	Years Ended December 31,
	2014		2013		2012
	(in thousands)
Net pension cost included the following components:
Service cost-benefits earned during the period	$	652	$	743	$	680
Interest cost on projected benefit obligation		739		643		687
Amortization of net obligation at transition		2		2		2
Amortization of prior service cost		138		153		153
Recognized net actuarial loss		16		291		288
Net periodic pension cost	$	1,547	$	1,832	$	1,810

Assumptions Used in Accounting for Plans

The following table sets forth assumptions used in accounting for the plans:

	Years Ended December 31,
	2014			2013			2012
Discount rate used to calculate benefit obligation		3.65	%		4.85	%		4.00	%
Discount rate used to calculate net periodic pension cost		3.65	%		4.85	%		4.00	%
Average annual increase in executive compensation		2.50	%		2.50	%		2.50	%
Average annual increase in director compensation		2.50	%		2.50	%		2.50	%

Expected Benefit Payments to Participants and Estimated Contributions to be Made by Company

The following table sets forth the expected benefit payments to participants and estimated contributions to be made by the Company under the supplemental retirement plans for the years indicated:

Years Ended	Expected Benefit Payments to Participants		Estimated Company Contributions
	(in thousands)
2015	$	1,145	$	1,145
2016		1,036		1,036
2017		1,001		1,001
2018		1,330		1,330
2019		519		519
2020-2024	$	3,719	$	3,719

XML

Earnings Per Share - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Options and restricted stock units excluded from diluted earnings per share because the effect of these options and restricted stock units was antidilutive	95,600	407,985	967,120

XML

Retirement Plans - Expected Benefit Payments to Participants and Estimated Contributions to be Made by Company (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Expected Benefit Payments to Participants, 2015	$ 1,145
Expected Benefit Payments to Participants, 2016	1,036
Expected Benefit Payments to Participants, 2017	1,001
Expected Benefit Payments to Participants, 2018	1,330
Expected Benefit Payments to Participants, 2019	519
Expected Benefit Payments to Participants, 2020-2024	3,719
Estimated Company Contributions, 2015	1,145
Estimated Company Contributions, 2016	1,036
Estimated Company Contributions, 2017	1,001
Estimated Company Contributions, 2018	1,330
Estimated Company Contributions, 2019	519
Estimated Company Contributions, 2020-2024	$ 3,719

XML

Allowance for Loan Losses (Tables)

12 Months Ended

Dec. 31, 2014

Receivables [Abstract]

Summary of Activity in Allowance for Loan Losses, and Ending Balance of Loans, Net of Unearned Fees for Periods Indicated

The following tables summarize the activity in the allowance for loan losses, and ending balance of loans, net of unearned fees for the periods indicated.

	Allowance for Loan Losses - Year Ended December 31, 2014
	RE Mortgage						Home Equity						Auto Indirect			Other Consum.						Construction
(in thousands)	Resid.			Comm.			Lines			Loans									C&I			Resid.			Comm.			Total
Beginning balance	$	3,154		$	9,700		$	16,375		$	1,208		$	66		$	589		$	4,331		$	1,559		$	1,263		$	38,245
Charge-offs		(171	)		(110	)		(1,094	)		(29	)		(3	)		(599	)		(479	)		(4	)		(69	)		(2,558	)
Recoveries		2			540			960			34			86			495			1,268			1,377			181			4,943
(Benefit) provision		101			(903	)		(565	)		584			(140	)		234			(894	)		(1,498	)		(964	)		(4,045	)
Ending balance	$	3,086		$	9,227		$	15,676		$	1,797		$	9		$	719		$	4,226		$	1,434		$	411		$	36,585
Ending balance:
Individ. evaluated for impairment	$	974		$	410		$	1,974		$	284			—		$	142		$	423		$	60			—		$	4,267
Loans pooled for evaluation	$	1,915		$	8,408		$	13,251		$	1,513		$	9		$	572		$	2,569		$	332		$	322		$	28,891
Loans acquired with deteriorated credit quality	$	197		$	409		$	451			—			—		$	5		$	1,234		$	1,042		$	89		$	3,427
	Loans, net of unearned fees - As of December 31, 2014
	RE Mortgage						Home Equity						Auto Indirect			Other Consum.						Construction
(in thousands)	Resid.			Comm.			Lines			Loans									C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	279,420		$	1,335,939		$	352,584		$	31,314		$	112		$	33,074		$	174,945		$	38,618		$	35,518		$	2,282,524
Individ. evaluated for impairment	$	7,188		$	41,932		$	6,968		$	1,278		$	18		$	323		$	1,757		$	2,683		$	99		$	62,246
Loans pooled for evaluation	$	268,227		$	1,263,090		$	336,595		$	29,266		$	94		$	32,677		$	165,753		$	35,260		$	36,419		$	2,167,381
Loans acquired with deteriorated credit quality	$	4,005		$	30,917		$	9,021		$	770			—		$	74		$	7,435		$	675			—		$	52,897
	Allowance for Loan Losses - Year Ended December 31, 2013
	RE Mortgage						Home Equity						Auto Indirect			Other Consum.						Construction
(in thousands)	Resid.			Comm.			Lines			Loans									C&I			Resid.			Comm.			Total
Beginning balance	$	3,523		$	8,782		$	21,367		$	1,155		$	243		$	696		$	4,703		$	1,400		$	779		$	42,648
Charge-offs		(46	)		(2,038	)		(2,651	)		(94	)		(68	)		(887	)		(1,599	)		(20	)		(140	)		(7,543	)
Recoveries		345			994			1,053			41			195			759			340			63			65			3,855
(Benefit) provision		(668	)		1,962			(3,394	)		106			(304	)		21			887			116			559			(715	)
Ending balance	$	3,154		$	9,700		$	16,375		$	1,208		$	66		$	589		$	4,331		$	1,559		$	1,263		$	38,245
Ending balance:
Individ. evaluated for impairment	$	775		$	1,198		$	1,140		$	169		$	1		$	8		$	585		$	91		$	8		$	3,975
Loans pooled for evaluation	$	2,039		$	7,815		$	14,749		$	1,039		$	65		$	581		$	2,402		$	751		$	789		$	30,230
Loans acquired with deteriorated credit quality	$	340		$	687		$	486			—			—			—		$	1,344		$	717		$	466		$	4,040
	Loans, net of unearned fees - As of December 31, 2013
	RE Mortgage						Home Equity						Auto Indirect			Other Consum.						Construction
(in thousands)	Resid.			Comm.			Lines			Loans									C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	195,013		$	912,850		$	339,866		$	14,588		$	946		$	27,763		$	131,878		$	31,933		$	17,170		$	1,672,007
Individ. evaluated for impairment	$	7,342		$	59,936		$	6,918		$	778		$	60		$	90		$	3,177		$	2,756		$	178		$	81,235
Loans pooled for evaluation	$	183,015		$	822,654		$	322,865		$	13,324		$	886		$	27,592		$	122,166		$	27,611		$	16,947		$	1,537,060
Loans acquired with deteriorated credit quality	$	4,656		$	30,260		$	10,083		$	486			—		$	81		$	6,535		$	1,566		$	45		$	53,712

	Allowance for Loan Losses - Year Ended December 31, 2012
	RE Mortgage						Home Equity						Auto Indirect			Other Consum.						Construction
(in thousands)	Resid.			Comm.			Lines			Loans									C&I			Resid.			Comm.			Total
Beginning balance	$	2,404		$	13,217		$	18,258		$	1,101		$	215		$	932		$	6,545		$	1,817		$	1,425		$	45,914
Charge-offs		(1,558	)		(3,457	)		(8,042	)		(385	)		(83	)		(1,202	)		(1,251	)		(406	)		(100	)		(16,484	)
Recoveries		147			1,020			398			100			215			860			643			412			—			3,795
Provision (benefit)		2,530			(1,998	)		10,753			339			(104	)		106			(1,234	)		(423	)		(546	)		9,423
Ending balance	$	3,523		$	8,782		$	21,367		$	1,155		$	243		$	696		$	4,703		$	1,400		$	779		$	42,648
Ending balance:
Individ. evaluated for impairment	$	631		$	515		$	2,264		$	81		$	5		$	47		$	840		$	11		$	111		$	4,505
Loans pooled for evaluation	$	2,526		$	8,026		$	17,862		$	995		$	238		$	649		$	2,342		$	430		$	165		$	33,233
Loans acquired with deteriorated credit quality	$	366		$	241		$	1,241		$	79			—			—		$	1,521		$	959		$	503		$	4,910
	Loans, net of unearned fees – As of December 31, 2012
	RE Mortgage						Home Equity						Auto Indirect			Other Consum.						Construction
(in thousands)	Resid.			Comm.			Lines			Loans									C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	131,684		$	878,446		$	342,025		$	13,557		$	3,816		$	26,713		$	135,528		$	18,459		$	14,595		$	1,564,823
Individ. evaluated for impairment	$	6,586		$	71,077		$	10,056		$	528		$	197		$	121		$	8,562		$	3,596		$	607		$	101,330
Loans pooled for evaluation	$	120,082		$	776,137		$	318,403		$	12,825		$	3,619		$	26,560		$	117,429		$	8,281		$	10,589		$	1,393,925
Loans acquired with deteriorated credit quality	$	5,016		$	31,232		$	13,566		$	204			—		$	32		$	9,537		$	6,582		$	3,399		$	69,568

Presentation of Credit Quality Indicators

The following tables present ending loan balances by loan category and risk grade for the periods indicated:

	Credit Quality Indicators – As of December 31, 2014
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines		Loans						C&I		Resid.		Comm.		Total
Originated loans:
Pass	$	146,949	$	883,102	$	292,244	$	20,976	$	66	$	27,396	$	124,707	$	18,112	$	24,436	$	1,537,988
Special mention		1,122		11,521		3,590		743		11		591		636		622		—		18,836
Substandard		6,523		34,174		9,332		1,840		35		243		1,268		2,401		109		55,925
Loss		—		—		—		—		—		—		—		—		—		—
Total originated	$	154,594	$	928,797	$	305,166	$	23,559	$	112	$	28,230	$	126,611	$	21,135	$	24,545	$	1,612,749
PNCI loans:
Pass	$	119,643	$	359,537	$	36,531	$	6,813		—	$	4,399	$	40,628	$	16,808	$	11,973	$	596,332
Special mention		547		12,979		936		147		—		230		268		—		—		15,107
Substandard		631		3,709		930		25		—		141		3		—		—		5,439
Loss		—		—		—		—		—		—		—		—		—		—
Total PNCI	$	120,821	$	376,225	$	38,397	$	6,985		—	$	4,770	$	40,899	$	16,808	$	11,973	$	616,878
PCI loans	$	4,005	$	30,917	$	9,021	$	770		—	$	74	$	7,435	$	675		—	$	52,897
Total loans	$	279,420	$	1,335,939	$	352,584	$	31,314	$	112	$	33,074	$	174,945	$	38,618	$	36,518	$	2,282,524
			Credit Quality Indicators – As of December 31, 2013
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines		Loans						C&I		Resid.		Comm.		Total
Originated loans:
Pass	$	121,969	$	768,596	$	203,232	$	12,284	$	717	$	24,653	$	121,580	$	25,836	$	16,571	$	1,394,438
Special mention		1,265		15,862		4,529		504		118		756		938		96		343		24,411
Substandard		6,648		40,454		9,446		1,061		111		196		2,122		4,435		211		64,684
Loss		—		—		—		—		—		3		10		—		—		13
Total originated	$	129,882	$	824,912	$	316,207	$	13,849	$	946	$	25,608	$	124,650	$	30,367	$	17,125	$	1,483,546
PNCI loans:
Pass	$	59,798	$	48,548	$	12,716	$	253		—	$	2,020	$	380		—		—	$	123,715
Special mention		—		5,810		195		—		—		18		313		—		—		6,336
Substandard		677		3,320		665		—		—		36		—		—		—		4,698
Loss		—		—		—		—		—		—		—		—		—		—
Total PNCI	$	60,475	$	57,678	$	13,576	$	253		—	$	2,074	$	693		—		—	$	134,749
PCI loans	$	4,656	$	30,260	$	10,083	$	486		—	$	81	$	6,535	$	1,566	$	45	$	53,712
Total loans	$	195,013	$	912,850	$	339,866	$	14,588	$	946	$	27,763	$	131,878	$	31,933	$	17,170	$	1,672,007

Analysis of Past Due and Nonaccrual Loans

The following table shows the ending balance of current, past due, and nonaccrual originated loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual Originated Loans – As of December 31, 2014
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines		Loans						C&I		Resid.		Comm.		Total
Originated loan balance:
Past due:
30-59 Days	$	1,296	$	735	$	2,066	$	615	$	4	$	64	$	739		—		—	$	5,519
60-89 Days		919		—		296		192		—		24		99		—		—		1,530
> 90 Days		100		900		754		202		17		46		61		—		—		2,080
Total past due	$	2,315	$	1,635	$	3,116	$	1,009	$	21	$	134	$	899		—		—	$	9,129
Current		152,279		927,162		302,050		22,550		91		28,096		125,712		21,135		24,545		1,603,620
Total orig. loans	$	154,594	$	928,797	$	305,166	$	23,559	$	112	$	28,230	$	126,611	$	21,135	$	24,545	$	1,612,749
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	3,430	$	20,736	$	4,336	$	1,197	$	18	$	66	$	246	$	2,401	$	99	$	32,529

The following table shows the ending balance of current, past due, and nonaccrual PNCI loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual PNCI Loans – As of December 31, 2014
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.		C&I		Construction
(in thousands)	Resid.		Comm.		Lines		Loans								Resid.		Comm.		Total
PNCI loan balance:
Past due:
30-59 Days	$	2,041	$	260	$	275		—		—	$	25	$	67		—		—	$	2,668
60-89 Days		24		—		118		—		—		3		—		—		—		145
> 90 Days		239		—		73		25		—		76		—		—		—		413
Total past due	$	2,304	$	260	$	466	$	25		—	$	104	$	67		—		—	$	3,226
Current		118,517		375,965		37,931		6,960		—		4,666		40,832		16,808		11,973	$	613,652
Total PNCI loans	$	120,821	$	376,225	$	38,397	$	6,985		—	$	4,770	$	40,899	$	16,808	$	11,973	$	616,878
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	799	$	366	$	346	$	25		—	$	110		—		—		—	$	1,646

The following table shows the ending balance of current, past due, and nonaccrual originated loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual Originated Loans – As of December 31, 2013
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.		C&I		Construction
(in thousands)	Resid.		Comm.		Lines		Loans								Resid.		Comm.		Total
Originated loan balance:
Past due:
30-59 Days	$	2,272	$	2,304	$	3,121	$	264	$	24	$	40	$	296		—		—	$	8,321
60-89 Days		284		—		1,070		16		1		16		76		—	$	198		1,661
> 90 Days		447		2,213		1,050		312		33		7		749		13		—		4,824
Total past due	$	3,003	$	4,517	$	5,241	$	592	$	58	$	63	$	1,121	$	13	$	198	$	14,806
Current		126,879		820,395		310,966		13,257		888		25,545		123,529		30,354		16,927		1,468,740
Total orig. loans	$	129,882	$	824,912	$	316,207	$	13,849	$	946		25,608	$	124,650	$	30,367	$	17,125	$	1,483,546
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	4,697	$	30,732	$	4,972	$	719	$	54	$	26	$	1,280	$	2,473	$	178	$	45,131

The following table shows the ending balance of current, past due, and nonaccrual PNCI loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual PNCI Loans – As of December 31, 2013
	RE Mortgage				Home Equity				Auto Indirect		Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans				Consum.		C&I		Resid.		Comm.		Total
PNCI loan balance:
Past due:
30-59 Days	$	799	$	512	$	313		—		—	$	49		—		—		—	$	1,673
60-89 Days		—		352		38		—		—		—		—		—		—		390
> 90 Days		—		217		—		—		—		—		—		—		—		217
Total past due	$	799	$	1,081	$	351		—		—	$	49		—		—		—	$	2,280
Current		59,676		56,597		13,225	$	253		—		2,025	$	693		—		—		132,469
Total PNCI loans	$	60,475	$	57,678	$	13,576	$	253		—	$	2,074	$	693		—		—	$	134,749
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	262	$	1,139	$	429		—		—	$	36		—		—		—	$	1,866

Impaired Loans

Impaired originated loans are those where management has concluded that it is probable that the borrower will be unable to pay all amounts due under the contractual terms. The following tables show the recorded investment (financial statement balance), unpaid principal balance, average recorded investment, and interest income recognized for impaired Originated and PNCI loans, segregated by those with no related allowance recorded and those with an allowance recorded for the periods indicated.

	Impaired Originated Loans – As of December 31, 2014
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines		Loans						C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	3,287	$	38,477	$	3,001	$	750	$	14	$	25	$	412	$	2,401	$	99	$	48,466
Unpaid principal	$	5,138	$	41,949	$	6,094	$	1,187	$	49	$	32	$	433	$	6,588	$	190	$	61,660
Average recorded Investment	$	3,826	$	45,915	$	3,355	$	651	$	35	$	21	$	1,030	$	2,437	$	84	$	57,354
Interest income Recognized	$	38	$	995	$	26	$	6		—	$	1	$	26		—	$	3	$	1,095
With an allowance recorded:
Recorded investment	$	2,724	$	2,943	$	3,185	$	504	$	4	$	41	$	1,338	$	282		—	$	11,021
Unpaid principal	$	2,865	$	3,101	$	3,533	$	597	$	6	$	41	$	1,438	$	282		—	$	11,863
Related allowance	$	797	$	302	$	1,769	$	284		—	$	11	$	423	$	60		—	$	3,646
Average recorded Investment	$	2,677	$	4,119	$	2,982	$	365	$	4	$	25	$	1,428	$	283	$	55	$	11,938
Interest income Recognized	$	91	$	144	$	71	$	13		—		—	$	71	$	19		—	$	409

	Impaired PNCI Loans – As of December 31, 2014
	RE Mortgage				Home Equity					Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines			Loans						C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	343	$	366	$	346		$	25		—	$	37	$	7		—		—	$	1,124
Unpaid principal	$	353	$	2,620	$	374		$	25		—	$	54	$	7		—		—	$	3,433
Average recorded Investment	$	246	$	753	$	287		$	12		—	$	36	$	10		—		—	$	1,344
Interest income Recognized	$	14		—	$	(1	)		—		—		—	$	1		—		—	$	14
With an allowance recorded:
Recorded investment	$	834	$	146	$	436			—		—	$	220		—		—		—	$	1,636
Unpaid principal	$	852	$	146	$	436			—		—	$	220		—		—		—	$	1,654
Related allowance	$	177	$	108	$	205			—		—	$	131		—		—		—	$	621
Average recorded Investment	$	516	$	148	$	319			—		—	$	124		—		—		—	$	1,107
Interest income Recognized	$	8	$	8	$	20			—		—	$	12		—		—		—	$	48
	Impaired Originated Loans – As of December 31, 2013
	RE Mortgage				Home Equity					Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines			Loans						C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	4,366	$	53,352	$	3,710		$	552	$	55	$	16	$	1,648	$	2,473	$	69	$	66,241
Unpaid principal	$	6,489	$	58,894	$	7,299		$	1,249	$	123	$	21	$	1,665	$	6,611	$	138	$	82,489
Average recorded Investment	$	4,123	$	58,205	$	4,410		$	463	$	93	$	18	$	2,154	$	1,567	$	83	$	71,116
Interest income Recognized	$	336	$	3,361	$	352		$	36	$	12	$	1	$	113	$	108	$	7	$	4,326
With an allowance recorded:
Recorded investment	$	2,630	$	5,296	$	2,779		$	226	$	4	$	10	$	1,517	$	284	$	109	$	12,855
Unpaid principal	$	2,689	$	5,659	$	3,053		$	291	$	6	$	10	$	1,616	$	284	$	288	$	13,896
Related allowance Average recorded	$	648	$	1,084	$	968		$	169	$	1	$	5	$	585	$	91	$	7	$	3,558
Investment	$	2,245	$	6,077	$	3,064		$	141	$	12	$	7	$	1,817	$	1,499	$	188	$	15,050
Interest income Recognized	$	124	$	287	$	146		$	18	$	1	$	2	$	95	$	19	$	15	$	707
	Impaired PNCI Loans – As of December 31, 2013
	RE Mortgage				Home Equity					Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines			Loans						C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	148	$	1,139	$	227			—		—	$	36	$	12		—		—	$	1,562
Unpaid principal	$	158	$	3,323	$	287			—		—	$	45	$	12		—		—	$	3,825
Average recorded Investment	$	37	$	1,005	$	333			—		—	$	39	$	7		—		—	$	1,421
Interest income Recognized	$	11	$	233	$	21			—		—	$	5	$	1		—		—	$	271
With an allowance recorded:
Recorded investment	$	198	$	149	$	203			—		—	$	28		—		—		—	$	578
Unpaid principal	$	207	$	149	$	215			—		—	$	28		—		—		—	$	599
Related allowance	$	128	$	114	$	172			—		—	$	3		—		—		—	$	417
Average recorded Investment	$	275	$	250	$	162			—		—	$	29		—		—		—	$	716
Interest income Recognized	$	12	$	9	$	10			—		—	$	1		—		—		—	$	32

	Impaired Originated Loans – As of December 31, 2012
	RE Mortgage				Home Equity				Auto Indirect		Other		C&I		Construction
(in thousands)	Resid.		Comm.		Lines		Loans				Consum.				Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	3,520	$	66,031	$	4,241	$	361	$	163	$	19	$	4,238	$	3,554	$	284	$	82,411
Unpaid principal	$	5,349	$	70,709	$	6,691	$	781	$	311	$	40	$	4,613	$	8,227	$	484	$	97,205
Average recorded Investment	$	6,329	$	61,299	$	4,311	$	329	$	263	$	42	$	7,500	$	3,505	$	517	$	84,095
Interest income Recognized	$	71	$	2,513	$	58	$	1	$	3		—	$	73	$	20	$	10	$	2,749
With an allowance recorded:
Recorded investment	$	2,867	$	3,258	$	5,412	$	167	$	34	$	30	$	4,324	$	42	$	323	$	16,457
Unpaid principal	$	3,432	$	3,556	$	7,103	$	396	$	51	$	32	$	4,992	$	42	$	523	$	20,127
Related allowance	$	603	$	352	$	2,237	$	81	$	5	$	12	$	840	$	11	$	111	$	4,252
Average recorded Investment	$	3,890	$	7,841	$	6,331	$	317	$	102	$	49	$	2,800	$	1,543	$	6,570	$	29,443
Interest income Recognized	$	67	$	129	$	103	$	16	$	1	$	1	$	100	$	6	$	5	$	428
	Impaired PNCI Loans – As of December 31, 2012
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines		Loans						C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment		—	$	1,468	$	365		—		—		—		—		—		—	$	1,833
Unpaid principal		—	$	3,452	$	586		—		—		—		—		—		—	$	4,038
Average recorded Investment	$	16	$	2,097	$	308	$	11		—	$	31	$	11		—		—	$	2,474
Interest income Recognized		—	$	133	$	5		—		—		—		—		—		—	$	138
With an allowance recorded:
Recorded investment	$	199	$	320	$	38		—		—	$	72		—		—		—	$	629
Unpaid principal	$	225	$	331	$	41		—		—	$	76		—		—		—	$	673
Related allowance	$	28	$	163	$	27		—		—	$	35		—		—		—	$	253
Average recorded Investment	$	213	$	121	$	148		—		—	$	43		—		—		—	$	525
Interest income Recognized	$	9	$	12	$	1		—		—	$	2		—		—		—	$	24

Troubled Debt Restructurings

The following tables show certain information regarding Troubled Debt Restructurings (TDRs) that occurred during the periods indicated:

	TDR Information for the Year Ended December 31, 2014
	RE Mortgage				Home Equity					Auto Indirect		Other Consum.		C&I			Construction
(dollars in thousands)	Resid.		Comm.		Lines		Loans										Resid.		Comm.		Total
Number		5		7		6		2			—		1		7			1		2		31
Pre-mod outstanding principal balance	$	1,048	$	1,980	$	940	$	100			—	$	147	$	218		$	102	$	219	$	4,754
Post-mod outstanding principal balance	$	1,050	$	1,890	$	967	$	102			—	$	147	$	219		$	85	$	196	$	4,656
Financial impact due to TDR taken as additional provision	$	91	$	22		—	$	(1	)		—	$	66	$	101			—		—	$	279
Number that defaulted during the period		2		2		1		—			—		—		1			—		—		6
Recorded investment of TDRs that defaulted during the period	$	344	$	423	$	20		—			—		—	$	116			—		—	$	903
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions		—		—		—		—			—		—	$	(8	)		—		—	$	(8	)

	TDR Information for the Year Ended December 31, 2013
	RE Mortgage					Home Equity					Auto Indirect		Other Consum.		C&I		Construction
(dollars in thousands)	Resid.			Comm.		Lines		Loans									Resid.		Comm.		Total
Number		9			11		12		2			—		—		8		—		—		42
Pre-mod outstanding principal balance	$	2,173		$	13,145	$	1,546	$	251			—		—	$	274		—		—	$	17,389
Post-mod outstanding principal balance	$	2,177		$	13,146	$	1,557	$	253			—		—	$	275		—		—	$	17,408
Financial impact due to TDR taken as additional provision	$	148		$	27	$	340	$	(1	)		—		—	$	88		—		—	$	602
Number that defaulted during the period		4			8		3		1			—		—		4		1		—		21
Recorded investment of TDRs that defaulted during the period	$	443		$	1,702	$	150	$	15			—		—	$	1,363	$	73		—	$	3,746
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions	$	(3	)	$	7		—		—			—		—	$	3	$	5		—	$	12

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Noninterest Income and Expense

12 Months Ended

Dec. 31, 2014

Other Income and Expenses [Abstract]

Noninterest Income and Expense

Note 21 - Noninterest Income and Expense

The components of other noninterest income were as follows (in thousands):	Years Ended December 31,
	2014			2013			2012
Service charges on deposit accounts	$	11,811		$	12,716		$	14,290
ATM and interchange fees		9,651			8,370			7,762
Other service fees		2,206			2,144			2,223
Mortgage banking service fees		1,869			1,774			1,666
Change in value of mortgage servicing rights		(1,301	)		253			(2,016	)
Total service charges and fees		24,236			25,257			23,925
Gain on sale of loans		2,032			5,602			6,810
Commissions on sale of non-deposit investment products		2,995			2,983			3,209
Increase in cash value of life insurance		1,953			1,727			1,820
Change in indemnification asset		(856	)		(1,649	)		(286	)
Gain on sale of foreclosed assets		2,153			1,640			786
Sale of customer checks		450			377			346
Lease brokerage income		504			337			276
Gain (loss) on disposal of fixed assets		49			(39	)		(420	)
Commission rebates		—			—			(56	)
Gain on life insurance death benefit		—			—			675
Other		1,000			594			895
Total other noninterest income		10,280			11,572			14,055
Total noninterest income	$	34,516		$	36,829		$	37,980

Mortgage loan servicing fees, net of change in fair value of mortgage loan servicing rights, totaling $568,000, $2,027,000, and ($350,000) were recorded in service charges and fees noninterest income for the years ended December 31, 2014, 2013, and 2012, respectively.

The components of noninterest expense were as follows (in thousands):

	Years Ended December 31,
	2014			2013			2012
Base salaries, net of deferred loan origination costs	$	39,342		$	34,404		$	33,093
Incentive compensation		5,068			4,694			5,138
Benefits and other compensation costs		13,134			12,838			11,721
Total salaries and benefits expense		57,544			51,936			49,952
Occupancy		8,203			7,405			7,263
Equipment		4,514			4,162			4,444
Data processing and software		6,512			4,844			4,793
Assessments		2,107			2,248			2,393
ATM network charges		2,996			2,480			2,390
Advertising		2,413			1,981			2,876
Professional fees		3,888			2,707			2,879
Telecommunications		2,870			2,449			2,250
Postage		949			786			920
Courier service		1,055			988			1,013
Foreclosed assets expense		528			514			1,474
Intangible amortization		446			209			209
Operational losses		764			618			787
Provision for foreclosed asset losses		208			682			1,728
Change in reserve for unfunded commitments		(395	)		(1,200	)		875
Legal settlement		—			339			2,090
Merger expense		4,858			312			—
Other		10,919			10,144			9,662
Total other noninterest expense		52,835			41,668			48,046
Total noninterest expense	$	110,379		$	93,604		$	97,998
Merger expense:
Incentive compensation	$	1,174			—			—
Benefits and other compensation costs		94			—			—
Data processing and software		475			—			—
Professional fees		2,390		$	312			—
Other		725			—			—
Total merger expense	$	4,858		$	312			—

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Stock Options and Other Equity-Based Incentive Instruments

12 Months Ended

Dec. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock Options and Other Equity-Based Incentive Instruments

Note 20 - Stock Options and Other Equity-Based Incentive Instruments

In March 2009, the Company’s Board of Directors adopted the TriCo Bancshares 2009 Equity Incentive Plan (2009 Plan) covering officers, employees, directors of, and consultants to, the Company. The 2009 Plan was approved by the Company’s shareholders in May 2009. The 2009 Plan allows for the granting of the following types of “stock awards” (Awards): incentive stock options, nonstatutory stock options, performance awards, restricted stock, restricted stock unit (RSU) awards and stock appreciation rights. RSUs that vest based solely on the grantee remaining in the service of the Company for a certain amount of time, are referred to as “service condition vesting RSUs”. RSUs that vest based on the grantee remaining in the service of the Company for a certain amount of time and a market condition such as the total return of the Company’s common stock versus the total return of an index of bank stocks, are referred to as “market plus service condition vesting RSUs”. In May 2013, the Company’s shareholders approved an amendment to the 2009 Plan increasing the maximum aggregate number of shares of TriCo’s common stock which may be issued pursuant to or subject to Awards from 650,000 to 1,650,000. The number of shares available for issuance under the 2009 Plan is reduced by: (i) one share for each share of common stock issued pursuant to a stock option or a Stock Appreciation Right and (ii) two shares for each share of common stock issued pursuant to a Performance Award, a Restricted Stock Award or a Restricted Stock Unit Award. When Awards made under the 2009 Plan expire or are forfeited or cancelled, the underlying shares will become available for future Awards under the 2009 Plan. To the extent that a share of common stock pursuant to an Award that counted as two shares against the number of shares again becomes available for issuance under the 2009 Plan, the number of shares of common stock available for issuance under the 2009 Plan shall increase by two shares. Shares awarded and delivered under the 2009 Plan may be authorized but unissued, or reacquired shares. As of December 31, 2014, 706,000 options for the purchase of common shares, and 46,286 restricted stock units were outstanding, and 822,428 shares remain available for issuance, under the 2009 Plan.

In May 2001, the Company adopted the TriCo Bancshares 2001 Stock Option Plan (2001 Plan) covering officers, employees, directors of, and consultants to, the Company. Under the 2001 Plan, the option exercise price cannot be less than the fair market value of the Common Stock at the date of grant except in the case of substitute options. Options for the 2001 Plan expire on the tenth anniversary of the grant date. Vesting schedules under the 2001 Plan are determined individually for each grant. As of December 31, 2014, 396,850 options for the purchase of common shares were outstanding under the 2001 Plan. As of May 2009, as a result of the shareholder approval of the 2009 Plan, no new options may be granted under the 2001 Plan.

Stock option activity is summarized in the following table for the dates indicated:

	Number of Shares			Option Price per Share					Weighted Average Exercise Price
Outstanding at December 31, 2013		1,246,370		$	12.63	to	$	25.91	$	18.04
Options granted		22,500		$	23.21	to	$	23.21	$	23.21
Options exercised		(166,020	)	$	14.54	to	$	20.58	$	17.32
Options forfeited		—			—	to		—		-
Outstanding at September 30, 2014		1,102,850		$	12.63	to	$	25.91	$	18.25

The following table shows the number, weighted-average exercise price, intrinsic value, and weighted average remaining contractual life of options exercisable, options not yet exercisable and total options outstanding as of December 31, 2014:

	Currently Exercisable		Currently Not Exercisable		Total Outstanding
Number of options		818,350		284,500		1,102,850
Weighted average exercise price	$	18.62	$	17.19	$	18.25
Intrinsic value (in thousands)	$	5,007	$	2,136	$	7,143
Weighted average remaining contractual term (yrs.)		4.5		7.6		5.3

The 284,500 options that are currently not exercisable as of December 31, 2014 are expected to vest, on a weighted-average basis, over the next 2.6 years, and the Company is expected to recognize $1,783,000 of pre-tax compensation costs related to these options as they vest. The Company did not modify any option grants during 2013 or 2014.

The following table shows the total intrinsic value of options exercised, the total fair value of options vested, total compensation costs for options recognized in income, and total tax benefit recognized in income related to compensation costs for options during the periods indicated:

	Years Ended December 31,
	2014		2013		2012
Intrinsic value of options exercised	$	1,209,000	$	1,777,000	$	138,000
Fair value of options that vested	$	965,000	$	1,150,000	$	1,083,000
Total compensation costs for options recognized in income	$	965,000	$	1,150,000	$	1,083,000
Total tax benefit recognized in income related to compensation costs for options	$	378,000	$	484,000	$	455,000
Weighted average fair value of grants (per option)	$	8.17	$	8.91	$	6.63

The fair value of the Company’s stock option grants is estimated on the measurement date, which, for the Company, is the date of grant. The fair value of stock options is estimated using the Black-Scholes option-pricing model. The Company estimated expected market price volatility and expected term of the options based on historical data and other factors. The weighted-average assumptions used to determine the fair value of options granted are detailed in the table below:

	Years Ended December 31,
	2014			2013			2012
Assumptions used to value option grants:
Average expected terms (years)		6.3			7.0			8.8
Volatility		42.1	%		56.2	%		51.5	%
Annual rate of dividends		1.90	%		1.87	%		2.36	%
Discount rate		1.69	%		1.26	%		1.49	%

Restricted stock unit (RSU) activity is summarized in the following table for the dates indicated:

	Service Condition Vesting RSUs				Market Plus Service Condition Vesting RSUs
	Number of RSUs		Weighted Average Fair Value on Date of Grant		Number of RSUs		Weighted Average Fair Value on Date of Grant
Outstanding at December 31, 2013		—		—		—		—
RSUs granted		30,642	$	22.54		15,366	$	21.39
RSUs added through dividend credits		278				—
RSUs released		—				—
RSUs forfeited/expired		—				—
Outstanding at December 31, 2014		30,920				15,366

The 30,642 of service condition vesting RSUs granted during 2014 include a feature whereby each RSU outstanding is credited with a dividend amount equal to any common stock cash dividend declared and paid, and the credited amount is divided by the closing price of the Company’s stock on the dividend payable date to arrive at an additional amount of RSUs outstanding under the original grant. The 30,920 of service condition vesting RSUs that are currently outstanding as of December 31, 2014 are expected to vest, and be released, on a weighted-average basis, over the next 2.8 years. The Company is expected to recognize $566,000 of pre-tax compensation costs related to these service condition vesting RSUs between December 31, 2014 and their vesting dates. During the three months ended December 31, 2014, the Company modified 13,749 service condition vesting RSUs that were granted on August 11, 2014 such that their vesting schedule was changed from 100% vesting on August 11, 2018 to 25% vesting on each of August 11, 2015, 2016, 2017 and 2018.

The 15,366 of market plus service condition vesting RSUs that are currently outstanding as of December 31, 2014 are expected to vest, and be released, on a weighted-average basis, over the next 2.6 years. The Company is expected to recognize $286,000 of pre-tax compensation costs related to these RSUs between December 31, 2014 and their vesting dates. As of December 31, 2014, the number of market plus service condition vesting RSUs outstanding that will actually vest, and be released, may be reduced to zero or increased to 23,049 depending on the total return of the Company’s common stock versus the total return of an index of bank stocks from the grant date to the vesting date. The Company did not modify any market plus service condition vesting RSUs during 2014.

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Deposits - Additional Information (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Deposits [Line Items]
Overdrawn deposit balances classified as consumer loans	$ 1,216,000	$ 1,212,000
California [Member]
Schedule Of Deposits [Line Items]
Certificate of deposits, included in time certificates $100,000 and over	$ 5,000,000	$ 5,000,000

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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Future Minimum Commitments under Non-Cancelable Operating Leases with Initial or Remaining Terms of One Year or More

At December 31, 2014, future minimum commitments under non-cancelable operating leases with initial or remaining terms of one year or more are as follows:

	Operating Leases
	(in thousands)
2015	$	3,419
2016		2,510
2017		1,856
2018		1,323
2019		859
Thereafter		1,180
Future minimum lease payments	$	11,147

Summary of Bank's Commitments and Contingent Liabilities

The following table presents a summary of the Bank’s commitments and contingent liabilities:

(in thousands)	December 31, 2014		December 31, 2013
Financial instruments whose amounts represent risk:
Commitments to extend credit:
Commercial loans	$	177,557	$	136,986
Consumer loans		392,705		360,194
Real estate mortgage loans		36,139		35,309
Real estate construction loans		49,774		22,897
Standby letters of credit		17,531		2,601
Deposit account overdraft privilege		101,060		68,932

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Foreclosed Assets (Tables)

12 Months Ended

Dec. 31, 2014

Text Block [Abstract]

Summary of Activity in Balance of Foreclosed Assets

A summary of the activity in the balance of foreclosed assets follows (dollars in thousands):

	Year ended December 31, 2014									Year ended December 31, 2013
	Noncovered			Covered			Total			Noncovered			Covered			Total
Beginning balance, net	$	5,588		$	674		$	6,262		$	5,957		$	1,541		$	7,498
Acquisitions		695			—			695			—			—			—
Additions/transfers from loans		5,753			—			5,753			11,224			493			11,717
Dispositions/sales		(7,391	)		(217	)		(7,608	)		(10,992	)		(1,279	)		(12,271	)
Valuation adjustments		(196	)		(12	)		(208	)		(601	)		(81	)		(682	)
Ending balance, net	$	4,449		$	445		$	4,894		$	5,588		$	674		$	6,262
Ending valuation allowance	$	(208	)		—		$	(208	)	$	(414	)		—		$	(414	)
Ending number of foreclosed assets		28			1			29			28			4			32
Proceeds from sale of foreclosed assets	$	9,517		$	245		$	9,762		$	12,483		$	1,427		$	13,910
Gain on sale of foreclosed assets	$	2,125		$	28		$	2,153		$	1,492		$	148		$	1,640

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Income Taxes

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Income Taxes

Note 22 - Income Taxes

The components of consolidated income tax expense are as follows:

	2014			2013		2012
	(in thousands)
Current tax expense
Federal	$	14,485		$	11,618	$	9,895
State		5,016			4,261		3,425
		19,501			15,879		13,320
Deferred tax expense (benefit)
Federal		(794	)		1,976		(235	)
State		(199	)		550		(148	)
		(993	)		2,526		(383	)
Total tax expense	$	18,508		$	18,405	$	12,937

A deferred tax asset or liability is recognized for the tax consequences of temporary differences in the recognition of revenue and expense for financial and tax reporting purposes. The net change during the year in the deferred tax asset or liability results in a deferred tax expense or benefit.

Taxes recorded directly to shareholders’ equity are not included in the preceding table. These taxes (benefits) relating to changes in unfunded status of the supplemental retirement plans amounting to $(2,984,000) in 2014, $1,269,000 in 2013, and $(2,000) in 2012, taxes (benefits) related to unrealized gains and losses on available-for-sale investment securities amounting to $(68,000) in 2014, $(1,780,000) in 2013, and $(880,000) in 2012, taxes (benefits) related to employee stock options of $97,000 in 2014, $138,000 in 2013, and $13,000 in 2012, and taxes (benefits) related to changes in joint beneficiary agreement liability of $0 in 2014, $0 in 2013, and $64,000 in 2012, were recorded directly to shareholders’ equity.

The temporary differences, tax effected, which give rise to the Company’s net deferred tax asset recorded in other assets are as follows as of December 31 for the years indicated:

	2014			2013
	(in thousands)
Deferred tax assets:
Allowance for losses	$	16,284		$	17,096
Deferred compensation		3,115			3,093
Accrued pension liability		7,925			5,817
Accrued bonus		1,149			1,037
Other accrued expenses		124			—
Unfunded status of the supplemental retirement plans		3,315			331
State taxes		1,713			1,390
Stock option expense		2,534			2,225
Nonaccrual interest		2,714			1,840
OREO write downs		198			331
Acquisition cost basis		6,017			699
Tax credits		490			—
Net operating loss carryforwards		7,128			—
Other		625			—
Total deferred tax assets		53,331			33,859
Deferred tax liabilities:
Securities income		(1,362	)		(986	)
Unrealized gain on securities		(1,699	)		(1,767	)
Depreciation		(3,072	)		(392	)
Merger related fixed asset valuations		(54	)		(379	)
Securities accretion		(287	)		(256	)
Mortgage servicing rights valuation		(2,977	)		(2,416	)
Indemnification asset		147			(87	)
Core deposit intangible		(2,802	)		(193	)
Junior subordinated debt		(2,782	)		—
Prepaid expenses and other		(737	)		(602	)
Total deferred tax liability		(15,625	)		(7,078	)
Net deferred tax asset	$	37,706		$	26,781

As part of the merger with North Valley, TriCo acquired federal and state net operating loss carryforwards, capital loss carryforwards, and tax credit carryforwards. These tax attribute carryforwards will be subject to provisions of the tax law that limit the use of such losses and credits generated by a company prior to the date certain ownership changes occur. The amount of the Company’s net operating loss carryforwards that would be subject to these limitations as of December 31, 2014 are $13.7 million and $35.2 million for federal and California, respectively. The amount of the Company’s capital loss carryforwards that would be subject to these limitations as of December 31, 2014 are $131,000 and $404,000 for federal and California, respectively. The amount of the Company’s tax credits that would be subject to these limitations as of December 31, 2014 are $69,000 and $2.7 million for federal and California, respectively. Due to the limitation, a significant portion of the state tax credits will expire regardless of whether the Company generates future taxable income. As such, the Company has recorded the future benefit of these tax credits at the value which is more likely than not to be realized. These tax loss and tax credit carryforwards expire at various dates beginning in 2015.

The Company believes that a valuation allowance is not needed to reduce the deferred tax assets as it is more likely than not that the results of future operations will generate sufficient taxable income to realize the deferred tax assets, including the tax attribute carryforwards acquired as part of the North Valley merger.

As part of the North Valley merger, TriCo inherited an unrecognized tax benefit for tax positions claimed on prior year tax returns filed by North Valley. The Company had an unrecognized tax benefit of $245,000 as of December 31, 2014, the recognition of which would reduce the Company’s tax expense by $158,000. Management does not expect the unrecognized tax benefit will materially change in the next 12 months. A summary of changes in the Company’s unrecognized tax benefit (including interest and penalties) in 2014 is as follows:

(in thousands)	UTB		Interest/Penalties		Total
As of December 31, 2013		—		—		—
Additions for tax positions for prior years		227		18		245
As of December 31, 2014		227		18		245

During the years ended December 31, 2014 and December 31, 2013, the Company recognized no interest and penalties related to taxes. During the year ended December 31, 2012, the Company recognized interest and penalties related to taxes of $22,000 and $5,000, respectively. The Company files income tax returns in the U.S. federal jurisdiction, and California. With few exceptions, the Company is no longer subject to U.S. federal and state/local income tax examinations by tax authorities for years before 2011 and 2010, respectively.

The provisions for income taxes applicable to income before taxes for the years ended December 31, 2014, 2013 and 2012 differ from amounts computed by applying the statutory Federal income tax rates to income before taxes. The effective tax rate and the statutory federal income tax rate are reconciled as follows:

	Years Ended December 31,
	2014			2013			2012
Federal statutory income tax rate		35.0	%		35.0	%		35.0	%
State income taxes, net of federal tax benefit		7.0			6.8			6.7
Tax-exempt interest on municipal obligations		(0.4	)		(0.4	)		(0.5	)
Tax-exempt life insurance related income		(1.5	)		(1.3	)		(2.0	)
Non-deductible joint beneficiary agreement expense		0.2			0.2			0.3
Non-deductible merger expense		1.0			—			—
Other		0.2			(0.1	)		1.0
Effective Tax Rate		41.5	%		40.2	%		40.5	%

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Earnings Per Share

12 Months Ended

Dec. 31, 2014

Earnings Per Share [Abstract]

Earnings Per Share

Note 23 - Earnings Per Share

Basic earnings per share represents income available to common shareholders divided by the weighted-average number of common shares outstanding during the period. Diluted earnings per share reflects additional common shares that would have been outstanding if dilutive potential common shares had been issued, as well as any adjustments to income that would result from assumed issuance. Potential common shares that may be issued by the Company relate solely from outstanding stock options, and are determined using the treasury stock method. Earnings per share have been computed based on the following:

	Years ended December 31,
	2014		2013		2012
Net income (in thousands)	$	26,108	$	27,399	$	18,994
(number of shares in thousands)
Average number of common shares outstanding		17,716		16,045		15,988
Effect of dilutive stock options		207		152		64
Average number of common shares outstanding used to calculate diluted earnings per share		17,923		16,197		16,052

Based on an average of quarterly computations, there were 95,600, 407,985 and 967,120 options and restricted stock units excluded from the computation of annual diluted earnings per share for the years ended December 31, 2014, 2013 and 2012, respectively, because the effect of these options and restricted stock units were antidilutive.

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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating activities:
Net income	$ 26,108	$ 27,399	$ 18,994
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of premises and equipment, and amortization	5,735	4,623	4,292
Amortization of intangible assets	446	209	209
(Benefit from) provision for loan losses	(4,045)	(715)	9,423
Amortization of investment securities premium, net	970	752	1,151
Originations of loans for resale	(49,241)	(123,834)	(225,602)
Proceeds from sale of loans originated for resale	49,394	137,859	238,352
Gain on sale of loans	(2,032)	(5,602)	(6,810)
Change in market value of mortgage servicing rights	1,301	(253)	2,016
Provision for losses on foreclosed assets	208	682	1,728
Gain on sale of foreclosed assets	(2,153)	(1,640)	(786)
Loss on disposal of fixed assets	(49)	39	420
Increase in cash value of life insurance	(1,953)	(1,727)	(1,820)
Gain on life insurance death benefit			(675)
Equity compensation vesting expense	1,133	1,151	1,083
Stock option excess tax benefits	(225)	(356)	(44)
Deferred income tax expense (benefit)	(993)	2,526	(383)
Change in:
Reserve for unfunded commitments	(395)	(1,200)	875
Interest receivable	(619)	120	676
Interest payable	(67)	(98)	(638)
Other assets and liabilities, net	3,894	1,151	9,602
Net cash from operating activities	27,417	41,086	52,063
Investing activities:
Proceeds from maturities of securities available for sale	24,016	53,468	76,764
Proceeds from sale of securities available for sale	14,130
Purchases of securities available for sale			(13,815)
Proceeds from maturities of securities held to maturity	34,172	4,391
Purchases of securities held to maturity	(280,692)	(244,967)
(Purchase) redemption of restricted equity securities, net	(2,415)	484	963
Loan origination and principal collections, net	(82,079)	(59,411)	(44,601)
Loans purchased	(32,017)	(62,698)
Proceeds from sale of premises and equipment	121	12	30
Improvement of foreclosed assets	(462)	(479)	(983)
Proceeds from sale of other real estate owned	9,762	13,910	17,257
Purchases of premises and equipment	(4,665)	(8,313)	(10,792)
Life insurance proceeds		706	4,423
Cash received from acquisition, net	141,405
Net cash (used) provided by investing activities	(178,724)	(302,897)	29,246
Financing activities:
Net increase (decrease) in deposits	167,984	120,781	99,166
Net change in other borrowings	2,941	(2,862)	(63,344)
Stock option excess tax benefits	225	356	44
Repurchase of common stock	(292)	(501)
Dividends paid	(7,807)	(6,745)	(5,757)
Exercise of stock options	616	251	206
Net cash from financing activities	163,667	111,280	30,315
Net change in cash and cash equivalents	12,360	(150,531)	111,624
Cash and cash equivalents and beginning of year	598,368	748,899	637,275
Cash and cash equivalents at end of year	610,728	598,368	748,899
Supplemental disclosure of noncash activities:
Unrealized (loss) gain on securities available for sale	(162)	(4,232)	(2,096)
Loans transferred to foreclosed assets	5,291	11,717	8,382
Loans transferred to held-for-sale			9,739
Market value of shares tendered in-lieu of cash to pay for exercise of options and/or related taxes	2,259	2,989	224
Supplemental disclosure of cash flow activity:
Cash paid for interest expense	4,641	4,794	7,982
Cash paid for income taxes	22,685	17,395	10,995
Assets acquired in acquisition	978,682
Liabilities assumed in acquisition	$ 827,372

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Comprehensive Income

12 Months Ended

Dec. 31, 2014

Equity [Abstract]

Comprehensive Income

Note 24 – Comprehensive Income

Accounting principles generally require that recognized revenue, expenses, gains and losses be included in net income. Although certain changes in assets and liabilities, such as unrealized gains and losses on available-for-sale securities, are reported as a separate component of the equity section of the balance sheet, such items, along with net income, are components of comprehensive income. The components of other comprehensive income and related tax effects are as follows:

	Years Ended December 31,
	2014			2013			2012
	(in thousands)
Unrealized holding (losses) gains on available for sale securities before reclassifications	$	(162	)	$	(4,232	)	$	(2,096	)
Amounts reclassified out of accumulated other comprehensive income		—			—			—
Unrealized holding (losses) gains on available for sale securities after reclassifications		(162	)		(4,232	)		(2,096	)
Tax effect		68			1,780			880
Unrealized holding (losses) gains on available for sale securities, net of tax		(94	)		(2,452	)		(1,216	)
Change in unfunded status of the supplemental retirement plans before reclassifications		(7,253	)		2,575			(445	)
Amounts reclassified out of accumulated other comprehensive income:
Amortization of prior service cost		138			153			153
Amortization of actuarial losses		17			291			288
Total amounts reclassified out of accumulated other comprehensive income		155			444			441
Change in unfunded status of the supplemental retirement plans after reclassifications		(7,098	)		3,019			(4	)
Tax effect		2,984			(1,269	)		2
Change in unfunded status of the supplemental retirement plans, net of tax		(4,114	)		1,750			(2	)
Change in joint beneficiary agreement liability before reclassifications		148			400			(370	)
Amounts reclassified out of accumulated other comprehensive income		—			—			—
Change in joint beneficiary agreement liability after reclassifications		148			400			(370	)
Tax effect		—			—			(64	)
Change in joint beneficiary agreement liability, net of tax		148			400			(434	)
Total other comprehensive (loss) income	$	(4,060	)	$	(302	)	$	(1,652	)

The components of accumulated other comprehensive income, included in shareholders’ equity, are as follows:

	December 31,
	2014			2013
	(in thousands)
Net unrealized gains on available for sale securities	$	4,040		$	4,202
Tax effect		(1,699	)		(1,767	)
Unrealized holding gains on available for sale securities, net of tax		2,341			2,435
Unfunded status of the supplemental retirement plans		(7,885	)		(787	)
Tax effect		3,315			331
Unfunded status of the supplemental retirement plans, net of tax		(4,570	)		(456	)
Joint beneficiary agreement liability		26			(122	)
Tax effect		—			—
Joint beneficiary agreement liability, net of tax		26			(122	)
Accumulated other comprehensive income	$	(2,203	)	$	1,857

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Allowance for Loan Losses - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014 Category	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of categories occupied under commercial real estate loans	2
Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Impaired TDRs Loans	45,676,000	$ 56,739,000	$ 57,223,000
Additional funds in TDRs	54,000	25,000	137,000
PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Impaired TDRs Loans	1,307,000	901,000	950,000
Obligations to lend additional funds on TDRs	0	$ 0	$ 0
Minimum [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Period of collateral payment of loan	3 months
Maximum [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Period of collateral payment of loan	12 months

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Stock Options and Other Equity-Based Incentive Instruments - Stock Option Activity (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Number of Shares, beginning balance	1,246,370
Options granted, Number of Shares	22,500
Options exercised, Number of Shares	(166,020)
Options forfeited, Number of Shares	0
Options outstanding, Number of Shares, ending balance	1,102,850
Options outstanding, Weighted Average Exercise Price, beginning balance	$ 18.04
Options granted, Weighted Average Exercise Price	$ 23.21
Options exercised, Weighted Average Exercise Price	$ 17.32
Options forfeited, Weighted Average Exercise Price	$ 0
Options outstanding, Weighted Average Exercise Price, ending balance	$ 18.25
Minimum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Option Price per Share, beginning balance	$ 12.63
Options granted, Option Price per Share	$ 23.21
Options exercised, Option Price per Share	$ 14.54
Options forfeited, Option Price per Share	$ 0
Options outstanding, Option Price per Share, ending balance	$ 12.63
Maximum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Option Price per Share, beginning balance	$ 25.91
Options granted, Option Price per Share	$ 23.21
Options exercised, Option Price per Share	$ 20.58
Options forfeited, Option Price per Share	$ 0
Options outstanding, Option Price per Share, ending balance	$ 25.91

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Business Combinations (Tables)

12 Months Ended

Dec. 31, 2014

Summary of Principal Balance Loans Acquired

The following table presents a reconciliation of the undiscounted contractual cash flows, nonaccretable difference, accretable yield, fair value, purchase discount, and principal balance of loans for the PNCI and PCI—other categories of North Valley Bancorp loans as of the acquisition date. For North Valley Bancorp PCI – other loans, the purchase discount does not necessarily represent cash flows to be collected:

	North Valley Bancorp Loans – October 3, 2014
(in thousands)	PNCI			PCI—other			Total
Undiscounted contractual cash flows	$	718,731		$	15,706		$	734,437
Undiscounted cash flows not expected to be collected (nonaccretable difference)		—			(6,295	)		(6,295	)
Undiscounted cash flows expected to be collected		718,731			9,411			728,142
Accretable yield at acquisition		(228,815	)		—			(228,815	)
Estimated fair value of loans acquired at acquisition		489,916			9,411			499,327
Purchase discount		12,721			2,077			14,798
Principal balance loans acquired	$	502,637		$	11,488		$	514,125

Schedule of Pro Forma Financial Information

The unaudited pro forma financial information is not necessarily indicative of the results of operations that would have occurred had the transaction been effected on the assumed date.

	Proforma for the
	Year Ended December 31,
	2014			2013
(Unaudited, in thousands, except per share data)
Summarized Income Statement Data:
Net interest income	$	139,520		$	132,635
Provision for (benefit from) loan losses		(4,045	)		(715	)
Noninterest income		43,587			50,966
Noninterest expense		147,295			133,073
Income before income taxes		39,857			51,243
Income taxes		16,453			20,091
Net income	$	23,404		$	31,152
Basic earnings per share	$	1.03		$	1.38
Diluted earnings per share	$	1.02		$	1.37

North Valley Bancorp [Member]

Schedule of Fair Value of Consideration Transferred, Identifiable Net Assets Acquired and Resulting Goodwill

The following table discloses the calculation of the fair value of consideration transferred, the total identifiable net assets acquired and the resulting goodwill relating to the North Valley Bancorp acquisition:

(in thousands)	North Valley Bancorp October 3, 2014
Fair value of consideration transferred:
Fair value of shares issued	$	151,303
Cash consideration		7
Total fair value of consideration transferred		151,310
Asset acquired:
Cash and cash equivalents		141,412
Securities available for sale		17,297
Securities held to maturity		189,949
Restricted equity securities		5,378
Loans		499,327
Foreclosed assets		695
Premises and equipment		11,936
Cash value of life insurance		38,075
Core deposit intangible		6,614
Other assets		20,056
Total assets acquired		930,739
Liabilities assumed:
Deposits		801,956
Other liabilities		10,429
Junior subordinated debt		14,987
Total liabilities assumed		827,372
Total net assets acquired		103,367
Goodwill recognized	$	47,943

Summary of Estimated Fair Value Adjustments Resulting In Goodwill

A summary of the estimated fair value adjustments resulting in the goodwill recorded in the North Valley Bancorp acquisition are presented below:

(in thousands)	North Valley Bancorp October 3, 2014
Value of stock consideration paid to North Valley Bancorp Shareholders		151,303
Cash payments to North
Valley Bancorp Shareholders		7
Cost basis net assets acquired	$	(98,040	)
Fair value adjustments:
Loans		5,832
Premises and Equipment		(4,785	)
Core deposit intangible		(6,283	)
Deferred income taxes		6,293
Junior subordinated debt		(6,664	)
Other		280
Goodwill	$	47,943

Schedule of Cost Basis, Fair Value Discount and loan Acquired

The following table presents the cost basis, fair value discount, and fair value of loans acquired from North Valley Bancorp on October 3, 2014:

	North Valley Bancorp Acquired Loans October 3, 2014
(in thousands)	Cost Basis		Discount			Fair Value
PNCI	$	502,637	$	(12,721	)	$	489,916
PCI – other		11,488		(2,077	)		9,411
Total	$	514,125	$	(14,798	)	$	499,327

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Other Liabilities (Tables)

12 Months Ended

Dec. 31, 2014

Other Liabilities Disclosure [Abstract]

Components of Other Liabilities

Other liabilities were comprised of (in thousands):

	December 31,
	2014		2013
Deferred compensation	$	7,408	$	7,357
Pension liability		26,798		14,634
Joint beneficiary agreements		2,728		2,623
Miscellaneous other liabilities		12,258		7,097
Total other liabilities	$	49,192	$	31,711

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Business Combinations - Schedule of Cost Basis, Fair Value Discount and loan Acquired (Detail) (North Valley Bancorp [Member], USD $) In Thousands, unless otherwise specified	Oct. 03, 2014
Business Acquisition [Line Items]
Cost Basis	$ 514,125
Discount	(14,798)
Fair Value	499,327
PNCI [Member]
Business Acquisition [Line Items]
Cost Basis	502,637
Discount	(12,721)
Fair Value	489,916
PCI - Other [Member]
Business Acquisition [Line Items]
Cost Basis	11,488
Discount	(2,077)
Fair Value	$ 9,411

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Assets:
Cash and due from banks	$ 93,150	$ 76,915
Cash at Federal Reserve and other banks	517,578	521,453
Cash and cash equivalents	610,728	598,368
Investment securities:
Available for sale	83,205	104,647
Held to maturity	676,426	240,504
Restricted equity securities	16,956	9,163
Loans held for sale	3,579	2,270
Loans	2,282,524	1,672,007
Allowance for loan losses	(36,585)	(38,245)
Total loans, net	2,245,939	1,633,762
Foreclosed assets, net	4,894	6,262
Premises and equipment, net	43,493	31,612
Cash value of life insurance	92,337	52,309
Accrued interest receivable	9,275	6,516
Goodwill	63,462	15,519
Other intangible assets, net	7,051	883
Mortgage servicing rights	7,378	6,165
Other assets	51,735	36,086
Total assets	3,916,458	2,744,066
Deposits:
Noninterest-bearing demand	1,083,900	789,458
Interest-bearing	2,296,523	1,621,025
Total deposits	3,380,423	2,410,483
Accrued interest payable	978	938
Reserve for unfunded commitments	2,145	2,415
Other liabilities	49,192	31,711
Other borrowings	9,276	6,335
Junior subordinated debt	56,272	41,238
Total liabilities	3,498,286	2,493,120
Commitments and contingencies (Note 18)
Shareholders' equity:
Common stock, no par value: 50,000,000 shares authorized; issued and outstanding: 22,714,964 at December 31, 2014 16,076,662 at December 31, 2013	244,318	89,356
Retained earnings	176,057	159,733
Accumulated other comprehensive income, net of tax	(2,203)	1,857
Total shareholders' equity	418,172	250,946
Total liabilities and shareholders' equity	$ 3,916,458	$ 2,744,066

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Premises and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Summary of Premises and Equipment

Premises and equipment were comprised of:

	December 31, 2014			December 31, 2013
	(In thousands)
Land & land improvements	$	8,933		$	5,975
Buildings		39,638			30,103
Furniture and equipment		28,446			27,881
		77,017			63,959
Less: Accumulated depreciation		(33,570	)		(32,397	)
		43,447			31,562
Construction in progress		46			50
Total premises and equipment	$	43,493		$	31,612

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Mortgage Servicing Rights - Fair Value of Mortgage Servicing Rights (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Servicing Assets at Fair Value [Line Items]
Contractually specified servicing fees, late fees and ancillary fees earned	$ 1,869	$ 1,774	$ 1,666
Weighted-average prepayment speed (CPR)	12.00%	10.30%	20.30%
Weighted-average discount rate	10.00%	10.00%	10.00%
Loans [Member]
Servicing Assets at Fair Value [Line Items]
Balance at beginning of period				598,185
Balance at end of period	840,288	680,197	666,512	598,185
Mortgage servicing rights [Member]
Servicing Assets at Fair Value [Line Items]
Balance at beginning of period	6,165	4,552	4,603
Acquisition	1,944
Originations	570	1,360	1,965
Change in fair value	(1,301)	253	(2,016)
Balance at end of period	$ 7,378	$ 6,165	$ 4,552

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Retirement Plans - Assumptions Used in Accounting for Plans (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Discount rate used to calculate benefit obligation	3.65%	4.85%	4.00%
Discount rate used to calculate net periodic pension cost	3.65%	4.85%	4.00%
Executive compensation [Member]
Defined Benefit Plan Disclosure [Line Items]
Average annual increase in compensation	2.50%	2.50%	2.50%
Director compensation [Member]
Defined Benefit Plan Disclosure [Line Items]
Average annual increase in compensation	2.50%	2.50%	2.50%

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Stock Options and Other Equity-Based Incentive Instruments - Additional Information (Detail) (USD $)	12 Months Ended	3 Months Ended	0 Months Ended				9 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Aug. 11, 2018	Aug. 11, 2017	Aug. 11, 2016	Aug. 11, 2015	Sep. 30, 2014	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding options under the plan	1,102,850	1,102,850						1,246,370
Options currently not exercisable yet expected to vest	284,500	284,500
Weighted-average remaining contractual term	2 years 7 months 6 days
Pre-tax compensation costs expected to recognize	$ 1,783,000	$ 1,783,000
Restricted Stock Units (RSUs) [Member] | Service Condition Vesting RSUs [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of units outstanding expected to vest	30,920	30,920						0
Weighted-average remaining contractual term	2 years 9 months 18 days
Pre-tax compensation costs	566,000	566,000
Number of units granted	30,642	13,749
RSUs vesting grant date	Aug. 11, 2014
Number of units released	0
Restricted Stock Units (RSUs) [Member] | Service Condition Vesting RSUs [Member] | Forecast [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Percentage of vesting schedule			25.00%	25.00%	25.00%	25.00%
Restricted Stock Units (RSUs) [Member] | Market Plus Service Condition Vesting RSUs [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of units outstanding expected to vest	15,366	15,366						0
Weighted-average remaining contractual term	2 years 7 months 6 days
Pre-tax compensation costs	$ 286,000	$ 286,000
Number of units granted	15,366
Number of units released	0
Minimum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Maximum aggregate number of shares of TriCo's common stock issued	650,000	650,000
Minimum [Member] | Restricted Stock Units (RSUs) [Member] | Market Plus Service Condition Vesting RSUs [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of units released	0
Maximum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Maximum aggregate number of shares of TriCo's common stock issued	1,650,000	1,650,000
Maximum [Member] | Restricted Stock Units (RSUs) [Member] | Market Plus Service Condition Vesting RSUs [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of units released	23,049
2009 Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of shares to be reduced pursuant to stock option for computation of available number of shares for issuance	1	1
Number of shares to be reduced pursuant to restricted stock award for computation of available number of shares for issuance	2	2
Outstanding options under the plan	706,000	706,000
Options available for grant under the plan	822,428	822,428
2009 Plan [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of units outstanding expected to vest	46,286	46,286
2001 Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding options under the plan							396,850
Options available for grant under the plan							0
Share based compensation grant expiry period							10 years

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Consolidated Statements of Changes in Shareholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]
Beginning balance at Dec. 31, 2011	$ 216,441	$ 84,079	$ 128,551	$ 3,811
Beginning balance, shares at Dec. 31, 2011		15,978,958
Net income	18,994		18,994
Other comprehensive loss	(1,652)			(1,652)
Stock option vesting	1,083	1,083
Stock options exercised	430	430
Stock options exercised, shares		36,000
Tax benefit of stock options exercised	44	44
Repurchase of common stock	(224)	(75)	(149)
Repurchase of common stock, shares		(14,120)
Dividends paid	(5,757)		(5,757)
Ending balance at Dec. 31, 2012	229,359	85,561	141,639	2,159
Ending balance, shares at Dec. 31, 2012		16,000,838
Net income	27,399		27,399
Other comprehensive loss	(302)			(302)
Stock option vesting	1,151	1,151
Stock options forfeited	(22)	(22)
Stock options exercised	3,240	3,240
Stock options exercised, shares		248,765
Tax benefit of stock options exercised	356	356
Repurchase of common stock	(3,490)	(930)	(2,560)
Repurchase of common stock, shares		(172,941)
Dividends paid	(6,745)		(6,745)
Ending balance at Dec. 31, 2013	250,946	89,356	159,733	1,857
Ending balance, shares at Dec. 31, 2013	16,076,662	16,076,662
Net income	26,108		26,108
Other comprehensive loss	(4,060)			(4,060)
Stock option vesting	965	965
RSU vesting	126	126
PSU vesting	42	42
Stock options exercised	2,875	2,875
Stock options exercised, shares	166,020	166,020
Tax benefit of stock options exercised	225	225
Issuance of common stock, value	151,303	151,303
Issuance of common stock, shares		6,575,550
Repurchase of common stock	(2,551)	(574)	(1,977)
Repurchase of common stock, shares		(103,268)
Dividends paid	(7,807)		(7,807)
Ending balance at Dec. 31, 2014	$ 418,172	$ 244,318	$ 176,057	$ (2,203)
Ending balance, shares at Dec. 31, 2014	22,714,964	22,714,964

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Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)	Oct. 03, 2014	Sep. 23, 2011	May 28, 2010
North Valley Bancorp [Member]
Finite-Lived Intangible Assets [Line Items]
Additions to core deposit intangibles	$ 6,614,000
Citizens [Member]
Finite-Lived Intangible Assets [Line Items]
Additions to core deposit intangibles		898,000
Granite [Member]
Finite-Lived Intangible Assets [Line Items]
Additions to core deposit intangibles			$ 562,000

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Related Party Transactions - Additional Information (Detail) (Modern Building Inc. [Member], USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Modern Building Inc. [Member]
Related Party Transaction [Line Items]
Aggregate payments for construction services	$ 1,181,000	$ 4,261,000	$ 3,587,000

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Fair Value Measurement - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Transfers between any levels	$ 0	$ 0
Carrying value of loans fully charged-off	0
Securities held to maturity	676,426,000	240,504,000
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities held to maturity	$ 0	$ 0

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Components of Consolidated Income Tax Expense

The components of consolidated income tax expense are as follows:

	2014			2013		2012
	(in thousands)
Current tax expense
Federal	$	14,485		$	11,618	$	9,895
State		5,016			4,261		3,425
		19,501			15,879		13,320
Deferred tax expense (benefit)
Federal		(794	)		1,976		(235	)
State		(199	)		550		(148	)
		(993	)		2,526		(383	)
Total tax expense	$	18,508		$	18,405	$	12,937

Company's Net Deferred Tax Asset Recorded in Other Assets

The temporary differences, tax effected, which give rise to the Company’s net deferred tax asset recorded in other assets are as follows as of December 31 for the years indicated:

	2014			2013
	(in thousands)
Deferred tax assets:
Allowance for losses	$	16,284		$	17,096
Deferred compensation		3,115			3,093
Accrued pension liability		7,925			5,817
Accrued bonus		1,149			1,037
Other accrued expenses		124			—
Unfunded status of the supplemental retirement plans		3,315			331
State taxes		1,713			1,390
Stock option expense		2,534			2,225
Nonaccrual interest		2,714			1,840
OREO write downs		198			331
Acquisition cost basis		6,017			699
Tax credits		490			—
Net operating loss carryforwards		7,128			—
Other		625			—
Total deferred tax assets		53,331			33,859
Deferred tax liabilities:
Securities income		(1,362	)		(986	)
Unrealized gain on securities		(1,699	)		(1,767	)
Depreciation		(3,072	)		(392	)
Merger related fixed asset valuations		(54	)		(379	)
Securities accretion		(287	)		(256	)
Mortgage servicing rights valuation		(2,977	)		(2,416	)
Indemnification asset		147			(87	)
Core deposit intangible		(2,802	)		(193	)
Junior subordinated debt		(2,782	)		—
Prepaid expenses and other		(737	)		(602	)
Total deferred tax liability		(15,625	)		(7,078	)
Net deferred tax asset	$	37,706		$	26,781

Summary of Changes in Unrecognized Tax Benefit (Including Interest and Penalties)

A summary of changes in the Company’s unrecognized tax benefit (including interest and penalties) in 2014 is as follows:

(in thousands)	UTB		Interest/Penalties		Total
As of December 31, 2013		—		—		—
Additions for tax positions for prior years		227		18		245
As of December 31, 2014		227		18		245

Reconciliation of Effective Tax Rate and Statutory Federal Income Tax Rate

The effective tax rate and the statutory federal income tax rate are reconciled as follows:

	Years Ended December 31,
	2014			2013			2012
Federal statutory income tax rate		35.0	%		35.0	%		35.0	%
State income taxes, net of federal tax benefit		7.0			6.8			6.7
Tax-exempt interest on municipal obligations		(0.4	)		(0.4	)		(0.5	)
Tax-exempt life insurance related income		(1.5	)		(1.3	)		(2.0	)
Non-deductible joint beneficiary agreement expense		0.2			0.2			0.3
Non-deductible merger expense		1.0			—			—
Other		0.2			(0.1	)		1.0
Effective Tax Rate		41.5	%		40.2	%		40.5	%

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Deposits - Summary of Balances of Deposits (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deposits [Abstract]
Noninterest-bearing demand	$ 1,083,900	$ 789,458
Interest-bearing demand	782,385	533,351
Savings	1,156,126	798,986
Time certificates, $250,000 and over	38,217	31,542
Other time certificates	319,795	257,146
Total deposits	$ 3,380,423	$ 2,410,483

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Fair Value Measurement

12 Months Ended

Dec. 31, 2014

Fair Value Disclosures [Abstract]

Fair Value Measurement

Note 27 – Fair Value Measurement

The Company utilizes fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. In estimating fair value, the Company utilizes valuation techniques that are consistent with the market approach, income approach, and/or the cost approach. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability including assumptions about the risk inherent in a particular valuation technique, the effect of a restriction on the sale or use of an asset and the risk of nonperformance. Securities available-for-sale and mortgage servicing rights are recorded at fair value on a recurring basis. Additionally, from time to time, the Company may be required to record at fair value other assets on a nonrecurring basis, such as loans held for sale, loans held for investment and certain other assets. These nonrecurring fair value adjustments typically involve application of lower of cost or market accounting or impairment write-downs of individual assets.

The Company groups assets and liabilities at fair value in three levels, based on the markets in which the assets and liabilities are traded and the observable nature of the assumptions used to determine fair value. These levels are:

Level 1 -	Valuation is based upon quoted prices for identical instruments traded in active markets.
Level 2 -	Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market.
Level 3 -	Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques.

Securities available for sale - Securities available for sale are recorded at fair value on a recurring basis. Fair value measurement is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security’s credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets and money market funds. Level 2 securities include mortgage-backed securities issued by government sponsored entities, municipal bonds and corporate debt securities. The Company had no securities classified as Level 3 during any of the periods covered in these financial statements.

Loans held for sale – Loans held for sale are carried at the lower of cost or fair value. The fair value of loans held for sale is based on what secondary markets are currently offering for loans with similar characteristics. As such, we classify those loans subjected to nonrecurring fair value adjustments as Level 2.

Impaired originated and PNCI loans – Originated and PNCI loans are not recorded at fair value on a recurring basis. However, from time to time, an originated or PNCI loan is considered impaired and an allowance for loan losses is established. Originated and PNCI loans for which it is probable that payment of interest and principal will not be made in accordance with the contractual terms of the loan agreement are considered impaired. The fair value of an impaired originated or PNCI loan is estimated using one of several methods, including collateral value, fair value of similar debt, enterprise value, liquidation value and discounted cash flows. Those impaired originated and PNCI loans not requiring an allowance represent loans for which the fair value of the expected repayments or collateral exceed the recorded investments in such loans. Impaired originated and PNCI loans where an allowance is established based on the fair value of collateral require classification in the fair value hierarchy. When the fair value of the collateral is based on an observable market price or a current appraised value which uses substantially observable data, the Company records the impaired originated or PNCI loan as nonrecurring Level 2. When an appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value, or the appraised value contains a significant unobservable assumption, such as deviations from comparable sales, and there is no observable market price, the Company records the impaired originated or PNCI loan as nonrecurring Level 3.

Foreclosed assets - Foreclosed assets include assets acquired through, or in lieu of, loan foreclosure. Foreclosed assets are held for sale and are initially recorded at fair value at the date of foreclosure, establishing a new cost basis. Subsequent to foreclosure, management periodically performs valuations and the assets are carried at the lower of carrying amount or fair value less cost to sell. When the fair value of foreclosed assets is based on an observable market price or a current appraised value which uses substantially observable data, the Company records the impaired originated loan as nonrecurring Level 2. When an appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value, or the appraised value contains a significant unobservable assumption, such as deviations from comparable sales, and there is no observable market price, the Company records the foreclosed asset as nonrecurring Level 3. Revenue and expenses from operations and changes in the valuation allowance are included in other noninterest expense.

Mortgage servicing rights - Mortgage servicing rights are carried at fair value. A valuation model, which utilizes a discounted cash flow analysis using a discount rate and prepayment speed assumptions is used in the computation of the fair value measurement. While the prepayment speed assumption is currently quoted for comparable instruments, the discount rate assumption currently requires a significant degree of management judgment and is therefore considered an unobservable input. As such, the Company classifies mortgage servicing rights subjected to recurring fair value adjustments as Level 3. Additional information regarding mortgage servicing rights can be found in Note 10 in the consolidated financial statements at Item 1 of this report.

The table below presents the recorded amount of assets and liabilities measured at fair value on a recurring basis (in thousands):

Fair value at December 31, 2014	Total		Level 1		Level 2		Level 3
Securities available-for-sale:
Obligations of U.S. government corporations and agencies	$	75,120		—	$	75,120		—
Obligations of states and political subdivisions		3,175		—		3,175		—
Corporate debt securities		1,908		—		1,908		—
Marketable equity securities		3,002	$	3,002		—		—
Mortgage servicing rights		7,378		—		—	$	7,378
Total assets measured at fair value	$	90,583	$	3,002	$	80,203	$	7,378

Fair value at December 31, 2013	Total		Level 1		Level 2		Level 3
Securities available-for-sale:
Obligations of U.S. government corporations and agencies	$	97,143		—	$	97,143		—
Obligations of states and political subdivisions		5,589		—		5,589		—
Corporate debt securities		1,915		—		1,915		—
Mortgage servicing rights		6,165		—		—		6,165
Total assets measured at fair value	$	110,812		—	$	104,647	$	6,165

Transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally corresponds with the Company’s quarterly valuation process. There were no transfers between any levels during 2014 or 2013.

The following table provides a reconciliation of assets and liabilities measured at fair value using significant unobservable inputs (Level 3) on a recurring basis during the years ended December 31, 2014 and 2013. Had there been any transfer into or out of Level 3 during 2014 or 2013, the amount included in the “Transfers into (out of) Level 3” column would represent the beginning balance of an item in the period (interim quarter) during which it was transferred (in thousands):

Year ended December 31,	Beginning Balance		Transfers into (out of) Level 3		Change Included in Earnings			Issuances		Ending Balance
2014: Mortgage servicing rights	$	6,165	$	1,944	$	(1,301	)	$	570	$	7,378
2013: Mortgage servicing rights	$	4,552		—	$	253		$	1,360	$	6,165

The Company’s method for determining the fair value of mortgage servicing rights is described in Note 1. The key unobservable inputs used in determining the fair value of mortgage servicing rights are mortgage prepayment speeds and the discount rate used to discount cash projected cash flows. Generally, any significant increases in the mortgage prepayment speed and discount rate utilized in the fair value measurement of the mortgage servicing rights will result in a negative fair value adjustments (and decrease in the fair value measurement). Conversely, a decrease in the mortgage prepayment speed and discount rate will result in a positive fair value adjustment (and increase in the fair value measurement). Note 10 contains additional information regarding mortgage servicing rights.

The following table presents quantitative information about recurring Level 3 fair value measurements at December 31, 2014:

	Fair Value (in thousands)		Valuation Technique		Unobservable Inputs		Range, Weighted Average
Mortgage Servicing Rights	$	7,378		Discounted cash flow		Constant prepayment rate	5.7%-23.4%, 12.0%
						Discount rate	10.0%-12.0%, 10.0%

The tables below present the recorded amount of assets and liabilities measured at fair value on a nonrecurring basis, as of the dates indicated, that had a write-down or an additional allowance provided during the periods indicated (in thousands):

Year ended December 31, 2014	Total		Level 1		Level 2		Level 3		Total Gains (Losses)
Fair value:
Impaired Originated & PNCI loans	$	2,480		—		—	$	2,480	$	(636	)
Foreclosed assets		2,611		—		—		2,611	$	(137	)
Total assets measured at fair value	$	5,091		—		—	$	5,091	$	(773	)
Year ended December 31, 2013	Total		Level 1		Level 2		Level 3		Total Gains (Losses)
Fair value:
Impaired Originated & PNCI loans	$	20,334		—		—	$	20,334	$	(2,539	)
Foreclosed assets		948		—		—		948		(397	)
Total assets measured at fair value	$	21,282		—		—	$	21,282	$	(2,936	)

The impaired Originated and PNCI loan amount above represents impaired, collateral dependent loans that have been adjusted to fair value. When we identify a collateral dependent loan as impaired, we measure the impairment using the current fair value of the collateral, less selling costs. Depending on the characteristics of a loan, the fair value of collateral is generally estimated by obtaining external appraisals. If we determine that the value of the impaired loan is less than the recorded investment in the loan, we recognize this impairment and adjust the carrying value of the loan to fair value through the allowance for loan and lease losses. The loss represents charge-offs or impairments on collateral dependent loans for fair value adjustments based on the fair value of collateral. The carrying value of loans fully charged-off is zero.

The foreclosed assets amount above represents impaired real estate that has been adjusted to fair value. Foreclosed assets represent real estate which the Bank has taken control of in partial or full satisfaction of loans. At the time of foreclosure, other real estate owned is recorded at the lower of the carrying amount of the loan or fair value less costs to sell, which becomes the property’s new basis. Any write-downs based on the asset’s fair value at the date of acquisition are charged to the allowance for loan and lease losses. After foreclosure, management periodically performs valuations such that the real estate is carried at the lower of its new cost basis or fair value, net of estimated costs to sell. Fair value adjustments on other real estate owned are recognized within net loss on real estate owned. The loss represents impairments on non-covered other real estate owned for fair value adjustments based on the fair value of the real estate.

The Company’s property appraisals are primarily based on the sales comparison approach and income approach methodologies, which consider recent sales of comparable properties, including their income generating characteristics, and then make adjustments to reflect the general assumptions that a market participant would make when analyzing the property for purchase. These adjustments may increase or decrease an appraised value and can vary significantly depending on the location, physical characteristics and income producing potential of each property. Additionally, the quality and volume of market information available at the time of the appraisal can vary from period to period and cause significant changes to the nature and magnitude of comparable sale adjustments. Given these variations, comparable sale adjustments are generally not a reliable indicator for how fair value will increase or decrease from period to period. Under certain circumstances, management discounts are applied based on specific characteristics of an individual property.

The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at December 31, 2014:

	Fair Value (in thousands)		Valuation Technique	Unobservable Inputs	Range, Weighted Average
Impaired Originated & PNCI loans	$	2,480	Sales comparison approach	Adjustment for differences between comparable sales	(5.0)%-(42.5)%, (10.1)%
			Income approach	Capitalization rate	9.09%-9.09 %, 9.09%
Foreclosed assets	$	2,611	Sales comparison approach	Adjustment for differences between comparable sales	(5.0)%-(29.4)%, (8.2)%

In addition to the methods and assumptions used to estimate the fair value of each class of financial instrument noted above, the following methods and assumptions were used to estimate the fair value of other classes of financial instruments for which it is practical to estimate the fair value.

Short-term Instruments—Cash and due from banks, fed funds purchased and sold, interest receivable and payable, and short-term borrowings are considered short-term instruments. For these short-term instruments their carrying amount approximates their fair value.

Securities held to maturity – The fair value of securities held to maturity is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security’s credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets and money market funds. Level 2 securities include mortgage-backed securities issued by government sponsored entities, municipal bonds and corporate debt securities. The Company had no securities held to maturity classified as Level 3 during any of the periods covered in these financial statements.

Restricted Equity Securities—It is not practical to determine the fair value of restricted equity securities due to restrictions placed on its transferability.

Originated and PNCI loans - The fair value of variable rate originated and PNCI loans is the current carrying value. The interest rates on these originated and PNCI loans are regularly adjusted to market rates. The fair value of other types of fixed rate originated and PNCI loans is estimated by discounting the future cash flows using current rates at which similar loans would be made to borrowers with similar credit ratings for the same remaining maturities. The allowance for loan losses is a reasonable estimate of the valuation allowance needed to adjust computed fair values for credit quality of certain originated and PNCI loans in the portfolio.

PCI Loans—PCI loans are measured at estimated fair value on the date of acquisition. Carrying value is calculated as the present value of expected cash flows and approximates fair value.

FDIC Indemnification Asset—The fair value of the FDIC indemnification asset is based on the discounted value of expected future cash flows under the loss-share agreement.

Deposit Liabilities - The fair value of demand deposits, savings accounts, and certain money market deposits is the amount payable on demand at the reporting date. These values do not consider the estimated fair value of the Company’s core deposit intangible, which is a significant unrecognized asset of the Company. The fair value of time deposits and other borrowings is based on the discounted value of contractual cash flows.

Other Borrowings - The fair value of other borrowings is calculated based on the discounted value of the contractual cash flows using current rates at which such borrowings can currently be obtained.

Junior Subordinated Debentures - The fair value of junior subordinated debentures is estimated using a discounted cash flow model. The future cash flows of these instruments are extended to the next available redemption date or maturity date as appropriate based upon the spreads of recent issuances or quotes from brokers for comparable bank holding companies compared to the contractual spread of each junior subordinated debenture measured at fair value.

Commitments to Extend Credit and Standby Letters of Credit - The fair value of commitments is estimated using the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present credit worthiness of the counter parties. For fixed rate loan commitments, fair value also considers the difference between current levels of interest rates and the committed rates. The fair value of letters of credit is based on fees currently charged for similar agreements or on the estimated cost to terminate them or otherwise settle the obligation with the counter parties at the reporting date.

Fair values for financial instruments are management’s estimates of the values at which the instruments could be exchanged in a transaction between willing parties. These estimates are subjective and may vary significantly from amounts that would be realized in actual transactions. In addition, other significant assets are not considered financial assets including, any mortgage banking operations, deferred tax assets, and premises and equipment. Further, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on the fair value estimates and have not been considered in any of these estimates.

The estimated fair values of financial instruments that are reported at amortized cost in the Corporation’s consolidated balance sheets, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value, were as follows (in thousands):

	December 31, 2014						December 31, 2013
	Carrying Amount			Fair Value			Carrying Amount		Fair Value
Financial assets:
Level 1 inputs:
Cash and due from banks	$	93,150		$	93,150		$	76,915	$	76,915
Cash at Federal Reserve and other banks		517,578			517,578			521,453		521,453
Level 2 inputs:
Securities held to maturity		676,426			688,779			240,504		233,807
Restricted equity securities		16,956			N/A			9,163		N/A
Loans held for sale		3,579			3,579			2,270		2,270
Level 3 inputs:
Loans, net		2,282,524			2,379,155			1,672,007		1,760,274
Indemnification (liability) asset		(349	)		(349	)		206		206
Financial liabilities:
Level 2 inputs:
Deposits		3,380,423			3,380,486			2,410,483		2,411,402
Other borrowings		9,276			9,276			6,335		6,335
Level 3 inputs:
Junior subordinated debt		56,272			45,053			41,238		25,774
	Contract Amount			Fair Value			Contract Amount		Fair Value
Off-balance sheet:
Level 3 inputs:
Commitments	$	656,175		$	6,562		$	555,386	$	5,554
Standby letters of credit		17,531			175			2,601		26
Overdraft privilege commitments		101,060			1,011			68,932		689

XML

TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Balance Sheets (Parenthetical) (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Aug. 21, 2007
Condensed Financial Statements, Captions [Line Items]
Common stock, par value
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	22,714,964	16,076,662
Common stock, shares outstanding	22,714,964	16,076,662	15,814,662
Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Common stock, par value
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	22,714,964	16,076,662
Common stock, shares outstanding	22,714,964	16,076,662

XML

Retirement Plans - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Employee service period under ESOP	1 year
Contributions to the plan included in salary expense	$ 1,294,000	$ 1,648,000	$ 1,229,000
Deferred compensation obligations	7,408,000	7,357,000
Earnings credits on deferred balances	551,000	568,000	599,000
Accumulated other comprehensive loss	4,570,000	456,000	2,000
Deferred tax asset	3,315,000	331,000
Net actuarial loss	823,000
401(k) Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Minimum age for employees	21 years
Minimum period for employees to participate	90 days
Supplemental Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Cash values of the insurance policies purchased to fund deferred compensation obligations	92,337,000	52,309,000
Unfunded status of the supplemental retirement plans	7,885,000	787,000
Accumulated other comprehensive loss	4,570,000	456,000
Deferred tax asset	$ 3,315,000	$ 331,000

XML

TriCo Bancshares Condensed Financial Statements (Parent Only) (Tables)

12 Months Ended

Dec. 31, 2014

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

Condensed Balance Sheets

Condensed Balance Sheets

	December 31,
	2014			2013
	(in thousands)
Assets
Cash and Cash equivalents	$	2,229		$	2,520
Investment in Tri Counties Bank		470,797			288,746
Other assets		1,902			1,280
Total assets	$	474,928		$	292,546
Liabilities and shareholders’ equity
Other liabilities	$	484		$	362
Junior subordinated debt		56,272			41,238
Total liabilities		56,756			41,600
Shareholders’ equity:
Common stock, no par value: authorized 50,000,000 shares; issued and outstanding 22,714,964 and 16,076,662 shares, respectively		244,318			89,356
Retained earnings		176,057			159,733
Accumulated other comprehensive loss, net		(2,203	)		1,857
Total shareholders’ equity		418,172			250,946
Total liabilities and shareholders’ equity	$	474,928		$	292,546

Condensed Statements of Income

Condensed Statements of Income

	Years ended December 31,
	2014			2013			2012
	(in thousands)
Interest expense	$	(1,403	)	$	(1,247	)	$	(1,325	)
Administration expense		(2,720	)		(862	)		(669	)
Loss before equity in net income of Tri Counties Bank		(4,123	)		(2,109	)		(1,994	)
Equity in net income of Tri Counties Bank:
Distributed		8,270			8,175			8,522
Undistributed		20,720			20,446			11,632
Income tax benefit		1,241			887			834
Net income	$	26,108		$	27,399		$	18,994

Condensed Statements of Comprehensive Income

Condensed Statements of Comprehensive Income
	Years ended December 31,
	2014			2013			2012
	(in thousands)
Net income	$	26,108		$	27,399		$	18,994
Other comprehensive (loss) income, net of tax:
Unrealized holding (losses) gains on securities arising during the period		(94	)		(2,452	)		(1,216	)
Change in minimum pension liability		(4,114	)		1,750			(2	)
Change in joint beneficiary agreement liability		148			400			(434	)
Other comprehensive (loss) income		(4,060	)		(302	)		(1,652	)
Net income	$	22,048		$	27,097		$	17,342

Condensed Statements of Cash Flows

Condensed Statements of Cash Flows
	Years ended December 31,
	2014			2013			2012
	(in thousands)
Operating activities:
Net income	$	26,108		$	27,399		$	18,994
Adjustments to reconcile net income to net cash provided by operating activities:
Undistributed equity in earnings of Tri Counties Bank		(20,720	)		(20,446	)		(11,632	)
Stock option vesting expense		1,133			1,151			1,083
Stock option excess tax benefits		(225	)		(356	)		(44	)
Net change in other assets and liabilities		671			(1,100	)		(1,089	)
Net cash provided by operating activities		6,967			6,648			7,312
Investing activities: None
Financing activities:
Issuance of common stock through option exercise		616			251			206
Stock option excess tax benefits		225			356			44
Repurchase of common stock		(292	)		(501	)		—
Cash dividends paid — common		(7,807	)		(6,745	)		(5,757	)
Net cash used for financing activities		(7,258	)		(6,639	)		(5,507	)
(decrease) increase in cash and cash equivalents		(291	)		9			1,805
Cash and cash equivalents at beginning of year		2,520			2,511			706
Cash and cash equivalents at end of year	$	2,229		$	2,520		$	2,511

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Reserve for Unfunded Commitments

12 Months Ended

Dec. 31, 2014

Text Block [Abstract]

Reserve for Unfunded Commitments

Note 14 – Reserve for Unfunded Commitments

The following tables summarize the activity in reserve for unfunded commitments for the periods indicated (dollars in thousands):

	Years ended December 31,
	2014			2013			2012
Balance at beginning of period	$	2,415		$	3,615		$	2,740
Acquisitions		125			—			—
Provision for losses – Unfunded commitments		(395	)		(1,200	)		875
Balance at end of period	$	2,145		$	2,415		$	3,615

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TriCo Bancshares Condensed Financial Statements (Parent Only)

12 Months Ended

Dec. 31, 2014

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

TriCo Bancshares Condensed Financial Statements (Parent Only)

Note 28 - TriCo Bancshares Condensed Financial Statements (Parent Only)

Condensed Balance Sheets

	December 31,
	2014			2013
	(in thousands)
Assets
Cash and Cash equivalents	$	2,229		$	2,520
Investment in Tri Counties Bank		470,797			288,746
Other assets		1,902			1,280
Total assets	$	474,928		$	292,546
Liabilities and shareholders’ equity
Other liabilities	$	484		$	362
Junior subordinated debt		56,272			41,238
Total liabilities		56,756			41,600
Shareholders’ equity:
Common stock, no par value: authorized 50,000,000 shares; issued and outstanding 22,714,964 and 16,076,662 shares, respectively		244,318			89,356
Retained earnings		176,057			159,733
Accumulated other comprehensive loss, net		(2,203	)		1,857
Total shareholders’ equity		418,172			250,946
Total liabilities and shareholders’ equity	$	474,928		$	292,546

Condensed Statements of Income

	Years ended December 31,
	2014			2013			2012
	(in thousands)
Interest expense	$	(1,403	)	$	(1,247	)	$	(1,325	)
Administration expense		(2,720	)		(862	)		(669	)
Loss before equity in net income of Tri Counties Bank		(4,123	)		(2,109	)		(1,994	)
Equity in net income of Tri Counties Bank:
Distributed		8,270			8,175			8,522
Undistributed		20,720			20,446			11,632
Income tax benefit		1,241			887			834
Net income	$	26,108		$	27,399		$	18,994
Condensed Statements of Comprehensive Income
	Years ended December 31,
	2014			2013			2012
	(in thousands)
Net income	$	26,108		$	27,399		$	18,994
Other comprehensive (loss) income, net of tax:
Unrealized holding (losses) gains on securities arising during the period		(94	)		(2,452	)		(1,216	)
Change in minimum pension liability		(4,114	)		1,750			(2	)
Change in joint beneficiary agreement liability		148			400			(434	)
Other comprehensive (loss) income		(4,060	)		(302	)		(1,652	)
Net income	$	22,048		$	27,097		$	17,342
Condensed Statements of Cash Flows
	Years ended December 31,
	2014			2013			2012
	(in thousands)
Operating activities:
Net income	$	26,108		$	27,399		$	18,994
Adjustments to reconcile net income to net cash provided by operating activities:
Undistributed equity in earnings of Tri Counties Bank		(20,720	)		(20,446	)		(11,632	)
Stock option vesting expense		1,133			1,151			1,083
Stock option excess tax benefits		(225	)		(356	)		(44	)
Net change in other assets and liabilities		671			(1,100	)		(1,089	)
Net cash provided by operating activities		6,967			6,648			7,312
Investing activities: None
Financing activities:
Issuance of common stock through option exercise		616			251			206
Stock option excess tax benefits		225			356			44
Repurchase of common stock		(292	)		(501	)		—
Cash dividends paid — common		(7,807	)		(6,745	)		(5,757	)
Net cash used for financing activities		(7,258	)		(6,639	)		(5,507	)
(decrease) increase in cash and cash equivalents		(291	)		9			1,805
Cash and cash equivalents at beginning of year		2,520			2,511			706
Cash and cash equivalents at end of year	$	2,229		$	2,520		$	2,511

XML

Other Assets - Summary of Other Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred tax asset, net (Note 22)	$ 37,706	$ 26,781
Prepaid expense	2,034	2,131
Software	1,327	1,318
Advanced compensation	908	1,175
Capital Trusts	1,690	1,238
Miscellaneous other assets	8,070	3,443
Total other assets	$ 51,735	$ 36,086

XML

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes (Textual) [Abstract]
Unfunded status of the supplemental retirement plans, net of tax	$ (4,570,000)	$ (456,000)	$ (2,000)
Unrealized gains and losses on available-for-sale investment securities	(68,000)	(1,780,000)	(880,000)
Taxes (benefits) related to employee stock options	97,000	138,000	13,000
Taxes (benefits) related to changes in joint beneficiary agreement liability	0	0	64,000
Unrecognized tax benefit	227,000	0	0	0
Interest	0	0	22,000
Penalties	0	0	5,000
North Valley Bancorp [Member]
Income Taxes (Textual) [Abstract]
Unrecognized tax benefits, if recognized	158,000
Unrecognized tax benefit	245,000
Federal [Member]
Income Taxes (Textual) [Abstract]
Net operating loss carryforwards	13,700,000
Capital loss carryforwards	131,000
Tax credit carryforwards	69,000
California [Member]
Income Taxes (Textual) [Abstract]
Net operating loss carryforwards	35,200,000
Capital loss carryforwards	404,000
Tax credit carryforwards	$ 2,700,000

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Other Borrowings

12 Months Ended

Dec. 31, 2014

Text Block [Abstract]

Other Borrowings

Note 16 - Other Borrowings

A summary of the balances of other borrowings follows:

	December 31,
	2014		2013
	(in thousands)
Other collateralized borrowings, fixed rate, as of December 31, 2014 of 0.05%, payable on January 2, 2014	$	9,276	$	6,335
Total other borrowings	$	9,276	$	6,335

The Company did not enter into any other borrowings or repurchase agreements during 2014 or 2013.

The Company had $9,276,000 and $6,335,000 of other collateralized borrowings at December 31, 2014 and 2013, respectively. Other collateralized borrowings are generally overnight maturity borrowings from non-financial institutions that are collateralized by securities owned by the Company. As of December 31, 2014, the Company has pledged as collateral and sold under agreements to repurchase investment securities with fair value of $29,298,000 under these other collateralized borrowings.

The Company maintains a collateralized line of credit with the Federal Home Loan Bank of San Francisco. Based on the FHLB stock requirements at December 31, 2014, this line provided for maximum borrowings of $865,466,000 of which none was outstanding, leaving $865,466,000 available. As of December 31, 2014, the Company had designated investment securities with a fair value of $108,917,000 and loans totaling $1,217,944,000 as potential collateral under this collateralized line of credit with the FHLB.

The Company maintains a collateralized line of credit with the Federal Reserve Bank of San Francisco. As of December 31, 2014, this line provided for maximum borrowings of $138,545,000 of which none was outstanding, leaving $138,545,000 available. As of December 31, 2014, the Company has designated investment securities with fair value of $451,000 and loans totaling $200,282,000 as potential collateral under this collateralized line of credit with the FRB.

The Company has available unused correspondent banking lines of credit from commercial banks totaling $15,000,000 for federal funds transactions at December 31, 2014.

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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended		66 Months Ended
	Mar. 31, 2013	Jun. 30, 2009	Dec. 31, 2014 Segment Trust	Dec. 31, 2013	Dec. 31, 2014	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2013
Significant Of Accounting Policies [Line Items]
Number of subsidiary business trusts			5
Company's investments in the trusts			$ 1,690,000		1,690,000
Number of business segment			1
Trading securities			0	0	0
Recognized OTTI losses			0	0
Loans contractual past due			90 days
TDR loans payment period in nonaccrual status			6 months
Method used to estimate net sale proceeds	Greater of fifteen percent or actual estimated selling costs.
Allowance for loan losses			36,585,000	38,245,000	36,585,000			42,648,000	45,914,000
Allowance for loss factor weighted percentage		75.00%	125.00%
Reserve for unimpaired loans						1,438,000
Reserve for unfunded commitments due to change in methodology							335,000
Change in Accounting Method Accounted for as Change in Estimate [Member]
Significant Of Accounting Policies [Line Items]
Allowance for loan losses										1,665,000
Impaired real estate collateral dependent loans [Member]
Significant Of Accounting Policies [Line Items]
Allowance for loan losses	$ 494,000						$ 1,314,000
Tri Counties Bank [Member]
Significant Of Accounting Policies [Line Items]
Number of traditional operating branches			57
Number of in-store operating branches			16
California [Member]
Significant Of Accounting Policies [Line Items]
Number of counties			26
Minimum [Member]
Significant Of Accounting Policies [Line Items]
Allowance for loss factor weighted percentage					75.00%
Maximum [Member]
Significant Of Accounting Policies [Line Items]
Allowance for loss factor weighted percentage					125.00%
Furniture and equipment [Member] | Minimum [Member]
Significant Of Accounting Policies [Line Items]
Estimated useful lives of the related assets or lease terms			3 years
Furniture and equipment [Member] | Maximum [Member]
Significant Of Accounting Policies [Line Items]
Estimated useful lives of the related assets or lease terms			10 years
Land improvements and buildings [Member] | Minimum [Member]
Significant Of Accounting Policies [Line Items]
Estimated useful lives of the related assets or lease terms			15 years
Land improvements and buildings [Member] | Maximum [Member]
Significant Of Accounting Policies [Line Items]
Estimated useful lives of the related assets or lease terms			40 years

XML

Junior Subordinated Debt - Summary of Terms and Recorded Balance of Subordinated Debenture (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Oct. 03, 2014
Subordinated Borrowing [Line Items]
Subordinated debenture, Face Value	$ 62,889,000
Subordinated debenture, Recorded Book Value	56,272,000	41,238,000
TriCo Capital Trust I [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Maturity Date	Oct. 07, 2033
Subordinated debenture, Face Value	20,619,000
Subordinated debenture, Current Coupon Rate	3.28%
Subordinated debenture, Recorded Book Value	20,619,000
TriCo Capital Trust II [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Maturity Date	Jul. 23, 2034
Subordinated debenture, Face Value	20,619,000
Subordinated debenture, Current Coupon Rate	2.78%
Subordinated debenture, Recorded Book Value	20,619,000
North Valley Trust II [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Maturity Date	Apr. 24, 2033
Subordinated debenture, Face Value	6,186,000		6,186,000
Subordinated debenture, Current Coupon Rate	3.48%
Subordinated debenture, Recorded Book Value	5,015,000		5,006,000
North Valley Trust III [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Maturity Date	Apr. 24, 2034
Subordinated debenture, Face Value	5,155,000		5,155,000
Subordinated debenture, Current Coupon Rate	3.03%
Subordinated debenture, Recorded Book Value	3,927,000		3,918,000
North Valley Trust IV [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Maturity Date	Mar. 15, 2036
Subordinated debenture, Face Value	10,310,000		10,310,000
Subordinated debenture, Current Coupon Rate	1.57%
Subordinated debenture, Recorded Book Value	$ 6,092,000		$ 6,063,000
LIBOR PLUS [Member] | TriCo Capital Trust I [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Coupon Rate	3.05%
LIBOR PLUS [Member] | TriCo Capital Trust II [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Coupon Rate	2.55%
LIBOR PLUS [Member] | North Valley Trust II [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Coupon Rate	3.25%
LIBOR PLUS [Member] | North Valley Trust III [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Coupon Rate	2.80%
LIBOR PLUS [Member] | North Valley Trust IV [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Coupon Rate	1.33%

XML

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Dividends paid, per share	$ 0.44	$ 0.42	$ 0.36
Retained Earnings [Member]
Dividends paid, per share	$ 0.44	$ 0.42	$ 0.36

XML

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Aug. 21, 2007
Statement of Financial Position [Abstract]
Common stock, no par value
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	22,714,964	16,076,662
Common stock, shares outstanding	22,714,964	16,076,662	15,814,662

XML

Goodwill and Other Intangible Assets

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

Note 9 - Goodwill and Other Intangible Assets

The following table summarizes the Company’s goodwill intangible as of the dates indicated:

(Dollar in Thousands)	December 31, 2014		Additions		Reductions		December 31, 2013
Goodwill	$	63,462	$	47,943		—	$	15,519

The following table summarizes the Company’s core deposit intangibles as of the dates indicated:

(Dollar in Thousands)	December 31, 2014			Additions		Reductions/ Amortization			Fully Depreciated		December 31, 2013
Core deposit intangibles	$	8,074		$	6,614		—			—	$	1,460
Accumulated amortization		(1,023	)		—	$	(446	)		—		(577	)
Core deposit intangibles, net	$	7,051		$	6,614	$	(446	)		—	$	883

The Company recorded additions to CDI of $6,614,000 in conjunction with the North Valley Bancorp acquisition on October 3, 2014, $898,000 in conjunction with the Citizens acquisition on September 23, 2011, and $562,000 in conjunction with the Granite acquisition on May 28, 2010. The following table summarizes the Company’s estimated core deposit intangible amortization (dollars in thousands):

Years Ended	Estimated Core Deposit Intangible Amortization
2015	$	1,157
2016		1,157
2017		1,109
2018		1,044
2019		948
Thereafter	$	1,636

XML

Other Liabilities - Components of Other Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Other Liabilities Disclosure [Abstract]
Deferred compensation	$ 7,408	$ 7,357
Pension liability	26,798	14,634
Joint beneficiary agreements	2,728	2,623
Miscellaneous other liabilities	12,258	7,097
Total other liabilities	$ 49,192	$ 31,711

XML

Goodwill and Other Intangible Assets - Summary of Core Deposit Intangibles (Detail) (Core deposit intangibles [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Core deposit intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Core deposit intangibles, Beginning balance	$ 8,074
Core deposit intangibles, Reductions/Amortization	0
Core deposit intangibles, Additions	6,614
Core deposit intangibles, Ending balance	1,460
Accumulated amortization, Beginning balance	(1,023)
Accumulated amortization, Reductions/Amortization	(446)
Accumulated amortization, Additions	0
Accumulated amortization, Ending balance	(577)
Core deposit intangibles, net, Beginning balance	7,051
Core deposit intangibles, net, Reductions/Amortization	(446)
Core deposit intangibles, net, Additions	6,614
Core deposit intangibles, net, Ending balance	$ 883

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Cash Value of Life Insurance - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014 Company Policies	Dec. 31, 2013 Company
Insurance [Abstract]
Number of life insurance policies owned by the Company	189
Insurance companies used	14	6
Policies covering current and former employees and directors	60

XML

Income Taxes - Components of Consolidated Income Tax Expense (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current tax expense
Federal									$ 14,485	$ 11,618	$ 9,895
State									5,016	4,261	3,425
Current tax expense, Total									19,501	15,879	13,320
Deferred tax expense (benefit)
Federal									(794)	1,976	(235)
State									(199)	550	(148)
Deferred tax benefit, Total									(993)	2,526	(383)
Total tax expense	$ 3,930	$ 6,001	$ 3,537	$ 5,040	$ 3,406	$ 4,910	$ 4,272	$ 5,817	$ 18,508	$ 18,405	$ 12,937

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Retirement Plans - Defined Benefit Pension Plans (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]
Transition obligation	$ 9	$ 11
Prior service cost	(173)	(35)
Net actuarial loss	8,049	811
Amount included in accumulated other comprehensive loss	7,885	787
Deferred tax benefit	(3,315)	(331)
Amount included in accumulated other comprehensive loss, net of tax	$ 4,570	$ 456

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TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Balance Sheets (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Assets
Cash and Cash equivalents	$ 610,728,000	$ 598,368,000	$ 748,899,000	$ 637,275,000
Other assets	51,735,000	36,086,000
Total assets	3,916,458,000	2,744,066,000
Liabilities and shareholders' equity
Other liabilities	49,192,000	31,711,000
Junior subordinated debt	56,272,000	41,238,000
Total liabilities	3,498,286,000	2,493,120,000
Shareholders' equity:
Common stock, no par value: authorized 50,000,000 shares; issued and outstanding 22,714,964 and 16,076,662 shares, respectively	244,318,000	89,356,000
Retained earnings	176,057,000	159,733,000
Accumulated other comprehensive loss, net	(2,203,000)	1,857,000
Total shareholders' equity	418,172,000	250,946,000	229,359,000	216,441,000
Total liabilities and shareholders' equity	3,916,458,000	2,744,066,000
Parent [Member]
Assets
Cash and Cash equivalents	2,229,000	2,520,000	2,511,000	706,000
Investment in Tri Counties Bank	470,797,000	288,746,000
Other assets	1,902,000	1,280,000
Total assets	474,928,000	292,546,000
Liabilities and shareholders' equity
Other liabilities	484,000	362,000
Junior subordinated debt	56,272,000	41,238,000
Total liabilities	56,756,000	41,600,000
Shareholders' equity:
Common stock, no par value: authorized 50,000,000 shares; issued and outstanding 22,714,964 and 16,076,662 shares, respectively	244,318,000	89,356,000
Retained earnings	176,057,000	159,733,000
Accumulated other comprehensive loss, net	(2,203,000)	1,857,000
Total shareholders' equity	418,172,000	250,946,000
Total liabilities and shareholders' equity	$ 474,928,000	$ 292,546,000

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Noninterest Income and Expense - Components of Other Noninterest Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Service charges on deposit accounts									$ 11,811	$ 12,716	$ 14,290
ATM and interchange fees									9,651	8,370	7,762
Other service fees									2,206	2,144	2,223
Mortgage banking service fees									1,869	1,774	1,666
Change in value of mortgage servicing rights									(1,301)	253	(2,016)
Total service charges and fees									24,236	25,257	23,925
Gain on sale of loans									2,032	5,602	6,810
Commissions on sale of non-deposit investment products									2,995	2,983	3,209
Increase in cash value of life insurance									1,953	1,727	1,820
Change in indemnification asset									(856)	(1,649)	(286)
Gain on sale of foreclosed assets									2,153	1,640	786
Sale of customer checks									450	377	346
Lease brokerage income									504	337	276
Gain (loss) on disposal of fixed assets									49	(39)	(420)
Commission rebates											(56)
Gain on life insurance death benefit											675
Other									1,000	594	895
Total other noninterest income									10,280	11,572	14,055
Total noninterest income	$ 9,755	$ 8,589	$ 7,877	$ 8,295	$ 7,353	$ 9,127	$ 10,131	$ 10,218	$ 34,516	$ 36,829	$ 37,980

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Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Feb. 27, 2015	Jun. 30, 2014
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Trading Symbol	TCBK
Entity Registrant Name	TRICO BANCSHARES /
Entity Central Index Key	0000356171
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		22,740,503
Entity Public Float			$ 289,650,631

XML

Income Taxes - Summary of Changes in Unrecognized Tax Benefit (Including Interest and Penalties) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
UTB, Beginning Balance	$ 0	$ 0	$ 0
UTB, Additions for tax positions for prior years	227
UTB, Ending Balance	227	0	0
Interest/Penalties, Beginning Balance	0
Interest/Penalties, Additions for tax positions for prior years	18
Interest/Penalties, Ending Balance	18
Total, Beginning Balance	0
Total, Additions for tax positions for prior years	245
Total, Ending Balance	$ 245

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Mortgage Servicing Rights

12 Months Ended

Dec. 31, 2014

Text Block [Abstract]

Mortgage Servicing Rights

Note 10 - Mortgage Servicing Rights

The following tables summarize the activity in, and the main assumptions we used to determine the fair value of mortgage servicing rights for the periods indicated (dollars in thousands):

	Years ended December 31,
	2014			2013			2012
Balance at beginning of period	$	6,165		$	4,552		$	4,603
Acquisition		1,944			—			—
Originations		570			1,360			1,965
Change in fair value		(1,301	)		253			(2,016	)
Balance at end of period	$	7,378		$	6,165		$	4,552
Contractually specified servicing fees, late fees and ancillary fees earned	$	1,869		$	1,774		$	1,666
Balance of loans serviced at:
Beginning of period	$	680,197		$	666,512		$	598,185
End of period	$	840,288		$	680,197		$	666,512
Weighted-average prepayment speed (CPR)		12.0	%		10.3	%		20.3	%
Weighted-average discount rate		10.0	%		10.0	%		10.0	%

The changes in fair value of MSRs that occurred during 2014 and 2013 were mainly due to changes in principal balances and changes in estimate life of the MSRs.

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Loans - Change in Accretable Yield for PCI (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Change in accretable yield:
Balance at beginning of period	$ 18,232	$ 22,337
Accretion to interest income	(4,368)	(6,305)
Reclassification (to) from nonaccretable difference	1,009	2,201
Balance at end of period	$ 14,873	$ 18,232

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Cash Value of Life Insurance - Summary of Activity in Balance of Cash Value of Life Insurance (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 Company Policies Employees	Dec. 31, 2013 Employees Company Policies
Increase (Decrease) in Insurance Liabilities [Abstract]
Beginning balance	$ 52,309	$ 50,582
Acquisitions	38,075
Increase in cash value of life insurance	1,953	1,727
Ending balance	92,337	52,309
End of period death benefit	$ 165,966	$ 95,513
Number of policies owned	189	133
Insurance companies used	14	6
Current and former employees and directors covered	60	36

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Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Interest and dividend income:
Loans, including fees	$ 103,887	$ 97,548	$ 100,496
Debt securities:
Taxable	14,753	6,349	6,072
Tax exempt	505	583	428
Dividends	837	387	105
Interest bearing cash at Federal Reserve and other banks	1,133	1,693	1,615
Total interest and dividend income	121,115	106,560	108,716
Interest expense:
Deposits	3,274	3,445	4,416
Other borrowings	4	4	1,604
Junior subordinated debt	1,403	1,247	1,324
Total interest expense	4,681	4,696	7,344
Net interest income	116,434	101,864	101,372
(Benefit from) provision for loan losses	(4,045)	(715)	9,423
Net interest income after provision for loan losses	120,479	102,579	91,949
Noninterest income:
Service charges and fees	24,236	25,257	23,925
Gain on sale of loans	2,032	5,602	6,810
Commissions on sale of non-deposit investment products	2,995	2,983	3,209
Increase in cash value of life insurance	1,953	1,727	1,820
Other	3,300	1,260	2,216
Total noninterest income	34,516	36,829	37,980
Noninterest expense:
Salaries and related benefits	57,544	51,936	49,952
Other	52,835	41,668	48,046
Total noninterest expense	110,379	93,604	97,998
Income before income taxes	44,616	45,804	31,931
Provision for income taxes	18,508	18,405	12,937
Net income	$ 26,108	$ 27,399	$ 18,994
Earnings per share:
Basic	$ 1.47	$ 1.71	$ 1.19
Diluted	$ 1.46	$ 1.69	$ 1.18

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Loans

12 Months Ended

Dec. 31, 2014

Receivables [Abstract]

Loans

Note 4 – Loans

A summary of loan balances follows (in thousands):

	December 31, 2014
	Originated			PNCI			PCI - Cash basis			PCI - Other			Total
Mortgage loans on real estate:
Residential 1-4 family	$	154,594		$	120,821			—		$	4,005		$	279,420
Commercial		928,797			376,225			—			30,917			1,335,939
Total mortgage loan on real estate		1,083,391			497,046			—			34,922			1,615,359
Consumer:
Home equity lines of credit		305,166			38,397		$	5,478			3,543			352,584
Home equity loans		23,559			6,985			125			645			31,314
Auto Indirect		112			—			—			—			112
Other		28,230			4,770			—			74			33,074
Total consumer loans		357,067			50,152			5,603			4,262			417,084
Commercial		126,611			40,899			8			7,427			174,945
Construction:
Residential		21,135			16,808			—			675			38,618
Commercial		24,545			11,973			—			—			36,518
Total construction		45,680			28,781			—			675			75,136
Total loans, net of deferred loan fees and discounts	$	1,612,749		$	616,878		$	5,611		$	47,286		$	2,282,524
Total principal balance of loans owed, net of charge-offs	$	1,617,542		$	634,490		$	14,805		$	56,016		$	2,322,853
Unamortized net deferred loan fees		(4,793	)		—			—			—			(4,793	)
Discounts to principal balance of loans owed, net of charge-offs		—			(17,612	)		(9,194	)		(8,730	)		(35,536	)
Total loans, net of unamortized deferred loan fees and discounts	$	1,612,749		$	616,878		$	5,611		$	47,286		$	2,282,524
Noncovered loans	$	1,612,749		$	616,878		$	5,611		$	25,018		$	2,260,256
Covered loans		—			—			—			22,268			22,268
Total loans, net of unamortized deferred loan fees and discounts	$	1,612,749		$	616,878		$	5,611		$	47,286		$	2,282,524
Allowance for loan losses	$	(29,860	)	$	(3,296	)	$	(348	)	$	(3,081	)	$	(36,585	)

A summary of loan balances follows (in thousands):

	December 31, 2013
	Originated			PNCI			PCI - Cash basis			PCI - Other			Total
Mortgage loans on real estate:
Residential 1-4 family	$	129,882		$	60,475			—		$	4,656		$	195,013
Commercial		824,912			57,678			—			30,260			912,850
Total mortgage loan on real estate		954,794			118,153			—			34,916			1,107,863
Consumer:
Home equity lines of credit		316,207			13,576		$	6,200			3,883			339,866
Home equity loans		13,849			253			—			486			14,588
Auto Indirect		946			—			—			—			946
Other		25,608			2,074			—			81			27,763
Total consumer loans		356,610			15,903			6,200			4,450			383,163
Commercial		124,650			693			19			6,516			131,878
Construction:
Residential		30,367			—			—			1,566			31,933
Commercial		17,125			—			—			45			17,170
Total construction		47,492			—			—			1,611			49,103
Total loans, net of deferred loan fees and discounts	$	1,483,546		$	134,749		$	6,219		$	47,493		$	1,672,007
Total principal balance of loans owed, net of charge-offs	$	1,487,240		$	142,786		$	16,475		$	56,879		$	1,703,380
Unamortized net deferred loan fees		(3,694	)		—			—			—			(3,694	)
Discounts to principal balance of loans owed, net of charge-offs		—			(8,037	)		(10,256	)		(9,386	)		(27,679	)
Total loans, net of unamortized deferred loan fees and discounts	$	1,483,546		$	134,749		$	6,219		$	47,493		$	1,672,007
Noncovered loans	$	1,483,546		$	134,749		$	6,219		$	19,581		$	1,644,095
Covered loans		—			—			—			27,912			27,912
Total loans, net of unamortized deferred loan fees and discounts	$	1,483,546		$	134,749		$	6,219		$	47,493		$	1,672,007
Allowance for loan losses	$	(31,354	)	$	(2,850	)	$	(385	)	$	(3,656	)	$	(38,245	)

The following is a summary of the change in accretable yield for PCI – other loans during the periods indicated (in thousands):

	Year ended December 31,
	2014			2013
Change in accretable yield:
Balance at beginning of period	$	18,232		$	22,337
Accretion to interest income		(4,368	)		(6,305	)
Reclassification (to) from nonaccretable difference		1,009			2,201
Balance at end of period	$	14,873		$	18,232

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Investment Securities

12 Months Ended

Dec. 31, 2014

Investments, Debt and Equity Securities [Abstract]

Investment Securities

Note 3 - Investment Securities

The amortized cost and estimated fair values of investments in debt and equity securities are summarized in the following tables:

	December 31, 2014
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(in thousands)
Securities Available for Sale
Obligations of U.S. government corporations and agencies	$	71,144		4,001		(25	)	$	75,120
Obligations of states and political subdivisions		3,130		45		—			3,175
Corporate debt securities		1,891		17		—			1,908
Marketable equity securities		3,000		2		—			3,002
Total securities available for sale	$	79,165	$	4,065	$	(25	)	$	83,205
Securities Held to Maturity
Obligations of U.S. government corporations and agencies	$	660,836		13,055		(677	)	$	673,214
Obligations of states and political subdivisions		15,590		130		(155	)		15,565
Total securities held to maturity	$	676,426	$	13,185	$	(832	)	$	688,779

	December 31, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(in thousands)
Securities Available for Sale
Obligations of U.S. government corporations and agencies	$	93,055	$	4,445	$	(357	)	$	97,143
Obligations of states and political subdivisions		5,513		77		(1	)		5,589
Corporate debt securities		1,877		38		—			1,915
Total securities available for sale	$	100,445	$	4,560	$	(358	)	$	104,647
Securities Held to Maturity
Obligations of U.S. government corporations and agencies	$	227,864	$	298	$	(5,540	)	$	222,622
Obligations of states and political subdivisions		12,640		—		(1,455	)		11,185
Total securities held to maturity	$	240,504	$	298	$	(6,995	)	$	233,807

Investment securities totaling $14,130,000 were sold in 2014 resulting in no gain or loss on sale. No investment securities were sold during 2013, or 2012. Investment securities with an aggregate carrying value of $143,992,000 and $62,064,000 at December 31, 2014 and 2013, respectively, were pledged as collateral for specific borrowings, lines of credit and local agency deposits.

The amortized cost and estimated fair value of debt securities at December 31, 2014 by contractual maturity are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. At December 31, 2014, obligations of U.S. government corporations and agencies with a cost basis totaling $755,591,000 consist almost entirely of mortgage-backed securities whose contractual maturity, or principal repayment, will follow the repayment of the underlying mortgages. For purposes of the following table, the entire outstanding balance of these mortgage-backed securities issued by U.S. government corporations and agencies is categorized based on final maturity date. At December 31, 2014, the Company estimates the average remaining life of these mortgage-backed securities issued by U.S. government corporations and agencies to be approximately 5.3 years. Average remaining life is defined as the time span after which the principal balance has been reduced by half.

Investment Securities	Available for Sale				Held to Maturity
(In thousands)	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Due in one year	$	1,924	$	1,942		—		—
Due after one year through five years		1,095		1,135		—		—
Due after five years through ten years		30,977		32,316	$	1,118	$	1,106
Due after ten years		45,169		47,812		675,308		687,673
Totals	$	79,165	$	83,205	$	676,426	$	688,779

Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, were as follows:

	Less than 12 months					12 months or more					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
December 31, 2014	(in thousands)
Securities Available for Sale:
Obligations of U.S. government corporations and agencies	$	6,774		(25	)		—		—			6,774		(25	)
Obligations of states and political subdivisions		—		—			—		—			—		—
Corporate debt securities		—		—			—		—			—		—
Marketable equity securities		—		—			—		—			—		—
Total securities available-for-sale	$	6,774		(25	)		—		—			6,774		(25	)
Securities Held to Maturity:
Obligations of U.S. government corporations and agencies	$	335		(1	)		56,288		(676	)		56,623		(677	)
Obligations of states and political subdivisions		1,600		(26	)		1,858		(129	)		3,458		(155	)
Corporate debt securities		—		—			—		—			—		—
Total securities held-to-maturity	$	1,935		(27	)		58,146		(805	)		60,081		(832	)

	Less than 12 months					12 months or more				Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
December 31, 2013	(in thousands)
Securities Available for Sale:
Obligations of U.S. government corporations and agencies	$	10,287	$	(357	)		—		—	$	10,287	$	(357	)
Obligations of states and political subdivisions		199		(1	)		—		—		199		(1	)
Corporate debt securities		—		—			—		—		—		—
Total securities available-for-sale	$	10,486	$	(358	)		—		—	$	10,486	$	(358	)
Securities Held to Maturity:
Obligations of U.S. government corporations and agencies	$	188,218	$	(5,540	)		—		—	$	188,218	$	(5,540	)
Obligations of states and political subdivisions		11,185		(1,455	)		—		—		11,185		(1,455	)
Corporate debt securities		—		—			—		—		—		—
Total securities held-to-maturity	$	199,403	$	(6,995	)		—		—	$	199,403	$	(6,995	)

Obligations of U.S. government corporations and agencies: Unrealized losses on investments in obligations of U.S. government corporations and agencies are caused by interest rate increases. The contractual cash flows of these securities are guaranteed by U.S. Government Sponsored Entities (principally Fannie Mae and Freddie Mac). It is expected that the securities would not be settled at a price less than the amortized cost of the investment. Because the decline in fair value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell and more likely than not will not be required to sell, these investments are not considered other-than-temporarily impaired. At December 31, 2014, 8 debt securities representing obligations of U.S. government corporations and agencies had unrealized losses with aggregate depreciation of 1.10% from the Company’s amortized cost basis.

Obligations of states and political subdivisions: The unrealized losses on investments in obligations of states and political subdivisions were caused by increases in required yields by investors in these types of securities. It is expected that the securities would not be settled at a price less than the amortized cost of the investment. Because the decline in fair value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell and more likely than not will not be required to sell, these investments are not considered other-than-temporarily impaired. At December 31, 2014, 5 debt securities representing obligations of states and political subdivisions had unrealized losses with aggregate depreciation of 4.26% from the Company’s amortized cost basis.

Corporate debt securities: At December 31, 2014, no corporate debt securities had unrealized losses.

Marketable equity securities: At December 31, 2014, no marketable equity securities had unrealized losses.

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Fair Value Measurement - Quantitative Information about Level 3 Fair Value Measurements for Financial Instruments Measured at Fair Value on Nonrecurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	5,091	$ 21,282
Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	2,480	20,334
Foreclosed assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	2,611	948
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	5,091	21,282
Level 3 [Member] | Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	2,480	20,334
Level 3 [Member] | Foreclosed assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	2,611	$ 948
Level 3 [Member] | Sales comparison approach [Member] | Minimum [Member] | Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjustment for differences between comparable sales	(5.00%)
Level 3 [Member] | Sales comparison approach [Member] | Minimum [Member] | Foreclosed assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjustment for differences between comparable sales	(5.00%)
Level 3 [Member] | Sales comparison approach [Member] | Maximum [Member] | Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjustment for differences between comparable sales	(42.50%)
Level 3 [Member] | Sales comparison approach [Member] | Maximum [Member] | Foreclosed assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjustment for differences between comparable sales	(29.40%)
Level 3 [Member] | Sales comparison approach [Member] | Weighted Average [Member] | Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjustment for differences between comparable sales	(10.10%)
Level 3 [Member] | Sales comparison approach [Member] | Weighted Average [Member] | Foreclosed assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjustment for differences between comparable sales	(8.20%)
Level 3 [Member] | Income approach [Member] | Minimum [Member] | Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Capitalization rate	9.09%
Level 3 [Member] | Income approach [Member] | Maximum [Member] | Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Capitalization rate	9.09%
Level 3 [Member] | Income approach [Member] | Weighted Average [Member] | Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Capitalization rate	9.09%

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Other Liabilities

12 Months Ended

Dec. 31, 2014

Other Liabilities Disclosure [Abstract]

Other Liabilities

Note 15 – Other Liabilities

Other liabilities were comprised of (in thousands):

	December 31,
	2014		2013
Deferred compensation	$	7,408	$	7,357
Pension liability		26,798		14,634
Joint beneficiary agreements		2,728		2,623
Miscellaneous other liabilities		12,258		7,097
Total other liabilities	$	49,192	$	31,711

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Indemnification Asset

12 Months Ended

Dec. 31, 2014

Text Block [Abstract]

Indemnification Asset

Note 11 - Indemnification Asset

A summary of the activity in the balance of indemnification asset (liability) included in other assets is follows (in thousands):

	Year ended December 31,
	2014			2013			2012
Beginning balance	$	206		$	1,997		$	4,405
Effect of actual covered losses (recoveries) and increase (decrease) in estimated future covered losses		(869	)		(1,419	)		(245	)
Reimbursable (revenue) expenses incurred		69			(159	)		69
Payments made (received)		245			(213	)		(2,232	)
Ending balance	$	(349	)	$	206		$	1,997

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Allowance for Loan Losses - Analysis of Past Due and Nonaccrual Loans (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due: 30-59 Days	$ 5,519	$ 8,321
60-89 Days	1,530	1,661
> 90 Days	2,080	4,824
Total past due	9,129	14,806
Current	1,603,620	1,468,740
Total orig. loans	1,612,749	1,483,546
> 90 Days and still accruing	0	0
Nonaccrual loans	32,529	45,131
PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due: 30-59 Days	2,668	1,673
60-89 Days	145	390
> 90 Days	413	217
Total past due	3,226	2,280
Current	613,652	132,469
Total orig. loans	616,878	134,749
> 90 Days and still accruing	0	0
Nonaccrual loans	1,646	1,866
RE Mortgage [Member] | Residential [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due: 30-59 Days	1,296	2,272
60-89 Days	919	284
> 90 Days	100	447
Total past due	2,315	3,003
Current	152,279	126,879
Total orig. loans	154,594	129,882
> 90 Days and still accruing	0	0
Nonaccrual loans	3,430	4,697
RE Mortgage [Member] | Residential [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due: 30-59 Days	2,041	799
60-89 Days	24
> 90 Days	239
Total past due	2,304	799
Current	118,517	59,676
Total orig. loans	120,821	60,475
> 90 Days and still accruing	0	0
Nonaccrual loans	799	262
RE Mortgage [Member] | Commercial [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due: 30-59 Days	735	2,304
> 90 Days	900	2,213
Total past due	1,635	4,517
Current	927,162	820,395
Total orig. loans	928,797	824,912
> 90 Days and still accruing	0	0
Nonaccrual loans	20,736	30,732
RE Mortgage [Member] | Commercial [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due: 30-59 Days	260	512
60-89 Days		352
> 90 Days		217
Total past due	260	1,081
Current	375,965	56,597
Total orig. loans	376,225	57,678
> 90 Days and still accruing	0	0
Nonaccrual loans	366	1,139
Home equity lines of credit [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due: 30-59 Days	2,066	3,121
60-89 Days	296	1,070
> 90 Days	754	1,050
Total past due	3,116	5,241
Current	302,050	310,966
Total orig. loans	305,166	316,207
> 90 Days and still accruing	0	0
Nonaccrual loans	4,336	4,972
Home equity lines of credit [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due: 30-59 Days	275	313
60-89 Days	118	38
> 90 Days	73
Total past due	466	351
Current	37,931	13,225
Total orig. loans	38,397	13,576
> 90 Days and still accruing	0	0
Nonaccrual loans	346	429
Home equity loans [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due: 30-59 Days	615	264
60-89 Days	192	16
> 90 Days	202	312
Total past due	1,009	592
Current	22,550	13,257
Total orig. loans	23,559	13,849
> 90 Days and still accruing	0	0
Nonaccrual loans	1,197	719
Home equity loans [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
> 90 Days	25
Total past due	25
Current	6,960	253
Total orig. loans	6,985	253
> 90 Days and still accruing	0	0
Nonaccrual loans	25
Auto Indirect [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due: 30-59 Days	4	24
60-89 Days		1
> 90 Days	17	33
Total past due	21	58
Current	91	888
Total orig. loans	112	946
> 90 Days and still accruing	0	0
Nonaccrual loans	18	54
Auto Indirect [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
> 90 Days and still accruing	0	0
Other Consumer [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due: 30-59 Days	64	40
60-89 Days	24	16
> 90 Days	46	7
Total past due	134	63
Current	28,096	25,545
Total orig. loans	28,230	25,608
> 90 Days and still accruing	0	0
Nonaccrual loans	66	26
Other Consumer [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due: 30-59 Days	25	49
60-89 Days	3
> 90 Days	76
Total past due	104	49
Current	4,666	2,025
Total orig. loans	4,770	2,074
> 90 Days and still accruing	0	0
Nonaccrual loans	110	36
C&I [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due: 30-59 Days	739	296
60-89 Days	99	76
> 90 Days	61	749
Total past due	899	1,121
Current	125,712	123,529
Total orig. loans	126,611	124,650
> 90 Days and still accruing	0	0
Nonaccrual loans	246	1,280
C&I [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due: 30-59 Days	67
Total past due	67
Current	40,832	693
Total orig. loans	40,899	693
> 90 Days and still accruing	0	0
Construction [Member] | Residential [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
> 90 Days		13
Total past due		13
Current	21,135	30,354
Total orig. loans	21,135	30,367
> 90 Days and still accruing	0	0
Nonaccrual loans	2,401	2,473
Construction [Member] | Residential [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	16,808
Total orig. loans	16,808
> 90 Days and still accruing	0	0
Construction [Member] | Commercial [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
60-89 Days		198
Total past due		198
Current	24,545	16,927
Total orig. loans	24,545	17,125
> 90 Days and still accruing	0	0
Nonaccrual loans	99	178
Construction [Member] | Commercial [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	11,973
Total orig. loans	11,973
> 90 Days and still accruing	$ 0	$ 0

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Premises and Equipment

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Premises and Equipment

Note 7 - Premises and Equipment

Premises and equipment were comprised of:

	December 31, 2014			December 31, 2013
	(In thousands)
Land & land improvements	$	8,933		$	5,975
Buildings		39,638			30,103
Furniture and equipment		28,446			27,881
		77,017			63,959
Less: Accumulated depreciation		(33,570	)		(32,397	)
		43,447			31,562
Construction in progress		46			50
Total premises and equipment	$	43,493		$	31,612

Depreciation expense for premises and equipment amounted to $4,648,000, $3,635,000, and $3,250,000 in 2014, 2013, and 2012, respectively.

XML

TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Statements of Cash Flows (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating activities:
Net income	$ 26,108	$ 27,399	$ 18,994
Adjustments to reconcile net income to net cash provided by operating activities:
Stock option vesting expense	1,133	1,151	1,083
Stock option excess tax benefits	(225)	(356)	(44)
Net cash provided by operating activities	27,417	41,086	52,063
Financing activities:
Stock option excess tax benefits	225	356	44
Repurchase of common stock	(292)	(501)
Cash dividends paid - common	(7,807)	(6,745)	(5,757)
Net cash used for financing activities	163,667	111,280	30,315
(decrease) increase in cash and cash equivalents	12,360	(150,531)	111,624
Cash and cash equivalents and beginning of year	598,368	748,899	637,275
Cash and cash equivalents at end of year	610,728	598,368	748,899
Parent [Member]
Operating activities:
Net income	26,108	27,399	18,994
Adjustments to reconcile net income to net cash provided by operating activities:
Undistributed equity in earnings of Tri Counties Bank	(20,720)	(20,446)	(11,632)
Stock option vesting expense	1,133	1,151	1,083
Stock option excess tax benefits	(225)	(356)	(44)
Net change in other assets and liabilities	671	(1,100)	(1,089)
Net cash provided by operating activities	6,967	6,648	7,312
Financing activities:
Issuance of common stock through option exercise	616	251	206
Stock option excess tax benefits	225	356	44
Repurchase of common stock	(292)	(501)
Cash dividends paid - common	(7,807)	(6,745)	(5,757)
Net cash used for financing activities	(7,258)	(6,639)	(5,507)
(decrease) increase in cash and cash equivalents	(291)	9	1,805
Cash and cash equivalents and beginning of year	2,520	2,511	706
Cash and cash equivalents at end of year	$ 2,229	$ 2,520	$ 2,511

XML

Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2014

Earnings Per Share [Abstract]

Computation of Earnings Per Share

Earnings per share have been computed based on the following:

	Years ended December 31,
	2014		2013		2012
Net income (in thousands)	$	26,108	$	27,399	$	18,994
(number of shares in thousands)
Average number of common shares outstanding		17,716		16,045		15,988
Effect of dilutive stock options		207		152		64
Average number of common shares outstanding used to calculate diluted earnings per share		17,923		16,197		16,052

XML

Commitments and Contingencies - Future Minimum Commitments under Non-Cancelable Operating Leases with Initial or Remaining Terms of One Year or More (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Leases [Abstract]
2015	$ 3,419
2016	2,510
2017	1,856
2018	1,323
2019	859
Thereafter	1,180
Future minimum lease payments	$ 11,147

XML

Allowance for Loan Losses

12 Months Ended

Dec. 31, 2014

Receivables [Abstract]

Allowance for Loan Losses

Note 5 – Allowance for Loan Losses

The following tables summarize the activity in the allowance for loan losses, and ending balance of loans, net of unearned fees for the periods indicated.

	Allowance for Loan Losses - Year Ended December 31, 2014
	RE Mortgage						Home Equity						Auto Indirect			Other Consum.						Construction
(in thousands)	Resid.			Comm.			Lines			Loans									C&I			Resid.			Comm.			Total
Beginning balance	$	3,154		$	9,700		$	16,375		$	1,208		$	66		$	589		$	4,331		$	1,559		$	1,263		$	38,245
Charge-offs		(171	)		(110	)		(1,094	)		(29	)		(3	)		(599	)		(479	)		(4	)		(69	)		(2,558	)
Recoveries		2			540			960			34			86			495			1,268			1,377			181			4,943
(Benefit) provision		101			(903	)		(565	)		584			(140	)		234			(894	)		(1,498	)		(964	)		(4,045	)
Ending balance	$	3,086		$	9,227		$	15,676		$	1,797		$	9		$	719		$	4,226		$	1,434		$	411		$	36,585
Ending balance:
Individ. evaluated for impairment	$	974		$	410		$	1,974		$	284			—		$	142		$	423		$	60			—		$	4,267
Loans pooled for evaluation	$	1,915		$	8,408		$	13,251		$	1,513		$	9		$	572		$	2,569		$	332		$	322		$	28,891
Loans acquired with deteriorated credit quality	$	197		$	409		$	451			—			—		$	5		$	1,234		$	1,042		$	89		$	3,427
	Loans, net of unearned fees - As of December 31, 2014
	RE Mortgage						Home Equity						Auto Indirect			Other Consum.						Construction
(in thousands)	Resid.			Comm.			Lines			Loans									C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	279,420		$	1,335,939		$	352,584		$	31,314		$	112		$	33,074		$	174,945		$	38,618		$	35,518		$	2,282,524
Individ. evaluated for impairment	$	7,188		$	41,932		$	6,968		$	1,278		$	18		$	323		$	1,757		$	2,683		$	99		$	62,246
Loans pooled for evaluation	$	268,227		$	1,263,090		$	336,595		$	29,266		$	94		$	32,677		$	165,753		$	35,260		$	36,419		$	2,167,381
Loans acquired with deteriorated credit quality	$	4,005		$	30,917		$	9,021		$	770			—		$	74		$	7,435		$	675			—		$	52,897
	Allowance for Loan Losses - Year Ended December 31, 2013
	RE Mortgage						Home Equity						Auto Indirect			Other Consum.						Construction
(in thousands)	Resid.			Comm.			Lines			Loans									C&I			Resid.			Comm.			Total
Beginning balance	$	3,523		$	8,782		$	21,367		$	1,155		$	243		$	696		$	4,703		$	1,400		$	779		$	42,648
Charge-offs		(46	)		(2,038	)		(2,651	)		(94	)		(68	)		(887	)		(1,599	)		(20	)		(140	)		(7,543	)
Recoveries		345			994			1,053			41			195			759			340			63			65			3,855
(Benefit) provision		(668	)		1,962			(3,394	)		106			(304	)		21			887			116			559			(715	)
Ending balance	$	3,154		$	9,700		$	16,375		$	1,208		$	66		$	589		$	4,331		$	1,559		$	1,263		$	38,245
Ending balance:
Individ. evaluated for impairment	$	775		$	1,198		$	1,140		$	169		$	1		$	8		$	585		$	91		$	8		$	3,975
Loans pooled for evaluation	$	2,039		$	7,815		$	14,749		$	1,039		$	65		$	581		$	2,402		$	751		$	789		$	30,230
Loans acquired with deteriorated credit quality	$	340		$	687		$	486			—			—			—		$	1,344		$	717		$	466		$	4,040
	Loans, net of unearned fees - As of December 31, 2013
	RE Mortgage						Home Equity						Auto Indirect			Other Consum.						Construction
(in thousands)	Resid.			Comm.			Lines			Loans									C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	195,013		$	912,850		$	339,866		$	14,588		$	946		$	27,763		$	131,878		$	31,933		$	17,170		$	1,672,007
Individ. evaluated for impairment	$	7,342		$	59,936		$	6,918		$	778		$	60		$	90		$	3,177		$	2,756		$	178		$	81,235
Loans pooled for evaluation	$	183,015		$	822,654		$	322,865		$	13,324		$	886		$	27,592		$	122,166		$	27,611		$	16,947		$	1,537,060
Loans acquired with deteriorated credit quality	$	4,656		$	30,260		$	10,083		$	486			—		$	81		$	6,535		$	1,566		$	45		$	53,712

	Allowance for Loan Losses - Year Ended December 31, 2012
	RE Mortgage						Home Equity						Auto Indirect			Other Consum.						Construction
(in thousands)	Resid.			Comm.			Lines			Loans									C&I			Resid.			Comm.			Total
Beginning balance	$	2,404		$	13,217		$	18,258		$	1,101		$	215		$	932		$	6,545		$	1,817		$	1,425		$	45,914
Charge-offs		(1,558	)		(3,457	)		(8,042	)		(385	)		(83	)		(1,202	)		(1,251	)		(406	)		(100	)		(16,484	)
Recoveries		147			1,020			398			100			215			860			643			412			—			3,795
Provision (benefit)		2,530			(1,998	)		10,753			339			(104	)		106			(1,234	)		(423	)		(546	)		9,423
Ending balance	$	3,523		$	8,782		$	21,367		$	1,155		$	243		$	696		$	4,703		$	1,400		$	779		$	42,648
Ending balance:
Individ. evaluated for impairment	$	631		$	515		$	2,264		$	81		$	5		$	47		$	840		$	11		$	111		$	4,505
Loans pooled for evaluation	$	2,526		$	8,026		$	17,862		$	995		$	238		$	649		$	2,342		$	430		$	165		$	33,233
Loans acquired with deteriorated credit quality	$	366		$	241		$	1,241		$	79			—			—		$	1,521		$	959		$	503		$	4,910
	Loans, net of unearned fees – As of December 31, 2012
	RE Mortgage						Home Equity						Auto Indirect			Other Consum.						Construction
(in thousands)	Resid.			Comm.			Lines			Loans									C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	131,684		$	878,446		$	342,025		$	13,557		$	3,816		$	26,713		$	135,528		$	18,459		$	14,595		$	1,564,823
Individ. evaluated for impairment	$	6,586		$	71,077		$	10,056		$	528		$	197		$	121		$	8,562		$	3,596		$	607		$	101,330
Loans pooled for evaluation	$	120,082		$	776,137		$	318,403		$	12,825		$	3,619		$	26,560		$	117,429		$	8,281		$	10,589		$	1,393,925
Loans acquired with deteriorated credit quality	$	5,016		$	31,232		$	13,566		$	204			—		$	32		$	9,537		$	6,582		$	3,399		$	69,568

As part of the on-going monitoring of the credit quality of the Company’s loan portfolio, management tracks certain credit quality indicators including, but not limited to, trends relating to (i) the level of criticized and classified loans, (ii) net charge-offs, (iii) non-performing loans, and (iv) delinquency within the portfolio.

The Company utilizes a risk grading system to assign a risk grade to each of its loans. Loans are graded on a scale ranging from Pass to Loss. A description of the general characteristics of the risk grades is as follows:

• Pass – This grade represents loans ranging from acceptable to very little or no credit risk. These loans typically meet most if not all policy standards in regard to: loan amount as a percentage of collateral value, debt service coverage, profitability, leverage, and working capital.

• Special Mention – This grade represents “Other Assets Especially Mentioned” in accordance with regulatory guidelines and includes loans that display some potential weaknesses which, if left unaddressed, may result in deterioration of the repayment prospects for the asset or may inadequately protect the Company’s position in the future. These loans warrant more than normal supervision and attention.

• Substandard – This grade represents “Substandard” loans in accordance with regulatory guidelines. Loans within this rating typically exhibit weaknesses that are well defined to the point that repayment is jeopardized. Loss potential is, however, not necessarily evident. The underlying collateral supporting the credit appears to have sufficient value to protect the Company from loss of principal and accrued interest, or the loan has been written down to the point where this is true. There is a definite need for a well defined workout/rehabilitation program.

• Doubtful – This grade represents “Doubtful” loans in accordance with regulatory guidelines. An asset classified as Doubtful has all the weaknesses inherent in a loan classified Substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. Pending factors include proposed merger, acquisition, or liquidation procedures, capital injection, perfecting liens on additional collateral, and financing plans.

• Loss – This grade represents “Loss” loans in accordance with regulatory guidelines. A loan classified as Loss is considered uncollectible and of such little value that its continuance as a bankable asset is not warranted. This classification does not mean that the loan has absolutely no recovery or salvage value, but rather that it is not practical or desirable to defer writing off the loan, even though some recovery may be affected in the future. The portion of the loan that is graded loss should be charged off no later than the end of the quarter in which the loss is identified.

The following tables present ending loan balances by loan category and risk grade for the periods indicated:

	Credit Quality Indicators – As of December 31, 2014
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines		Loans						C&I		Resid.		Comm.		Total
Originated loans:
Pass	$	146,949	$	883,102	$	292,244	$	20,976	$	66	$	27,396	$	124,707	$	18,112	$	24,436	$	1,537,988
Special mention		1,122		11,521		3,590		743		11		591		636		622		—		18,836
Substandard		6,523		34,174		9,332		1,840		35		243		1,268		2,401		109		55,925
Loss		—		—		—		—		—		—		—		—		—		—
Total originated	$	154,594	$	928,797	$	305,166	$	23,559	$	112	$	28,230	$	126,611	$	21,135	$	24,545	$	1,612,749
PNCI loans:
Pass	$	119,643	$	359,537	$	36,531	$	6,813		—	$	4,399	$	40,628	$	16,808	$	11,973	$	596,332
Special mention		547		12,979		936		147		—		230		268		—		—		15,107
Substandard		631		3,709		930		25		—		141		3		—		—		5,439
Loss		—		—		—		—		—		—		—		—		—		—
Total PNCI	$	120,821	$	376,225	$	38,397	$	6,985		—	$	4,770	$	40,899	$	16,808	$	11,973	$	616,878
PCI loans	$	4,005	$	30,917	$	9,021	$	770		—	$	74	$	7,435	$	675		—	$	52,897
Total loans	$	279,420	$	1,335,939	$	352,584	$	31,314	$	112	$	33,074	$	174,945	$	38,618	$	36,518	$	2,282,524
			Credit Quality Indicators – As of December 31, 2013
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines		Loans						C&I		Resid.		Comm.		Total
Originated loans:
Pass	$	121,969	$	768,596	$	203,232	$	12,284	$	717	$	24,653	$	121,580	$	25,836	$	16,571	$	1,394,438
Special mention		1,265		15,862		4,529		504		118		756		938		96		343		24,411
Substandard		6,648		40,454		9,446		1,061		111		196		2,122		4,435		211		64,684
Loss		—		—		—		—		—		3		10		—		—		13
Total originated	$	129,882	$	824,912	$	316,207	$	13,849	$	946	$	25,608	$	124,650	$	30,367	$	17,125	$	1,483,546
PNCI loans:
Pass	$	59,798	$	48,548	$	12,716	$	253		—	$	2,020	$	380		—		—	$	123,715
Special mention		—		5,810		195		—		—		18		313		—		—		6,336
Substandard		677		3,320		665		—		—		36		—		—		—		4,698
Loss		—		—		—		—		—		—		—		—		—		—
Total PNCI	$	60,475	$	57,678	$	13,576	$	253		—	$	2,074	$	693		—		—	$	134,749
PCI loans	$	4,656	$	30,260	$	10,083	$	486		—	$	81	$	6,535	$	1,566	$	45	$	53,712
Total loans	$	195,013	$	912,850	$	339,866	$	14,588	$	946	$	27,763	$	131,878	$	31,933	$	17,170	$	1,672,007

Consumer loans, whether unsecured or secured by real estate, automobiles, or other personal property, are susceptible to three primary risks; non-payment due to income loss, over-extension of credit and, when the borrower is unable to pay, shortfall in collateral value. Typically non-payment is due to loss of job and will follow general economic trends in the marketplace driven primarily by rises in the unemployment rate. Loss of collateral value can be due to market demand shifts, damage to collateral itself or a combination of the two.

Problem consumer loans are generally identified by payment history of the borrower (delinquency). The Bank manages its consumer loan portfolios by monitoring delinquency and contacting borrowers to encourage repayment, suggest modifications if appropriate, and, when continued scheduled payments become unrealistic, initiate repossession or foreclosure through appropriate channels. Collateral values may be determined by appraisals obtained through Bank approved, licensed appraisers, qualified independent third parties, public value information (blue book values for autos), sales invoices, or other appropriate means. Appropriate valuations are obtained at initiation of the credit and periodically (every 3-12 months depending on collateral type) once repayment is questionable and the loan has been classified.

Commercial real estate loans generally fall into two categories, owner-occupied and non-owner occupied. Loans secured by owner occupied real estate are primarily susceptible to changes in the business conditions of the related business. This may be driven by, among other things, industry changes, geographic business changes, changes in the individual fortunes of the business owner, and general economic conditions and changes in business cycles. These same risks apply to commercial loans whether secured by equipment or other personal property or unsecured. Losses on loans secured by owner occupied real estate, equipment, or other personal property generally are dictated by the value of underlying collateral at the time of default and liquidation of the collateral. When default is driven by issues related specifically to the business owner, collateral values tend to provide better repayment support and may result in little or no loss. Alternatively, when default is driven by more general economic conditions, underlying collateral generally has devalued more and results in larger losses due to default. Loans secured by non-owner occupied real estate are primarily susceptible to risks associated with swings in occupancy or vacancy and related shifts in lease rates, rental rates or room rates. Most often these shifts are a result of changes in general economic or market conditions or overbuilding and resultant over-supply. Losses are dependent on value of underlying collateral at the time of default. Values are generally driven by these same factors and influenced by interest rates and required rates of return as well as changes in occupancy costs.

Construction loans, whether owner occupied or non-owner occupied commercial real estate loans or residential development loans, are not only susceptible to the related risks described above but the added risks of construction itself including cost over-runs, mismanagement of the project, or lack of demand or market changes experienced at time of completion. Again, losses are primarily related to underlying collateral value and changes therein as described above.

Problem C&I loans are generally identified by periodic review of financial information which may include financial statements, tax returns, rent rolls and payment history of the borrower (delinquency). Based on this information the Bank may decide to take any of several courses of action including demand for repayment, additional collateral or guarantors, and, when repayment becomes unlikely through borrower’s income and cash flow, repossession or foreclosure of the underlying collateral.

Collateral values may be determined by appraisals obtained through Bank approved, licensed appraisers, qualified independent third parties, public value information (blue book values for autos), sales invoices, or other appropriate means. Appropriate valuations are obtained at initiation of the credit and periodically (every 3-12 months depending on collateral type) once repayment is questionable and the loan has been classified.

Once a loan becomes delinquent and repayment becomes questionable, a Bank collection officer will address collateral shortfalls with the borrower and attempt to obtain additional collateral. If this is not forthcoming and payment in full is unlikely, the Bank will estimate its probable loss, using a recent valuation as appropriate to the underlying collateral less estimated costs of sale, and charge the loan down to the estimated net realizable amount. Depending on the length of time until ultimate collection, the Bank may revalue the underlying collateral and take additional charge-offs as warranted. Revaluations may occur as often as every 3-12 months depending on the underlying collateral and volatility of values. Final charge-offs or recoveries are taken when collateral is liquidated and actual loss is known. Unpaid balances on loans after or during collection and liquidation may also be pursued through lawsuit and attachment of wages or judgment liens on borrower’s other assets.

The following table shows the ending balance of current, past due, and nonaccrual originated loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual Originated Loans – As of December 31, 2014
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines		Loans						C&I		Resid.		Comm.		Total
Originated loan balance:
Past due:
30-59 Days	$	1,296	$	735	$	2,066	$	615	$	4	$	64	$	739		—		—	$	5,519
60-89 Days		919		—		296		192		—		24		99		—		—		1,530
> 90 Days		100		900		754		202		17		46		61		—		—		2,080
Total past due	$	2,315	$	1,635	$	3,116	$	1,009	$	21	$	134	$	899		—		—	$	9,129
Current		152,279		927,162		302,050		22,550		91		28,096		125,712		21,135		24,545		1,603,620
Total orig. loans	$	154,594	$	928,797	$	305,166	$	23,559	$	112	$	28,230	$	126,611	$	21,135	$	24,545	$	1,612,749
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	3,430	$	20,736	$	4,336	$	1,197	$	18	$	66	$	246	$	2,401	$	99	$	32,529

The following table shows the ending balance of current, past due, and nonaccrual PNCI loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual PNCI Loans – As of December 31, 2014
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.		C&I		Construction
(in thousands)	Resid.		Comm.		Lines		Loans								Resid.		Comm.		Total
PNCI loan balance:
Past due:
30-59 Days	$	2,041	$	260	$	275		—		—	$	25	$	67		—		—	$	2,668
60-89 Days		24		—		118		—		—		3		—		—		—		145
> 90 Days		239		—		73		25		—		76		—		—		—		413
Total past due	$	2,304	$	260	$	466	$	25		—	$	104	$	67		—		—	$	3,226
Current		118,517		375,965		37,931		6,960		—		4,666		40,832		16,808		11,973	$	613,652
Total PNCI loans	$	120,821	$	376,225	$	38,397	$	6,985		—	$	4,770	$	40,899	$	16,808	$	11,973	$	616,878
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	799	$	366	$	346	$	25		—	$	110		—		—		—	$	1,646

The following table shows the ending balance of current, past due, and nonaccrual originated loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual Originated Loans – As of December 31, 2013
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.		C&I		Construction
(in thousands)	Resid.		Comm.		Lines		Loans								Resid.		Comm.		Total
Originated loan balance:
Past due:
30-59 Days	$	2,272	$	2,304	$	3,121	$	264	$	24	$	40	$	296		—		—	$	8,321
60-89 Days		284		—		1,070		16		1		16		76		—	$	198		1,661
> 90 Days		447		2,213		1,050		312		33		7		749		13		—		4,824
Total past due	$	3,003	$	4,517	$	5,241	$	592	$	58	$	63	$	1,121	$	13	$	198	$	14,806
Current		126,879		820,395		310,966		13,257		888		25,545		123,529		30,354		16,927		1,468,740
Total orig. loans	$	129,882	$	824,912	$	316,207	$	13,849	$	946		25,608	$	124,650	$	30,367	$	17,125	$	1,483,546
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	4,697	$	30,732	$	4,972	$	719	$	54	$	26	$	1,280	$	2,473	$	178	$	45,131

The following table shows the ending balance of current, past due, and nonaccrual PNCI loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual PNCI Loans – As of December 31, 2013
	RE Mortgage				Home Equity				Auto Indirect		Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans				Consum.		C&I		Resid.		Comm.		Total
PNCI loan balance:
Past due:
30-59 Days	$	799	$	512	$	313		—		—	$	49		—		—		—	$	1,673
60-89 Days		—		352		38		—		—		—		—		—		—		390
> 90 Days		—		217		—		—		—		—		—		—		—		217
Total past due	$	799	$	1,081	$	351		—		—	$	49		—		—		—	$	2,280
Current		59,676		56,597		13,225	$	253		—		2,025	$	693		—		—		132,469
Total PNCI loans	$	60,475	$	57,678	$	13,576	$	253		—	$	2,074	$	693		—		—	$	134,749
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	262	$	1,139	$	429		—		—	$	36		—		—		—	$	1,866

Impaired originated loans are those where management has concluded that it is probable that the borrower will be unable to pay all amounts due under the contractual terms. The following tables show the recorded investment (financial statement balance), unpaid principal balance, average recorded investment, and interest income recognized for impaired Originated and PNCI loans, segregated by those with no related allowance recorded and those with an allowance recorded for the periods indicated.

	Impaired Originated Loans – As of December 31, 2014
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines		Loans						C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	3,287	$	38,477	$	3,001	$	750	$	14	$	25	$	412	$	2,401	$	99	$	48,466
Unpaid principal	$	5,138	$	41,949	$	6,094	$	1,187	$	49	$	32	$	433	$	6,588	$	190	$	61,660
Average recorded Investment	$	3,826	$	45,915	$	3,355	$	651	$	35	$	21	$	1,030	$	2,437	$	84	$	57,354
Interest income Recognized	$	38	$	995	$	26	$	6		—	$	1	$	26		—	$	3	$	1,095
With an allowance recorded:
Recorded investment	$	2,724	$	2,943	$	3,185	$	504	$	4	$	41	$	1,338	$	282		—	$	11,021
Unpaid principal	$	2,865	$	3,101	$	3,533	$	597	$	6	$	41	$	1,438	$	282		—	$	11,863
Related allowance	$	797	$	302	$	1,769	$	284		—	$	11	$	423	$	60		—	$	3,646
Average recorded Investment	$	2,677	$	4,119	$	2,982	$	365	$	4	$	25	$	1,428	$	283	$	55	$	11,938
Interest income Recognized	$	91	$	144	$	71	$	13		—		—	$	71	$	19		—	$	409

	Impaired PNCI Loans – As of December 31, 2014
	RE Mortgage				Home Equity					Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines			Loans						C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	343	$	366	$	346		$	25		—	$	37	$	7		—		—	$	1,124
Unpaid principal	$	353	$	2,620	$	374		$	25		—	$	54	$	7		—		—	$	3,433
Average recorded Investment	$	246	$	753	$	287		$	12		—	$	36	$	10		—		—	$	1,344
Interest income Recognized	$	14		—	$	(1	)		—		—		—	$	1		—		—	$	14
With an allowance recorded:
Recorded investment	$	834	$	146	$	436			—		—	$	220		—		—		—	$	1,636
Unpaid principal	$	852	$	146	$	436			—		—	$	220		—		—		—	$	1,654
Related allowance	$	177	$	108	$	205			—		—	$	131		—		—		—	$	621
Average recorded Investment	$	516	$	148	$	319			—		—	$	124		—		—		—	$	1,107
Interest income Recognized	$	8	$	8	$	20			—		—	$	12		—		—		—	$	48
	Impaired Originated Loans – As of December 31, 2013
	RE Mortgage				Home Equity					Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines			Loans						C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	4,366	$	53,352	$	3,710		$	552	$	55	$	16	$	1,648	$	2,473	$	69	$	66,241
Unpaid principal	$	6,489	$	58,894	$	7,299		$	1,249	$	123	$	21	$	1,665	$	6,611	$	138	$	82,489
Average recorded Investment	$	4,123	$	58,205	$	4,410		$	463	$	93	$	18	$	2,154	$	1,567	$	83	$	71,116
Interest income Recognized	$	336	$	3,361	$	352		$	36	$	12	$	1	$	113	$	108	$	7	$	4,326
With an allowance recorded:
Recorded investment	$	2,630	$	5,296	$	2,779		$	226	$	4	$	10	$	1,517	$	284	$	109	$	12,855
Unpaid principal	$	2,689	$	5,659	$	3,053		$	291	$	6	$	10	$	1,616	$	284	$	288	$	13,896
Related allowance Average recorded	$	648	$	1,084	$	968		$	169	$	1	$	5	$	585	$	91	$	7	$	3,558
Investment	$	2,245	$	6,077	$	3,064		$	141	$	12	$	7	$	1,817	$	1,499	$	188	$	15,050
Interest income Recognized	$	124	$	287	$	146		$	18	$	1	$	2	$	95	$	19	$	15	$	707
	Impaired PNCI Loans – As of December 31, 2013
	RE Mortgage				Home Equity					Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines			Loans						C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	148	$	1,139	$	227			—		—	$	36	$	12		—		—	$	1,562
Unpaid principal	$	158	$	3,323	$	287			—		—	$	45	$	12		—		—	$	3,825
Average recorded Investment	$	37	$	1,005	$	333			—		—	$	39	$	7		—		—	$	1,421
Interest income Recognized	$	11	$	233	$	21			—		—	$	5	$	1		—		—	$	271
With an allowance recorded:
Recorded investment	$	198	$	149	$	203			—		—	$	28		—		—		—	$	578
Unpaid principal	$	207	$	149	$	215			—		—	$	28		—		—		—	$	599
Related allowance	$	128	$	114	$	172			—		—	$	3		—		—		—	$	417
Average recorded Investment	$	275	$	250	$	162			—		—	$	29		—		—		—	$	716
Interest income Recognized	$	12	$	9	$	10			—		—	$	1		—		—		—	$	32

	Impaired Originated Loans – As of December 31, 2012
	RE Mortgage				Home Equity				Auto Indirect		Other		C&I		Construction
(in thousands)	Resid.		Comm.		Lines		Loans				Consum.				Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	3,520	$	66,031	$	4,241	$	361	$	163	$	19	$	4,238	$	3,554	$	284	$	82,411
Unpaid principal	$	5,349	$	70,709	$	6,691	$	781	$	311	$	40	$	4,613	$	8,227	$	484	$	97,205
Average recorded Investment	$	6,329	$	61,299	$	4,311	$	329	$	263	$	42	$	7,500	$	3,505	$	517	$	84,095
Interest income Recognized	$	71	$	2,513	$	58	$	1	$	3		—	$	73	$	20	$	10	$	2,749
With an allowance recorded:
Recorded investment	$	2,867	$	3,258	$	5,412	$	167	$	34	$	30	$	4,324	$	42	$	323	$	16,457
Unpaid principal	$	3,432	$	3,556	$	7,103	$	396	$	51	$	32	$	4,992	$	42	$	523	$	20,127
Related allowance	$	603	$	352	$	2,237	$	81	$	5	$	12	$	840	$	11	$	111	$	4,252
Average recorded Investment	$	3,890	$	7,841	$	6,331	$	317	$	102	$	49	$	2,800	$	1,543	$	6,570	$	29,443
Interest income Recognized	$	67	$	129	$	103	$	16	$	1	$	1	$	100	$	6	$	5	$	428
	Impaired PNCI Loans – As of December 31, 2012
	RE Mortgage				Home Equity				Auto Indirect		Other Consum.				Construction
(in thousands)	Resid.		Comm.		Lines		Loans						C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment		—	$	1,468	$	365		—		—		—		—		—		—	$	1,833
Unpaid principal		—	$	3,452	$	586		—		—		—		—		—		—	$	4,038
Average recorded Investment	$	16	$	2,097	$	308	$	11		—	$	31	$	11		—		—	$	2,474
Interest income Recognized		—	$	133	$	5		—		—		—		—		—		—	$	138
With an allowance recorded:
Recorded investment	$	199	$	320	$	38		—		—	$	72		—		—		—	$	629
Unpaid principal	$	225	$	331	$	41		—		—	$	76		—		—		—	$	673
Related allowance	$	28	$	163	$	27		—		—	$	35		—		—		—	$	253
Average recorded Investment	$	213	$	121	$	148		—		—	$	43		—		—		—	$	525
Interest income Recognized	$	9	$	12	$	1		—		—	$	2		—		—		—	$	24

At December 31, 2014, $45,676,000 of Originated loans were TDRs and classified as impaired. The Company had obligations to lend $54,000 of additional funds on these TDRs as of December 31, 2014. At December 31, 2014, $1,307,000 of PNCI loans were TDRs and classified as impaired. The Company had no obligations to lend additional funds on these TDRs as of December 31, 2014.

At December 31, 2013, $56,739,000 of Originated loans were TDRs and classified as impaired. The Company had obligations to lend $25,000 of additional funds on these TDRs as of December 31, 2013. At December 31, 2013, $901,000 of PNCI loans were TDRs and classified as impaired. The Company had no obligations to lend additional funds on these TDRs as of December 31, 2013.

At December 31, 2012, $57,223,000 of Originated loans were TDRs and classified as impaired. The Company had obligations to lend $137,000 of additional funds on these TDRs as of December 31, 2012. At December 31, 2012, $950,000 of PNCI loans were TDRs and classified as impaired. The Company had no obligations to lend additional funds on these TDRs as of December 31, 2012.

The following tables show certain information regarding Troubled Debt Restructurings (TDRs) that occurred during the periods indicated:

	TDR Information for the Year Ended December 31, 2014
	RE Mortgage				Home Equity					Auto Indirect		Other Consum.		C&I			Construction
(dollars in thousands)	Resid.		Comm.		Lines		Loans										Resid.		Comm.		Total
Number		5		7		6		2			—		1		7			1		2		31
Pre-mod outstanding principal balance	$	1,048	$	1,980	$	940	$	100			—	$	147	$	218		$	102	$	219	$	4,754
Post-mod outstanding principal balance	$	1,050	$	1,890	$	967	$	102			—	$	147	$	219		$	85	$	196	$	4,656
Financial impact due to TDR taken as additional provision	$	91	$	22		—	$	(1	)		—	$	66	$	101			—		—	$	279
Number that defaulted during the period		2		2		1		—			—		—		1			—		—		6
Recorded investment of TDRs that defaulted during the period	$	344	$	423	$	20		—			—		—	$	116			—		—	$	903
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions		—		—		—		—			—		—	$	(8	)		—		—	$	(8	)

	TDR Information for the Year Ended December 31, 2013
	RE Mortgage					Home Equity					Auto Indirect		Other Consum.		C&I		Construction
(dollars in thousands)	Resid.			Comm.		Lines		Loans									Resid.		Comm.		Total
Number		9			11		12		2			—		—		8		—		—		42
Pre-mod outstanding principal balance	$	2,173		$	13,145	$	1,546	$	251			—		—	$	274		—		—	$	17,389
Post-mod outstanding principal balance	$	2,177		$	13,146	$	1,557	$	253			—		—	$	275		—		—	$	17,408
Financial impact due to TDR taken as additional provision	$	148		$	27	$	340	$	(1	)		—		—	$	88		—		—	$	602
Number that defaulted during the period		4			8		3		1			—		—		4		1		—		21
Recorded investment of TDRs that defaulted during the period	$	443		$	1,702	$	150	$	15			—		—	$	1,363	$	73		—	$	3,746
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions	$	(3	)	$	7		—		—			—		—	$	3	$	5		—	$	12

Modifications classified as Troubled Debt Restructurings can include one or a combination of the following: rate modifications, term extensions, interest only modifications, either temporary or long-term, payment modifications, and collateral substitutions/additions.

For all new Troubled Debt Restructurings, an impairment analysis is conducted. If the loan is determined to be collateral dependent, any additional amount of impairment will be calculated based on the difference between estimated collectible value and the current carrying balance of the loan. This difference could result in an increased provision and is typically charged off. If the asset is determined not to be collateral dependent, the impairment is measured on the net present value difference between the expected cash flows of the restructured loan and the cash flows which would have been received under the original terms. The effect of this could result in a requirement for additional provision to the reserve. The effect of these required provisions for the period are indicated above.

Typically if a TDR defaults during the period, the loan is then considered collateral dependent and, if it was not already considered collateral dependent, an appropriate provision will be reserved or charge will be taken. The additional provisions required resulting from default of previously modified TDR’s are noted above.

XML

Foreclosed Assets

12 Months Ended

Dec. 31, 2014

Text Block [Abstract]

Foreclosed Assets

Note 6 – Foreclosed Assets

A summary of the activity in the balance of foreclosed assets follows (dollars in thousands):

	Year ended December 31, 2014									Year ended December 31, 2013
	Noncovered			Covered			Total			Noncovered			Covered			Total
Beginning balance, net	$	5,588		$	674		$	6,262		$	5,957		$	1,541		$	7,498
Acquisitions		695			—			695			—			—			—
Additions/transfers from loans		5,753			—			5,753			11,224			493			11,717
Dispositions/sales		(7,391	)		(217	)		(7,608	)		(10,992	)		(1,279	)		(12,271	)
Valuation adjustments		(196	)		(12	)		(208	)		(601	)		(81	)		(682	)
Ending balance, net	$	4,449		$	445		$	4,894		$	5,588		$	674		$	6,262
Ending valuation allowance	$	(208	)		—		$	(208	)	$	(414	)		—		$	(414	)
Ending number of foreclosed assets		28			1			29			28			4			32
Proceeds from sale of foreclosed assets	$	9,517		$	245		$	9,762		$	12,483		$	1,427		$	13,910
Gain on sale of foreclosed assets	$	2,125		$	28		$	2,153		$	1,492		$	148		$	1,640

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Related Party Transactions - Summary of Loan Activity (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Related Party Transaction, Due from (to) Related Party, Noncurrent [Abstract]
Beginning balance	$ 2,636	$ 2,368
Advances/new loans	2,106	1,154
Removed/payments	(1,610)	(886)
Ending balance	$ 3,132	$ 2,636

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Cash Value of Life Insurance

12 Months Ended

Dec. 31, 2014

Investments, All Other Investments [Abstract]

Cash Value of Life Insurance

Note 8 – Cash Value of Life Insurance

A summary of the activity in the balance of cash value of life insurance follows (dollars in thousands):

	Year ended December 31,
	2014		2013
Beginning balance	$	52,309	$	50,582
Acquisitions		38,075		—
Increase in cash value of life insurance		1,953		1,727
Ending balance	$	92,337	$	52,309
End of period death benefit	$	165,966	$	95,513
Number of policies owned		189		133
Insurance companies used		14		6
Current and former employees and directors covered		60		36

As of December 31, 2014, the Bank was the owner and beneficiary of 189 life insurance policies, issued by 14 life insurance companies, covering 60 current and former employees and directors. These life insurance policies are recorded on the Company’s financial statements at their reported cash (surrender) values. As a result of current tax law and the nature of these policies, the Bank records any increase in cash value of these policies as nontaxable noninterest income. If the Bank decided to surrender any of the policies prior to the death of the insured, such surrender may result in a tax expense related to the life-to-date cumulative increase in cash value of the policy. If the Bank retains such policies until the death of the insured, the Bank would receive nontaxable proceeds from the insurance company equal to the death benefit of the policies. The Bank has entered into Joint Beneficiary Agreements (JBAs) with certain of the insured that for certain of the policies provide some level of sharing of the death benefit, less the cash surrender value, among the Bank and the beneficiaries of the insured upon the receipt of death benefits. See Note 15 of these consolidated financial statements for additional information on JBAs.

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Fair Value Measurement (Tables)

12 Months Ended

Dec. 31, 2014

Fair Value Disclosures [Abstract]

Recorded Amount of Assets and Liabilities Measured at Fair Value on Recurring Basis

The table below presents the recorded amount of assets and liabilities measured at fair value on a recurring basis (in thousands):

Fair value at December 31, 2014	Total		Level 1		Level 2		Level 3
Securities available-for-sale:
Obligations of U.S. government corporations and agencies	$	75,120		—	$	75,120		—
Obligations of states and political subdivisions		3,175		—		3,175		—
Corporate debt securities		1,908		—		1,908		—
Marketable equity securities		3,002	$	3,002		—		—
Mortgage servicing rights		7,378		—		—	$	7,378
Total assets measured at fair value	$	90,583	$	3,002	$	80,203	$	7,378

Fair value at December 31, 2013	Total		Level 1		Level 2		Level 3
Securities available-for-sale:
Obligations of U.S. government corporations and agencies	$	97,143		—	$	97,143		—
Obligations of states and political subdivisions		5,589		—		5,589		—
Corporate debt securities		1,915		—		1,915		—
Mortgage servicing rights		6,165		—		—		6,165
Total assets measured at fair value	$	110,812		—	$	104,647	$	6,165

Reconciliation of Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3) on Recurring Basis

The following table provides a reconciliation of assets and liabilities measured at fair value using significant unobservable inputs (Level 3) on a recurring basis during the years ended December 31, 2014 and 2013. Had there been any transfer into or out of Level 3 during 2014 or 2013, the amount included in the “Transfers into (out of) Level 3” column would represent the beginning balance of an item in the period (interim quarter) during which it was transferred (in thousands):

Year ended December 31,	Beginning Balance		Transfers into (out of) Level 3		Change Included in Earnings			Issuances		Ending Balance
2014: Mortgage servicing rights	$	6,165	$	1,944	$	(1,301	)	$	570	$	7,378
2013: Mortgage servicing rights	$	4,552		—	$	253		$	1,360	$	6,165

Quantitative Information about Recurring Level 3 Fair Value Measurements

The following table presents quantitative information about recurring Level 3 fair value measurements at December 31, 2014:

	Fair Value (in thousands)		Valuation Technique		Unobservable Inputs		Range, Weighted Average
Mortgage Servicing Rights	$	7,378		Discounted cash flow		Constant prepayment rate	5.7%-23.4%, 12.0%
						Discount rate	10.0%-12.0%, 10.0%

Assets and Liabilities Measured at Fair Value on Nonrecurring Basis

The tables below present the recorded amount of assets and liabilities measured at fair value on a nonrecurring basis, as of the dates indicated, that had a write-down or an additional allowance provided during the periods indicated (in thousands):

Year ended December 31, 2014	Total		Level 1		Level 2		Level 3		Total Gains (Losses)
Fair value:
Impaired Originated & PNCI loans	$	2,480		—		—	$	2,480	$	(636	)
Foreclosed assets		2,611		—		—		2,611	$	(137	)
Total assets measured at fair value	$	5,091		—		—	$	5,091	$	(773	)
Year ended December 31, 2013	Total		Level 1		Level 2		Level 3		Total Gains (Losses)
Fair value:
Impaired Originated & PNCI loans	$	20,334		—		—	$	20,334	$	(2,539	)
Foreclosed assets		948		—		—		948		(397	)
Total assets measured at fair value	$	21,282		—		—	$	21,282	$	(2,936	)

Quantitative Information about Level 3 Fair Value Measurements for Financial Instruments Measured at Fair Value on Nonrecurring Basis

The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at December 31, 2014:

	Fair Value (in thousands)		Valuation Technique	Unobservable Inputs	Range, Weighted Average
Impaired Originated & PNCI loans	$	2,480	Sales comparison approach	Adjustment for differences between comparable sales	(5.0)%-(42.5)%, (10.1)%
			Income approach	Capitalization rate	9.09%-9.09 %, 9.09%
Foreclosed assets	$	2,611	Sales comparison approach	Adjustment for differences between comparable sales	(5.0)%-(29.4)%, (8.2)%

Estimated Fair Values of Financial Instruments that are Reported at Amortized Cost in Consolidated Balance Sheets

The estimated fair values of financial instruments that are reported at amortized cost in the Corporation’s consolidated balance sheets, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value, were as follows (in thousands):

	December 31, 2014						December 31, 2013
	Carrying Amount			Fair Value			Carrying Amount		Fair Value
Financial assets:
Level 1 inputs:
Cash and due from banks	$	93,150		$	93,150		$	76,915	$	76,915
Cash at Federal Reserve and other banks		517,578			517,578			521,453		521,453
Level 2 inputs:
Securities held to maturity		676,426			688,779			240,504		233,807
Restricted equity securities		16,956			N/A			9,163		N/A
Loans held for sale		3,579			3,579			2,270		2,270
Level 3 inputs:
Loans, net		2,282,524			2,379,155			1,672,007		1,760,274
Indemnification (liability) asset		(349	)		(349	)		206		206
Financial liabilities:
Level 2 inputs:
Deposits		3,380,423			3,380,486			2,410,483		2,411,402
Other borrowings		9,276			9,276			6,335		6,335
Level 3 inputs:
Junior subordinated debt		56,272			45,053			41,238		25,774
	Contract Amount			Fair Value			Contract Amount		Fair Value
Off-balance sheet:
Level 3 inputs:
Commitments	$	656,175		$	6,562		$	555,386	$	5,554
Standby letters of credit		17,531			175			2,601		26
Overdraft privilege commitments		101,060			1,011			68,932		689

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Noninterest Income and Expense - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Mortgage loan servicing fees, net of change in fair value of mortgage loan servicing rights	$ 568,000	$ 2,027,000	$ (350,000)

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Allowance for Loan Losses - Impaired Loans (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	$ 48,466	$ 66,241	$ 82,411
Unpaid principal, With no related allowance recorded	61,660	82,489	97,205
Average recorded Investment, With no related allowance recorded	57,354	71,116	84,095
Interest income Recognized, With no related allowance recorded	1,095	4,326	2,749
Recorded investment, With an allowance recorded	11,021	12,855	16,457
Unpaid principal, With an allowance recorded	11,863	13,896	20,127
Related allowance, With an allowance recorded	3,646	3,558	4,252
Average recorded Investment, With an allowance recorded	11,938	15,050	29,443
Interest income Recognized, With an allowance recorded	409	707	428
PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	1,124	1,562	1,833
Unpaid principal, With no related allowance recorded	3,433	3,825	4,038
Average recorded Investment, With no related allowance recorded	1,344	1,421	2,474
Interest income Recognized, With no related allowance recorded	14	271	138
Recorded investment, With an allowance recorded	1,636	578	629
Unpaid principal, With an allowance recorded	1,654	599	673
Related allowance, With an allowance recorded	621	417	253
Average recorded Investment, With an allowance recorded	1,107	716	525
Interest income Recognized, With an allowance recorded	48	32	24
RE Mortgage [Member] | Residential [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	3,287	4,366	3,520
Unpaid principal, With no related allowance recorded	5,138	6,489	5,349
Average recorded Investment, With no related allowance recorded	3,826	4,123	6,329
Interest income Recognized, With no related allowance recorded	38	336	71
Recorded investment, With an allowance recorded	2,724	2,630	2,867
Unpaid principal, With an allowance recorded	2,865	2,689	3,432
Related allowance, With an allowance recorded	797	648	603
Average recorded Investment, With an allowance recorded	2,677	2,245	3,890
Interest income Recognized, With an allowance recorded	91	124	67
RE Mortgage [Member] | Residential [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	343	148
Unpaid principal, With no related allowance recorded	353	158
Average recorded Investment, With no related allowance recorded	246	37	16
Interest income Recognized, With no related allowance recorded	14	11
Recorded investment, With an allowance recorded	834	198	199
Unpaid principal, With an allowance recorded	852	207	225
Related allowance, With an allowance recorded	177	128	28
Average recorded Investment, With an allowance recorded	516	275	213
Interest income Recognized, With an allowance recorded	8	12	9
RE Mortgage [Member] | Commercial [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	38,477	53,352	66,031
Unpaid principal, With no related allowance recorded	41,949	58,894	70,709
Average recorded Investment, With no related allowance recorded	45,915	58,205	61,299
Interest income Recognized, With no related allowance recorded	995	3,361	2,513
Recorded investment, With an allowance recorded	2,943	5,296	3,258
Unpaid principal, With an allowance recorded	3,101	5,659	3,556
Related allowance, With an allowance recorded	302	1,084	352
Average recorded Investment, With an allowance recorded	4,119	6,077	7,841
Interest income Recognized, With an allowance recorded	144	287	129
RE Mortgage [Member] | Commercial [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	366	1,139	1,468
Unpaid principal, With no related allowance recorded	2,620	3,323	3,452
Average recorded Investment, With no related allowance recorded	753	1,005	2,097
Interest income Recognized, With no related allowance recorded		233	133
Recorded investment, With an allowance recorded	146	149	320
Unpaid principal, With an allowance recorded	146	149	331
Related allowance, With an allowance recorded	108	114	163
Average recorded Investment, With an allowance recorded	148	250	121
Interest income Recognized, With an allowance recorded	8	9	12
Home equity lines of credit [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	3,001	3,710	4,241
Unpaid principal, With no related allowance recorded	6,094	7,299	6,691
Average recorded Investment, With no related allowance recorded	3,355	4,410	4,311
Interest income Recognized, With no related allowance recorded	26	352	58
Recorded investment, With an allowance recorded	3,185	2,779	5,412
Unpaid principal, With an allowance recorded	3,533	3,053	7,103
Related allowance, With an allowance recorded	1,769	968	2,237
Average recorded Investment, With an allowance recorded	2,982	3,064	6,331
Interest income Recognized, With an allowance recorded	71	146	103
Home equity lines of credit [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	346	227	365
Unpaid principal, With no related allowance recorded	374	287	586
Average recorded Investment, With no related allowance recorded	287	333	308
Interest income Recognized, With no related allowance recorded	(1)	21	5
Recorded investment, With an allowance recorded	436	203	38
Unpaid principal, With an allowance recorded	436	215	41
Related allowance, With an allowance recorded	205	172	27
Average recorded Investment, With an allowance recorded	319	162	148
Interest income Recognized, With an allowance recorded	20	10	1
Home equity loans [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	750	552	361
Unpaid principal, With no related allowance recorded	1,187	1,249	781
Average recorded Investment, With no related allowance recorded	651	463	329
Interest income Recognized, With no related allowance recorded	6	36	1
Recorded investment, With an allowance recorded	504	226	167
Unpaid principal, With an allowance recorded	597	291	396
Related allowance, With an allowance recorded	284	169	81
Average recorded Investment, With an allowance recorded	365	141	317
Interest income Recognized, With an allowance recorded	13	18	16
Home equity loans [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	25
Unpaid principal, With no related allowance recorded	25
Average recorded Investment, With no related allowance recorded	12		11
Auto Indirect [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	14	55	163
Unpaid principal, With no related allowance recorded	49	123	311
Average recorded Investment, With no related allowance recorded	35	93	263
Interest income Recognized, With no related allowance recorded		12	3
Recorded investment, With an allowance recorded	4	4	34
Unpaid principal, With an allowance recorded	6	6	51
Related allowance, With an allowance recorded		1	5
Average recorded Investment, With an allowance recorded	4	12	102
Interest income Recognized, With an allowance recorded		1	1
Other Consumer [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	25	16	19
Unpaid principal, With no related allowance recorded	32	21	40
Average recorded Investment, With no related allowance recorded	21	18	42
Interest income Recognized, With no related allowance recorded	1	1
Recorded investment, With an allowance recorded	41	10	30
Unpaid principal, With an allowance recorded	41	10	32
Related allowance, With an allowance recorded	11	5	12
Average recorded Investment, With an allowance recorded	25	7	49
Interest income Recognized, With an allowance recorded		2	1
Other Consumer [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	37	36
Unpaid principal, With no related allowance recorded	54	45
Average recorded Investment, With no related allowance recorded	36	39	31
Interest income Recognized, With no related allowance recorded		5
Recorded investment, With an allowance recorded	220	28	72
Unpaid principal, With an allowance recorded	220	28	76
Related allowance, With an allowance recorded	131	3	35
Average recorded Investment, With an allowance recorded	124	29	43
Interest income Recognized, With an allowance recorded	12	1	2
C&I [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	412	1,648	4,238
Unpaid principal, With no related allowance recorded	433	1,665	4,613
Average recorded Investment, With no related allowance recorded	1,030	2,154	7,500
Interest income Recognized, With no related allowance recorded	26	113	73
Recorded investment, With an allowance recorded	1,338	1,517	4,324
Unpaid principal, With an allowance recorded	1,438	1,616	4,992
Related allowance, With an allowance recorded	423	585	840
Average recorded Investment, With an allowance recorded	1,428	1,817	2,800
Interest income Recognized, With an allowance recorded	71	95	100
C&I [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	7	12
Unpaid principal, With no related allowance recorded	7	12
Average recorded Investment, With no related allowance recorded	10	7	11
Interest income Recognized, With no related allowance recorded	1	1
Construction [Member] | Residential [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	2,401	2,473	3,554
Unpaid principal, With no related allowance recorded	6,588	6,611	8,227
Average recorded Investment, With no related allowance recorded	2,437	1,567	3,505
Interest income Recognized, With no related allowance recorded		108	20
Recorded investment, With an allowance recorded	282	284	42
Unpaid principal, With an allowance recorded	282	284	42
Related allowance, With an allowance recorded	60	91	11
Average recorded Investment, With an allowance recorded	283	1,499	1,543
Interest income Recognized, With an allowance recorded	19	19	6
Construction [Member] | Commercial [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, With no related allowance recorded	99	69	284
Unpaid principal, With no related allowance recorded	190	138	484
Average recorded Investment, With no related allowance recorded	84	83	517
Interest income Recognized, With no related allowance recorded	3	7	10
Recorded investment, With an allowance recorded		109	323
Unpaid principal, With an allowance recorded		288	523
Related allowance, With an allowance recorded		7	111
Average recorded Investment, With an allowance recorded	55	188	6,570
Interest income Recognized, With an allowance recorded		$ 15	$ 5

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Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2014

Banking and Thrift [Abstract]

Actual Capital Amounts and Ratios of Bank

To be categorized as well capitalized the Bank must maintain minimum total risk-based, Tier 1 risk-based and Tier 1 leverage ratios as set forth in the table below. There are no conditions or events since that date that Management believes have changed the institution’s category. The Bank’s actual capital amounts and ratios are also presented in the table.

	Actual					Minimum Capital Requirement					Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio			Amount		Ratio			Amount		Ratio
	(dollars in thousands)
As of December 31, 2014:
Total Capital (to Risk Weighted Assets):
Consolidated	$	436,955		15.63	%	$	223,603		8.0	%		N/A		N/A
Tri Counties Bank	$	433,286		15.51	%	$	223,449		8.0	%	$	279,311		10.0	%
Tier 1 Capital (to Risk Weighted Assets):
Consolidated	$	401,971		14.38	%	$	111,801		4.0	%		N/A		N/A
Tri Counties Bank	$	398,325		14.26	%	$	111,724		4.0	%	$	167,587		6.0	%
Tier 1 Capital (to Average Assets):
Consolidated	$	401,971		10.80	%	$	148,819		4.0	%		N/A		N/A
Tri Counties Bank	$	398,325		10.71	%	$	148,734		4.0	%	$	185,918		5.0	%
As of December 31, 2013:
Total Capital (to Risk Weighted Assets):
Consolidated	$	297,429		14.77	%	$	161,064		8.0	%		N/A		N/A
Tri Counties Bank	$	295,212		14.67	%	$	160,961		8.0	%	$	201,201		10.0	%
Tier 1 Capital (to Risk Weighted Assets):
Consolidated	$	272,071		13.51	%	$	80,532		4.0	%		N/A		N/A
Tri Counties Bank	$	269,870		13.41	%	$	80,480		4.0	%	$	120,720		6.0	%
Tier 1 Capital (to Average Assets):
Consolidated	$	272,071		10.17	%	$	107,017		4.0	%		N/A		N/A
Tri Counties Bank	$	269,870		10.09	%	$	106,965		4.0	%	$	133,706		5.0	%

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Reserve for Unfunded Commitments - Summary of Activity in Reserve for Unfunded Commitments (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]
Balance at beginning of period	$ 2,415	$ 3,615	$ 2,740
Acquisitions	125
Provision for losses - Unfunded commitments	(395)	(1,200)	875
Balance at end of period	$ 2,145	$ 2,415	$ 3,615

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Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2014

Related Party Transactions [Abstract]

Summary of Loan Activity

The following table summarizes the activity in these loans for the periods indicated (in thousands):

Balance December 31, 2012	$	2,368
Advances/new loans		1,154
Removed/payments		(886	)
Balance December 31, 2013	$	2,636
Advances/new loans		2,106
Removed/payments		(1,610	)
Balance December 31, 2014	$	3,132

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Goodwill and Other Intangible Assets - Summary of Goodwill Intangible (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Ending Balance	$ 63,462
Goodwill, Additions	47,943
Goodwill, Reductions	0
Goodwill, Beginning Balance	$ 15,519

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Comprehensive Income - Components of Other Comprehensive Income and Related Tax Effects (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity [Abstract]
Unrealized holding (losses) gains on available for sale securities before reclassifications	$ (162)	$ (4,232)	$ (2,096)
Amounts reclassified out of accumulated other comprehensive income	0	0	0
Unrealized holding (losses) gains on available for sale securities after reclassifications	(162)	(4,232)	(2,096)
Tax effect	68	1,780	880
Unrealized holding (losses) gains on available for sale securities, net of tax	(94)	(2,452)	(1,216)
Change in unfunded status of the supplemental retirement plans before reclassifications	(7,253)	2,575	(445)
Amounts reclassified out of accumulated other comprehensive income:
Amortization of prior service cost	138	153	153
Amortization of actuarial losses	17	291	288
Total amounts reclassified out of accumulated other comprehensive income	155	444	441
Change in unfunded status of the supplemental retirement plans after reclassifications	(7,098)	3,019	(4)
Tax effect	2,984	(1,269)	2
Change in unfunded status of the supplemental retirement plans, net of tax	(4,114)	1,750	(2)
Change in joint beneficiary agreement liability before reclassifications	148	400	(370)
Amounts reclassified out of accumulated other comprehensive income	0	0	0
Change in joint beneficiary agreement liability after reclassifications	148	400	(370)
Tax effect	0	0	(64)
Change in joint beneficiary agreement liability, net of tax	148	400	(434)
Total other comprehensive (loss) income	$ (4,060)	$ (302)	$ (1,652)

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Related Party Transactions

12 Months Ended

Dec. 31, 2014

Related Party Transactions [Abstract]

Related Party Transactions

Note 26 – Related Party Transactions

Certain directors, officers, and companies with which they are associated were customers of, and had banking transactions with, the Company or the Bank in the ordinary course of business.

The following table summarizes the activity in these loans for the periods indicated (in thousands):

Balance December 31, 2012	$	2,368
Advances/new loans		1,154
Removed/payments		(886	)
Balance December 31, 2013	$	2,636
Advances/new loans		2,106
Removed/payments		(1,610	)
Balance December 31, 2014	$	3,132

Director Chrysler is a principal owner and CEO of Modern Building Inc. Modern Building Inc. provided construction services to the Company related to new and existing Bank facilities for aggregate payments of $1,181,000, $4,261,000, and $3,587,000 during 2014, 2013 and 2012, respectively.

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Fair Value Measurement - Assets and Liabilities Measured at Fair Value on Nonrecurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 5,091	$ 21,282
Total Losses	(773)	(2,936)
Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,480	20,334
Total Losses	(636)	(2,539)
Foreclosed assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,611	948
Total Losses	(137)	(397)
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	5,091	21,282
Level 3 [Member] | Impaired Originated & PNCI loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,480	20,334
Level 3 [Member] | Foreclosed assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 2,611	$ 948

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Deposits (Tables)

12 Months Ended

Dec. 31, 2014

Banking and Thrift [Abstract]

Summary of Balances of Deposits

A summary of the balances of deposits follows (in thousands):

	December 31,
	2014		2013
Noninterest-bearing demand	$	1,083,900	$	789,458
Interest-bearing demand		782,385		533,351
Savings		1,156,126		798,986
Time certificates, $250,000 and over		38,217		31,542
Other time certificates		319,795		257,146
Total deposits	$	3,380,423	$	2,410,483

Schedule of Maturities of Time Deposits

At December 31, 2014, the scheduled maturities of time deposits were as follows (in thousands):

	Scheduled Maturities
2015	$	282,629
2016		46,606
2017		17,017
2018		6,241
2019		5,516
Thereafter		3
Total	$	358,012

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Deposits

12 Months Ended

Dec. 31, 2014

Banking and Thrift [Abstract]

Deposits

Note 13 - Deposits

A summary of the balances of deposits follows (in thousands):

	December 31,
	2014		2013
Noninterest-bearing demand	$	1,083,900	$	789,458
Interest-bearing demand		782,385		533,351
Savings		1,156,126		798,986
Time certificates, $250,000 and over		38,217		31,542
Other time certificates		319,795		257,146
Total deposits	$	3,380,423	$	2,410,483

Certificate of deposit balances of $5,000,000 and $5,000,000 from the State of California were included in time certificates, $250,000 and over, at December 31, 2014 and 2013, respectively. The Bank participates in a deposit program offered by the State of California whereby the State may make deposits at the Bank’s request subject to collateral and credit worthiness constraints. The negotiated rates on these State deposits are generally more favorable than other wholesale funding sources available to the Bank. Overdrawn deposit balances of $1,216,000 and $1,212,000 were classified as consumer loans at December 31, 2014 and 2013, respectively.

At December 31, 2014, the scheduled maturities of time deposits were as follows (in thousands):

	Scheduled Maturities
2015	$	282,629
2016		46,606
2017		17,017
2018		6,241
2019		5,516
Thereafter		3
Total	$	358,012

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Stock Options and Other Equity-Based Incentive Instruments - Summary of Options Outstanding (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options	1,102,850
Weighted average exercise price	$ 18.25
Intrinsic value (in thousands)	$ 7,143
Weighted average remaining contractual term (yrs.)	5 years 3 months 18 days
Currently Exercisable [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options	818,350
Weighted average exercise price	$ 18.62
Intrinsic value (in thousands)	5,007
Weighted average remaining contractual term (yrs.)	4 years 6 months
Currently Not Exercisable [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options	284,500
Weighted average exercise price	$ 17.19
Intrinsic value (in thousands)	$ 2,136
Weighted average remaining contractual term (yrs.)	7 years 7 months 6 days

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 18 - Commitments and Contingencies

Restricted Cash Balances— Reserves (in the form of deposits with the San Francisco Federal Reserve Bank) of $57,616,000 and $38,359,000 were maintained to satisfy Federal regulatory requirements at December 31, 2014 and 2013. These reserves are included in cash and due from banks in the accompanying consolidated balance sheets.

Lease Commitments— The Company leases 53 sites under non-cancelable operating leases. The leases contain various provisions for increases in rental rates, based either on changes in the published Consumer Price Index or a predetermined escalation schedule. Substantially all of the leases provide the Company with the option to extend the lease term one or more times following expiration of the initial term. The Company currently does not have any capital leases.

At December 31, 2014, future minimum commitments under non-cancelable operating leases with initial or remaining terms of one year or more are as follows:

	Operating Leases
	(in thousands)
2015	$	3,419
2016		2,510
2017		1,856
2018		1,323
2019		859
Thereafter		1,180
Future minimum lease payments	$	11,147

Rent expense under operating leases was $4,786,000 in 2014, $4,300,000 in 2013, and $4,332,000 in 2012. Rent expense was offset by rent income of $225,000 in 2014, $216,000 in 2013, and $138,000 in 2012.

Financial Instruments with Off-Balance-Sheet Risk— The Company is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit, standby letters of credit, and deposit account overdraft privilege. Those instruments involve, to varying degrees, elements of risk in excess of the amount recognized in the balance sheet. The contract amounts of those instruments reflect the extent of involvement the Company has in particular classes of financial instruments.

The Company’s exposure to loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and standby letters of credit written is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. The Company’s exposure to loss in the event of nonperformance by the other party to the financial instrument for deposit account overdraft privilege is represented by the overdraft privilege amount disclosed to the deposit account holder.

The following table presents a summary of the Bank’s commitments and contingent liabilities:

(in thousands)	December 31, 2014		December 31, 2013
Financial instruments whose amounts represent risk:
Commitments to extend credit:
Commercial loans	$	177,557	$	136,986
Consumer loans		392,705		360,194
Real estate mortgage loans		36,139		35,309
Real estate construction loans		49,774		22,897
Standby letters of credit		17,531		2,601
Deposit account overdraft privilege		101,060		68,932

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates of one year or less or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s credit worthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on Management’s credit evaluation of the customer. Collateral held varies, but may include accounts receivable, inventory, property, plant and equipment, residential properties, and income-producing commercial properties.

Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support private borrowing arrangements. Most standby letters of credit are issued for one year or less. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. Collateral requirements vary, but in general follow the requirements for other loan facilities.

Deposit account overdraft privilege amount represents the unused overdraft privilege balance available to the Company’s deposit account holders who have deposit accounts covered by an overdraft privilege. The Company has established an overdraft privilege for certain of its deposit account products whereby all holders of such accounts who bring their accounts to a positive balance at least once every thirty days receive the overdraft privilege. The overdraft privilege allows depositors to overdraft their deposit account up to a predetermined level. The predetermined overdraft limit is set by the Company based on account type.

Legal Proceedings— The Bank owns 13,396 shares of Class B common stock of Visa Inc. which are convertible into Class A common stock at a conversion ratio of 0.4121 per Class A share. As of December 31, 2014, the value of the Class A shares was $262.20 per share. Utilizing the conversion ratio, the value of unredeemed Class A equivalent shares owned by the Bank was $1,447,000 as of December 31, 2014, and has not been reflected in the accompanying financial statements. The shares of Visa Class B common stock are restricted and may not be transferred. Visa Member Banks are required to fund an escrow account to cover settlements, resolution of pending litigation and related claims. If the funds in the escrow account are insufficient to settle all the covered litigation, Visa may sell additional Class A shares, use the proceeds to settle litigation, and further reduce the conversion ratio. If funds remain in the escrow account after all litigation is settled, the Class B conversion ratio will be increased to reflect that surplus.

On January 24, 2014, a putative shareholder class action lawsuit was filed against TriCo, North Valley Bancorp and certain other defendants in connection with TriCo entering into the merger agreement with North Valley Bancorp. The lawsuit, which was filed in the Shasta County, California Superior Court, alleges that the members of the North Valley Bancorp board of directors breached their fiduciary duties to North Valley Bancorp shareholders by approving the proposed merger for inadequate consideration; approving the transaction in order receive benefits not equally shared by other North Valley Bancorp shareholders; entering into the merger agreement containing preclusive deal protection devices; and failing to take steps to maximize the value to be paid to the North Valley Bancorp shareholders. The lawsuit alleges claims against TriCo for aiding and abetting these alleged breaches of fiduciary duties. The plaintiff seeks, among other things, declaratory and injunctive relief concerning the alleged breaches of fiduciary duties injunctive relief prohibiting consummation of the merger, rescission, attorneys’ of the merger agreement, fees and costs, and other and further relief. On July 31, 2014 the defendants entered into a memorandum of understanding with the plaintiffs regarding the settlement of this lawsuit. In connection with the settlement contemplated by the memorandum of understanding and in consideration for the full settlement and release of all claims, TriCo and North Valley Bancorp agreed to make certain additional disclosures related to the proposed merger, which are contained in a Current Report on Form 8-K filed by each of the companies. The memorandum of understanding contemplates that the parties will negotiate in good faith and use their reasonable best efforts to enter into a stipulation of settlement. The stipulation of settlement will be subject to customary conditions, including court approval following notice to North Valley Bancorp’s shareholders. In the event that the parties enter into a stipulation of settlement, a hearing will be scheduled at which the court will consider the settlement. There can be no assurance that the parties will ultimately enter into a stipulation of settlement or that the court will approve the settlement even if the parties were to enter into such stipulation. In such event, the proposed settlement as contemplated by the memorandum of understanding may be terminated.

On September 15, 2014, a former Personal Banker at one of the Bank’s in-store branches filed a Class Action Complaint against the Bank in Butte County Superior Court, alleging causes of action related to the observance of meal periods. Plaintiff seeks to represent a class of “current and former hourly-paid or non-exempt ‘personal bankers’, or employees with the same or similar job duties, employed by Defendants within the State of California during the preceding four years.” The Bank filed an Answer to the Complaint on November 6, 2014, denies the charges, and the Bank intends to vigorously defend the lawsuit against class certification and liability.

On January 20, 2015, a current Personal Banker at one of the Bank’s in-store branches filed a First Amended Complaint against Tri Counties Bank and TriCo Bancshares, dba Tri Counties Bank, in Sacramento County Superior Court, alleging causes of action related to wage statement violations. Plaintiff seeks to represent a class of current and former exempt and non-exempt employees who worked for the Bank “during the time period beginning October 18, 2013 through the date of the filing of this action”. The Company and the Bank have not yet responded to the First Amended Complaint, deny the charges, and intend to vigorously defend the lawsuit against class certification and liability.

Neither the Company nor its subsidiaries, are party to any other material pending legal proceeding, nor is their property the subject of any material pending legal proceeding, except routine legal proceedings arising in the ordinary course of their business. None of these proceedings is expected to have a material adverse impact upon the Company’s business, consolidated financial position or results of operations.

Other Commitments and Contingencies—The Company has entered into employment agreements or change of control agreements with certain officers of the Company providing severance payments and accelerated vesting of benefits under supplemental retirement agreements to the officers in the event of a change in control of the Company and termination for other than cause or after a substantial and material change in the officer’s title, compensation or responsibilities.

Mortgage loans sold to investors may be sold with servicing rights retained, with only the standard legal representations and warranties regarding recourse to the Bank. Management believes that any liabilities that may result from such recourse provisions are not significant.

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Goodwill and Other Intangible Assets - Estimated Core Deposit Intangible Amortization (Detail) (Core deposit intangibles [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Core deposit intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
2015	$ 1,157
2016	1,157
2017	1,109
2018	1,044
2019	948
Thereafter	$ 1,636

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Indemnification Asset (Tables)

12 Months Ended

Dec. 31, 2014

Text Block [Abstract]

Summary of Activity in Balance of Indemnification Asset (Liability)

A summary of the activity in the balance of indemnification asset (liability) included in other assets is follows (in thousands):

	Year ended December 31,
	2014			2013			2012
Beginning balance	$	206		$	1,997		$	4,405
Effect of actual covered losses (recoveries) and increase (decrease) in estimated future covered losses		(869	)		(1,419	)		(245	)
Reimbursable (revenue) expenses incurred		69			(159	)		69
Payments made (received)		245			(213	)		(2,232	)
Ending balance	$	(349	)	$	206		$	1,997

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Other Borrowings - Summary of Balances of Other Borrowings (Parenthetical) (Detail) (Other collateralized borrowings, fixed rate, as of December 31, 2014 of 0.05%, payable on January 2, 2014 [Member])	12 Months Ended
	Dec. 31, 2014
Other collateralized borrowings, fixed rate, as of December 31, 2014 of 0.05%, payable on January 2, 2014 [Member]
Debt Instrument [Line Items]
Other collateralized borrowings, fixed rate	0.05%
Other collateralized borrowings, maturity date	Jan. 02, 2014

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Investment Securities (Tables)

12 Months Ended

Dec. 31, 2014

Investments, Debt and Equity Securities [Abstract]

Amortized Cost and Estimated Fair Values of Investments in Debt and Equity Securities

The amortized cost and estimated fair values of investments in debt and equity securities are summarized in the following tables:

	December 31, 2014
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(in thousands)
Securities Available for Sale
Obligations of U.S. government corporations and agencies	$	71,144		4,001		(25	)	$	75,120
Obligations of states and political subdivisions		3,130		45		—			3,175
Corporate debt securities		1,891		17		—			1,908
Marketable equity securities		3,000		2		—			3,002
Total securities available for sale	$	79,165	$	4,065	$	(25	)	$	83,205
Securities Held to Maturity
Obligations of U.S. government corporations and agencies	$	660,836		13,055		(677	)	$	673,214
Obligations of states and political subdivisions		15,590		130		(155	)		15,565
Total securities held to maturity	$	676,426	$	13,185	$	(832	)	$	688,779

	December 31, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(in thousands)
Securities Available for Sale
Obligations of U.S. government corporations and agencies	$	93,055	$	4,445	$	(357	)	$	97,143
Obligations of states and political subdivisions		5,513		77		(1	)		5,589
Corporate debt securities		1,877		38		—			1,915
Total securities available for sale	$	100,445	$	4,560	$	(358	)	$	104,647
Securities Held to Maturity
Obligations of U.S. government corporations and agencies	$	227,864	$	298	$	(5,540	)	$	222,622
Obligations of states and political subdivisions		12,640		—		(1,455	)		11,185
Total securities held to maturity	$	240,504	$	298	$	(6,995	)	$	233,807

Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity

For purposes of the following table, the entire outstanding balance of these mortgage-backed securities issued by U.S. government corporations and agencies is categorized based on final maturity date.  

Investment Securities	Available for Sale				Held to Maturity
(In thousands)	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Due in one year	$	1,924	$	1,942		—		—
Due after one year through five years		1,095		1,135		—		—
Due after five years through ten years		30,977		32,316	$	1,118	$	1,106
Due after ten years		45,169		47,812		675,308		687,673
Totals	$	79,165	$	83,205	$	676,426	$	688,779

Gross Unrealized Losses on Investment

Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, were as follows:

	Less than 12 months					12 months or more					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
December 31, 2014	(in thousands)
Securities Available for Sale:
Obligations of U.S. government corporations and agencies	$	6,774		(25	)		—		—			6,774		(25	)
Obligations of states and political subdivisions		—		—			—		—			—		—
Corporate debt securities		—		—			—		—			—		—
Marketable equity securities		—		—			—		—			—		—
Total securities available-for-sale	$	6,774		(25	)		—		—			6,774		(25	)
Securities Held to Maturity:
Obligations of U.S. government corporations and agencies	$	335		(1	)		56,288		(676	)		56,623		(677	)
Obligations of states and political subdivisions		1,600		(26	)		1,858		(129	)		3,458		(155	)
Corporate debt securities		—		—			—		—			—		—
Total securities held-to-maturity	$	1,935		(27	)		58,146		(805	)		60,081		(832	)

	Less than 12 months					12 months or more				Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
December 31, 2013	(in thousands)
Securities Available for Sale:
Obligations of U.S. government corporations and agencies	$	10,287	$	(357	)		—		—	$	10,287	$	(357	)
Obligations of states and political subdivisions		199		(1	)		—		—		199		(1	)
Corporate debt securities		—		—			—		—		—		—
Total securities available-for-sale	$	10,486	$	(358	)		—		—	$	10,486	$	(358	)
Securities Held to Maturity:
Obligations of U.S. government corporations and agencies	$	188,218	$	(5,540	)		—		—	$	188,218	$	(5,540	)
Obligations of states and political subdivisions		11,185		(1,455	)		—		—		11,185		(1,455	)
Corporate debt securities		—		—			—		—		—		—
Total securities held-to-maturity	$	199,403	$	(6,995	)		—		—	$	199,403	$	(6,995	)

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Junior Subordinated Debt - Additional Information (Detail) (USD $)	12 Months Ended	0 Months Ended
	Dec. 31, 2014	Oct. 03, 2014	Dec. 31, 2013	Jul. 31, 2003	Jun. 22, 2004
Class of Stock [Line Items]
Common stock shares issued	22,714,964		16,076,662
Subordinated debenture, Face Value	62,889,000
Subordinated debenture, recorded fair value	56,272,000		41,238,000
North Valley Bancorp [Member]
Class of Stock [Line Items]
Acquisition, completion date	Oct. 03, 2014
North Valley Trust II [Member]
Class of Stock [Line Items]
Subordinated debenture, Face Value	6,186,000	6,186,000
Acquisition of common stock interests		186,000
Subordinated debenture, recorded fair value	5,015,000	5,006,000
North Valley Trust III [Member]
Class of Stock [Line Items]
Subordinated debenture, Face Value	5,155,000	5,155,000
Acquisition of common stock interests		155,000
Subordinated debenture, recorded fair value	3,927,000	3,918,000
North Valley Trust IV [Member]
Class of Stock [Line Items]
Subordinated debenture, Face Value	10,310,000	10,310,000
Acquisition of common stock interests		310,000
Subordinated debenture, recorded fair value	6,092,000	6,063,000
TriCo Capital Trust I [Member]
Class of Stock [Line Items]
Common stock shares issued				619
Common stock par value				$ 1,000
Issuance of common stock, aggregate value				619,000
Issued Junior Subordinated Debenture to the trust				20,619,000
Offering of cumulative trust preferred securities				20,000
Cumulative trust preferred securities for cash in an aggregate amount				20,000,000
Redeem the trust preferred securities	Oct. 07, 2033
LIBOR Rate, Description	Three-month LIBOR plus 3.05%
Preferred securities redeemable interest rate	3.05%
Company paid underwriting fees, per trust preferred security	7.50
Company paid underwriting fees aggregate	150,000
Net proceeds were used to finance the opening of new branches, services and technology	19,850,000
TriCo Capital Trust II [Member]
Class of Stock [Line Items]
Common stock shares issued					619
Common stock par value					$ 1,000
Issuance of common stock, aggregate value					619,000
Issued Junior Subordinated Debenture to the trust					20,619,000
Offering of cumulative trust preferred securities					20,000
Cumulative trust preferred securities for cash in an aggregate amount					20,000,000
Redeem the trust preferred securities	Jul. 23, 2034
LIBOR Rate, Description	Three-month LIBOR plus 2.55%
Preferred securities redeemable interest rate	2.55%
Company paid underwriting fees, per trust preferred security	2.50
Company paid underwriting fees aggregate	50,000
Net proceeds were used to finance the opening of new branches, services and technology	19,950,000

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Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net income	$ 5,650	$ 8,234	$ 4,859	$ 7,365	$ 5,236	$ 7,361	$ 6,325	$ 8,477	$ 26,108	$ 27,399	$ 18,994
Other comprehensive (loss) income, net of tax:
Unrealized holding (losses) gains on securities arising during the period									(94)	(2,452)	(1,216)
Change in minimum pension liability									(4,114)	1,750	(2)
Change in joint beneficiary agreement liability									148	400	(434)
Other comprehensive (loss) income									(4,060)	(302)	(1,652)
Comprehensive income									$ 22,048	$ 27,097	$ 17,342

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Premises and Equipment - Summary of Premises and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment, Net, by Type [Abstract]
Land & land improvements	$ 8,933	$ 5,975
Buildings	39,638	30,103
Furniture and equipment	28,446	27,881
Premises and equipment, gross	77,017	63,959
Less: Accumulated depreciation	(33,570)	(32,397)
Premises and equipment less depreciation, gross	43,447	31,562
Construction in progress	46	50
Total premises and equipment	$ 43,493	$ 31,612

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Business Combinations

12 Months Ended

Dec. 31, 2014

Business Combinations [Abstract]

Business Combinations

Note 2 - Business Combinations

On October 3, 2014, TriCo completed its acquisition of North Valley Bancorp originally announced January 21, 2014. Based on a fixed exchange ratio of 0.9433 shares of TriCo common stock for each share of North Valley Bancorp common stock, North Valley Bancorp shareholders received 6,575,550 shares of TriCo common stock and $6,823 of cash in-lieu of fractional shares. The 6,575,550 shares of TriCo common stock issued to North Valley Bancorp shareholders represented, on a pro forma basis, approximately 28.9% of the 22,714,964 shares of the combined company outstanding on October 3, 2014. Based on TriCo’s closing stock price of $23.01 on October 3, 2014, North Valley Bancorp shareholders received consideration valued at $151,310,000 or approximately $21.71 per share of North Valley common stock outstanding.

The acquisition of North Valley Bancorp was to expand the Company’s market presence in Northern California. The customer base and locations of North Valley Bancorp’s branches had significant overlap when compared to the Company’s Northern California customer base and branch locations. This made North Valley Bancorp a very good fit in terms of potential cost savings and future growth potential. With the levels of excess capital at the time, the acquisitions fit well into the Company’s growth strategy.

North Valley Bancorp, was headquartered in Redding, California, and was the parent of North Valley Bank that had approximately $935 million in assets and 22 commercial banking offices in Shasta, Humboldt, Del Norte, Mendocino, Yolo, Sonoma, Placer and Trinity Counties in Northern California at June 30, 2014. In connection with the acquisition, North Valley Bank was merged into Tri Counties Bank on October 3, 2014.

On October 25, 2014, North Valley Bank’s electronic customer service and other data processing systems were converted into Tri Counties Bank’s systems. Between January 7, 2015 and January 21, 2015, four Tri Counties Bank branches and four former North Valley Bank branches were consolidated into other Tri Counties Bank or other former North Valley Bank branches.

Beginning on October 4, 2014, the effect of revenue and expenses from the operations of North Valley Bancorp, and the issuance of TriCo Bancshares common shares as consideration in the merger are included in the results of the Company.

The assets acquired and liabilities assumed from North Valley Bancorp were accounted for in accordance with ASC 805 “Business Combinations,” using the acquisition method of accounting and were recorded at their estimated fair values on the October 3, 2014 acquisition date, and its results of operations are included in the Company’s consolidated statements of income since that date. The excess of the fair value of consideration transferred over total identifiable net assets was recorded as goodwill. The goodwill arising from the acquisition consists largely of the synergies and economies of scale expected from combining the operations of the Company and North Valley Bancorp. None of the goodwill is deductible for income tax purposes as the acquisition was accounted for as a tax-free exchange. The fair value estimate for loans is considered provisional as additional information related to the fair value of such loans as of October 3, 2014 may become available in the future. Management may adjust the fair value of loans acquired from North Valley Bancorp for a period of up to one year from the date of the acquisition. Any adjustment to the fair value of loans acquired from North Valley Bancorp would have residual effects on deferred tax assets and goodwill.

The following table discloses the calculation of the fair value of consideration transferred, the total identifiable net assets acquired and the resulting goodwill relating to the North Valley Bancorp acquisition:

(in thousands)	North Valley Bancorp October 3, 2014
Fair value of consideration transferred:
Fair value of shares issued	$	151,303
Cash consideration		7
Total fair value of consideration transferred		151,310
Asset acquired:
Cash and cash equivalents		141,412
Securities available for sale		17,297
Securities held to maturity		189,949
Restricted equity securities		5,378
Loans		499,327
Foreclosed assets		695
Premises and equipment		11,936
Cash value of life insurance		38,075
Core deposit intangible		6,614
Other assets		20,056
Total assets acquired		930,739
Liabilities assumed:
Deposits		801,956
Other liabilities		10,429
Junior subordinated debt		14,987
Total liabilities assumed		827,372
Total net assets acquired		103,367
Goodwill recognized	$	47,943

A summary of the estimated fair value adjustments resulting in the goodwill recorded in the North Valley Bancorp acquisition are presented below:

(in thousands)	North Valley Bancorp October 3, 2014
Value of stock consideration paid to North Valley Bancorp Shareholders		151,303
Cash payments to North
Valley Bancorp Shareholders		7
Cost basis net assets acquired	$	(98,040	)
Fair value adjustments:
Loans		5,832
Premises and Equipment		(4,785	)
Core deposit intangible		(6,283	)
Deferred income taxes		6,293
Junior subordinated debt		(6,664	)
Other		280
Goodwill	$	47,943

The loan portfolio of North Valley Bancorp was recorded at fair value at the date of each acquisition. A valuation of North Valley Bancorp’s loan portfolio was performed as of the acquisition date to assess the fair value of the loan portfolio. The North Valley Bancorp loan portfolio was segmented into two groups; loans with credit deterioration (PCI loans) and loans without credit deterioration (PNCI). For North Valley Bancorp PNCI loans, the present value of estimated future cash flows, based primarily on contractual cash flows, was used to determine fair value. For North Valley Bancorp PCI loans, the present value of estimated future cash flows, based primarily on liquidation value of collateral, was used to determine fair value.

North Valley Bancorp PNCI loans were grouped into pools based on similar loan characteristics such as loan type, payment amortization method, and fixed or variable interest rates. A discounted cash flow schedule was prepared for each pool in which the present value of all estimated future cash flows was calculated using a specifically calculated discount rate for each pool. The discount rate used to estimate the fair value of each loan pool was composed of the sum of: an estimated cost of funds rate, an estimated capital charge reflecting the market participant required return on capital, estimated loan servicing costs, and a liquidity premium. All PNCI loan pools included some estimate regarding prepayment rates, and estimated principal default and loss rates, based primarily on North Valley Bancorp’s historical loss experience. The difference between the sum of recorded balances of the North Valley Bancorp PNCI loans in each pool and the present value of each pool represented the total discount (if the recorded value exceeded the present value) or premium (if the present value exceeded the recorded value) for each pool. The total discount, or premium, for each pool was then allocated to the individual loans within each pool based on outstanding loan balance, individual loan risk rating as compared to the weighted average risk rating of the pool, and the contractual payments remaining for the individual loan as compared to the pool.

North Valley Bancorp PCI loans were fair valued on an individual basis. A discounted cash flow schedule was prepared for each loan in which the present value of all future estimated cash flows was calculated using a specifically calculated discount rate, estimated liquidation value and estimated liquidation timing for each loan. The discount rate used in the calculation of the present value of North Valley Bancorp PCI loans was composed of the sum of: an estimated cost of funds rate, an estimated capital charge reflecting the market participant required return on capital, estimated loan servicing costs, and a liquidity premium. The difference between the recorded balance and the present value of each North Valley Bancorp PCI loan represented the discount for each PCI loan. All North Valley Bancorp PCI loans had recorded values in excess of their present value of estimated future cash flows.

The Company identified the North Valley Bancorp PCI loans as having cash flows that were not reasonably estimable and placed these loans in nonaccrual status under ASC 310-30 and included them in the category of loans the Company refers to as “PCI – other” loans.

The following table presents the cost basis, fair value discount, and fair value of loans acquired from North Valley Bancorp on October 3, 2014:

	North Valley Bancorp Acquired Loans October 3, 2014
(in thousands)	Cost Basis		Discount			Fair Value
PNCI	$	502,637	$	(12,721	)	$	489,916
PCI – other		11,488		(2,077	)		9,411
Total	$	514,125	$	(14,798	)	$	499,327

Although the discount on PNCI loans is completely accretable to interest income over the remaining life of such loans, the discount on PCI – other loans from the North Valley Bancorp acquisition are not accretable into interest income until the loan principal balance has been reduced to the loan’s fair value recorded at acquisition. This method of accounting for the PCI – other loans from the North Valley Bancorp acquisition is often referred to as the “cost recovery” method of income recognition.

The following table presents a reconciliation of the undiscounted contractual cash flows, nonaccretable difference, accretable yield, fair value, purchase discount, and principal balance of loans for the PNCI and PCI—other categories of North Valley Bancorp loans as of the acquisition date. For North Valley Bancorp PCI – other loans, the purchase discount does not necessarily represent cash flows to be collected:

	North Valley Bancorp Loans – October 3, 2014
(in thousands)	PNCI			PCI—other			Total
Undiscounted contractual cash flows	$	718,731		$	15,706		$	734,437
Undiscounted cash flows not expected to be collected (nonaccretable difference)		—			(6,295	)		(6,295	)
Undiscounted cash flows expected to be collected		718,731			9,411			728,142
Accretable yield at acquisition		(228,815	)		—			(228,815	)
Estimated fair value of loans acquired at acquisition		489,916			9,411			499,327
Purchase discount		12,721			2,077			14,798
Principal balance loans acquired	$	502,637		$	11,488		$	514,125

As part of the acquisition of North Valley Bancorp, the Company performed a valuation of premises and equipment acquired. This valuation resulted in a $4,785,000 increase in the net book value of land and buildings acquired, and was based on current appraisals of such land and buildings.

The Company recognized a core deposit intangible of $6,614,000 related to the acquisition of North Valley Bancorp’s core deposits. The recorded core deposit intangibles represented approximately 0.97% of core deposits for North Valley Bancorp and will be amortized over their useful lives of 7 years.

A valuation of time deposits for North Valley Bancorp was also performed as of the acquisition date. Time deposits were split into similar pools based on size, type of time deposits, and maturity. A discounted cash flow analysis was performed on the pools based on current market rates currently paid on similar time deposits. The valuation resulted in no material fair value discount or premium, and none was recorded.

The fair value of junior subordinated debentures assumed from North Valley Bancorp was estimated using a discounted cash flow method based on the current market rates for similar liabilities. As a result a discount of $6,664,000 was recorded on the junior subordinated debentures acquired from North Valley Bancorp. The discount on the subordinated debentures will be amortized using the effective yield method the remaining life to maturity of the debentures at acquisition which range from 18 years to 21 years.

The Company assumed 13 lease contracts from North Valley Bancorp. The fair value measurements of theses leasehold interests were performed to determine whether the lease terms were favorable or unfavorable relative to current market rates of similar leases. The fair value of leasehold interests was recorded based on estimated future cash flow projections using market rates for similar leases. As a result, on the acquisition dates, we recorded unfavorable leasehold interests of $293,000.

The Company recorded a $6,293,000 reduction in deferred tax assets due to the tax effects of the other acquisition accounting fair value adjustments noted above, and a $1,341,000 decrease in the North Valley Bancorp deferred tax asset related to net operating loss carryforwards that the Company determined will not be realizable.

During the 2014, the Company recorded approximately $4,858,000 in one-time costs associated with the acquisition of North Valley Bancorp, including $1,269,000 that was not tax deductible. These costs included expense related to severance and other salaries and benefits expenses, consulting fees, legal fees, contract termination fees, and other expense. The system integration and conversion for North Valley Bancorp was completed during the fourth quarter of 2014. The Company consolidated four former North Valley Bank, and four Tri Counties Bank branches into other Tri Counties Bank branches or other former North Valley Bank branches during January 2015.

The table below presents the unaudited proforma information as if the acquisition of North Valley Bancorp had occurred on January 1, 2013 after giving effect to certain acquisition accounting adjustments. The proforma information for the years ended December 31, 2014 and 2013 includes acquisition adjustments for the amortization/accretion on loans, core deposit intangibles, junior subordinated debt and related income tax effects. The proforma financial information also includes one-time costs associated with the acquisitions but does not include expected costs savings synergies that we expect to achieve. The unaudited pro forma financial information is not necessarily indicative of the results of operations that would have occurred had the transaction been effected on the assumed date.

	Proforma for the
	Year Ended December 31,
	2014			2013
(Unaudited, in thousands, except per share data)
Summarized Income Statement Data:
Net interest income	$	139,520		$	132,635
Provision for (benefit from) loan losses		(4,045	)		(715	)
Noninterest income		43,587			50,966
Noninterest expense		147,295			133,073
Income before income taxes		39,857			51,243
Income taxes		16,453			20,091
Net income	$	23,404		$	31,152
Basic earnings per share	$	1.03		$	1.38
Diluted earnings per share	$	1.02		$	1.37

It is impracticable to separately provide information regarding the revenue and earnings of North Valley Bancorp included in the Company’s consolidated income statement from the October 3, 2014 acquisition date to December 31, 2014 because the operations of North Valley Bancorp were substantially comingled with the operations of the Company as of the system conversion date of October 25, 2014.

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Noninterest Income and Expense (Tables)

12 Months Ended

Dec. 31, 2014

Other Income and Expenses [Abstract]

Components of Other Noninterest Income

The components of other noninterest income were as follows (in thousands):	Years Ended December 31,
	2014			2013			2012
Service charges on deposit accounts	$	11,811		$	12,716		$	14,290
ATM and interchange fees		9,651			8,370			7,762
Other service fees		2,206			2,144			2,223
Mortgage banking service fees		1,869			1,774			1,666
Change in value of mortgage servicing rights		(1,301	)		253			(2,016	)
Total service charges and fees		24,236			25,257			23,925
Gain on sale of loans		2,032			5,602			6,810
Commissions on sale of non-deposit investment products		2,995			2,983			3,209
Increase in cash value of life insurance		1,953			1,727			1,820
Change in indemnification asset		(856	)		(1,649	)		(286	)
Gain on sale of foreclosed assets		2,153			1,640			786
Sale of customer checks		450			377			346
Lease brokerage income		504			337			276
Gain (loss) on disposal of fixed assets		49			(39	)		(420	)
Commission rebates		—			—			(56	)
Gain on life insurance death benefit		—			—			675
Other		1,000			594			895
Total other noninterest income		10,280			11,572			14,055
Total noninterest income	$	34,516		$	36,829		$	37,980

Components of Noninterest Expense

The components of noninterest expense were as follows (in thousands):

	Years Ended December 31,
	2014			2013			2012
Base salaries, net of deferred loan origination costs	$	39,342		$	34,404		$	33,093
Incentive compensation		5,068			4,694			5,138
Benefits and other compensation costs		13,134			12,838			11,721
Total salaries and benefits expense		57,544			51,936			49,952
Occupancy		8,203			7,405			7,263
Equipment		4,514			4,162			4,444
Data processing and software		6,512			4,844			4,793
Assessments		2,107			2,248			2,393
ATM network charges		2,996			2,480			2,390
Advertising		2,413			1,981			2,876
Professional fees		3,888			2,707			2,879
Telecommunications		2,870			2,449			2,250
Postage		949			786			920
Courier service		1,055			988			1,013
Foreclosed assets expense		528			514			1,474
Intangible amortization		446			209			209
Operational losses		764			618			787
Provision for foreclosed asset losses		208			682			1,728
Change in reserve for unfunded commitments		(395	)		(1,200	)		875
Legal settlement		—			339			2,090
Merger expense		4,858			312			—
Other		10,919			10,144			9,662
Total other noninterest expense		52,835			41,668			48,046
Total noninterest expense	$	110,379		$	93,604		$	97,998
Merger expense:
Incentive compensation	$	1,174			—			—
Benefits and other compensation costs		94			—			—
Data processing and software		475			—			—
Professional fees		2,390		$	312			—
Other		725			—			—
Total merger expense	$	4,858		$	312			—

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Allowance for Loan Losses - Presentation of Credit Quality Indicators (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	$ 2,282,524	$ 1,672,007	$ 1,564,823
Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,612,749	1,483,546
PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	616,878	134,749
PCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	52,897	53,712
Pass [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,537,988	1,394,438
Pass [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	596,332	123,715
Special mention [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	18,836	24,411
Special mention [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	15,107	6,336
Substandard [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	55,925	64,684
Substandard [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	5,439	4,698
Loss [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans		13
RE Mortgage [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	279,420	195,013	131,684
RE Mortgage [Member] | Residential [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	154,594	129,882
RE Mortgage [Member] | Residential [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	120,821	60,475
RE Mortgage [Member] | Residential [Member] | PCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	4,005	4,656
RE Mortgage [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,335,939	912,850	878,446
RE Mortgage [Member] | Commercial [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	928,797	824,912
RE Mortgage [Member] | Commercial [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	376,225	57,678
RE Mortgage [Member] | Commercial [Member] | PCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	30,917	30,260
RE Mortgage [Member] | Pass [Member] | Residential [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	146,949	121,969
RE Mortgage [Member] | Pass [Member] | Residential [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	119,643	59,798
RE Mortgage [Member] | Pass [Member] | Commercial [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	883,102	768,596
RE Mortgage [Member] | Pass [Member] | Commercial [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	359,537	48,548
RE Mortgage [Member] | Special mention [Member] | Residential [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,122	1,265
RE Mortgage [Member] | Special mention [Member] | Residential [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	547
RE Mortgage [Member] | Special mention [Member] | Commercial [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	11,521	15,862
RE Mortgage [Member] | Special mention [Member] | Commercial [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	12,979	5,810
RE Mortgage [Member] | Substandard [Member] | Residential [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	6,523	6,648
RE Mortgage [Member] | Substandard [Member] | Residential [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	631	677
RE Mortgage [Member] | Substandard [Member] | Commercial [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	34,174	40,454
RE Mortgage [Member] | Substandard [Member] | Commercial [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	3,709	3,320
Home equity lines of credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	352,584	339,866
Home equity lines of credit [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	305,166	316,207
Home equity lines of credit [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	38,397	13,576
Home equity lines of credit [Member] | PCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	9,021	10,083
Home equity lines of credit [Member] | Pass [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	292,244	203,232
Home equity lines of credit [Member] | Pass [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	36,531	12,716
Home equity lines of credit [Member] | Special mention [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	3,590	4,529
Home equity lines of credit [Member] | Special mention [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	936	195
Home equity lines of credit [Member] | Substandard [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	9,332	9,446
Home equity lines of credit [Member] | Substandard [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	930	665
Home equity loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	31,314	14,588	13,557
Home equity loans [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	23,559	13,849
Home equity loans [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	6,985	253
Home equity loans [Member] | PCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	770	486
Home equity loans [Member] | Pass [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	20,976	12,284
Home equity loans [Member] | Pass [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	6,813	253
Home equity loans [Member] | Special mention [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	743	504
Home equity loans [Member] | Special mention [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	147
Home equity loans [Member] | Substandard [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,840	1,061
Home equity loans [Member] | Substandard [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	25
Auto Indirect [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	112	946	3,816
Auto Indirect [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	112	946
Auto Indirect [Member] | Pass [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	66	717
Auto Indirect [Member] | Special mention [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	11	118
Auto Indirect [Member] | Substandard [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	35	111
Other Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	33,074	27,763
Other Consumer [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	28,230	25,608
Other Consumer [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	4,770	2,074
Other Consumer [Member] | PCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	74	81
Other Consumer [Member] | Pass [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	27,396	24,653
Other Consumer [Member] | Pass [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	4,399	2,020
Other Consumer [Member] | Special mention [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	591	756
Other Consumer [Member] | Special mention [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	230	18
Other Consumer [Member] | Substandard [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	243	196
Other Consumer [Member] | Substandard [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	141	36
Other Consumer [Member] | Loss [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans		3
C&I [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	174,945	131,878	135,528
C&I [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	126,611	124,650
C&I [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	40,899	693
C&I [Member] | PCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	7,435	6,535
C&I [Member] | Pass [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	124,707	121,580
C&I [Member] | Pass [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	40,628	380
C&I [Member] | Special mention [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	636	938
C&I [Member] | Special mention [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	268	313
C&I [Member] | Substandard [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,268	2,122
C&I [Member] | Substandard [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	3
C&I [Member] | Loss [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans		10
Construction [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	38,618	31,933
Construction [Member] | Residential [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	21,135	30,367
Construction [Member] | Residential [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	16,808
Construction [Member] | Residential [Member] | PCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	675	1,566
Construction [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	35,518	17,170
Construction [Member] | Commercial [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	24,545	17,125
Construction [Member] | Commercial [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	11,973
Construction [Member] | Commercial [Member] | PCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans		45
Construction [Member] | Pass [Member] | Residential [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	18,112	25,836
Construction [Member] | Pass [Member] | Residential [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	16,808
Construction [Member] | Pass [Member] | Commercial [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	24,436	16,571
Construction [Member] | Pass [Member] | Commercial [Member] | PNCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	11,973
Construction [Member] | Special mention [Member] | Residential [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	622	96
Construction [Member] | Special mention [Member] | Commercial [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans		343
Construction [Member] | Substandard [Member] | Residential [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	2,401	4,435
Construction [Member] | Substandard [Member] | Commercial [Member] | Originated loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	$ 109	$ 211

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Other Borrowings - Additional Information (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Debt Disclosure [Abstract]
Security repurchase agreement	$ 0	$ 0
Other collateralized borrowings	9,276,000	6,335,000
Repurchase investment securities sold and pledged as collateral under securities repurchase agreement	29,298,000
FHLB collateral line of credit, maximum borrowings capacity	865,466,000
FHLB collateral line of credit, outstanding balance	0
FHLB collateral line of credit, remaining borrowing capacity	865,466,000
Investment securities designated as potential collateral under collateral line of credit	108,917,000
Loans designated as potential collateral under collateralized line of credit with FHLB	1,217,944,000
Collateralized line of credit with San Francisco Federal Reserve Bank, maximum borrowings capacity	138,545,000
Collateralized line of credit with San Francisco Federal Reserve Bank, outstanding balance	0
Collateralized line of credit with San Francisco Federal Reserve Bank, remaining borrowing capacity	138,545,000
Investment securities designated as potential collateral under collateral line of credit with San Francisco Federal Reserve Bank	451,000
Loans designated as potential collateral under collateral line of credit with San Francisco Federal Reserve Bank	200,282,000
Unused correspondent banking lines of credit from commercial banks for federal funds	$ 15,000,000

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Business Combinations - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended	6 Months Ended
	Oct. 03, 2014	Dec. 31, 2014	Jun. 30, 2014 Bank	Dec. 31, 2013	Aug. 21, 2007
Business Acquisition [Line Items]
Business acquisition, common stock issued to acquiree's shareholders	6,575,550
Fixed share exchange ratio	0.9433
Aggregate ownership percentage	28.90%
Cash in-lieu of fractional shares	$ 6,823
Business combination share outstanding		22,714,964		16,076,662	15,814,662
Assets		3,916,458,000		2,744,066,000
Decrease in deferred tax asset		7,128,000
Consolidation description		The Company consolidated four former North Valley Bank, and four Tri Counties Bank branches into other Tri Counties Bank branches or other former North Valley Bank branches during January 2015.
North Valley Bancorp [Member]
Business Acquisition [Line Items]
Acquisition, completion date		Oct. 03, 2014
Closing stock price	$ 23.01
Consideration paid per share	$ 21.71
Cash in-lieu of fractional shares	7,000
Business combination share outstanding	22,714,964
Business combination consideration value	151,310,000
Number of commercial banks			22
Assets			935,000,000
Increase in net book value of land and buildings acquired	4,785,000
Recognized intangible related to acquisition	6,614,000
Number of lease contracts assumed	13
Unfavorable leasehold interests	293,000
Decrease in deferred tax asset	1,341,000
One-time costs associated with acquisitions	4,858,000
Non-tax deductible acquisition costs	1,269,000
North Valley Bancorp [Member] | Junior subordinated debt [Member]
Business Acquisition [Line Items]
Discount on debt instrument	6,664,000
Reduction in deferred tax assets, fair value adjustments	(6,664,000)
North Valley Bancorp [Member] | Minimum [Member] | Junior subordinated debt [Member]
Business Acquisition [Line Items]
Amortization period of debt discount	18 years
North Valley Bancorp [Member] | Maximum [Member] | Junior subordinated debt [Member]
Business Acquisition [Line Items]
Amortization period of debt discount	21 years
North Valley Bancorp [Member] | Deferred income taxes [Member]
Business Acquisition [Line Items]
Reduction in deferred tax assets, fair value adjustments	6,293,000
North Valley Bancorp [Member] | Core deposit intangibles [Member]
Business Acquisition [Line Items]
Recognized intangible related to acquisition	6,614,000
Percentage of acquired intangibles	0.97%
Finite lived intangible asset useful life	7 years
Reduction in deferred tax assets, fair value adjustments	$ (6,283,000)

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Shareholders' Equity

12 Months Ended

Dec. 31, 2014

Equity [Abstract]

Shareholders' Equity

Note 19 – Shareholders’ Equity

Dividends Paid

The Bank paid to the Company cash dividends in the aggregate amounts of $8,270,000, $8,175,000, and $8,522,000 in 2014, 2013, and 2012, respectively. The Bank is regulated by the Federal Deposit Insurance Corporation (FDIC) and the State of California Department of Business Oversight. Absent approval from the Commissioner of Department of Business Oversight, California banking laws generally limit the Bank’s ability to pay dividends to the lesser of (1) retained earnings or (2) net income for the last three fiscal years, less cash distributions paid during such period. Under this law, at December 31, 2014, the Bank may pay dividends of $52,798,000.

Shareholders’ Rights Plan

On June 25, 2001, the Company announced that its Board of Directors adopted and entered into a Shareholder Rights Agreement designed to protect and maximize shareholder value and to assist the Board of Directors in ensuring fair and equitable benefit to all shareholders in the event of a hostile bid to acquire the Company. The Company adopted this Rights Agreement to protect shareholders from coercive or otherwise unfair takeover tactics. In general terms, the Rights Plan would have imposed a significant penalty upon any person or group that acquired 15% or more of the Company’s outstanding common stock without approval of the Company’s Board of Directors.

On June 4, 2014, the Company entered into an amendment to its Rights Agreement that accelerated the expiration of the Rights from July 10, 2021 to July 1, 2014 and had the effect of terminating the Rights Agreement as of that date. At the time of the termination, all Rights distributed to holders of the Company’s common stock pursuant to the Rights Agreement expired.

Stock Repurchase Plan

On August 21, 2007, the Board of Directors adopted a plan to repurchase, as conditions warrant, up to 500,000 shares of the Company’s common stock on the open market. The timing of purchases and the exact number of shares to be purchased will depend on market conditions. The 500,000 shares authorized for repurchase under this stock repurchase plan represented approximately 3.2% of the Company’s 15,814,662 outstanding common shares as of August 21, 2007. This stock repurchase plan has no expiration date. As of December 31, 2013, the Company had repurchased 166,600 shares under this plan.

Stock Repurchased Under Equity Compensation Plans

During the years ended December 31, 2014, 2013, and 2012, employees tendered 103,268, 172,941, and 14,120, respectively, of the Company’s common stock with market value of $2,551,000, $3,490,000, and $224,000, respectively, in lieu of cash to exercise options to purchase shares of the Company’s stock and to pay income taxes related to such exercises as permitted by the Company’s shareholder-approved equity compensation plans. The tendered shares were retired. The market value of tendered shares is the last market trade price at closing on the day an option is exercised. Stock repurchased under equity incentive plans are not counted in the total of stock repurchased under the stock repurchase plan announced August 21, 2007.

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Stock Options and Other Equity-Based Incentive Instruments - Weighted-Average Assumptions Used to Determine Fair Value of Options Granted (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Assumptions used to value option grants [Abstract]
Average expected terms (years)	6 years 3 months 18 days	7 years	8 years 9 months 18 days
Volatility	42.10%	56.20%	51.50%
Annual rate of dividends	1.90%	1.87%	2.36%
Discount rate	1.69%	1.26%	1.49%

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Comprehensive Income - Components of Accumulated Other Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity [Abstract]
Net unrealized gains on available for sale securities	$ 4,040	$ 4,202
Tax effect	(1,699)	(1,767)
Unrealized holding gains on available for sale securities, net of tax	2,341	2,435
Unfunded status of the supplemental retirement plans	(7,885)	(787)
Tax effect	3,315	331
Unfunded status of the supplemental retirement plans, net of tax	(4,570)	(456)	(2)
Joint beneficiary agreement liability	26	(122)
Tax effect	0	0
Joint beneficiary agreement liability, net of tax	26	(122)
Accumulated other comprehensive income	$ (2,203)	$ 1,857

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Income Taxes - Reconciliation of Effective Tax Rate and Statutory Federal Income Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Federal statutory income tax rate	35.00%	35.00%	35.00%
State income taxes, net of federal tax benefit	7.00%	6.80%	6.70%
Tax-exempt interest on municipal obligations	(0.40%)	(0.40%)	(0.50%)
Tax-exempt life insurance related income	(1.50%)	(1.30%)	(2.00%)
Non-deductible joint beneficiary agreement expense	0.20%	0.20%	0.30%
Non-deductible merger expense	1.00%
Other	0.20%	(0.10%)	1.00%
Effective Tax Rate	41.50%	40.20%	40.50%

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Business Combinations - Schedule of Pro Forma Financial Information (Detail) (North Valley Bancorp [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
North Valley Bancorp [Member]
Business Acquisition [Line Items]
Net interest income	$ 139,520	$ 132,635
Provision for (benefit from) loan losses	(4,045)	(715)
Noninterest income	43,587	50,966
Noninterest expense	147,295	133,073
Income before income taxes	39,857	51,243
Income taxes	16,453	20,091
Net income	$ 23,404	$ 31,152
Basic earnings per share	$ 1.03	$ 1.38
Diluted earnings per share	$ 1.02	$ 1.37

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Summary of Quarterly Results of Operations (unaudited)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Summary of Quarterly Results of Operations (unaudited)

Note 30 - Summary of Quarterly Results of Operations (unaudited)

The following table sets forth the results of operations for the four quarters of 2014 and 2013, and is unaudited; however, in the opinion of Management, it reflects all adjustments (which include only normal recurring adjustments) necessary to present fairly the summarized results for such periods.

	2014 Quarters Ended
	December 31,			September 30,			June 30,		March 31,
	(dollars in thousands, except per share data)
Interest and dividend income:
Loans:
Discount accretion PCI – cash basis	$	107		$	290		$	69	$	203
Discount accretion PCI – other		919			822			811		984
Discount accretion PNCI		796			402			624		379
All other loan interest income		28,914			23,466			22,929		22,172
Total loan interest income		30,736			24,980			24,433		23,738
Debt securities, dividends and interest bearing cash at Banks (not FTE)		5,671			4,151			3,985		3,421
Total interest income		36,407			29,131			28,418		27,159
Interest expense		1,437			1,082			1,075		1,087
Net interest income		34,970			28,049			27,343		26,072
(Benefit from) provision for loan losses		(1,421	)		(2,977	)		1,708		(1,355	)
Net interest income after provision for loan losses		36,391			31,026			25,635		27,427
Noninterest income		9,755			8,589			7,877		8,295
Noninterest expense		36,566			25,380			25,116		23,317
Income before income taxes		9,580			14,235			8,396		12,405
Income tax expense		3,930			6,001			3,537		5,040
Net income	$	5,650		$	8,234		$	4,859	$	7,365
Per common share:
Net income (diluted)	$	0.25		$	0.50		$	0.30	$	0.45
Dividends	$	0.11		$	0.11		$	0.11	$	0.11

	2013 Quarters Ended
	December 31,		September 30,			June 30,		March 31,
	(dollars in thousands, except per share data)
Interest and dividend income:
Loans:
Discount accretion PCI – cash basis	$	255	$	140		$	129	$	167
Discount accretion PCI – other		893		898			732		597
Discount accretion PNCI		568		1,115			815		766
All other loan interest income		22,754		22,970			22,207		22,542
Total loan interest income		24,470		25,123			23,883		24,072
Debt securities, dividends and interest bearing cash at Banks (not FTE)		2,992		2,413			1,873		1,734
Total interest income		27,462		27,536			25,756		25,806
Interest expense		1,123		1,169			1,167		1,237
Net interest income		26,339		26,367			24,589		24,569
Provision for (benefit from) loan losses		172		(393	)		614		(1,108	)
Net interest income after provision for loan losses		26,167		26,760			23,975		25,677
Noninterest income		7,353		9,127			10,131		10,218
Noninterest expense		24,878		23,616			23,509		21,601
Income before income taxes		8,642		12,271			10,597		14,294
Income tax expense		3,406		4,910			4,272		5,817
Net income	$	5,236	$	7,361		$	6,325	$	8,477
Per common share:
Net income (diluted)	$	0.32	$	0.45		$	0.39	$	0.53
Dividends	$	0.11	$	0.11		$	0.11	$	0.09

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Other Assets

12 Months Ended

Dec. 31, 2014

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Other Assets

Note 12 – Other Assets

Other assets were comprised of (in thousands):

	As of December 31,
	2014		2013
Deferred tax asset, net (Note 22)	$	37,706	$	26,781
Prepaid expense		2,034		2,131
Software		1,327		1,318
Advanced compensation		908		1,175
Capital Trusts		1,690		1,238
Miscellaneous other assets		8,070		3,443
Total other assets	$	51,735	$	36,086

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Deposits - Schedule of Maturities of Time Deposits (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Summary of maturities of time deposits [Abstract]
2015	$ 282,629
2016	46,606
2017	17,017
2018	6,241
2019	5,516
Thereafter	3
Total	$ 358,012