BASIS OF PRESENTATION, NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING AND REPORTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2017
BASIS OF PRESENTATION, NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING AND REPORTING POLICIES
Basis of Presentation	Basis of Presentation—The accompanying consolidated financial statements include the accounts of the Company and the Bank, a wholly-owned subsidiary of the Company. All material intercompany balances and transactions have been eliminated in consolidation.
Reclassification	Reclassification— Within noninterest expense, telephone and communication costs for 2016 and 2015 have been reclassified from printing, stationery and office to a separate line to conform to the 2017 financial statement presentation in the consolidated statements of income.
Segment Reporting	Segment Reporting—The Company has one reportable segment. The Company’s activities are interrelated and each activity is dependent and assessed based on how each of the activities of the Company supports the others. For example, lending is dependent upon the ability of the Company to fund itself with deposits and borrowings while managing the interest rate and credit risk. Accordingly, all significant operating decisions are based upon analysis of the Company as one segment or unit. The Company’s chief operating decision‑maker, the CEO, uses the consolidated results to make operating and strategic decisions.
Use of Estimates	Use of Estimates—In preparing financial statements in conformity with accounting principles generally accepted in the U.S., or GAAP, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the consolidated balance sheets and reported amounts of revenues and expenses during the reporting periods. Actual results could differ from these estimates. Material estimates that are particularly susceptible to significant change in the near term relate primarily to the determination of the allowance for loan losses, the fair value of the Company’s investment securities, repossessed assets, deferred tax assets, financial instruments and intangible assets.
Cash and Due from Banks	Cash and Due from Banks—The Bank is required to maintain regulatory reserves with the Federal Reserve Bank. The reserve requirements for the Bank were approximately $15.8 million and $16.1 million at December 31, 2017 and 2016, respectively. Accordingly, cash and due from banks balances were restricted to that extent. The majority of cash, cash equivalents and time deposits of the Company are maintained with major financial institutions in the U.S. and have original maturities less than 90 days. Interest-bearing deposit accounts with these financial institutions may exceed the amount of insurance provided on such deposits; however, these deposits typically may be redeemed upon demand and therefore, bear minimal risk. In monitoring this credit risk, the Company periodically evaluates the stability of the financial institutions with which it has deposits. The Company has cash deposits in correspondent financial institutions in excess of the amount insured by the FDIC in the amount of $91.8 million and $79.2 million at December 31, 2017 and 2016, respectively.
Loans	Loans—Through its Bank subsidiary, the Company makes mortgage, commercial and consumer loans to customers throughout counties located in Southeast Texas. The ability of the Company’s debtors to honor their contracts is dependent in part upon the general economic conditions in these areas. Loans that management has the intent and ability to hold for the foreseeable future or until maturity or pay‑off, are measured at historical cost and generally reported at their outstanding unpaid principal balances, net of any unearned income, charge‑offs and unamortized deferred fees and costs. Interest income is accrued on the unpaid principal balance. Loan origination fees and certain direct origination costs are deferred and recognized as adjustments to interest income over the lives of the related loans. The Company records lines of credit at their funded portion. All unfunded amounts for loans in process and credit lines are reported as unfunded commitments. Interest income is accrued on the unpaid principal balance. A loan portfolio segment is the level at which an entity develops and documents a systematic methodology to determine the allowance for credit losses and a class of financing receivables as the level of disaggregation of portfolio segments based on the initial measurement attribute, risk characteristics and methods for assessing risk. The Company’s loan portfolio segments are commercial and industrial, real estate, consumer, agriculture and other. The classes of financing receivables within the real estate segment are commercial real estate, construction and development, 1-4 family residential and multi-family residential. The Company selectively extends credit to establish long‑term relationships with its customers. The Company mitigates the risks inherent in lending by focusing on businesses and individuals with demonstrated payment history, historically favorable profitability trends and stable cash flows. In addition to these primary sources of repayment, the Company looks to tangible collateral and personal guarantees as secondary sources of repayment. Lending officers are provided with detailed underwriting policies covering all lending activities in which the Company is engaged and that require all lenders to obtain appropriate approvals for the extension of credit. The Company also maintains documentation requirements and extensive credit quality assurance practices to identify credit portfolio weaknesses as early as possible so any exposures that are discovered may be reduced. The Company has certain lending policies and procedures in place that are designed to maximize loan income within an acceptable level of risk. Management and the Board of Directors review and approve these policies and procedures on a regular basis. A reporting system supplements the review process by providing management and the Board of Directors with frequent reports related to loan production, loan quality, concentrations of credit, loan delinquencies and nonperforming and potential problem loans. Diversification in the loan portfolio is a means of managing risk associated with fluctuations in economic conditions.
Government Guaranteed Loans	Government Guaranteed Loans—The Company originates loans that are partially guaranteed by the Small Business Administration, or SBA, and the Company may sell the guaranteed portion of these loans as market conditions and pricing allow for a gain to be recorded on the sale. Loan sales are recorded when control over the transferred asset has been relinquished. Control over the transferred portion is deemed to be surrendered when the assets have been removed from the Company, the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets and the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity. In calculating the gain on sale of SBA loans, the Company’s investment in the loan is allocated among the unguaranteed portion of the loan, the servicing amount retained and the guaranteed portion of the loan sold, based on the relative fair market value of each portion. The gain on the sold portion of the loan is recognized based on the difference between the sale proceeds and the allocated investment.
Loans Servicing	Loan Servicing—Servicing assets are recognized as separate assets when rights are acquired through the sale of financial assets. Servicing assets are initially recorded at fair market value and amortized in proportion to and over the service period and assessed for impairment or increased obligation based on fair value at each reporting date. Fair market value is based on the gross coupon less an assumed contractual servicing cost. Servicing fee income is recorded for fees earned from servicing loans. The fees are based on a contractual percentage of the outstanding principal and are recorded as income when earned. The amortization of the loan servicing rights is netted against loan servicing fee income.
Nonrefundable Fees and Costs Associated with Lending Activities	Nonrefundable Fees and Costs Associated with Lending Activities—Loan origination and commitment fees are deferred and accreted into income over the term of the loan. The unamortized balance of deferred loan fees reduces the investment in loans on the balance sheet. In addition, direct origination costs are deferred and amortized against interest income over the term of the loan. The unamortized balance of deferred origination costs is added to the investment in loans on the balance sheet.
Nonperforming Loans and Past Due Loans	Nonperforming Loans and Past Due Loans—Included in the nonperforming loan category are loans which have been categorized by management as nonaccrual because of delinquency status or because collection of interest is doubtful and loans which have been restructured to provide a reduction in the interest rate or a deferral of interest or principal payments. When the payment of principal or interest on a loan is delinquent for 90 days, or earlier in some cases, the loan is placed on nonaccrual status, unless the loan is in the process of collection or renewal and the underlying collateral fully supports the carrying value of the loan. If the decision is made to continue accruing interest on the loan, periodic reviews are made to confirm the accruing status of the loan and the probability that the Company will collect all principal and interest amounts outstanding. When a loan is placed on nonaccrual status, interest accrued and uncollected during the current year prior to the judgment of uncollectability is charged to operations, unless the loan is well secured with collateral values sufficient to ensure collection of both principal and interest. Generally, any payments received on nonaccrual loans are applied first to outstanding loan amounts, reducing the Company’s recorded investment in the loan and next to the recovery of charged‑off principal or interest amounts. Any excess is treated as recovery of lost interest. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. A loan is defined as impaired if, based on current information and events, it is probable that the Company will be unable to collect all amounts due in accordance with the original contractual terms of the loan agreement, including scheduled principal and interest payments. The allowance for loan losses related to impaired loans is determined based on the difference between the carrying value of loans and the present value of expected cash flows discounted at the loan’s effective interest rate or, as a practical expedient, the loan’s observable market price or the fair value of the collateral if the loan is collateral dependent. Interest income received on impaired loans is either applied against principal or realized as interest income, according to management’s judgment as to the collectability of principal.
Trouble Debt Restructurings	Troubled Debt Restructurings—The Company will classify a loan as a troubled debt restructuring if both (i) the borrower is experiencing financial difficulties and (ii) the borrower has been granted a concession. Concessions may include interest rate reductions or below market interest rates, principal forgiveness, restructuring amortization schedules and other actions intended to minimize potential losses. Interest is generally accrued on such loans in accordance with the new terms.
Allowances for Loan Losses	Allowance for Loan Losses—The allowance for loan losses represents management’s estimate of probable losses inherent in the Company’s lending portfolio. Credit exposures deemed to be uncollectible are charged against these accounts. Cash recovered on previously charged‑off amounts is recorded as a recovery to these accounts. The allowance for loan losses does not include amounts related to accrued interest receivable as accrued interest receivable is reversed when a loan is placed on nonaccrual or is charged‑off. The Company employs a systematic methodology for determining the allowance for loan losses that consists of two components: (i) specific valuation allowances based on probable losses on specific loans and (ii) historical valuation allowances based on historical average loss experience for similar loans with similar characteristics and trends adjusted, as necessary, to reflect the impact of current conditions and further adjusted for general economic conditions and other risk factors both internal and external to the Company. Except for groups of smaller‑balance homogenous loans, a loan is considered impaired when, based on current information, it is probable that the borrower will be unable to pay contractual interest or principal payments as scheduled in the loan agreement. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. The specific allowance related to an impaired loan is established when the carrying value of the loan is more than the present value of expected cash flows discounted at the loan’s effective interest rate or, as a practical expedient, the loan’s observable market price or the fair value of the collateral if the loan is collateral dependent. The Company uses fair market value, less reasonable and customary costs to sell, for collateral dependent loans. In certain instances, a specific allowance will be established to protect against market deterioration. The allowance on the remaining portfolio segments is calculated using historical loss rates adjusted for qualitative factors. Criticized and classified loans, not deemed impaired, are subject to an allowance based on the historical loss migration analysis by grade adjusted for qualitative factors. Pass loans are subject to an allowance based on historical losses by product type adjusted for qualitative factors. The general component of the allowance reflects the margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating specific and historical losses in the portfolio. The general valuation factor is based upon a more qualitative analysis of risk. Various risks are considered in the determination of the environmental adjustment factor such as asset quality, lending management and staff, loan policies and procedures, loan review, credit concentrations, loan volumes, collateral values, compliance and economic trends. A majority of the loan portfolio is comprised of loans to businesses and individuals in the Houston metropolitan and Beaumont area. This geographic concentration subjects the loan portfolio to the general economic conditions within this area. The risks created by this concentration have been considered by management in the determination of the adequacy of the allowance for loan losses
Concentration of Risk	Concentrations of Risk—The Company’s investments are potentially subject to various levels of risk associated with economic and political events beyond management’s control. Consequently, management’s judgment as to the level of losses that currently exist or may develop in the future involves the consideration of current and anticipated conditions and their potential effects on the Company’s investments. Due to the level of uncertainty related to changes in the value of investment securities, it is possible that changes in risks could materially impact the amounts reflected herein. Generally, all of the Company’s loans, loan commitments, and letters of credit have been granted to customers in the counties in Texas in which it operates branch facilities. The Company’s loans are generally secured by specific items of collateral including real property, consumer assets, and business assets. Although the Company has a diversified loan portfolio, a substantial portion of its debtors’ ability to honor their contracts is dependent on local economic conditions. Concentrations of credit by type of loan are set forth in Note 4. It is the Company’s policy to not extend credit to any single borrower or group of related borrowers in excess of its subsidiary Bank’s legal lending limits as defined by state and federal banking regulations. The regional economy of certain counties where the Company operates depends heavily on the forestry and oil and gas industries. The ultimate collectability and performance of a substantial portion of the Company’s loan portfolio is dependent on the local market conditions in all counties in which the Company operates.
Loans Held for Sale	Loans Held for Sale—Loans held for sale include mortgage loans originated with the intent to sell on the secondary market. These loans are held for an interim period, usually less than 30 days. Accordingly, these loans are classified as held for sale and are carried at cost, which is determined on an aggregate basis and deemed to be the equivalent of fair value based on the short-term nature of the loans.
Securities	Securities— Securities that the Company intends to hold for an indefinite period of time are classified as available for sale and are carried at fair value. Unrealized gains and losses are excluded from earnings and reported as a separate component of shareholders’ equity until realized. Securities within the available for sale portfolio may be used as part of the Company’s asset/liability strategy and may be sold in response to changes in interest risk, prepayment risk or other similar economic factors. Securities that the Company has both the positive intent and ability to hold to maturity are classified as held to maturity and are carried at cost, adjusted for the amortization of premiums and the accretion of discounts. Management has the positive intent and the ability to hold these long‑term securities until their scheduled maturities. Securities are accounted for on a trade date basis. Premiums and discounts are amortized and accreted to income using the level‑yield method of accounting, adjusted for prepayments as applicable. Interest earned on these assets is included in interest income. The specific identification method of accounting is used to compute gains or losses on the sales of these assets. Securities are evaluated for other‑than‑temporary impairment, or OTTI, on at least a quarterly basis and more frequently when economic or market conditions warrant such an evaluation. In determining OTTI, management considers many factors, including: (i) the duration and the extent to which the fair value has been less than cost, (ii) the financial condition and near‑term prospects of the issuer and (iii) the intent and the ability of the Company to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value. The assessment of whether an other‑than‑temporary decline exists involves a high degree of subjectivity and judgment and is based on the information available to management at a point in time. When OTTI occurs, the amount of the OTTI recognized in earnings depends on whether the Company intends to sell the security or will be required to sell the security before recovery of its amortized cost basis, less any current‑period credit loss. If the Company intends to sell the security or it is more likely that the Company will be required to sell the security before recovery of its amortized cost basis less any current‑period credit loss, the OTTI shall be recognized in earnings equal to the entire difference between the investment’s amortized cost basis and its fair value at the balance sheet date. If the Company does not intend to sell the security and it is not likely that the Company will be required to sell the security before recovery of its amortized cost basis, less any current‑period loss, the OTTI shall be separated into the amount representing the credit loss and the amount related to all other factors. The amount of the total OTTI related to the credit loss is determined based on the present value of cash flows expected to be collected and is recognized in earnings. The amount of the total OTTI related to other factors is recognized in other comprehensive income, net of applicable taxes. The previous amortized cost basis less the OTTI recognized in earnings becomes the new amortized cost basis of the investment.
Other Investments	Other Investments—Banks that are members of the Federal Home Loan Bank, or FHLB, are required to maintain a stock investment in the FHLB calculated as a percentage of aggregate outstanding mortgages, outstanding FHLB advances and other financial instruments. Both stock and cash dividends may be received on FHLB stock and are recorded when received as interest income. At December 31, 2017 and 2016, the Company held $1.2 million in FHLB stock. Banks that are members of the Federal Reserve System are required to annually subscribe to Federal Reserve Bank stock in specific ratios to the Bank’s equity. Although the par value of the stock is $100 per share, member banks pay only $50 per share at the time of purchase with an understanding that the other half of the subscription amount is subject to call at any time. The stock does not provide the owner with control or financial interest in the Federal Reserve Bank, is non‑transferable and cannot be used as collateral. Dividends are received in the form of cash and are recorded as interest income when received. At December 31, 2017 and 2016, the Company held $9.3 million in Federal Reserve Bank stock, which is included in other investments on the consolidated balance sheets. The Company also held an investment totaling $141,000 in the stock of The Independent Bankers Financial Corporation, or TIB, at December 31, 2017 and 2016, which is included in other investments on the consolidated balance sheets. Investments in stock of the FHLB, the Federal Reserve Bank and TIB are restricted investments due to limited marketability and are stated at cost as management believes their cost value is ultimately recoverable. The Company has investments in two private investment funds and a limited partnership, which totaled $1.6 million and $1.5 million at December 31, 2017 and 2016, respectively, included in other investments on the consolidated balance sheets. These investments are qualified Community Reinvestment Act, or CRA, investments under the Small Business Investment Company, or SBIC, program of the SBA. The investments are stated at cost, which management believes to be recoverable and have required periodic capital calls. Unfunded commitments related to these investments totaled $3.8 million at December 31, 2017.
Premises and Equipment	Premises and Equipment—Premises and equipment are carried at cost, less accumulated depreciation and amortization. Depreciation expense is computed on the straight‑line method over the estimated useful lives of the assets. Land is carried at cost. Leasehold improvements are amortized over the life of the lease, plus renewal options or the estimated useful lives, whichever is shorter. Buildings are depreciated over a period not to exceed thirty-two years. Depending upon the type of furniture and equipment, the depreciation period will range from three to ten years. Bank vehicles are amortized over a period of three years. Gains and losses on dispositions are included in other noninterest income. During periods of real estate development, interest on construction costs is capitalized if considered material by management.
Goodwill, Servicing Assets and Intangible Assets	Goodwill, Servicing Assets and Intangible Assets—Goodwill is evaluated for impairment at least annually and on an interim basis if an event or circumstance indicates that it is likely that an impairment has occurred. Impairment would exist if the fair value of the reporting unit at the date of the test is less than the goodwill recorded on the financial statements. If an impairment of goodwill exists, a loss would then be recognized in the consolidated financial statements to the extent of the impairment. The Company’s identified intangibles are core deposits, customer relationship intangibles and loan servicing assets and these intangibles are being amortized over their estimated useful lives. Our intangible assets are tested for impairment whenever events or changes in circumstances indicate the carrying amount of the assets may not be recoverable from future undiscounted cash flows. Core deposit intangibles are amortized over a seven to ten-year period using an accelerated method in keeping with the anticipated benefits derived from those core deposits. Customer relationship intangibles are being amortized over a fifteen-year period on a straight-line basis. Capitalized servicing assets are amortized into noninterest expense in proportion to, and over the period of, the estimated future net servicing income of the underlying financial assets. The servicing asset is assessed for impairment or increased obligation based on fair value at each reporting date. Fair value is based on the gross coupon less an assumed contractual servicing cost, or based upon discounted cash flows using market‑based assumptions. Servicing fee income is recorded for fees earned from servicing loans. The fees are based on a contractual percentage of the outstanding principal or a fixed amount per loan and are recorded as income when earned.
Bank owned life insurance	Bank-owned life insurance—The Company has purchased life insurance policies on certain employees, which are carried on the consolidated balance sheet at their cash surrender value. Increases to the cash surrender value of the policies are recorded in noninterest income. Expenses related to life insurance policies are recorded in other noninterest expense.
Repossessed Real Estate and Other Assets	Repossessed Real Estate and Other Assets—Real estate and other assets acquired through repossession or foreclosure are held for sale and are initially recorded at the fair value of the asset less any selling costs, establishing a new cost basis. Outstanding loan balances are reduced to reflect this value through charges to the allowance for possible credit losses. Subsequent to repossession or foreclosure, the asset is carried at the lower of its new cost basis or fair value, less estimated costs to sell. Subsequent adjustments to reflect changes in value below the recorded amounts are recognized in income in the period such determinations are assessed. Required developmental costs associated with foreclosed property under construction are capitalized and considered in determining the fair value of the property. Operating expenses of these assets, net of related income and gains and losses on their disposition are included in other noninterest income or expense.
Other Assets	Other Assets—Included in other assets on the Company’s consolidated balance sheets are accrued interest receivables on loans and investments, prepaid expenses and other miscellaneous assets.
Repurchase Agreements	Repurchase Agreements—The Company utilizes securities sold under agreements to repurchase to facilitate the needs of our customers and to facilitate short‑term funding needs. Securities sold under agreements to repurchase are stated at the amount of cash received in the transaction. The Company monitors collateral levels on a continuous basis and may be required to provide additional collateral based on the fair value of the underlying securities. Pledged securities are maintained with our safekeeping agent.
Derivative Financial Instruments	Derivative Financial Instruments—All derivatives are recorded at fair value on the balance sheet. Derivatives executed with the same counterparty are generally subject to master netting arrangements. Fair value amounts recognized for derivatives and fair value amounts recognized for the right/obligation to reclaim/return cash collateral are not offset for financial reporting purposes. The Company did not have derivative instruments that qualified for hedge accounting during the years ended December 31, 2017, 2016 or 2015, but it may in the future as circumstances arise. The Company’s hedging policies permit the use of various derivative financial instruments to manage interest rate risk or to hedge specified assets and liabilities. The Company has outstanding interest rate swap contracts in which the Bank entered into an interest rate swap with a customer and entered into an offsetting interest rate swap with another financial institution at the same time. These interest rate swap contracts are not designated as hedging instruments. The objective of the transactions is to allow the Bank’s customers to effectively convert a variable rate loan to a fixed rate. See further discussion of the Company’s outstanding derivative instruments in Note 14.
Fair Value Measurements	Fair Value Measurements—Fair values of financial instruments are based upon quoted market prices, where available. If such quoted market prices are not available, fair value is estimated based upon models that primarily use, as inputs, observable market‑based parameters. Fair value estimates involve uncertainties and matters of significant judgment regarding interest rates, credit risk, prepayments and other factors, especially in the absence of broad markets for particular items. Changes in assumptions or in market conditions could significantly affect the estimates. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include amounts to reflect counterparty credit quality and the entity’s creditworthiness, among other things, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. The Company has not elected to account for any financial assets or liabilities as trading instruments, which would require changes in market value on these instruments be recorded in the Company’s consolidated statements of income.
Treasury Stock	Treasury Stock—The Company has repurchased shares of its authorized and issued common stock which is now held in treasury pending use for general corporate purposes or retirement. In 2016 and 2015, 635,100 and 246,708 shares of stock were purchased at an average price of $17.56 and $17.60 per share, respectively. There were no shares of stock purchased during 2017.
Income Taxes	Income Taxes—The Company prepares and reports income taxes on a consolidated basis. Income tax expense is recognized for the tax effects of the transactions reported in the consolidated financial statements and consist of taxes currently due, plus deferred taxes related primarily to differences between the book and tax basis of the allowance for possible credit losses, the amortization of identifiable intangibles and accumulated depreciation. The deferred tax assets and liabilities represent the future tax return consequences of those differences, which will be either taxable or deductible when the assets and liabilities are recovered or settled. Deferred tax assets and liabilities are reflected at income tax rates applicable to the period in which the deferred tax assets or liabilities are expected to be realized or settled. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes. 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 the deferred tax assets will be realized. In addition, management does not believe there are any unrecorded deferred tax liabilities that are material to the financial statements. During 2017, a comprehensive U.S. tax reform package, the Tax Cuts and Jobs Act, or Tax Act, was enacted which, among other things, lowered the corporate income tax rate from 35% to 21%. As a result, the Company remeasured its deferred tax assets and liabilities at December 31, 2017 for the change in rate. See Note 15. The Company believes that all significant tax positions utilized by the Company will more likely than not be sustained upon examination by the taxing authorities based on the technical merits of the position. For tax positions meeting the more likely than not threshold, the amount recognized in the financial statements would be the benefit that has a greater than 50% likelihood of being realized upon ultimate settlement with the relevant tax authority. For the years ended December 31, 2017 and 2016, management has determined there are no material uncertain tax positions.
Transfers of Financial Assets	Transfers of Financial Assets—Transfers of financial assets are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (i) the assets have been isolated from the Company, (ii) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets and (iii) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity. If a transfer of an entire financial asset, a group of entire financial assets, or a participating interest in an entire financial asset does not meet the conditions for sale treatment, or if a transfer of a portion of an entire financial interest does not meet the definition of a participating interest, the transferor and the transferee shall account for the transfer as a secured borrowing with pledge of collateral. The transferor shall continue to report the transferred financial assets in its financial statements with no change in their measurement. The Company’s loan participations sold subject to this guidance which met the conditions to be treated as a sale were recorded as such. Any securities sold under agreements to repurchase that did not meet the criteria are included in securities available for sale and repurchase agreements in the Company’s consolidated balance sheets.
Stock-Based Compensation	Stock‑Based Compensation—Stock-based compensation is recognized as compensation cost in the consolidated statements of income based on the fair value on the date of grant. A Black‑Scholes model is utilized to estimate the fair value of stock options and the market value of the Company’s common stock at the date of grant is used as the estimate of fair value of restricted stock. Compensation expense is recognized over the required service period, generally defined as the vesting period, on a straight-line basis.
Interest Rate Risk	Interest Rate Risk—The Company is principally engaged in providing short‑term commercial loans with interest rates that fluctuate with various market indices and intermediate‑term, fixed rate real estate loans. These loans are primarily funded through short‑term demand deposits and longer‑term certificates of deposit with fixed rates. Deposits that are not utilized to fund loans are invested in federal funds or securities that meet the Company’s investment quality guidelines. A portion of the Company’s investments that are available for sale have contractual maturities extending beyond 10 years, bear fixed rates of interest and are collateralized by residential mortgages. Repayment of principal on these bonds is primarily dependent on the cash flows received from payments on the underlying collateral to the bond issuer and therefore, the likelihood of prepayment is impacted by the current economic environment. Reduced prepayments could extend the Company’s original anticipated holding period, or duration and thus increase interest rate risk over time, should market rates increase.
Comprehensive Income	Comprehensive Income—Comprehensive income includes net income along with certain changes in assets and liabilities such as unrealized gains and losses on available for sale securities, which are reported as a separate component in the equity section of the consolidated balance sheets.
Accounting Standards Recently Adopted and Not Yet Adopted	Accounting Standards Recently Adopted The Jumpstart Our Business Startups, or JOBS Act permits an “emerging growth company” to take advantage of an extended transition period to comply with new or revised accounting standards applicable to public companies. However, the Company decided not to take advantage of this provision. As a result, the Company will comply with new or revised accounting standards to the same extent that compliance is required for non‑emerging growth companies. Our decision to opt out of the extended transition period under the JOBS Act is irrevocable. Accounting Standards Update, or ASU, 2016‑05, Derivatives and Hedging (Topic 815:) Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships. ASU 2016‑05 clarifies that a change in the counterparty to a derivative instrument that has been designated as the hedging instrument under ASC Topic 815 does not, in and of itself, require redesignation of that hedging relationship provided that all other hedge accounting criteria continue to be met. ASU 2016‑05 was effective on January 1, 2017 and it did not have a significant impact on the consolidated financial statements. ASU 2016‑07, Investments—Equity Method and Joint Ventures (Topic 323): Simplifying the Transition to the Equity Method of Accounting. The amendments affect all entities that have an investment that becomes qualified for the equity method of accounting as a result of an increase in the level of ownership interest or degree of influence. ASU 2016‑07 simplifies the transition to the equity method of accounting by eliminating retroactive adjustment of the investment when an investment qualifies for use of the equity method, among other things. ASU 2016‑07 became effective on January 1, 2017 and did not have a significant impact on the consolidated financial statements. ASU 2016‑09, Compensation—Stock Compensation (Topic 718): Improvements to Employee Share‑Based Payment Accounting. ASU 2016‑09 simplifies several aspects of the accounting for employee share‑based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. Per ASU 2016‑09: (i) all excess tax benefits and tax deficiencies should be recognized as income tax expense or benefit in the income statement, rather than in additional paid‑in capital under current guidance; (ii) excess tax benefits should be classified along with other income tax cash flows as an operating activity on the statement of cash flows, rather than as a separate cash inflow from financing activities and cash outflow from operating activities under current guidance; (iii) cash paid by an employer when directly withholding shares for tax‑withholding purposes should be classified as a financing activity; and (iv) an entity can make an entity‑wide accounting policy election to either estimate the number of awards that are expected to vest, as under current guidance, or account for forfeitures when they occur. Effective January 1, 2017, the Company adopted ASU 2016‑09. There was no material impact for the year ended December 31, 2017 and the Company does not expect a material impact in future periods. The Company prospectively applied the guidance for the presentation of excess tax benefits as an operating cash flow with no material impact for the year ended December 31, 2017. Finally, the Company elected to account for forfeitures as they occur. ASU 2018-02, Income Statement Reporting – Reporting Comprehensive Income (Topic 220): Reclassifications of Certain Tax Effects from Accumulated Other Comprehensive Income. ASU 2018-02 allows a reclassification from other comprehensive income to retained earnings for tax effects that would otherwise be “stranded” as a result of adjustments required due to the Tax Act. The Company implemented ASU 2018-02 effective December 31, 2017, in conjunction with the deferred tax asset and liability remeasurement required as a result of the Tax Act with no material impact for the year ended December 31, 2017. Accounting Standards Not Yet Adopted ASU 2014‑09, Revenue from Contracts with Customers (Topic 606): ASU 2014‑09 requires entities to recognize revenue in a way that depicts the transfer of 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 requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. In August 2015, the FASB issued ASU 2015‑14, which deferred the effective date of ASU 2014‑09 by one year to January 1, 2018. The Company’s revenue is comprised of net interest income on financial assets and financial liabilities, which is explicitly excluded from the scope of ASU 2014‑09 and noninterest income. The Company adopted ASU 2014-09 effective January 1, 2018 with no significant impact to the Company’s consolidated financial statements. ASU 2016‑01, Financial Instruments‑Overall (Subtopic 825‑10): Recognition and Measurement of Financial Assets and Financial Liabilities. The amendments in this update address certain aspects of recognition, measurement, presentation and disclosure of financial instruments. ASU 2016‑01, among other things, (i) requires equity investments, with certain exceptions, to be measured at fair value with changes in fair value recognized in net income, (ii) simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment, (iii) eliminates the requirement for public business entities to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet, (iv) requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes, (v) requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument‑specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments, (vi) requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or the accompanying notes to the financial statements and (vii) clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available‑for‑sale investments. The Company implemented ASU 2016-01 effective January 1, 2018 with no significant impact to the Company’s consolidated financial statements. ASU 2016‑02, Leases (Topic 842): ASU 2016‑02 will, among other things, require lessees to recognize a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis and a right‑of‑use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. ASU 2016‑02 does not significantly change lease accounting requirements applicable to lessors. Certain changes were made to align, where necessary, lessor accounting with the lessee accounting model and ASC Topic 606, “Revenue from Contracts with Customers.” ASU 2016‑02 will be effective for the Company on January 1, 2019 and will require transition using a modified retrospective approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The Company is currently evaluating the potential impact of ASU 2016‑02 on the consolidated financial statements. ASU 2016‑13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. ASU 2016‑13 requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions and reasonable and supportable forecasts and requires enhanced disclosures related to the significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. In addition, ASU 2016‑13 amends the accounting for credit losses on available‑for‑sale debt securities and purchased financial assets with credit deterioration. ASU 2016‑13 will be effective on January 1, 2020. The Company is currently evaluating the potential impact of ASU 2016‑13 on the consolidated financial statements. ASU 2016‑15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. ASU 2016‑15 provides guidance related to certain cash flow issues in order to reduce the current and potential future diversity in practice. The Company implemented ASU 2016‑15 effective January 1, 2018. The Company has elected to use the nature of distribution approach to determine the nature of distribution approach to determine whether income received from equity investments is operating or investing on the cash flow statement. Based on the previous nature of previous income streams from our equity investments, we expect these amounts will continue to be reported in operating on the cash flow statement and the other items in ASU 2016-15 will be considered if such items arise. ASU 2016‑16, Income Taxes (Topic 740): Intra‑Entity Transfers of Assets Other Than Inventory. ASU 2016‑16 provides guidance stating that an entity should recognize the income tax consequences of an intra‑entity transfer of an asset other than inventory when the transfer occurs. The Company implemented ASU 2016‑16 effective January 1, 2018. As we have not historically transferred assets between entities, we expect no impact on the consolidated financial statements. ASU 2016‑18, Statement of Cash Flows (Topic 230): Restricted Cash. ASU 2016‑18 requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning‑of‑period and end‑of‑period total amounts shown on the statement of cash flows. The Company implemented ASU 2016‑18 effective January 1, 2018. The only cash the Company has considered to be restricted is the amount of our Federal Bank reserves, which we had already included in cash and equivalents in the consolidated financial statements. ASU 2017‑01, Business Combinations (Topic 805): Clarifying the Definition of a Business. ASU 2017‑01 clarifies the definition and provides a more robust framework to use in determining when a set of assets and activities constitutes a business. ASU 2017‑01 is intended to provide guidance when evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The Company implemented ASU 2017‑01 effective January 1, 2018 and will follow this guidance for any future acquisitions or dispositions. ASU 2017‑04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. ASU 2017-04 eliminates Step 2 from the goodwill impairment test. In addition, the amendment eliminates the requirements for any reporting unit with a zero or negative carrying amount to perform a qualitative assessment and, if it fails that qualitative test, to perform Step 2 of the goodwill impairment test. For public companies, ASU 2017‑04 is effective for fiscal years beginning after December 15, 2019, with early adoption permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company is currently evaluating the potential impact of this pronouncement. ASU 2017‑09, Compensation—Stock Compensation (Topic 718): ASU 2017-09 provides guidance about which changes in terms or conditions of a share‑based award require application of modification accounting. The Company implemented ASU 2017‑09 effective January 1, 2018 and will follow this guidance for any future modifications of share-based awards.
Cash Flow Reporting	Cash Flow Reporting—Cash and cash equivalents include cash, interest‑bearing and noninterest‑bearing transaction accounts with other banks and federal funds sold. Generally, federal funds are sold for one‑day periods. Cash flows are reported net for loans, deposits and short-term borrowings.