10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2019

Commission File Number:  001-33912

Enterprise Bancorp, Inc.

(Exact name of registrant as specified in its charter)

Massachusetts	04-3308902
(State or other jurisdiction of	(I.R.S. Employer Identification No.)
incorporation or organization)
222 Merrimack Street, Lowell, Massachusetts	01852
(Address of principal executive offices)	(Zip code)

(978) 459-9000

(Registrant's telephone number, including area code)

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

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.01 par value per share	EBTC	NASDAQ Stock Market

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 period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.     x Yes o No

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted 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 such files).      x Yes o No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See definition for "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act. 

Large accelerated filer o		Accelerated filer x
Non-accelerated filer o	Smaller reporting company o	Emerging growth company o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.     o

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

o Yes x No

As of July 31, 2019, there were 11,804,987 shares of the issuer's common stock outstanding, par value $0.01 per share.

ENTERPRISE BANCORP, INC.

INDEX

		Page Number
	Cover Page	1
	Index	2
	PART I - FINANCIAL INFORMATION
Item 1	Financial Statements (unaudited)	3
	Consolidated Balance Sheets - June 30, 2019 and December 31, 2018	3
	Consolidated Statements of Income - Three and six months ended June 30, 2019 and 2018	4
	Consolidated Statements of Comprehensive Income - Three and six months ended June 30, 2019 and 2018	5
	Consolidated Statement of Changes in Stockholders' Equity - Three and six months ended June 30, 2019 and 2018	6
	Consolidated Statements of Cash Flows - Six months ended June 30, 2019 and 2018	8
	Notes to Unaudited Consolidated Interim Financial Statements	9
Item 2	Management's Discussion and Analysis of Financial Condition and Results of Operations	40
Item 3	Quantitative and Qualitative Disclosures About Market Risk	61
Item 4	Controls and Procedures	61
	PART II - OTHER INFORMATION
Item 1	Legal Proceedings	62
Item 1A	Risk Factors	62
Item 2	Unregistered Sales of Equity Securities and Use of Proceeds	62
Item 3	Defaults Upon Senior Securities	62
Item 4	Mine Safety Disclosures	62
Item 5	Other Information	62
Item 6	Exhibits	63
	Signature page	64

2

PART I-FINANCIAL INFORMATION

Item 1 - Financial Statements

ENTERPRISE BANCORP, INC.

Consolidated Balance Sheets

(Unaudited)

(Dollars in thousands)	June 30, 2019		December 31, 2018
Assets
Cash and cash equivalents:
Cash and due from banks	$	46,918	$	43,865
Interest-earning deposits	139,961		19,255
Total cash and cash equivalents	186,879		63,120
Investments:
Debt securities at fair value	465,944		431,473
Equity securities at fair value	2,428		1,448
Total investment securities at fair value	468,372		432,921
Federal Home Loan Bank ("FHLB") stock	1,576		5,357
Loans held for sale	1,376		701
Loans, less allowance for loan losses of $34,351 at June 30, 2019 and $33,849 at December 31, 2018	2,379,751		2,353,657
Premises and equipment, net	39,575		37,588
Lease right-of-use asset	19,339		—
Accrued interest receivable	12,236		11,462
Deferred income taxes, net	8,711		11,747
Bank-owned life insurance	30,462		30,138
Prepaid income taxes	1,143		732
Prepaid expenses and other assets	12,442		11,279
Goodwill	5,656		5,656
Total assets	$	3,167,518	$	2,964,358
Liabilities and Stockholders' Equity
Liabilities
Deposits:
Customer deposits	$	2,830,148	$	2,507,999
Brokered deposits	—		56,783
Total deposits	2,830,148		2,564,782
Borrowed funds	484		100,492
Subordinated debt	14,866		14,860
Lease liability	18,382		—
Accrued expenses and other liabilities	22,049		27,948
Accrued interest payable	962		979
Total liabilities	2,886,891		2,709,061
Commitments and Contingencies
Stockholders' Equity
Preferred stock, $0.01 par value per share; 1,000,000 shares authorized; no shares issued	—		—
Common stock, $0.01 par value per share; 40,000,000 shares authorized; 11,806,008 shares issued and outstanding at June 30, 2019 and 11,708,218 shares issued and outstanding at December 31, 2018	118		117
Additional paid-in capital	92,767		91,281
Retained earnings	177,880		165,183
Accumulated other comprehensive income (loss)	9,862		(1,284		)
Total stockholders' equity	280,627		255,297
Total liabilities and stockholders' equity	$	3,167,518	$	2,964,358

See the accompanying notes to the unaudited consolidated interim financial statements.

3

ENTERPRISE BANCORP, INC.

Consolidated Statements of Income

(Unaudited)

	Three months ended June 30,				Six months ended June 30,
(Dollars in thousands, except per share data)	2019		2018		2019		2018
Interest and dividend income:
Loans and loans held for sale	$	30,419	$	27,527	$	60,035	$	53,677
Investment securities	3,285		2,606		6,507		5,093
Other interest-earning assets	597		187		1,056		321
Total interest and dividend income	34,301		30,320		67,598		59,091
Interest expense:
Deposits	5,292		2,837		9,998		5,073
Borrowed funds	—		34		279		326
Subordinated debt	231		231		459		459
Total interest expense	5,523		3,102		10,736		5,858
Net interest income	28,778		27,218		56,862		53,233
Provision for loan losses	955		300		555		1,900
Net interest income after provision for loan losses	27,823		26,918		56,307		51,333
Non-interest income:
Wealth management fees	1,371		1,418		2,670		2,826
Deposit and interchange fees	1,687		1,567		3,251		3,056
Income on bank-owned life insurance, net	162		170		324		338
Net gains on sales of investment securities	147		—		146		1
Net gains on sales of loans	69		48		105		132
Other income	604		530		1,380		1,171
Total non-interest income	4,040		3,733		7,876		7,524
Non-interest expense:
Salaries and employee benefits	14,041		13,267		27,512		25,375
Occupancy and equipment expenses	2,096		2,037		4,308		4,194
Technology and telecommunications expenses	1,701		1,639		3,427		3,192
Advertising and public relations expenses	870		1,112		1,585		1,832
Audit, legal and other professional fees	438		419		861		926
Deposit insurance premiums	366		346		717		846
Supplies and postage expenses	262		266		486		498
Other operating expenses	1,979		1,722		3,707		3,392
Total non-interest expense	21,753		20,808		42,603		40,255
Income before income taxes	10,110		9,843		21,580		18,602
Provision for income taxes	2,347		2,269		5,121		4,203
Net income	$	7,763	$	7,574	$	16,459	$	14,399
Basic earnings per share	$	0.66	$	0.65	$	1.40	$	1.24
Diluted earnings per share	$	0.66	$	0.64	$	1.39	$	1.23
Basic weighted average common shares outstanding	11,798,942		11,687,182		11,764,901		11,658,046
Diluted weighted average common shares outstanding	11,834,507		11,764,411		11,808,833		11,733,391

See the accompanying notes to the unaudited consolidated interim financial statements.

4

ENTERPRISE BANCORP, INC.

Consolidated Statements of Comprehensive Income

(Unaudited)

	Three months ended June 30,						Six months ended June 30,
(Dollars in thousands)	2019			2018			2019			2018
Net income	$	7,763		$	7,574		$	16,459		$	14,399
Other comprehensive income (loss), net of taxes:
Gross unrealized holding gains (losses) on investments arising during the period	10,454			(1,035		)	14,494			(9,104		)
Income tax (expense) benefit	(2,327		)	230			(3,234		)	2,035
Net unrealized holding gains (losses), net of tax	8,127			(805		)	11,260			(7,069		)
Less: reclassification adjustment for net gains included in net income
Net realized gains on sales of securities during the period	147			—			146			1
Income tax expense	(32		)	—			(32		)	(1		)
Reclassification adjustment for gains realized, net of tax	115			—			114			—
Total other comprehensive income (loss), net	8,012			(805		)	11,146			(7,069		)
Comprehensive income	$	15,775		$	6,769		$	27,605		$	7,330

See the accompanying notes to the unaudited consolidated interim financial statements.

5

ENTERPRISE BANCORP, INC.

Consolidated Statement of Changes in Stockholders' Equity

(Unaudited)

	Common Stock				Additional Paid-in Capital			Retained Earnings			Accumulated Other Comprehensive Income/(Loss)			Total Stockholders' Equity
(Dollars in thousands)	Shares		Amount
Balance at December 31, 2018	11,708,218		$	117	$	91,281		$	165,183		$	(1,284	)	$	255,297
Net income								8,696						8,696
Other comprehensive income, net											3,134			3,134
Common stock dividend paid ($0.16 per share)								(1,875		)				(1,875		)
Common stock issued under dividend reinvestment plan	9,341		—		298									298
Common stock issued, other	264		—		8									8
Stock-based compensation	62,523		1		598									599
Net settlement for employee taxes on restricted stock and options	(2,741	)	—		(240		)							(240		)
Stock options exercised, net	20,509		—		144									144
Balance at March 31, 2019	11,798,114		118		92,089			172,004			1,850			266,061
Net income								7,763						7,763
Other comprehensive income, net											8,012			8,012
Common stock dividend paid ($0.16 per share)								(1,887		)				(1,887		)
Common stock issued under dividend reinvestment plan	10,503		—		294									294
Common stock issued, other	946		—		28									28
Stock-based compensation	(347	)	—		457									457
Net settlement for employee taxes on restricted stock and options	(3,828	)	—		(113		)							(113		)
Stock options exercised, net	620		—		12									12
Balance at June 30, 2019	11,806,008		$	118	$	92,767		$	177,880		$	9,862		$	280,627

See the accompanying notes to the unaudited consolidated interim financial statements.

6

ENTERPRISE BANCORP, INC.

Consolidated Statement of Changes in Stockholders' Equity (Continued)

(Unaudited)

	Common Stock				Additional Paid-in Capital			Retained Earnings			Accumulated Other Comprehensive Income/(Loss)			Total Stockholders' Equity
(Dollars in thousands)	Shares		Amount
Balance at December 31, 2017	11,609,853		$	116	$	88,205		$	143,073		$	416		$	231,810
Net income								6,825						6,825
Other comprehensive (loss), net											(6,264		)	(6,264		)
Common stock dividend paid ($0.145 per share)								(1,686		)				(1,686		)
Common stock issued under dividend reinvestment plan	12,765		—		397									397
Common stock issued, other	1,138		—		38									38
Stock-based compensation	51,488		1		590									591
Net settlement for employee taxes on restricted stock and options	(7,561	)	—		(286		)							(286		)
Stock options exercised, net	15,231		—		215									215
Balance at March 31, 2018	11,682,914		117		89,159			148,212			(5,848		)	231,640
Net income								7,574						7,574
Other comprehensive (loss), net											(805		)	(805		)
Common stock dividend paid ($0.145 per share)								(1,692		)				(1,692		)
Common stock issued under dividend reinvestment plan	9,885		—		396									396
Common stock issued, other	823		—		30									30
Stock-based compensation	(303	)	—		438									438
Net settlement for employee taxes on restricted stock and options	(1,611	)	—		(76		)							(76		)
Stock options exercised, net	4,496		—		72									72
Balance at June 30, 2018	11,696,204		$	117	$	90,019		$	154,094		$	(6,653	)	$	237,577

See the accompanying notes to the unaudited consolidated interim financial statements.

7

ENTERPRISE BANCORP, INC.

Consolidated Statements of Cash Flows

(Unaudited)

	Six months ended June 30,
(Dollars in thousands)	2019			2018
Cash flows from operating activities:
Net income	$	16,459		$	14,399
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	555			1,900
Depreciation and amortization	2,981			3,434
Stock-based compensation expense	944			885
Income on bank-owned life insurance, net	(324		)	(338		)
Net gains on sales of investment securities	(146		)	(1		)
Mortgage loans originated for sale	(6,207		)	(6,296		)
Proceeds from mortgage loans sold	5,637			5,979
Net gains on sales of loans	(105		)	(132		)
Net fair value (gain) loss on equity securities	(263		)	2
Changes in:
(Increase) decrease in other assets	(5,860		)	473
(Decrease) increase in other liabilities	(309		)	691
Net cash provided by operating activities	13,362			20,996
Cash flows from investing activities:
Proceeds from sales of investment securities	13,623			12,705
Net proceeds from sales of FHLB capital stock	3,781			2,597
Proceeds from maturities, calls and pay-downs of investment securities	22,714			18,331
Purchase of investment securities	(60,592		)	(66,969		)
Net increase in loans	(26,904		)	(28,709		)
Additions to premises and equipment, net	(4,252		)	(3,325		)
Net cash used in investing activities	(51,630		)	(65,370		)
Cash flows from financing activities:
Net increase in deposits	265,366			218,992
Net decrease in borrowed funds	(100,008		)	(88,499		)
Cash dividends paid	(3,762		)	(3,378		)
Proceeds from issuance of common stock, net of expenses	628			861
Net settlement for employee taxes on restricted stock and options	(353		)	(362		)
Proceeds from stock option exercises	156			287
Net cash provided by financing activities	162,027			127,901
Net increase in cash and cash equivalents	123,759			83,527
Cash and cash equivalents at beginning of period	63,120			54,806
Cash and cash equivalents at end of period	$	186,879		$	138,333

See accompanying notes to the unaudited consolidated interim financial statements.

8

ENTERPRISE BANCORP, INC.

Notes to the Unaudited Consolidated Interim Financial Statements

(1) Summary of Significant Accounting Policies

(a) Organization of the Company and Basis of Presentation

The accompanying unaudited consolidated interim financial statements and these notes should be read in conjunction with the December 31, 2018 audited consolidated financial statements and notes thereto contained in the 2018 Annual Report on Form 10-K of Enterprise Bancorp, Inc. as filed with the Securities and Exchange Commission (the "SEC") on March 13, 2019 (the "2018 Annual Report on Form 10-K").  The Company has not materially changed its significant accounting policies from those disclosed in its 2018 Annual Report on Form 10-K. See Item (f) "Recent Accounting Pronouncements" under the subheading "Accounting pronouncements adopted by the Company" below in this Note 1.

The accompanying unaudited consolidated interim financial statements of Enterprise Bancorp, Inc. (the "Company," "Enterprise," "we," or "our"), a Massachusetts corporation, include the accounts of the Company and its wholly owned subsidiary, Enterprise Bank and Trust Company, commonly referred to as Enterprise Bank (the "Bank").  The Bank is a Massachusetts trust company and state chartered commercial bank organized in 1989. Substantially all of the Company's operations are conducted through the Bank and its subsidiaries.

The Bank's subsidiaries include Enterprise Insurance Services, LLC and Enterprise Wealth Services, LLC, both organized under the laws of the State of Delaware, engage in insurance sales activities and offer non-deposit investment products and services, respectively.  In addition, the Bank has the following subsidiaries that are incorporated in the Commonwealth of Massachusetts and classified as security corporations in accordance with applicable Massachusetts General Laws: Enterprise Security Corporation; Enterprise Security Corporation II; and Enterprise Security Corporation III.  The security corporations, which hold various types of qualifying securities, are limited to conducting securities investment activities that the Bank itself would be allowed to conduct under applicable laws.

The Company's headquarters and the Bank's main office are located at 222 Merrimack Street in Lowell, Massachusetts. At June 30, 2019, the Company had 24 full service branch banking offices serving the Greater Merrimack Valley, Nashoba Valley and North Central regions of Massachusetts and Southern New Hampshire (Southern Hillsborough and Rockingham counties). The Company also expects to open branches in Lexington, Massachusetts and North Andover, Massachusetts, pending regulatory approvals, and anticipates that the offices will open in the fall of 2019 and the first half of 2020, respectively. Through the Bank and its subsidiaries, the Company offers a range of commercial, residential and consumer loan products, deposit products and cash management services, electronic and digital banking options, and insurance services.  The Company also provides a range of wealth management, wealth services and trust services delivered via two channels, Enterprise Wealth Management and Enterprise Wealth Services. The services offered through the Bank and its subsidiaries are managed as one strategic unit and represent the Company's only reportable operating segment.

The Federal Deposit Insurance Corporation (the "FDIC") and the Massachusetts Division of Banks (the "Division") have regulatory authority over the Bank.  The Bank is also subject to certain regulatory requirements of the Board of Governors of the Federal Reserve System (the "Federal Reserve Board") and, with respect to its New Hampshire branch operations, the New Hampshire Banking Department.  The business and operations of the Company are subject to the regulatory oversight of the Federal Reserve Board.  The Division also retains supervisory jurisdiction over the Company.

The accompanying unaudited consolidated interim financial statements and notes thereto have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information and the instructions for SEC Form 10-Q through the rules and interpretive releases of the SEC under federal securities law. In the opinion of management, the accompanying unaudited consolidated interim financial statements reflect all necessary adjustments consisting of normal recurring accruals for a fair presentation.  All significant intercompany balances and transactions have been eliminated in the accompanying unaudited consolidated interim financial statements. Certain previous years' amounts in the audited consolidated financial statements, and notes thereto, have been reclassified to conform to the current year's presentation. Interim results are not necessarily indicative of results to be expected for the entire year, or any future period.

The Company has evaluated subsequent events and transactions from June 30, 2019 through the date this Quarterly Report on Form 10-Q (this "Form 10-Q") was filed with the SEC for potential recognition or disclosure as required by GAAP and determined that there were no material subsequent events requiring recognition or disclosure.

9

Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

(b) Uses of Estimates

In preparing the unaudited consolidated interim financial statements in conformity with GAAP, management is required to exercise judgment in determining many of the methodologies, assumptions and estimates to be utilized.  These assumptions and estimates affect the reported values of assets and liabilities as of the balance sheet dates and income and expenses for the period then ended.  As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates should the assumptions and estimates used be incorrect or change over time due to changes in circumstances.  Changes in those estimates resulting from continuing changes in the economic environment and other factors will be reflected in the consolidated financial statements and results of operations in future periods.

As discussed in the Company's 2018 Annual Report on Form 10-K, the three most significant areas in which management applies critical assumptions and estimates are: the estimates of the allowance for loan losses, impairment review of investment securities, and the impairment review of goodwill.  Refer to Note 1, "Summary of Significant Accounting Policies," to the Company's audited consolidated financial statements included in the Company's 2018 Annual Report on Form 10-K for accounting policies related to these significant estimates.

(c) Restricted Cash and Investments

Certain of the Company's derivative agreements contain provisions for collateral to be posted if the derivative exposure exceeds a threshold amount. When the Company has pledged cash as collateral for this purpose, the cash is carried as restricted cash within "Interest-earning Deposits." See Note 8, "Derivatives and Hedging Activities," to the Company's unaudited consolidated interim financial statements below for more information about the Company's collateral related to its derivatives.

The Bank is also required by the Federal Reserve Bank of Boston ("FRB") to maintain in reserves certain amounts of vault cash and/or deposits with the FRB. The average daily cash balance on hand for reserve requirements included in "Cash and Due from Banks" was approximately $8.8 million, based on the two-week computation period encompassing June 30, 2019.

As a member of the FHLB, the Company is required to purchase certain levels of FHLB capital stock at par value in association with outstanding advances from the FHLB.  From time-to-time, the FHLB may initiate the repurchase, at par value, of "excess" levels of its capital stock held by member banks. This stock is classified as a restricted investment and is carried at cost, which management believes approximates fair value.  FHLB stock represents the only restricted investment held by the Company.

Management regularly reviews its holdings of FHLB stock for other-than-temporary impairment ("OTTI"). Based on management's periodic review, the Company has not recorded any OTTI charges on this investment to date. If it was determined that a write-down of FHLB stock was required, impairment would be recognized through a charge to earnings.

See Note 2, "Investment Securities," to the Company's unaudited consolidated interim financial statements below for additional information on management's OTTI review.

(d) Revenue Recognition-Accounting Standard Codification ("ASC") Topic 606

While the majority of the Company's revenue is generated from contracts with customers, our primary sources of revenue, interest and dividend income (primarily loan interest income), are outside of the scope of ASC 606, "Revenue from Contracts with Customers-Topic 606," and are accounted for under other ASC topics. The core principles of this standard require an entity to recognize revenue to depict the transfer of goods and services to customers as performance obligations are satisfied.

The primary areas of income within the scope of ASC 606, wealth management fees and deposit and interchange fees, which are components of non-interest income on the Company's consolidated statements of income, are discussed below.

Wealth management fees consist of income generated through Enterprise Wealth Management and Enterprise Wealth Services. Enterprise Wealth Management income is primarily generated by managing customers' financial assets. Revenue is recognized as our performance obligation is completed each month. Enterprise Wealth Services revenue is generated through a third-party arrangement to refer, manage and service customers. For new sales and referrals along with transactional type charges, the performance obligation is based on a point in time and the payment is received and revenue is recognized in the

10

Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

same month as the revenue-generating activity. For managing and servicing customers, revenue is recognized when our performance obligation is completed each month.

Deposit and interchange fees are comprised of deposit account related charges and income generated from electronic payment interchanges. Deposit account charges consist of certain transactional analysis fees net of earning balance credits, monthly account service fees, and transactional fees such as overdraft fees. Analysis and monthly services fees are recognized over the period the service is performed. For transactional fees, the performance obligation and the revenue are recognized at a point of time and payment is typically received as the service is rendered. Interchange income is generated primarily from retail debit card transactions processed through the card payment network. The performance obligation and the revenue are recognized when the service is performed.

The following non-interest income components are not subject to ASC 606: income on bank-owned life insurance ("BOLI"), net gains/losses on sales of investment securities, and net gains on sales of loans, and are covered under other ASC topics. The remaining revenue items in non-interest income are not material.

See also Note 1, "Summary of Significant Accounting Policies," to the Company's audited consolidated financial statements in the Company's 2018 Annual Report on Form 10-K for additional accounting policies on revenue recognition related to income generated on investments, gains and losses on debt security sales, net gains on loans held for sale, and loans.

(e) Income Taxes

The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction and in the states of Massachusetts and New Hampshire within the directives of the respective enacted tax legislation. The Company uses the asset and liability method of accounting for income taxes.  Under this method, deferred tax assets and liabilities are recognized for the future tax expense or benefit attributable to differences between the financial statement carrying amounts and the tax basis of assets and liabilities.  The deferred tax assets and liabilities are reflected at currently-enacted 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 will be adjusted accordingly through the provision for income taxes in the period that includes the enactment date.

The Company's policy is to classify interest resulting from underpayment of income taxes as income tax expense in the first period the interest would begin accruing according to the provisions of the relevant tax law.  The Company classifies penalties resulting from underpayment of income taxes as income tax expense in the period for which the Company claims or expects to claim an uncertain tax position or in the period in which the Company's judgment changes regarding an uncertain tax position.

The income tax provisions will differ from the expense that would result from applying the federal statutory rate to income before taxes, due primarily to the impact of state tax expense, tax-exempt interest from certain investment securities, loans and BOLI and tax benefits from equity compensation deductions.

The Company did not have any unrecognized tax benefits accrued as income tax liabilities or receivables or as deferred tax items at June 30, 2019.  The Company is subject to U.S. federal and state income tax examinations by taxing authorities for the 2015 through 2018 tax years.

(f) Recent Accounting Pronouncements

The tables below summarize recent accounting pronouncements issued by the Financial Accounting Standards Board("FASB") that were either recently adopted by the Company or have not yet been adopted. For pronouncements not yet adopted, the effective date listed below is in line with the required adoption date for public business entities, such as the Company, though certain accounting pronouncements may permit early adoption. For more detailed information regarding these pronouncements, refer to the FASB's Accounting Standards Updates("ASU").

11

Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

Accounting pronouncements adopted by the company
Standard/Effective Date	Description	Effect on Financial Statements or Other Significant Matters
ASU 2016-02, Leases (ASC Topic 842) January 1, 2019	This ASU supersedes previous leasing guidance in Topic 840, and lessees are now required to recognize lease (right-of-use or "ROU") assets and lease liabilities on the balance sheet for all leases with terms longer than 12 months.	See Note 5, "Leases," to the Company's unaudited consolidated interim financial statements, contained below, for further information on the impact of the standard's adoption on the Company.
ASU 2017-02, Derivatives and Hedging (ASC Topic 815): Targeted Improvements to Accounting for Hedging Activities January 1, 2019	The objective of the ASU is to better align hedge accounting with an organization's risk management activities in the financial statements. In addition, the ASU simplifies the application of hedge accounting guidance in areas where practice issues exist. The amendments expand the strategies that qualify for hedge accounting, change how many hedging relationships are presented in the financial statements and simplify the application of hedge accounting in certain situations, reducing the operational complexities associated with certain existing strategies. New or modified disclosures are required, primarily for fair value and cash flow hedges.	The Company currently does not hold any instruments that meet hedge accounting requirements and therefore the adoption of this ASU in January 2019 did not have an impact on the Company's unaudited consolidated interim financial statements, results of operations or disclosures for the periods covered by the Form 10-Q, however, the Company may utilize hedging strategies in the future.
ASU No. 2018-07, Compensation-Stock-Based Compensation (ASU Topic 718): Improvements to Non-employee Shared-Based Payment Accounting January 1, 2019	The amendments in the ASU expand the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from non-employees except for share-based payments used to effectively provide (1) financing to the issuer or (2) awards granted in conjunction with selling goods or services to customers as part of a contract. Additionally, Topic 718 has been updated for specific guidance on inputs to an option pricing model and the attribution of cost (that is, the period of time over which share-based payment awards vest and the pattern of cost recognition over that period).	The adoption of this standard in January 2019 did not have a material impact on the Company's unaudited consolidated interim financial statements, results of operations or disclosures for the periods covered by the Form 10-Q. See Note 9, "Stockholders' Equity."

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

Accounting pronouncements not yet adopted by the Company
Standard/Effective Date	Description	Effect on Financial Statements or Other Significant Matters
ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments January 1, 2020	The amendments in this ASU require a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. Previously, when credit losses were measured under GAAP, an entity generally only considered past events and current conditions in measuring the incurred loss and generally recognition of the full amount of credit losses was delayed until the loss was probable of occurring. The amendments in this ASU eliminate the probable initial recognition threshold in current GAAP and, instead, reflect an entity's current estimate of all expected credit losses (commonly known as "CECL"). The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the report amount. An entity must use judgment in determining the relevant information and estimation methods that are appropriate in its circumstances. The income statement reflects the measurement of credit losses for newly recognized financial assets, as well as the expected increases or decreases of expected credit losses that have taken place during the period. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. Credit losses on available-for-sale debt securities should be measured in a manner similar to current GAAP. However, the amendments in this ASU require that credit losses be presented as an allowance rather than as a write-down. Unlike current GAAP, the ASU provides for reversals of credit losses in future period net income in situations where the estimate of loss declines. An entity will apply the amendments in this ASU through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective (that is, a modified-retrospective approach).	In December 2018, banking regulators issued a final rule, effective April 1,2019, that addresses the regulatory capital treatment of credit loss allowances under the CECL methodology and allows banking organizations an option to phase in the day-one regulatory capital effects of CECL adoption over three years. The Company has established a project committee and an implementation plan for this ASU. The impact of the adoption of ASU No. 2016-13 on the Company's operations, financial results, disclosures, and controls is under evaluation.
ASU No. 2017-04, Intangibles-Goodwill and Other (ASU Topic 350)- Simplifying the Test for Goodwill Impairment January 1, 2020	The main provision in this ASU eliminated Step 2 of the goodwill impairment test and instead requires an entity to perform its annual, or interim, goodwill impairment test by comparing the fair value of the reporting unit with its carrying amount. An impairment charge would be recognized for the amount the carrying value exceeds the reporting unit's fair value as long as the amount recognized does not exceed the amount of goodwill allocated to the reporting unit.	Goodwill carried on the Company's consolidated financial statements was $5.7 million at both June 30, 2019 and December 31, 2018. This asset is related to the Company’s acquisition of two branch offices in July 2000. The Company does not expect the adoption of ASU No. 2017-04 to have a material impact on the Company's consolidated financial statements and results of operations.

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

Accounting pronouncements not yet adopted by the Company (continued)
Standard/Effective Date	Description	Effect on Financial Statements or Other Significant Matters
ASU No. 2018-13, Fair Value Measurement (ASU Topic 820)-Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement January 1, 2020	The amendments in this ASU modify the disclosure requirements primarily related to level 3 fair value measurements of the fair value hierarchy.	The Company does not expect the adoption of ASU No. 2018-13 to have a material impact on the Company's consolidated financial statements and results of operations because this ASU primarily relates to disclosure requirements.
ASU No.2018-15, Intangible-Goodwill and Other- Internal-Use Software (ASU Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract January 1, 2020	The major provision in the amendments in this ASU require an entity to capitalize certain implementation costs incurred in a hosting arrangement that is a service contract in accordance with current GAAP for internal-use software and expense these costs over the term of the hosting arrangement. Additionally, these capitalized implementation costs are required to be reviewed for impairment in accordance with current GAAP for internal-use software. The amendments in this ASU should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption.	The Company does not expect the adoption of ASU No. 2018-15 to have a material impact on the Company's consolidated financial statements and results of operations.
ASU No. 2018-14, Compensation-Retirement Benefits-Defined Benefit Plans-General (ASU Subtopic 715-20) - Disclosure Framework- Changes to the Disclosure Requirements for Defined Benefit Plans January 1, 2021	The amendments in this ASU modify the disclosure requirements on defined benefit plans including requiring disclosures about significant gains and losses related to changes in the benefit obligation.	The adoption of ASU No. 2018-14 will not have a material impact on the Company's consolidated financial statements and results of operations because this ASU primarily relates to disclosure requirements and the balances of the benefit plans impacted by this ASU are immaterial to the Company.

(2) Investment Securities

As of June 30, 2019, and December 31, 2018, the investment portfolio was primarily comprised of debt securities, with a small portion of the portfolio invested in equity securities.

See also item (c), "Restricted Cash and Investments," contained in Note 1, "Summary of Significant Accounting Policies," to the Company's unaudited consolidated interim financial statements, contained above, for further information regarding the Company's FHLB stock. See Note 13, "Fair Value Measurements," to the Company's unaudited consolidated interim financial statements, contained below, for further information regarding the Company's fair value measurements for investment securities.

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

Debt Securities

The amortized cost and fair values of debt securities at the dates specified are summarized as follows:

	June 30, 2019
(Dollars in thousands)	Amortized cost		Unrealized gains		Unrealized losses		Fair Value
Federal agency obligations(1)	$	998	$	7	$	—	$	1,005
Residential federal agency MBS(1)	170,882		2,165		309		172,738
Commercial federal agency MBS(1)	113,136		3,875		—		117,011
Municipal securities	153,322		6,535		—		159,857
Corporate bonds	13,994		394		5		14,383
Certificate of deposits(2) ("CDs")	950		—		—		950
Total debt securities, at fair value	$	453,282	$	12,976	$	314	$	465,944

	December 31, 2018
(Dollars in thousands)	Amortized cost		Unrealized gains		Unrealized losses		Fair Value
Federal agency obligations(1)	$	7,994	$	—	$	19	$	7,975
Residential federal agency MBS(1)	174,701		633		2,608		172,726
Commercial federal agency MBS(1)	93,800		609		430		93,979
Municipal securities	141,747		1,122		826		142,043
Corporate bonds	13,967		24		185		13,806
Certificates of deposits(2)	950		—		6		944
Total debt securities, at fair value	$	433,159	$	2,388	$	4,074	$	431,473

__________________________________________

(1) These categories may include investments issued or guaranteed by government sponsored enterprises such as Fannie Mae ("FNMA"), Freddie Mac ("FHLMC"), Federal Farm Credit Bank ("FFCB"), or one of several Federal Home Loan Banks, as well as, investments guaranteed by Ginnie Mae ("GNMA"), a wholly-owned government entity. 

(2) CDs represent term deposits issued by banks that are subject to FDIC insurance and purchased on the open market.

Included in the residential and commercial federal agency mortgage-backed securities ("MBS") categories were collateralized mortgage obligations ("CMOs") issued by U.S. agencies with fair values totaling $266.1 million and $242.8 million at June 30, 2019 and December 31, 2018, respectively. Included in municipal securities were tax exempt municipal securities with fair values totaling $100.1 million and $107.3 million at June 30, 2019 and December 31, 2018, respectively.

As of the dates reflected in the tables above, all of the Company's debt securities were classified as available-for-sale and carried at fair value.

Net unrealized appreciation and depreciation on debt securities available-for-sale, net of applicable income taxes, are reflected as a component of accumulated other comprehensive income (loss). The net unrealized gain or loss in the Company's debt security portfolio fluctuates as market interest rates rise and fall.  Due to the fixed rate nature of this portfolio, as market rates fall, the value of the portfolio rises, and as market rates rise, the value of the portfolio declines.  The unrealized gains or losses on debt securities will also decline as the securities approach maturity. Unrealized losses on debt securities that are deemed OTTI are generally charged to earnings, as described further in Note 1, "Summary of Significant Accounting Policies," under Item (e), "Investments," to the Company's audited consolidated financial statements contained in the Company's 2018 Annual Report on Form 10-K. Gains or losses will be recognized in the income statement if the securities are sold.

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

The following tables summarize debt securities with unrealized losses, due to the fair values having declined below the amortized costs of the individual investments, by the duration of their continuous unrealized loss positions at June 30, 2019 and December 31, 2018: 

	June 30, 2019
	Less than 12 months				12 months or longer				Total
(Dollars in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		# of holdings
Residential federal agency MBS	$	7,418	$	38	$	35,726	$	271	$	43,144	$	309	11
Corporate bonds	—		—		1,330		5		1,330		5		9
Total temporarily impaired debt securities	$	7,418	$	38	$	37,056	$	276	$	44,474	$	314	20

	December 31, 2018
	Less than 12 months				12 months or longer				Total
(Dollars in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		# of holdings
Federal agency obligations	$	997	$	1	$	6,978	$	18	$	7,975	$	19	3
Residential federal agency MBS	26,147		597		81,158		2,011		107,305		2,608		25
Commercial federal agency MBS	3,258		11		18,717		419		21,975		430		9
Municipal securities	15,036		108		41,265		718		56,301		826		83
Corporate bonds	5,277		36		5,653		149		10,930		185		63
CDs	—		—		944		6		944		6		4
Total temporarily impaired debt securities	$	50,715	$	753	$	154,715	$	3,321	$	205,430	$	4,074	187

During the six months endedJune 30, 2019 and 2018, the Company did not record any fair value impairment charges OTTI on its investments in debt securities. At June 30, 2019, management did not consider any debt securities to have OTTI. Management regularly reviews the portfolio for debt securities with unrealized losses that are other-than-temporarily impaired. There have been no material changes to the Company's process for assessing investments for OTTI as reported in the Company's 2018 Annual Report on Form 10-K. For more information about the Company's assessment for OTTI, see Note 2, "Investment Securities," to the Company's audited consolidated financial statements contained in the Company's 2018 Annual Report on Form 10-K.

The contractual maturity distribution at June 30, 2019 of total debt securities was as follows:

(Dollars in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	4,248	$	4,259
Due after one, but within five years	67,469		69,232
Due after five, but within ten years	175,094		182,596
Due after ten years	206,471		209,857
Total debt securities	$	453,282	$	465,944

Scheduled contractual maturities shown above may not reflect the actual maturities of the investments. The actual MBS/CMO cash flows likely will be faster than presented above due to prepayments and amortization. Similarly, included in the table above are callable securities, comprised of municipal securities and corporate bonds, with a fair value of $86.1 million, which can be redeemed by the issuers prior to the maturity presented above.  Management considers these factors when evaluating the interest-rate risk in the Company's asset-liability management program.

From time to time, the Company may pledge debt securities as collateral for deposit account balances of municipal customers, and for borrowing capacity with the FHLB and the FRB.  The fair value of debt securities pledged as collateral for these purposes was $461.4 million at June 30, 2019.

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

Sales of debt securities for the three and six months endedJune 30, 2019 and June 30, 2018 are summarized as follows:

	Three months ended June 30,				Six months ended June 30,
(Dollars in thousands)	2019		2018		2019			2018
Amortized cost of debt securities sold (1)	$	9,828	$	—	$	11,621		$	668
Gross realized gains on sales	147		—		149			3
Gross realized losses on sales	—		—		(3		)	(2		)
Total proceeds from sales of debt securities	$	9,975	$	—	$	11,767		$	669

_________________________________________

(1) Amortized cost of investments sold is determined on a specific identification basis and includes pending trades based on trade date, if applicable.

Equity Securities

The Company held equity securities with a fair value of $2.4 million as of June 30, 2019, compared to fair value of $1.4 million at December 31, 2018. These investments are accounted for under ASC Topic 321, "Investments-Equity Securities," and are recorded on the Company's consolidated balance sheet at fair value with changes in fair value recognized in net income. At June 30, 2019, the equity portfolio consisted primarily of investments in a diversified group of mutual funds, with a portion of the portfolio invested in individual common stock of entities in the financial services industry. There were no sales of equity securities in either the three or six months ended months ended June 30, 2019 or June 30, 2018.

During the three and six months endedJune 30, 2019, the net fair value gain on equity securities recorded in the Other Income line of the Company's consolidated statement of income was $77 thousand and $263 thousand, respectively, while during the three and six months endedJune 30, 2018, the related fair value gain/(loss) on equity securities was immaterial. The net fair value changes of equity securities that will be recognized in net income in the future will depend on the amount of dollars invested in equities and the magnitude of changes in equity fair values.

(3) Loans

The Company specializes in lending to business entities, non-profit organizations, professional practices and individuals. The Company's primary lending focus is on the development of high-quality commercial relationships achieved through active business development efforts, long-term relationships with established commercial developers, strong community involvement and focused marketing strategies.  Loans made to business entities, non-profit organizations, and professional practices may include commercial mortgage loans, construction and land development loans, secured and unsecured commercial loans and lines of credit, and letters of credit.  The Company also originates equipment lease financing for business entities. Loans made to individuals include conventional residential mortgage loans, home equity loans and lines, residential construction loans on owner-occupied primary and secondary residences, and secured and unsecured personal loans and lines of credit. The Company manages its loan portfolio to avoid concentration by industry, relationship size and source of repayment to lessen its credit risk exposure. For additional information on the Company's lending products, see the heading "Lending Products" under Item 1, "Business," contained in the Company's 2018 Annual Report on Form 10-K.

See also Note 4, "Allowance for Loan Losses," to the Company's unaudited consolidated interim financial statements, contained below, for information on the Company's credit risk management, non-accrual, impaired and troubled debt restructured loans and the allowance for loan losses. See Note 8, "Derivatives and Hedging Activities," to the Company's unaudited consolidated interim financial statements, contained below, for information regarding interest-rate swap agreements related to certain commercial loans, and see Note 13, "Fair Value Measurements," to the Company's unaudited consolidated interim financial statements, contained below, for further information regarding the Company's fair value measurements for loans.

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

Loan Portfolio Classifications

Major classifications of loans at the dates indicated were as follows:

(Dollars in thousands)	June 30, 2019			December 31, 2018
Commercial real estate	$	1,294,509		$	1,303,879
Commercial and industrial	514,402			514,253
Commercial construction	264,484			234,430
Total commercial loans	2,073,395			2,052,562
Residential mortgages	235,392			231,501
Home equity loans and lines	97,994			96,116
Consumer	10,208			10,241
Total retail loans	343,594			337,858
Gross loans	2,416,989			2,390,420
Deferred loan origination fees, net	(2,887		)	(2,914		)
Total loans	2,414,102			2,387,506
Allowance for loan losses	(34,351		)	(33,849		)
Net loans	$	2,379,751		$	2,353,657

Commercial loans originated by other banks in which the Company is a participating institution are carried at the pro-rata share of ownership and amounted to $69.0 million at June 30, 2019 and $63.5 million at December 31, 2018.

Loans serviced for others

At June 30, 2019 and December 31, 2018, the Company was servicing residential mortgage loans owned by investors amounting to $16.7 million and $17.2 million, respectively.  Additionally, the Company was servicing commercial loans originated by the Company and participated out to various other institutions amounting to $70.0 million and $72.1 million at June 30, 2019 and December 31, 2018, respectively.

Loans serving as collateral

Loans designated as qualified collateral and pledged to the FHLB for borrowing capacity for the dates indicated are summarized below:

(Dollars in thousands)	June 30, 2019		December 31, 2018
Commercial real estate	$	291,748	$	311,024
Residential mortgages	222,234		220,815
Home equity lines of credit	7,940		8,382
Total loans pledged to FHLB	$	521,922	$	540,221

(4)Allowance for Loan Losses

Allowance for probable loan losses methodology

On a quarterly basis, management prepares an estimate of the allowance necessary to cover estimated probable credit losses.  The Company uses a systematic methodology to measure the amount of estimated loan loss exposure inherent in the portfolio for purposes of establishing a sufficient allowance for loan losses.  The methodology makes use of specific reserves for loans individually evaluated and deemed impaired, and general reserves for larger pools of homogeneous loans, which are collectively evaluated relying on a combination of qualitative and quantitative factors that may affect credit quality of the pool.

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

There have been no material changes to the Company's underwriting practices, credit risk management system, or to the allowance assessment methodology used to estimate loan loss exposure as reported in Note 4, "Allowance for Loan Losses," to the Company's audited consolidated financial statements contained in the Company's 2018 Annual Report on Form 10-K,

The balances of loans as of June 30, 2019 by portfolio classification and evaluation method are summarized as follows: 

(Dollars in thousands)	Loans individually evaluated for impairment		Loans collectively evaluated for impairment		Gross Loans
Commercial real estate	$	16,906	$	1,277,603	$	1,294,509
Commercial and industrial	11,042		503,360		514,402
Commercial construction	1,723		262,761		264,484
Residential mortgages	934		234,458		235,392
Home equity loans and lines	432		97,562		97,994
Consumer	32		10,176		10,208
Total gross loans	$	31,069	$	2,385,920	$	2,416,989

The balances of loans as of December 31, 2018 by portfolio classification and evaluation method are summarized as follows:

(Dollars in thousands)	Loans individually evaluated for impairment		Loans collectively evaluated for impairment		Gross Loans
Commercial real estate	$	16,318	$	1,287,561	$	1,303,879
Commercial and industrial	12,053		502,200		514,253
Commercial construction	1,736		232,694		234,430
Residential mortgages	893		230,608		231,501
Home equity loans and lines	514		95,602		96,116
Consumer	16		10,225		10,241
Total gross loans	$	31,530	$	2,358,890	$	2,390,420

See "Financial Condition" in Item 2, "Management's Discussion and Analysis," under the headings "Credit Risk" and "Allowance for Loan Losses" in this Form 10-Q for additional information about changes in the Company's credit quality indicators since December 31, 2018.

Credit quality indicators

Early detection of credit issues is critical to minimize credit losses. Accordingly, management regularly monitors internal credit quality indicators such as, among others, the risk classification of adversely classified loans, past due and non-accrual loans, impaired and restructured loans, and the level of foreclosure activity. These credit quality indicators are discussed below.

Adversely classified loans

The Company's loan risk rating system classifies loans depending on risk of loss characteristics. The classifications range from "substantially risk free" for the highest quality loans and loans that are secured by cash collateral, through a satisfactory range of "minimal," "moderate," "better than average," and "average" risk, to the regulatory problem-asset classifications of "criticized," for loans that may need additional monitoring, and the more severe adverse classifications of "substandard," "doubtful," and "loss" based on criteria established under banking regulations. Loans which are evaluated to be of weaker credit quality are placed on the "watch credit list" and reviewed on a more frequent basis by management.

Adversely classified loans may be accruing or in non-accrual status and may be additionally designated as impaired or restructured, or some combination thereof. 

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

The following tables present the Company's credit risk profile for each portfolio classification by internally assigned adverse risk rating category as of the periods indicated:

	June 30, 2019
	Adversely Classified						Not Adversely
(Dollars in thousands)	Substandard		Doubtful		Loss		Classified		Gross Loans
Commercial real estate	$	17,152	$	—	$	—	$	1,277,357	$	1,294,509
Commercial and industrial	12,577		—		44		501,781		514,402
Commercial construction	2,240		—		—		262,244		264,484
Residential mortgages	1,849		—		—		233,543		235,392
Home equity loans and lines	478		—		—		97,516		97,994
Consumer	40		12		—		10,156		10,208
Total gross loans	$	34,336	$	12	$	44	$	2,382,597	$	2,416,989

	December 31, 2018
	Adversely Classified						Not Adversely
(Dollars in thousands)	Substandard		Doubtful		Loss		Classified		Gross Loans
Commercial real estate	$	17,714	$	240	$	—	$	1,285,925	$	1,303,879
Commercial and industrial	12,821		—		—		501,432		514,253
Commercial construction	2,262		—		—		232,168		234,430
Residential mortgages	1,820		—		—		229,681		231,501
Home equity loans and lines	561		—		—		95,555		96,116
Consumer	35		8		—		10,198		10,241
Total gross loans	$	35,213	$	248	$	—	$	2,354,959	$	2,390,420

Total adversely classified loans amounted to 1.42% of total loans at June 30, 2019, as compared to 1.49% at December 31, 2018.

Past due and non-accrual loans

 The following tables present an age analysis of past due loans by portfolio classification as of the dates indicated:

	Balance at June 30, 2019
(Dollars in thousands)	30-59 Days Past Due		60-89 Days Past Due		Past Due 90 days or more		Total Past Due Loans		Current Loans		Gross Loans		Non-accrual Loans
Commercial real estate	$	4,030	$	393	$	3,449	$	7,872	$	1,286,637	$	1,294,509	$	6,602
Commercial and industrial	797		604		1,073		2,474		511,928		514,402		4,049
Commercial construction	4,731		460		—		5,191		259,293		264,484		123
Residential mortgages	1,617		312		—		1,929		233,463		235,392		745
Home equity loans and lines	77		177		—		254		97,740		97,994		432
Consumer	35		10		17		62		10,146		10,208		27
Total gross loans	$	11,287	$	1,956	$	4,539	$	17,782	$	2,399,207	$	2,416,989	$	11,978

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

	Balance at December 31, 2018
(Dollars in thousands)	30-59 Days Past Due		60-89 Days Past Due		Past Due 90 days or more		Total Past Due Loans		Current Loans		Gross Loans		Non-accrual Loans
Commercial real estate	$	7,596	$	21	$	3,821	$	11,438	$	1,292,441	$	1,303,879	$	6,894
Commercial and industrial	619		17		2,299		2,935		511,318		514,253		3,417
Commercial construction	4,319		—		—		4,319		230,111		234,430		176
Residential mortgages	114		—		377		491		231,010		231,501		763
Home equity loans and lines	14		168		209		391		95,725		96,116		514
Consumer	23		31		6		60		10,181		10,241		20
Total gross loans	$	12,685	$	237	$	6,712	$	19,634	$	2,370,786	$	2,390,420	$	11,784

At June 30, 2019 and December 31, 2018, all loans past due 90 days or more were carried as non-accrual, in addition to those loans that were less than 90 days past due where reasonable doubt existed as to the full and timely collection of interest or principal that have also been designated as non-accrual, despite their payment due status shown in the tables above.

Non-accrual loans that were not adversely classified amounted to $33 thousand at June 30, 2019 and $81 thousand at December 31, 2018. These balances primarily represented the guaranteed portions of non-performing SBA loans. The majority of the non-accrual loan balances were also carried as impaired loans during the periods noted and are discussed further below.

The ratio of non-accrual loans to total loans amounted to 0.50% at June 30, 2019 and 0.49% at December 31, 2018.

At June 30, 2019, additional funding commitments for non-accrual loans were not material.

Impaired loans

Impaired loans are individually significant loans for which management considers it probable that not all amounts due (principal and interest) will be collected in accordance with the original contractual terms. Impaired loans include loans that have been modified in a troubled debt restructuring ("TDR"), see "Troubled debt restructurings" below. Impaired loans are individually evaluated and exclude large groups of smaller-balance homogeneous loans, such as residential mortgage loans and consumer loans, which are collectively evaluated for impairment, and loans that are measured at fair value, unless the loan is amended in a TDR. 

The carrying value of impaired loans amounted to $31.1 million and $31.5 million at June 30, 2019 and December 31, 2018, respectively.  Total accruing impaired loans amounted to $19.1 million and $19.7 million at June 30, 2019 and December 31, 2018, respectively, while non-accrual impaired loans amounted to approximately $12.0 million and $11.8 million as of June 30, 2019 and December 31, 2018, respectively.

The following tables set forth the recorded investment in impaired loans and the related specific allowance allocated by portfolio classification as of the dates indicated:

	Balance at June 30, 2019
(Dollars in thousands)	Unpaid contractual principal balance		Total recorded investment in impaired loans		Recorded investment with no allowance		Recorded investment with allowance		Related specific allowance
Commercial real estate	$	17,800	$	16,906	$	16,739	$	167	$	5
Commercial and industrial	11,575		11,042		7,403		3,639		2,307
Commercial construction	1,800		1,723		1,723		—		—
Residential mortgages	1,024		934		518		416		5
Home equity loans and lines	614		432		432		—		—
Consumer	32		32		—		32		32
Total	$	32,845	$	31,069	$	26,815	$	4,254	$	2,349

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	Balance at December 31, 2018
(Dollars in thousands)	Unpaid contractual principal  balance		Total recorded investment in impaired loans		Recorded investment with no allowance		Recorded investment with allowance		Related specific allowance
Commercial real estate	$	17,140	$	16,318	$	15,948	$	370	$	55
Commercial and industrial	12,538		12,053		7,752		4,301		2,140
Commercial construction	1,804		1,736		1,736		—		—
Residential mortgages	970		893		473		420		13
Home equity loans and lines	685		514		514		—		—
Consumer	16		16		—		16		16
Total	$	33,153	$	31,530	$	26,423	$	5,107	$	2,224

The following table presents the average recorded investment in impaired loans by portfolio classification and the related interest recognized during the three months indicated:

	Three months ended June 30, 2019					Three months ended June 30, 2018
(Dollars in thousands)	Average recorded investment		Interest income recognized			Average recorded investment		Interest income recognized
Commercial real estate	$	16,425	$	122		$	13,506	$	95
Commercial and industrial	11,474		94			11,601		89
Commercial construction	1,738		27			1,676		23
Residential mortgages	939		17			644		1
Home equity loans and lines	436		—			499		—
Consumer	24		(1		)	66		—
Total	$	31,036	$	259		$	27,992	$	208

The following table presents the average recorded investment in impaired loans by portfolio classification and the related interest recognized during the six months indicated:

	Six months ended June 30, 2019					Six months ended June 30, 2018
(Dollars in thousands)	Average recorded investment		Interest income recognized			Average recorded investment		Interest income recognized
Commercial real estate	$	16,114	$	242		$	13,611	$	189
Commercial and industrial	11,696		209			11,124		166
Commercial construction	1,736		52			1,656		45
Residential mortgages	914		18			629		—
Home equity loans and lines	472		—			487		—
Consumer	21		(1		)	49		—
Total	$	30,953	$	520		$	27,556	$	400

At June 30, 2019, additional funding commitments for impaired loans were not material. The Company's obligation to fulfill the additional funding commitments on impaired loans is generally contingent on the borrower's compliance with the terms of the credit agreement. If the borrower is not in compliance, additional funding commitments may or may not be made at the Company's discretion.

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Troubled debt restructurings

Loans are designated as a TDR when, as part of an agreement to modify the original contractual terms of the loan as a result of financial difficulties of the borrower, the Bank grants the borrower a concession on the terms that would not otherwise be considered.  Typically, such concessions may consist of one or a combination of the following: a reduction in interest rate to a below market rate, taking into account the credit quality of the note; extension of additional credit based on receipt of adequate collateral; or a deferment or reduction of payments (principal or interest) which materially alters the Bank's position or significantly extends the note's maturity date, such that the present value of cash flows to be received is materially less than those contractually established at the loan's origination. All loans that are modified are reviewed by the Company to identify if a TDR has occurred. TDR loans are included in the impaired loan category and, as such, these loans are individually reviewed and evaluated, and a specific reserve is assigned for the amount of the estimated probable credit loss. 

Total TDR loans, included in the impaired loan balances above, as of June 30, 2019 and December 31, 2018, were $24.6 million and $23.1 million, respectively. TDR loans on accrual status amounted to $19.1 million and $19.4 million at June 30, 2019 and December 31, 2018, respectively. TDR loans included in non-performing loans amounted to $5.5 million at June 30, 2019 and $3.7 million at December 31, 2018. The Company continues to work with customers and enters into loan modifications (which may or may not be TDRs) to the extent deemed to be necessary or appropriate while attempting to achieve the best mutual outcome given the individual financial circumstances and future prospects of the borrower.

At June 30, 2019, additional funding commitments for TDR loans were not material.

The following table sets forth the post modification balances of TDRs listed by type of modification for TDRs that occurred during the periods indicated:

	Six months ended
	June 30, 2019			June 30, 2018
(Dollars in thousands)	Number of restructurings	Amount		Number of restructurings	Amount
Temporary payment reduction and payment re-amortization of remaining principal over extended term	7	$	89	5	$	222
Temporary interest only payment plan	2	395		2	148
Other payment concessions	3	1,759		1	12
Total	12	$	2,243	8	$	382
Amount of specific reserves included in the allowance for loan losses associated with TDRs listed above		$	89		$	73

Loans modified as TDRs during the three months ended June 30, 2019 and June 30, 2018 are detailed below:

	Three months ended
	June 30, 2019					June 30, 2018
(Dollars in thousands)	Number of restructurings	Pre-modification outstanding recorded investment		Post-modification outstanding recorded investment		Number of restructurings	Pre-modification outstanding recorded investment		Post-modification outstanding recorded investment
Commercial real estate	2	$	1,626	$	1,626	—	$	—	$	—
Commercial and industrial	2	212		216		2	20		17
Commercial construction	—	—		—		—	—		—
Residential mortgages	—	—		—		—	—		—
Home equity loans and lines	—	—		—		2	112		104
Consumer	1	6		6		—	—		—
Total	5	$	1,844	$	1,848	4	$	132	$	121

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There were no payment defaults during the three months ended June 30, 2019. Payment defaults, during the three months ended June 30, 2018 on loans modified as TDRs within the preceding twelve months are detailed below:

	Three months ended
	June 30, 2018
(Dollars in thousands)	Number of TDRs that defaulted	Post- modification outstanding recorded investment
Commercial real estate	—	$	—
Commercial and industrial	1	73
Commercial construction	—	—
Residential mortgages	—	—
Home equity loans and lines	1	12
Consumer	—	—
Total	2	$	85

Loans modified as TDRs during the six months ended June 30, 2019 and June 30, 2018 by portfolio classification are detailed below:

	Six months ended
	June 30, 2019					June 30, 2018
(Dollars in thousands)	Number of restructurings	Pre-modification outstanding recorded investment		Post-modification outstanding recorded investment		Number of restructurings	Pre-modification outstanding recorded investment		Post-modification outstanding recorded investment
Commercial real estate	3	$	2,047	$	1,626	2	$	131	$	148
Commercial and industrial	7	406		299		4	162		130
Commercial construction	—	—		—		—	—		—
Residential mortgages	1	315		312		—	—		—
Home equity loans and lines	—	—		—		2	112		104
Consumer	1	6		6		—	—		—
Total	12	$	2,774	$	2,243	8	$	405	$	382

There were no subsequent charge-offs associated with the new TDRs noted in the table above during the six months endedJune 30, 2019. Subsequent charge-offs associated with the new TDRs noted in the table above during the six months endedJune 30, 2018 were immaterial.

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Payment defaults by portfolio classification during the six months ended June 30, 2019 and June 30, 2018, on loans modified as TDRs within the preceding twelve months are detailed below:

	Six months ended
	June 30, 2019			June 30, 2018
(Dollars in thousands)	Number of TDRs that defaulted	Post- modification outstanding recorded investment		Number of TDRs that defaulted	Post- modification outstanding recorded investment
Commercial real estate	—	$	—	—	$	—
Commercial and industrial	2	172		1	73
Commercial construction	—	—		—	—
Residential mortgages	—	—		—	—
Home equity loans and lines	—	—		1	12
Consumer	—	—		—	—
Total	2	$	172	2	$	85

Other real estate owned ("OREO")

Real estate acquired by the Company through foreclosure proceedings or the acceptance of a deed in lieu of foreclosure is classified as OREO. When property is acquired, it is recorded at estimated fair value of the property acquired, less estimated costs to sell, establishing a new cost basis and carried on the consolidated balance sheet in the line item "Prepaid expenses and other assets." The estimated fair value is based on market appraisals and the Company’s internal analysis. Any loan balance in excess of the estimated realizable fair value on the date of transfer is charged to the allowance for loan losses on that date. All costs incurred thereafter in maintaining the property, as well as subsequent declines in fair value are charged to non-interest expense.

The carrying value of OREO at June 30, 2019 was $255 thousand and consisted of one property added during the six months endedJune 30, 2019, compared to no OREO at December 31, 2018 or June 30, 2018. There were no OREO sales or write downs during the six months endedJune 30, 2019 or June 30, 2018.

At both June 30, 2019 and December 31, 2018, the Company had no consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process according to local requirements of the applicable jurisdictions.

Allowance for loan loss activity

The allowance for loan losses is an estimate of probable credit losses inherent in the loan portfolio as of the specified balance sheet dates. On a quarterly basis, management prepares an estimate of the allowance necessary to cover estimated probable credit losses.  The Company maintains the allowance at a level that it deems adequate to absorb all reasonably anticipated probable losses from specifically known and other credit risks associated with the portfolio. The allowance for loan losses is established through a provision for loan losses, a direct charge to earnings.  Loan losses are charged against the allowance when management believes that the collectability of the loan principal is unlikely.  Recoveries on loans previously charged-off are credited to the allowance.

The allowance for loan losses amounted to $34.4 million at June 30, 2019, compared to $33.8 million at December 31, 2018, and $34.8 million at June 30, 2018. The allowance for loan losses to total loans ratio was 1.42% at both June 30, 2019 and December 31, 2018 and 1.51% at June 30, 2018. Based on management's judgment as to the existing credit risks inherent in the loan portfolio, as discussed above under the heading "Credit Quality Indicators," management believes that the Company's allowance for loan losses is adequate to absorb probable losses from specifically known and other probable credit risks associated with the portfolio as of June 30, 2019.

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Changes in the allowance for loan losses by portfolio segment for the three months ended June 30, 2019 are presented below: 

(Dollars in thousands)	Cmml Real Estate		Cmml and Industrial		Cmml Constr		Resid. Mortgage		Home Equity			Consumer		Total
Beginning Balance at March 31, 2019	$	17,826	$	10,403	$	3,452	$	1,184	$	627		$	237	$	33,729
Provision	2		647		265		3		(1		)	39		955
Recoveries	—		140		—		—		3			8		151
Less: Charge offs	—		459		—		—		—			25		484
Ending Balance at June 30, 2019	$	17,828	$	10,731	$	3,717	$	1,187	$	629		$	259	$	34,351

Changes in the allowance for loan losses by portfolio classification for the six months endedJune 30, 2019 are presented below: 

(Dollars in thousands)	Cmml Real Estate			Cmml and Industrial		Cmml Constr		Resid. Mortgage		Home Equity			Consumer		Total
Beginning Balance at December 31, 2018	$	18,014		$	10,493	$	3,307	$	1,160	$	629		$	246	$	33,849
Provision	(186		)	241		410		27		(5		)	68		555
Recoveries	—			456		—		—		5			13		474
Less: Charge offs	—			459		—		—		—			68		527
Ending Balance at June 30, 2019	$	17,828		$	10,731	$	3,717	$	1,187	$	629		$	259	$	34,351
Ending allowance balance:
Allocated to loans individually evaluated for impairment	$	5		$	2,307	$	—	$	5	$	—		$	32	$	2,349
Allocated to loans collectively evaluated for impairment	$	17,823		$	8,424	$	3,717	$	1,182	$	629		$	227	$	32,002

Changes in the allowance for loan losses by portfolio segment for the three months ended June 30, 2018 are presented below:

(Dollars in thousands)	Cmml Real Estate		Cmml and Industrial			Cmml Constr		Resid. Mortgage		Home Equity		Consumer			Total
Beginning Balance at March 31, 2018	$	18,300	$	11,171		$	3,283	$	914	$	629	$	227		$	34,524
Provision	114		(109		)	261		25		16		(7		)	300
Recoveries	—		57			—		—		—		12			69
Less: Charge offs	—		76			—		—		—		20			96
Ending Balance at June 30, 2018	$	18,414	$	11,043		$	3,544	$	939	$	645	$	212		$	34,797

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Changes in the allowance for loan losses by portfolio classification for the six months endedJune 30, 2018 are presented below: 

(Dollars in thousands)	Cmml Real Estate		Cmml and Industrial		Cmml Constr			Resid. Mortgage		Home Equity		Consumer		Total
Beginning Balance at December 31, 2017	$	17,545	$	9,669	$	3,947		$	904	$	608	$	242	$	32,915
Provision	869		1,326		(403		)	35		36		37		1,900
Recoveries	—		165		—			—		1		17		183
Less: Charge offs	—		117		—			—		—		84		201
Ending Balance at June 30, 2018	$	18,414	$	11,043	$	3,544		$	939	$	645	$	212	$	34,797
Ending allowance balance:
Allocated to loans individually evaluated for impairment	$	42	$	2,621	$	—		$	3	$	—	$	17	$	2,683
Allocated to loans collectively evaluated for impairment	$	18,372	$	8,422	$	3,544		$	936	$	645	$	195	$	32,114

(5)Leases

As of June 30, 2019, the Company had 16 operating real estate leases. The Company's leased facilities are contracted under various non-cancelable operating leases, most of which provide options to the Company to extend the lease periods and include periodic rent adjustments. While the Company typically exercises its option to extend lease terms, the lease contains provisions that allow the Company, upon notification, to terminate the lease at the end of the lease term, or any option period. Several leases also provide the Company the right of first refusal should the property be offered for sale or purchase options at specified periods mutually agreeable to the parties.  As of June 30, 2019, the Company had an agreement to purchase one of the leased buildings in its main campus; the transaction was finalized in July 2019.

On January 1, 2019, the Company adopted ASU No. 2016-02, "Leases (Topic 842)." Under this ASU, as amended, lessees are required to recognize lease ROU assets and lease liabilities on the balance sheet for all leases with terms longer than 12 months. The lease liability represents the present value of the future lease payments. The ROU asset includes the lease liability, lease prepayments and indirect costs, less accrued lease liabilities. For the Company, this ASU primarily impacted operating leases on our facilities, mainly branch leases, and as a result the Company recorded, on its consolidated balance sheet a lease liability of $18.0 million and ROU asset of $19.0 million on January 1, 2019 related to these leases.

Upon adoption of this ASU, the Company elected the following practical expedients:

• to not reassess, among other things, the historical lease classification, and

• to use hindsight to assess lease terms and impairment of the ROU asset.

The Company excludes leases with a term of 12 months or less from the recorded lease liability and ROU asset and accounts for lease and non-lease components separately. In order to calculate the lease liability, the Company used its incremental borrowing rate as the discount rate to determine the net present value of the lease liability. In determining the term of a lease, the Company included options renewal periods that it considered reasonably certain to exercise, which generally resulted in the inclusion of all lease option periods.

The Company recognizes lease expense on a straight-line basis in the "Occupancy and Equipment Expenses" line item within the non-interest expense section of the consolidated income statement. Lease expenses, consisting of operating lease costs and variable lease costs, for the three and six months endedJune 30, 2019 were $373 thousand and $707 thousand, respectively. Variable lease costs and short-term lease expenses during this period were immaterial.

The weighted average remaining lease term for operating leases at June 30, 2019 was 27.7 years, and the weighted average discount rate was 3.79%.

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At June 30, 2019, the remaining undiscounted cash flows by year of these lease liabilities were as follows:

(Dollars in thousands)	Operating Leases
2019 (six remaining months)	$	629
2020	1,242
2021	1,242
2022	1,245
2023	1,252
Thereafter	24,599
Total lease payments	$	30,209
Less: Imputed interest	11,827
Total lease liability	$	18,382

In addition, the Company currently collects rent through non-cancellable leases for a small portion of the overall square-footage within its Lowell, Massachusetts campus headquarters and at one of its branch locations. These leases are deemed immaterial.

(6) Deposits

Deposits are summarized as follows:

(Dollars in thousands)	June 30, 2019		December 31, 2018
Non-interest checking	$	822,455	$	765,029
Interest-bearing checking	496,828		403,497
Savings	209,477		193,214
Money market	1,006,526		862,028
CDs $250,000 or less	222,879		215,200
CDs greater than $250,000	71,983		69,031
Total customer deposits	2,830,148		2,507,999
Brokered deposits (1)	—		56,783
Total deposits	$	2,830,148	$	2,564,782

___________________________________

(1) Brokered CDs which are $250,000 and under.

Total customer deposits include reciprocal balances from checking, money market deposits and CDs received from participating banks in nationwide deposit networks as a result of our customers electing to participate in Company offered programs which allow for enhanced FDIC insurance. Essentially, the equivalent of the customers' original deposited funds comes back to the Company and are carried within the appropriate category under total customer deposits. The Company's balances in these reciprocal products were $412.0 million and $342.4 million at June 30, 2019 and December 31, 2018, respectively.

See Note 13, "Fair Value Measurements," to the Company's unaudited consolidated interim financial statements, contained below, for further information regarding the Company's fair value measurements for deposits.

(7) Borrowed Funds and Subordinated Debt

The Company had $484 thousand in borrowed funds at June 30, 2019 linked to outstanding commercial loans under various community reinvestment programs of the FHLB. At December 31, 2018, borrowed funds consisted of FHLB borrowings amounting to $100.5 million.

The Company had outstanding subordinated debt (net of deferred issuance costs) of $14.9 million at both June 30, 2019 and December 31, 2018, which consisted of $15.0 million in aggregate principal amount of Fixed-to-Floating Rate Subordinated Notes (the "Notes") issued in January 2015, with a 15 year term. Original debt issuance costs were $190 thousand and have

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been netted against the subordinated debt on the consolidated balance sheet in accordance with accounting guidance. These costs are being amortized to interest expense over the life of the Notes.

The Notes are intended to qualify as Tier 2 capital for regulatory purposes and pay interest at a fixed rate of 6.00% per annum through January 30, 2025, after which floating rates apply. Refer to Note 7, "Borrowed Funds and Subordinated Debt," to the Company's audited consolidated financial statements contained in the Company's 2018 Annual Report on Form 10-K for additional information about the Company's subordinated debt.

See Note 2, "Investments," and Note 3, "Loans," to the Company's unaudited consolidated interim financial statements, contained above, for further information regarding securities and loans pledged for borrowed funds. Refer to the "Liquidity" and "Borrowed Funds" sections in the "Financial Condition" section in Item 2, "Management's Discussion and Analysis of financial Condition and Results of Operation," for additional information about other sources of funding available to the Company and the Company's borrowing capacity.

(8) Derivatives and Hedging Activities

Interest-rate lock commitments related to the origination of mortgage loans that will be sold are considered derivative instruments.  The commitments to sell loans are also considered derivative instruments. The Company generally does not pool mortgage loans for sale, but instead sells the loans on an individual basis. To reduce the net interest-rate exposure arising from its loan sale activity, the Company enters into the commitment to sell these loans at essentially the same time that the interest-rate lock commitment is quoted on the origination of the loan. The Company estimates the fair value of these derivatives based on current secondary mortgage market prices. At June 30, 2019 and December 31, 2018, the estimated fair value of the Company's interest-rate lock commitments and commitments to sell these mortgage loans were deemed immaterial.

The Company may use interest-rate swaps as part of its interest rate risk management strategy. Interest-rate swap agreements may be entered into as hedges against future interest-rate fluctuations on specifically identified assets or liabilities. The Company had no derivative fair value hedges or derivative cash flow hedges at June 30, 2019 or December 31, 2018.

The Company has a "Back-to-Back Swap" program whereby the Bank enters into an interest-rate swap with a qualified commercial banking customer and simultaneously enters into an equal and opposite interest-rate swap with a swap counterparty. The customer interest-rate swap agreement allows commercial banking customers to convert a floating-rate loan payment to a fixed-rate payment.

The transaction structure effectively minimizes the Bank's net risk exposure resulting from such transactions. Customer-related credit risk is minimized by the cross collateralization of the loan and the interest-rate swap agreement.

Back-to-Back swaps are not speculative; rather, the transactions result from a service the Company provides to certain commercial customers. Back-to-Back swaps do not meet hedge accounting requirements and therefore changes in the fair value of both the customer swaps and the counterparty swaps, which have an offsetting relationship, are recognized directly in earnings. As a result of this offsetting relationship, there were no net gains or losses recognized in income on Back-to-Back swaps during the six months endedJune 30, 2019 or June 30, 2018.

Each Back-to-Back swap transaction consists of two interest-rate swaps (a customer swap and offsetting counterparty swap) and amounted to a total number of eight interest-rate swaps outstanding at both June 30, 2019 and December 31, 2018, with an aggregate notional amount of $37.1 million and $37.7 million on those respective dates.

Asset derivatives are included in the line item "Prepaid expenses and other assets," and liability derivatives are included in the "Accrued expenses and other liabilities" line item on the consolidated balance sheets, respectively. Interest-rate swaps with the counterparty are subject to master netting agreements, while interest-rate swaps with customers are not.

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

The table below presents the fair value and classification of the Company's derivative financial instruments for the periods presented:

	As of June 30, 2019				As of December 31, 2018
(Dollars in thousands)	Asset Derivatives		Liability Derivatives		Asset Derivatives		Liability Derivatives
Interest-rate contracts - pay floating, receive fixed	$	559	$	207	$	45	$	723
Interest-rate contracts - pay fixed, receive floating	—		352		678		—
Total interest-rate swaps	$	559	$	559	$	723	$	723

By using derivative financial instruments, the Company exposes itself to counterparty-credit risk. Credit risk is the risk of failure by the counterparty to perform under the terms of the derivative contract. When the fair value of a derivative contract is positive, the counterparty owes the Company, which creates credit risk for the Company. When the fair value of a derivative is negative, the Company owes the counterparty and, therefore, it does not possess credit risk. The credit risk in derivative instruments is mitigated by entering into transactions with highly-rated counterparties that management believes to be creditworthy. Additionally, counterparty interest rate swaps contain provisions for collateral to be posted if the derivative exposure exceeds a threshold amount.

The Company has one counterparty and it was rated A and A2 by Standard & Poor's and Moody's, respectively, at June 30, 2019. The Company had no credit risk exposure at June 30, 2019 and $678 thousand at December 31, 2018, respectively, relating to interest-rate swaps with counterparties. The Company posted cash collateral of $400 thousand at June 30, 2019. Collateral posted by the Company is restricted, it is considered an asset of the Company and is carried on the Company's consolidated balance sheet. At December 31, 2018, the Company held cash collateral of $850 thousand. Collateral held by the Company is restricted and not considered an asset of the Company. Therefore, it is not carried on the Company's consolidated balance sheet.

The table below presents the Company's liability derivative position and the potential effect of the netting arrangement on its financial position, as of the period presented. As noted above, interest-rate swaps with customers are not subject to master netting agreements and therefore are not included in the table below.

	As of June 30, 2019
(Dollars in thousands)	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Statement of Financial Position		Net Amounts of Liabilities Presented in the Statement of Financial Position
Liabilities Derivatives
Interest-rate contracts - pay fixed, receive floating	$	559	$	207	$	352

The table below presents the Company's asset derivative position and the potential effect of the netting arrangement on its financial position, as of the period presented. As noted above, interest-rate swaps with customers are not subject to master netting agreements and therefore are not included in the table below.

	As of December 31, 2018
(Dollars in thousands)	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Statement of Financial Position		Net Amounts of Assets Presented in the Statement of Financial Position
Asset Derivatives
Interest-rate contracts - pay fixed, receive floating	$	723	$	45	$	678

The Company's interest-rate swaps with counterparties contain credit-risk-related contingent provisions. These provisions provide the counterparty with the right to terminate its derivative positions and require the Company to settle its obligations under the agreements if the Company defaults on certain of its indebtedness.

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

The Company also participates in loans originated by third party banks, where the originating bank utilizes a back-to-back interest-rate swap structure; however, the Company is not a party to the swap agreements. Under the terms of the loan participations, the Company has accepted contingent liabilities that would only be realized if the swaps were terminated early and there were outstanding losses not covered by the underlying borrowers and the borrowers' pledged collateral.  If applicable, the Company's swap-loss exposure would be equal to the percentage of the Company's participation in the underlying loan applied to the originating bank's swap loss.  At both June 30, 2019 and December 31, 2018, the Company had one such participation loan. At June 30, 2019, management considers the risk of material swap-loss exposure related to this participation loan to be unlikely based on the swap market value, as well as the borrower's financial and collateral strength.

(9) Stockholders' Equity

Shares Authorized and Share Issuance

The Company's authorized capital is divided into common stock and preferred stock. The Company is authorized to issue 40,000,000 shares of common stock, with a par value of $0.01 per share, and as of June 30, 2019 had 11,806,008 shares of common stock issued and outstanding. The Company is authorized to issue 1,000,000 shares of preferred stock, with a par value of $0.01 per share. No preferred stock has been issued as of the date of this Form 10-Q. Holders of common stock are entitled to one vote per share and are entitled to receive dividends if, as and when declared by the Company's Board of Directors (the "Board"). Dividend and liquidation rights of the common stock may be subject to the rights of any outstanding preferred stock.

The Company has a shareholders' rights plan. Under the plan, each share of common stock includes a right to purchase under certain circumstances one one-hundredth of a share of the Company's Series A Junior Participating Preferred Stock, par value $0.01 per share, at a purchase price of $122.50 per one one-hundredth of a preferred share, subject to adjustment, or, in certain circumstances, to receive cash, property, shares of common stock or other securities of the Company. The rights are not presently exercisable and remain attached to the shares of common stock until the occurrence of certain triggering events that would ordinarily be associated with an unsolicited acquisition or attempted acquisition of 10% or more of the Company's outstanding shares of common stock. The rights have no voting or dividend privileges, and unless and until they become exercisable, have no dilutive effect on the earnings of the Company. The rights will expire, unless earlier redeemed, exchanged, or otherwise rescinded by the Company, on January 13, 2028.

The Company's stock incentive plans permit the Board to grant, under various terms, stock options (for the purchase of newly issued shares of common stock), common stock, restricted stock awards, restricted stock units and stock appreciation rights to officers and other employees, non-employee directors and consultants.

The Company issues stock options and restricted stock awards to officers and other employees and restricted stock awards and stock compensation in lieu of cash fees to non-employee directors. The restricted stock awards allow for the non-forfeitable receipt of dividends, and the voting of all shares, whether or not vested, throughout the vesting periods at the same proportional level as common shares outstanding. The unvested restricted stock awards are the Company's only participating securities and are included in shares outstanding. Unvested participating restricted awards amounted to 109,501 shares and 91,708 shares as of June 30, 2019 and December 31, 2018, respectively. See Note 12, "Earnings per Share," to the Company's unaudited consolidated interim financial statements, contained below, for additional information regarding unvested participating restricted awards and the Company's earnings per share calculation.

Upon vesting, restricted stock awards may be net share-settled to cover payment for employee tax obligations, resulting in shares of common stock being reacquired by the Company and returned to the pool of shares reserved for issuance under the incentive plans. Chapter 156D of the Massachusetts General Laws, a statute known as the Massachusetts Business Corporation Act, which applies to Massachusetts corporations such as the Company, eliminates the concept of "treasury stock" and provides that shares reacquired by a Massachusetts company will be treated as authorized but unissued shares.

The Company's stock incentive plans also allow for newly issued shares of common stock to be issued without restrictions to officers and other employees, non-employee directors and consultants. From time to time, the Company issues shares to community members for consulting on regional advisory councils and grants shares of fully vested stock as employee anniversary awards. These shares vest immediately and the cost, which is based on the market price on the date of grant and deemed to be immaterial, is expensed in the period in which the services are rendered. See Note 11, "Stock-Based

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

Compensation," to the Company's unaudited consolidated interim financial statements, contained below, for additional information regarding the Company's stock incentive plans.

In addition to shares issued to employees, non-employee directors and community members for consulting on regional advisory councils, and shares issued through equity offerings, the Company maintains a dividend reinvestment and direct stock purchase plan ("DRSPP") which enables stockholders, at their discretion, to elect to reinvest cash dividends paid on their shares of the Company's common stock by purchasing additional shares of common stock from the Company at a purchase price equal to fair market value. Under the DRSPP, stockholders and new investors also have the opportunity to purchase shares of the Company's common stock without brokerage fees, subject to monthly minimums and maximums.

Comprehensive Income

Comprehensive income is defined as all changes to stockholders' equity except investments by and distributions to stockholders.  Net income is one component of comprehensive income, with other components referred to in the aggregate as other comprehensive income.  At June 30, 2019 and June 30, 2018, the Company's only other comprehensive income component is the net unrealized holding gains or losses on available-for-sale debt securities, net of deferred income taxes. Pursuant to GAAP, the Company initially excludes these unrealized holding gains and losses from net income; however, they are later reported as reclassifications out of accumulated other comprehensive income into net income when the debt securities are sold.

See "Capital Resources" in Item 2, "Management's Discussion and Analysis," of this Form 10-Q for the Company's capital ratios and capital adequacy assessment as of June 30, 2019. Refer to Note 10, "Stockholders' Equity," to the Company's audited consolidated financial statements included in the Company's 2018 Annual Report on Form 10-K for additional information relating to capital adequacy requirements, dividends and the DRSPP.

(10) Supplemental Retirement Plans and Other Post-Retirement Benefit Obligations

Supplemental Employee Retirement Plan ("SERP")

The Company has salary continuation agreements with two of its current executive officers and one former executive officer. These salary continuation agreements provide for predetermined fixed-cash supplemental retirement benefits to be provided for a period of 20 years after each individual reaches a defined "benefit age." The individuals covered under the SERP have reached the defined benefit age and are receiving payments under the plan. Additionally, the Company has not recognized service costs in the current or prior year as each officer had previously attained their individually defined benefit age and was fully vested under the plan.

This non-qualified plan represents a direct liability of the Company, and as such has no specific assets set aside to settle the benefit obligation.  The aggregate amount accrued, or the "accumulated benefit obligation," is equal to the present value of the benefits to be provided to the employee or any beneficiary.  Because the Company's benefit obligations provide for predetermined fixed-cash payments, the Company does not have any unrecognized costs to be included as a component of accumulated other comprehensive income. Benefits paid under the plan amounted to $69 thousand and $138 thousand for both the three and six months endedJune 30, 2019 and June 30, 2018, respectively.

Additionally, on December 11, 2018, the Board approved and adopted the Enterprise Bank Supplemental Executive Retirement and Deferred Compensation Plan.  The plan is unfunded and is maintained for the purpose of providing deferred compensation to a certain group of management employees. Please refer to Exhibit 10.17 attached to the Company's 2018 Annual Report on Form 10-K and our Current Report on Form 8-K filed with the SEC on March 22, 2019 for a more complete description of the plan.

Total expenses for both these plans were $108 thousand and $219 thousand for the three and six months endedJune 30, 2019, respectively, compared to $56 thousand and $112 thousand for the three and six months endedJune 30, 2018, respectively. The Company anticipates accruing an additional $209 thousand in total for these SERPs during the remainder of 2019.

Supplemental Life Insurance

The Company has provided supplemental life insurance through split-dollar life insurance arrangements for certain executive and senior officers on whom the Bank owns BOLI.

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

These arrangements provide a death benefit to the officer's designated beneficiaries that extend to postretirement periods for some of the supplemental life insurance plans. The Company has recognized a liability for these future postretirement benefits.

These non-qualified plans represent a direct liability of the Company and, as such, the Company has no specific assets set aside to settle the benefit obligation.  The funded status is the aggregate amount accrued, or the "accumulated postretirement benefit obligation," which is the present value of the post-retirement benefits associated with this arrangement.

Total net periodic post-retirement benefit cost for supplemental life insurance plans, which consisted mainly of interest costs, were $49 thousand and $99 thousand for the three and six months endedJune 30, 2019, respectively, compared to $44 thousand and $89 thousand for the three and six months endedJune 30, 2018, respectively.

See also Note 11, "Stock-Based Compensation," to the Company's unaudited consolidated interim financial statements, contained below, for further information regarding employee benefits offered in the form of stock options and stock awards.

(11) Stock-Based Compensation

The Company currently has one active individual stock incentive plan: the Enterprise Bancorp, Inc. 2016 Stock Incentive Plan, as amended. As of June 30, 2019, there remained 271,485 shares available for future grants under this plan.

Additionally, the Enterprise Bancorp, Inc 2009 Stock Incentive Plan, as amended, expired in March 2019 with 87,849 unissued shares. As such, this plan is closed for future grants, although awards previously granted under this plan remain outstanding and may be exercised through 2028.

The Company's stock-based compensation expense related to these plans includes stock options and stock awards to officers and other employees included in salary and benefits expense, and stock awards and stock compensation in lieu of cash fees to non-employee directors both included in other operating expenses.  Total stock-based compensation expense was $518 thousand and $944 thousand for the three and six months endedJune 30, 2019, respectively, compared to $500 thousand and $885 thousand for the three and six months endedJune 30, 2018, respectively.

A tax benefit associated with employee exercises and vesting of stock compensation of approximately $17 thousand and $128 thousand was recorded as a reduction of the Company's income tax expense for the three and six months endedJune 30, 2019, respectively, compared with $40 thousand and $235 thousand for the three and six months endedJune 30, 2018, respectively. These amounts, treated as discrete tax items in the period in which they occur, will vary from year to year as a function of the volume of share-based payments vested or exercised and the then-current market price of the Company's stock in comparison to the compensation cost recognized in the Company's unaudited consolidated interim financial statements.

Stock Option Awards

The Company recognized stock-based compensation expense related to stock option awards of $48 thousand and $96 thousand for the three and six months endedJune 30, 2019, respectively, compared to $51 thousand and $102 thousand for the three and six months endedJune 30, 2018, respectively.

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

The table below provides a summary of the options granted, including the weighted average fair value, the fair value as a percentage of the market value of the stock at the date of grant and the average assumptions used in the model for the periods indicated:

	Six Months Ended June 30,
	2019			2018
Options granted	23,218			14,755
Term in years	10			10
Weighted average assumptions used in the fair value model:
Expected volatility	33		%	37		%
Expected dividend yield	2.75		%	2.10		%
Expected life in years	6.5			6.5
Risk-free interest rate	2.58		%	2.86		%
Weighted average market price on date of grants	$	29.84		$	34.33
Per share weighted average fair value	$	8.70		$	11.98
Fair value as a percentage of market value at grant date	29		%	35		%

Options granted during the first six months of 2019 and 2018 generally vest 50% in year two and 50% in year four, on or about the anniversary date of the awards.

The Company utilizes the Black-Scholes option valuation model in order to determine the per share grant date fair value of option grants.

Restricted Stock Awards

Stock-based compensation expense recognized in association with stock awards, mainly restricted stock awards, amounted to $409 thousand and $710 thousand for the three and six months endedJune 30, 2019, respectively, compared to $387 thousand and $646 thousand for the three and six months endedJune 30, 2018, respectively.

Restricted stock awards are granted at the market price of the Company's common stock on the date of the grant. Employee awards generally vest over four years in equal portions beginning on or about the first anniversary date of the award or are performance-based awards that vest upon the Company achieving certain predefined performance objectives. Non-employee director awards generally vest over two years in equal portions beginning on or about the first anniversary date of the award.

The table below provides a summary of restricted stock awards granted during the periods indicated:

	Six Months Ended June 30,
Restricted Stock Awards (number of underlying shares)	2019		2018
Two-year vesting	8,368		7,280
Four-year vesting	22,403		16,666
Performance-based vesting	24,427		20,559
Total restricted stock awards granted	55,198		44,505
Weighted average grant date fair value	$	29.84	$	34.33

Stock in Lieu of Directors' Fees

In addition to restricted stock awards discussed above, the non-employee members of the Company's Board may opt to receive newly issued shares of the Company's common stock in lieu of cash compensation for attendance at Board and Board committee meetings.  Stock-based compensation expense related to these directors' fees amounted to $61 thousand and $138 thousand for the three and six months endedJune 30, 2019, respectively, compared to $62 thousand and $137 thousand for the three and six months endedJune 30, 2018, respectively, and is included in other operating expenses. In January 2019, non-employee directors were issued 7,470 shares of common stock in lieu of 2018 annual cash fees of $250 thousand at a market

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

value price of $33.50 per share, the market value of the common stock on the opt-in measurement date of January 2, 2018.

For further information regarding the Company's stock awards, see Note 9, "Stockholders' Equity," to the Company's unaudited consolidated interim financial statements, contained above, under the caption "Shares Authorized and Share Issuance." There have been no material changes to the terms of the Company's stock incentive plans or the terms for vesting, forfeiture and settlement for options and restricted stock awards granted and outstanding under such plans as reported in the 2018 Annual Report on Form 10-K. Refer to Note 12, "Stock-Based Compensation Plans," to the Company's audited consolidated financial statements in the Company's 2018 Annual Report on Form 10-K for further information on the Company's stock incentive plans, stock options and restricted awards including descriptions of the assumptions used in the valuation model for stock options.

(12) Earnings per Share

Basic earnings per share are calculated by dividing net income available to common stockholders by the weighted average number of common shares outstanding (including participating securities) during the year.  The Company's only participating securities are unvested restricted stock awards that contain non-forfeitable rights to dividends. See Note 9, "Stockholders' Equity," under the caption "Shares Authorized and Share Issuance," to the Company's unaudited consolidated interim financial statements above for further information regarding the Company's participating securities. Diluted earnings per share reflects the effect on weighted average shares outstanding of the number of additional shares outstanding if dilutive stock options were converted into common stock using the treasury stock method.

The table below presents the increase in average shares outstanding, using the treasury stock method, for the diluted earnings per share calculation for the periods indicated:

	Three months ended June 30,		Six months ended June 30,
	2019	2018	2019	2018
Basic weighted average common shares outstanding	11,798,942	11,687,182	11,764,901	11,658,046
Dilutive shares	35,565	77,229	43,932	75,345
Diluted weighted average common shares outstanding	11,834,507	11,764,411	11,808,833	11,733,391

There were 52,571 and 52,478 stock options for the three and six months endedJune 30, 2019, respectively, that were determined to be anti-dilutive and therefore excluded from the calculation of dilutive shares for those periods. There were 29,260 stock options for both the three and six months endedJune 30, 2018 that were determined to be anti-dilutive and therefore excluded from the calculation of dilutive shares for those periods. These stock options, which were not dilutive at those dates, may potentially dilute earnings per share in subsequent periods.

(13) Fair Value Measurements

The FASB defines the fair value of an asset or liability to be the price which a seller would receive in an orderly transaction between market participants (an exit price) and also establishes a fair value hierarchy segregating fair value measurements using three levels of inputs: (Level 1) quoted market prices in active markets for identical assets or liabilities; (Level 2) significant other observable inputs, including quoted prices for similar items in active markets, quoted prices for identical or similar items in markets that are not active, inputs such as interest rates and yield curves, volatilities, prepayment speeds, credit risks and default rates which provide a reasonable basis for fair value determination or inputs derived principally from observed market data; and (Level 3) significant unobservable inputs for situations in which there is little, if any, market activity for the asset or liability.  Unobservable inputs must reflect reasonable assumptions that market participants would use in pricing the asset or liability, which are developed based on the best information available under the circumstances.

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

The following tables summarize significant assets and liabilities carried at fair value and placement in the fair value hierarchy at the dates specified:

	June 30, 2019
			Fair Value Measurements using:
(Dollars in thousands)	Fair Value		(Level 1)		(Level 2)		(Level 3)
Assets measured on a recurring basis:
Debt securities	$	465,944	$	—	$	465,944	$	—
Equity securities	2,428		2,428		—		—
FHLB stock	1,576		—		—		1,576
Interest-rate swaps	559		—		559		—
Assets measured on a non-recurring basis:
Impaired loans (collateral dependent)	1,875		—		—		1,875
Other real estate owned	255		—		—		255
Liabilities measured on a recurring basis:
Interest-rate swaps	$	559	$	—	$	559	$	—

	December 31, 2018
			Fair Value Measurements using:
(Dollars in thousands)	Fair Value		(Level 1)		(Level 2)		(Level 3)
Assets measured on a recurring basis:
Debt securities	$	431,473	$	—	$	431,473	$	—
Equity securities	1,448		1,448		—		—
FHLB stock	5,357		—		—		5,357
Interest-rate swaps	723		—		723		—
Assets measured on a non-recurring basis:
Impaired loans (collateral dependent)	2,574		—		—		2,574
Liabilities measured on a recurring basis:
Interest-rate swaps	$	723	$	—	$	723	$	—

The Company did not transfer any assets between the fair value measurement levels during the six months endedJune 30, 2019 or the year ended December 31, 2018.

All of the Company's debt securities are considered "available-for-sale" and are carried at fair value.  The debt security category above includes federal agency obligations, commercial and residential federal agency MBS, municipal securities, corporate bonds, and CDs, as held at those dates.  The Company utilizes third-party pricing vendors to provide valuations on its debt securities.  Fair values provided by the vendors were generally determined based upon pricing matrices utilizing observable market data inputs for similar or benchmark securities in active markets and/or based on a matrix pricing methodology which employs The Bond Market Association's standard calculations for cash flow and price/yield analysis, live benchmark bond pricing and terms/condition data available from major pricing sources.  Therefore, management regards the inputs and methods used by third-party pricing vendors to be "Level 2 inputs and methods" as defined in the "fair value hierarchy." The Company periodically obtains a second price from an impartial third party on debt securities to assess the reasonableness of prices provided by the primary independent pricing vendor.

The Company's equity portfolio fair value is measured based on quoted market prices for the shares; therefore, these securities are categorized as Level 1 within the fair value hierarchy.

The Bank is required to purchase FHLB stock at par value in association with advances from the FHLB. This stock is classified as a restricted investment and carried at cost which management believes approximates fair value; therefore, these securities are categorized as Level 3 measures. 

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

Impaired loan balances in the table above represent those collateral dependent commercial loans where management has estimated the probable credit loss by comparing the loan's carrying value against the expected realizable fair value of the collateral (appraised value, or internal analysis, less estimated cost to sell, adjusted as necessary for changes in relevant valuation factors subsequent to the measurement date).  Certain inputs used in these assessments, and possible subsequent adjustments, are not always observable, and therefore, collateral dependent loans are categorized as Level 3 within the fair value hierarchy.  A specific allowance is assigned to the collateral dependent loan for the amount of management's estimated probable credit loss.  The specific allowances assigned to the collateral dependent loans amounted to $1.6 million at both June 30, 2019 and December 31, 2018.

Real estate acquired by the Company through foreclosure proceedings or the acceptance of a deed in lieu of foreclosure is classified as OREO. When property is acquired, it is recorded at the estimated fair value of the property acquired, less estimated costs to sell, establishing a new cost basis. The estimated fair value is based on market appraisals and the Company's internal analysis. Certain inputs used in appraisals or the Company's internal analysis, are not always observable, and therefore, OREO may be categorized as Level 3 within the fair value hierarchy.

The fair values for the interest-rate swap assets and liabilities represent a FASB Level 2 measurement and are based on settlement values adjusted for credit risks and observable market interest rate curves. The settlement values are based on discounted cash flow analysis, a widely accepted valuation technique, reflecting the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves. Credit risk adjustments consider factors such as the likelihood of default by the Company and its counterparties, its net exposures and remaining contractual life. The change in value of interest-rate swap assets and liabilities attributable to credit risk was not significant during the reported periods. Refer also to Note 8, "Derivatives and Hedging Activities," to the Company's unaudited consolidated interim financial statements, contained above, for additional information on the Company's interest-rate swaps.

Letters of credit are conditional commitments issued by the Company to guarantee the financial obligation or performance of a customer to a third party.  The fair value of these commitments was estimated to be the fees charged to enter into similar agreements, and accordingly these fair value measures are deemed to be FASB Level 2 measurements.  In accordance with the FASB, the estimated fair values of these commitments are carried on the consolidated balance sheet as a liability and amortized to income over the life of the letters of credit, which are typically one year.  The estimated fair value of these commitments carried on the consolidated balance sheet at June 30, 2019 and December 31, 2018 were deemed immaterial.

Interest-rate lock commitments related to the origination of mortgage loans that will be sold are considered derivative instruments.  The commitments to sell loans are also considered derivative instruments. The Company generally does not pool mortgage loans for sale, but instead sells the loans on an individual basis. To reduce the net interest rate exposure arising from its loan sale activity, the Company enters into the commitment to sell these loans at essentially the same time that the interest-rate lock commitment is quoted on the origination of the loan. The Company estimates the fair value of these derivatives based on current secondary mortgage market prices. These commitments are accounted for in accordance with FASB guidance.  The fair values of the Company's derivative instruments are deemed to be FASB Level 2 measurements.  At June 30, 2019 and December 31, 2018, the estimated fair value of the Company's interest-rate lock commitments and commitments to sell these mortgage loans were deemed immaterial.

The following table presents additional quantitative information about assets measured at fair value on a recurring and non-recurring basis for which the Company utilized Level 3 inputs (significant unobservable inputs for situations in which there is little, if any, market activity for the asset or liability) to determine fair value as of June 30, 2019 and December 31, 2018:

	Fair Value
(Dollars in thousands)	June 30, 2019		December 31, 2018		Valuation Technique	Unobservable Input	Unobservable Input Value or Range
Assets measured on a recurring basis:
FHLB stock	$	1,576	$	5,357	Stated Par Value	N/A	N/A
Assets measured on a non-recurring basis:
Impaired loans(collateral dependent)	$	1,875	$	2,574	Appraisal of collateral	Appraisal adjustments (1)	5% - 50%
Other real estate owned	$	255	$	—	Appraisal of collateral	Appraisal adjustments (1)	0% - 30%

__________________________________________

(1)    Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses.

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

Estimated Fair Values of Assets and Liabilities

In addition to disclosures regarding the measurement of assets and liabilities carried at fair value on the consolidated balance sheet, the Company is also required to disclose fair value information about financial instruments for which it is practicable to estimate that value, whether or not recognized on the consolidated balance sheet. 

The carrying values, estimated fair values and placement in the fair value hierarchy of the Company's consolidated financial instruments for which fair value is only disclosed but not recognized on the consolidated balance sheet at the dates indicated are summarized as follows:

	June 30, 2019
					Fair value measurement
(Dollars in thousands)	Carrying Amount		Fair Value		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Financial assets:
Loans held for sale	$	1,376	$	1,387	$	—	$	1,387	$	—
Loans, net	2,379,751		2,384,279		—		—		2,384,279
Financial liabilities:
CDs (including brokered)	294,862		295,456		—		295,456		—
Borrowed funds	484		339		—		339		—
Subordinated debt	14,866		15,187		—		—		15,187

	December 31, 2018
					Fair value measurement
(Dollars in thousands)	Carrying Amount		Fair Value		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Financial assets:
Loans held for sale	$	701	$	710	$	—	$	710	$	—
Loans, net	2,353,657		2,331,076		—		—		2,331,076
Financial liabilities:
CDs (including brokered)	341,014		339,308		—		339,308		—
Borrowed funds	100,492		100,312		—		100,312		—
Subordinated debt	14,860		14,300		—		—		14,300

Excluded from the tables above are certain financial instruments with carrying values that approximated their fair value at the dates indicated, as they were short-term in nature or payable on demand.  These include cash and cash equivalents and non-term deposit accounts. The respective carrying values of these instruments would all be classified within Level 1 of their fair value hierarchy.

Also excluded from these tables are the fair values of commitments for unused portions of lines of credit and commitments to originate loans that were short-term, at current market rates and estimated to have no significant change in fair value.

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

(14) Supplemental Cash Flow Information

The supplemental cash flow information for the six months ended June 30, 2019 and June 30, 2018 is as follows:

	Six months ended June 30, 2019
(Dollars in thousands)	2019		2018
Supplemental financial data:
Cash paid for: interest	$	10,753	$	5,559
Cash paid for: income taxes	5,671		4,663
Cash paid for: lease liability	576		—
Supplemental schedule of non-cash activity:
Net purchases of investment securities not yet settled	2,950		351
Transfer from loans to other real estate owned	255		—
ROU lease assets: operating leases(1)	19,635		—

_________________________________________

(1) This represents the ROU lease asset that was recorded upon adoption of ASC 842 and new leases added in the current year and is primarily offset by a corresponding lease liability.

39

Item 2 - Management's Discussion and Analysis of Financial Condition and Results of Operations

Special Note Regarding Forward-Looking Statements

Management's discussion and analysis should be read in conjunction with the Company's unaudited consolidated interim financial statements and notes thereto contained in this Quarterly Report on Form 10-Q (this "Form 10-Q") and the audited consolidated financial statements and notes thereto contained in the Company's Annual Report on Form 10-K for the year ended December 31, 2018 (the "2018 Annual Report on Form 10-K").

This Form 10-Q contains certain forward-looking statements concerning plans, objectives, future events or performance and assumptions and other statements that are other than statements of historical fact. Forward-looking statements may be identified by reference to a future period or periods or by use of forward-looking terminology such as "will," "should," "could," "anticipates," "believes," "expects," "intends," "may," "plans," "pursue," "views" and similar terms or expressions.

Various statements contained in Item 2 - "Management's Discussion and Analysis of Financial Condition and Results of Operations" and Item 3 - "Quantitative and Qualitative Disclosures About Market Risk" of this Form 10-Q are forward-looking statements, including, but not limited to statements related to management's views on:

• the banking environment and the economy;

• competition and market expansion opportunities;

• the interest-rate environment, credit risk and the level of future non-performing assets and charge-offs;

• potential asset and deposit growth, future non-interest expenditures and non-interest income growth;

• expansion strategy; and

• borrowing capacity.

The Company (also referred to herein as "Enterprise," "us," "we," or "our") cautions readers that such forward-looking statements reflect numerous assumptions and involve a number of risks and uncertainties that could cause the Company's actual results to differ materially from those expressed in, or implied by, the forward-looking statement. Any forward-looking statements in this Form 10-Q are based on information available to the Company as of the date of this Form 10-Q, and the Company undertakes no obligation to publicly update or otherwise revise any forward-looking statement, whether as a result of new information, future events or otherwise, except as required by applicable law. The following important factors, among others, could cause the Company's results for subsequent periods to differ materially from those expressed in any forward-looking statement made herein:

(i) changes in interest rates could negatively impact net interest income;

(ii) changes in the business cycle and downturns in the local, regional or national economies, including deterioration in the local real estate market, could negatively impact credit and/or asset quality and result in credit losses and increases in the Company's allowance for loan losses;

(iii) changes in consumer spending could negatively impact the Company's credit quality and financial results;

(iv) increasing competition from larger regional and out-of-state banking organizations as well as non-bank providers of various financial services could adversely affect the Company's competitive position within its market area and reduce demand for the Company's products and services;

(v) deterioration of securities markets could adversely affect the value or credit quality of the Company's assets and the availability of funding sources necessary to meet the Company's liquidity needs;

(vi) technology-related risk, including technological changes and technology service interruptions or failure could adversely impact the Company's operations and increase technology-related expenditures;

(vii) cybersecurity risk including security breaches and identity theft could impact the Company's reputation, increase regulatory oversight and impact the financial results of the Company;

(viii) increases in employee compensation and benefit expenses could adversely affect the Company's financial results;

(ix) changes in laws and regulations that apply to the Company's business and operations, and any additional regulations, or repeals that may be forthcoming as a result thereof, could cause the Company to incur additional costs and adversely affect the Company's business environment, operations and financial results;

(x) changes in accounting and/or auditing standards, policies and practices, as may be adopted or established by the regulatory agencies, FASB, or the Public Company Accounting Oversight Board could negatively impact the Company's financial results;

(xi) our ability to enter new markets successfully and capitalize on growth opportunities, including the receipt of required regulatory approvals;

(xii) future regulatory compliance costs, including any increase caused by new regulations imposed by the government's current administration; and

(xiii) the risks and uncertainties described in the documents that the Company files or furnishes to the SEC, including those discussed under Item 1A, "Risk Factors" of the Company's 2018 Annual Report on Form 10-K, which could have a material adverse effect on the Company's business, financial condition and results of operations. 

Therefore, the Company cautions readers not to place undue reliance on any such forward-looking information and statements.

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Overview

Executive Summary

Net income for the three months ended June 30, 2019 amounted to $7.8 million, an increase of $189 thousand, or 2%, compared to the three months ended June 30, 2018. Diluted earnings per share were $0.66 for the three months ended June 30, 2019, an increase of 3%, compared to $0.64 for the three months ended June 30, 2018. Net income for the six months endedJune 30, 2019 amounted to $16.5 million, an increase of $2.1 million, or 14%, compared to the six months endedJune 30, 2018. Diluted earnings per share were $1.39 for the six months endedJune 30, 2019, an increase of 13%, compared to $1.23 for the six months endedJune 30, 2018.

Over the past twelve months, total assets, total loans, and customer deposits increased by 8%, 5%, and 14%, respectively, compared to June 30, 2018. The increase in customer deposits includes several relationships which, as of June 30, 2019, had large short-term balances.

Loan and deposit growth, along with a reduction in the loan loss provision due to improved credit metrics compared to the six months endedJune 30, 2018, were the key drivers to our earnings increase as compared to the same prior year-to-date period. Strategically, we remain focused on organic growth and continually planning for and investing in our future with an emphasis on people, technology, digital transformation, branch transformation and consistent market expansion.

Composition of Earnings

The Company's earnings are largely dependent on its net interest income, which is the difference between interest earned on loans and investments and the cost of funding (primarily deposits and borrowings).  Net interest income expressed as a percentage of average interest earning assets is referred to as net interest margin ("Margin"). 

Net interest income for the three months ended June 30, 2019 amounted to $28.8 million, an increase of $1.6 million, or 6%, compared to the same period in 2018. Net interest income for the six months endedJune 30, 2019 amounted to $56.9 million, an increase of $3.6 million, or 7%, compared to the six months endedJune 30, 2018. The increase in net interest income was due largely to interest-earning asset growth, primarily in loans. Average loan balances increased $99.8 million for the three months ended June 30, 2019 and $99.3 million for the six months endedJune 30, 2019, compared to the same respective 2018 period averages. Tax equivalent net interest margin ("TE Margin") was 3.96% for the three months ended June 30, 2019, compared to 4.03% for the three months ended June 30, 2018. TE Margin was 3.97% for the six months endedJune 30, 2019, compared to 3.99% for the six months endedJune 30, 2018.

For the three months ended June 30, 2019, the provision to the allowance for loan losses amounted to $955 thousand, compared to $300 thousand during the three months ended June 30, 2018. The increase in the provision in the second quarter of 2019 was due to the higher levels of: loan growth; reserves necessary for credit impaired and classified commercial relationships; and net charge-offs compared to the same three month period in 2018.

For the six months endedJune 30, 2019, the provision to the allowance for loan losses was $555 thousand, compared to the provision of $1.9 million for the six months endedJune 30, 2018. The decrease compared to the prior year was due primarily to generally improved credit metrics compared to the prior year period. The 2018 period was impacted by credit deterioration of several impaired and classified commercial relationships and the level of loan growth, primarily during the first quarter of that period.

Affecting the provision for loan losses for three and six month periods ended June 30, 2019 compared to the same periods in the prior year were:

• The ratio of classified loans to total loans amounted to 2.37% at June 30, 2019, compared to 2.54% at June 30, 2018.

• Loan growth for the six months endedJune 30, 2019 was $26.6 million (predominantly in the second quarter of 2019), compared to $28.7 million during the six months endedJune 30, 2018 (the majority in the first quarter of 2018).

• Net charge-offs were $333 thousand for the three months ended June 30, 2019, compared to net charge-offs of $27 thousand for the three months ended June 30, 2018.

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• Net charge-offs were $53 thousand for the six months endedJune 30, 2019, compared to net charge-offs of $18 thousand for the six months endedJune 30, 2018.

• After foreclosure proceedings in 2019, one previously classified commercial loan relationship was transferred to Other Real Estate Owned ("OREO") with a net carry value of $255 thousand as of June 30, 2019, the Company carried no OREO during 2018.

The allowance for loan losses to total loans ratio was 1.42% at both June 30, 2019 and December 31, 2018. At June 30, 2018, the ratio was 1.51%.

Non-interest income for the three months ended June 30, 2019 amounted to $4.0 million, an increase of $307 thousand, or 8%, compared to the three months ended June 30, 2018. Non-interest income for the six months endedJune 30, 2019 amounted to $7.9 million, an increase of $352 thousand, or 5%, compared to the six months endedJune 30, 2018. Non-interest income increased in 2019 due primarily to increases in deposit and interchange fees, net gains on sales of investments, and gains on fair value adjustments of equity securities, which is included in other income, partially offset by lower wealth management income.

Non-interest expense for the three months ended June 30, 2019 amounted to $21.8 million, an increase of $945 thousand, or 5%, compared to the three months ended June 30, 2018. For the six months endedJune 30, 2019, non-interest expense amounted to $42.6 million, an increase of $2.3 million, or 6%, compared to the six months endedJune 30, 2018. Increases in non-interest expense in 2019 primarily related to the Company's strategic growth initiatives, particularly salaries and employee benefits expenses.

Sources and Uses of Funds

The Company's primary sources of funds are customer and brokered deposits, FHLB borrowings, current earnings and proceeds from the sales, maturities and pay-downs on loans and investment securities.  The Company may also, from time to time, utilize overnight borrowings from correspondent banks. Additionally, funding for the Company may be generated through equity transactions, including the dividend reinvestment and direct stock purchase plan or exercise of stock options, and occasionally the issuance of debt securities or the sale of new stock. The Company's sources of funds are intended to be used to originate loans, purchase investment securities, conduct operations, expand the branch network, and pay dividends to stockholders.

The investment portfolio is primarily used to provide liquidity, manage the Company's asset-liability position and to invest excess funds, providing additional sources of revenue. Total investments, the second-key component of interest-earning assets, amounted to $468.4 million at June 30, 2019, an increase of $35.5 million, or 8%, since December 31, 2018, and comprised 15% of total assets at both June 30, 2019 and December 31, 2018.

Enterprise's main asset strategy is to grow loans, the largest component of interest-earning assets, with a focus on high quality commercial lending relationships.  Total loans, comprising 76% of total assets at June 30, 2019 compared to 81% at December 31, 2018, amounted to $2.41 billion at June 30, 2019, compared to $2.39 billion at December 31, 2018, an increase of $26.6 million, or 1%. Total commercial loans amounted to $2.07 billion, or 86% of gross loans, at June 30, 2019, which was consistent with the composition at December 31, 2018.

Management's preferred strategy for funding asset growth is to grow relationship-based deposit balances, preferably transactional deposits (comprised of non-interest checking accounts, interest-bearing checking accounts and traditional savings accounts).  Asset growth in excess of transactional deposits is typically funded through non-transactional deposits (comprised of money market accounts, commercial tiered rate or "investment savings" accounts and term CDs) and wholesale funding (brokered deposits and borrowed funds).

At June 30, 2019, customer deposits (total deposits excluding brokered deposits) amounted to $2.83 billion, or 89% of total assets, compared to $2.51 billion, or 85% of total assets, at December 31, 2018. Since December 31, 2018, customer deposits increased $322.1 million, or 13%, primarily in checking and money market accounts.

Wholesale funding amounted to $484 thousand at June 30, 2019, compared to $157.3 million at December 31, 2018. Wholesale funding consisted of one FHLB advance at June 30, 2019. At December 31, 2018, wholesale funding included brokered CDs of $56.8 million and FHLB advances of $100.5 million. The Company's level of wholesale funding has decreased $156.8 million since December 31, 2018 as increases in customer deposit balances have exceeded loan growth.

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The re-pricing frequency of the Company's assets and liabilities are not identical, and therefore subject the Company to the risk of adverse changes in interest rates. This is often referred to as "interest-rate risk" and is reviewed in more detail in Part I, Item 3, "Quantitative and Qualitative Disclosures About Market Risk," of this Form 10-Q and in Item 7A, "Quantitative and Qualitative Disclosures About Market Risk," of the Company's 2018 Annual Report on Form 10-K.

Culture and Organic Growth Strategy

The Company actively seeks to increase market share and strengthen its competitive position through continuous reviews of competitive product offerings (including terms, liquidity, risk and return), fee structure, delivery channels, customer service levels, employee training, and a consistent and unwavering commitment to our core values of Excellence, Integrity, Teamwork, Professionalism, and Community. The Company's business model is to provide a full range of diversified financial products and services through a highly-trained staff of knowledgeable banking professionals, with in-depth understanding of our markets, and a commitment to open and honest communication with clients. Management believes the Company has differentiated itself from the competition by building a solid reputation within the local market as a convenient, dependable commercial-focused community bank, delivering consistent and exceptional customer service, offering competitive products, and taking an active role in support of the communities we serve. The Company's banking professionals are committed to upholding the Company's core values, including significant and active involvement in many charitable and civic organizations, and community development programs throughout our service area. This long-held commitment to community not only contributes to the welfare of the communities we serve, it also helps to fuel the local economy and has led to a strong referral network with local businesses, non-profit organizations and community leaders. Management believes the Company's community service culture and reputation makes the Enterprise team stand out among the competition and positions the Company to be a leading banking provider of commercial and residential loans, deposits and cash management services, wealth management and wealth services, and trust and insurance services in its growing market area.

Management believes that Enterprise is well equipped to capitalize on market potential to grow both the commercial and residential loan portfolios through strong business development and referral efforts, while utilizing a disciplined and consistent lending approach and credit review practices, which have served to provide consistent quality asset growth over varying economic cycles during the Company's history.  The Company has a skilled lending sales force with a broad breadth of business knowledge and depth of lending experience to draw upon, supported by a highly qualified and experienced commercial credit review function.

Management continues to undertake significant strategic growth initiatives, including investments in employee hiring, training and development; marketing and public relations; technology; digital/electronic delivery methods; ongoing improvements, renovations or strategic relocation of existing facilities; and the continued cultivation of recently added branches.  The Company is in the process of renovating several branches and relocated the Leominster, Massachusetts branch in the first half of 2018 to a new, larger, and custom-designed branch, in a prime location. Management believes these investments will provide improved, state-of-the-art experiences to better serve and attract customers. The Company also continually looks to expand branch locations within, and to complement, our existing footprint and expects to open two new branch locations, one in Lexington, Massachusetts and the other in North Andover, Massachusetts, both pending regulatory approvals, anticipating that the offices will open in the fall of 2019 and in the first half of 2020, respectively. Our consistent branch expansion is aimed at achieving not only deposit market share growth, but also is intended to contribute to loan originations and generate referrals for wealth management, wealth services, trust and insurance services, and cash management products. Management also seeks out opportunities to recruit experienced key banking professionals with insightful market knowledge who complement the Enterprise sales and service culture. While management recognizes that such investments increase expenses in the short term, Enterprise believes that such initiatives are a necessary investment in the long-term growth and earnings potential of the Company and will help the Company to capitalize on current opportunities in the marketplace for community banks such as Enterprise. However, lower than expected returns on these investments, such as slower than anticipated loan and deposit growth in new branches and/or lower than expected adoption rates or income generated from new technology or initiatives, could decrease anticipated revenues and net income on such investments in the future.

Financial Condition

Total assets increased $203.2 million, or 7%, since December 31, 2018, to $3.17 billion at June 30, 2019.  The balance sheet composition and changes since December 31, 2018 are discussed below.

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Cash and cash equivalents

Cash and cash equivalents may be comprised of cash on hand and cash items due from banks, interest-earning deposits (deposit accounts, excess reserve cash balances, money markets, and money market mutual funds accounts) and federal funds sold ("fed funds"). Cash and cash equivalents amounted to 6% of total assets at June 30, 2019, an increase of $123.8 million since December 31, 2018 due primarily to strong deposit growth which exceeded loan growth in the first half of 2019, including several relationships with large short-term balances. At December 31, 2018, cash and cash equivalents amounted to 2% of total assets. Balances in cash and cash equivalents will fluctuate due primarily to the timing of net deposit flows, borrowing and loan inflows and outflows, investment purchases, maturities, calls and sales, and the immediate liquidity needs of the Company.

Investments

At June 30, 2019, the fair value of the investment portfolio amounted to $468.4 million, an increase of $35.5 million, or 8%, since December 31, 2018. The investment portfolio represented 15% of total assets at June 30, 2019 and December 31, 2018.  As of June 30, 2019, and December 31, 2018, the investment portfolio was primarily comprised of debt securities, with a small portion of the portfolio invested in equity securities.

During the six months endedJune 30, 2019, the Company purchased $55.9 million in securities. The Company had principal pay downs, calls and maturities totaling $22.7 million during the six months endedJune 30, 2019.

During the six months endedJune 30, 2019, management sold debt securities with an amortized cost of approximately $11.6 million realizing net gains on sales of $146 thousand.

See also Note 2, "Investment Securities," and Note 13, "Fair Value Measurements," to the Company's unaudited consolidated interim financial statements contained in Item 1 above for further information regarding the Company's unrealized gains and losses on debt securities, including information about investments in an unrealized loss position for which an OTTI has not been recognized, and investments pledged as collateral, as well as the Company's fair value measurements for investment securities.

Debt Securities

The following table summarizes the fair value of debt securities at the dates indicated:

	June 30, 2019				December 31, 2018				June 30, 2018
(Dollars in thousands)	Amount		Percent		Amount		Percent		Amount		Percent
Federal agency obligations(1)	$	1,005	0.2	%	$	7,975	1.9	%	$	48,322	11.5	%
Residential federal agency MBS(1)	172,738		37.1	%	172,726		40.0	%	150,840		35.8	%
Commercial federal agency MBS(1)	117,011		25.1	%	93,979		21.8	%	72,165		17.1	%
Municipal securities	159,857		34.3	%	142,043		32.9	%	137,587		32.7	%
Corporate bonds	14,383		3.1	%	13,806		3.2	%	11,369		2.7	%
CDs(2)	950		0.2	%	944		0.2	%	942		0.2	%
Total debt securities	$	465,944	100.0	%	$	431,473	100.0	%	$	421,225	100.0	%

__________________________________________ 

(1) These categories may include investments issued or guaranteed by government sponsored enterprises such as Fannie Mae ("FNMA"), Freddie Mac ("FHLMC"), Federal Farm Credit Bank ("FFCB"), or one of several Federal Home Loan Banks, as well as, investments guaranteed by Ginnie Mae ("GNMA"), a wholly-owned government entity.  

(2) CDs represent term deposits issued by banks that are subject to FDIC insurance and purchased on the open market.

Included in the residential and commercial federal agency MBS categories were collateralized mortgage obligations ("CMOs") issued by U.S. agencies totaling $266.1 million, $242.8 million, and $189.7 million at June 30, 2019, December 31, 2018 and June 30, 2018, respectively. Included in municipal securities were tax exempt municipal securities with fair values totaling $100.1 million, $107.3 million and $118.8 million at June 30, 2019, December 31, 2018 and June 30, 2018, respectively.

Net unrealized gains on the debt securities portfolio amounted to $12.7 million at June 30, 2019, compared to net unrealized losses of $1.7 million at December 31, 2018 and net unrealized losses of $8.6 million at June 30, 2018. The Company attributes the increase in net unrealized gains at June 30, 2019 compared to December 31, 2018 to decreases in market yields

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since year end. Additionally, the Company attributes the increase in net unrealized gains since June 30, 2018 to lower market rates and a restructuring of the debt security portfolio in the fourth quarter of 2018. Unrealized gains or losses on debt securities are carried on the balance sheet and will be recognized in the consolidated statements of income if the investments are sold. Should an investment be deemed OTTI, the Company is required to write-down the fair value of the investment.  See Note 1, "Summary of Significant Accounting Policies," under Item (e), "Investments," to the Company's audited consolidated financial statements contained in the Company's 2018 Annual Report on Form 10-K for additional information on accounting for OTTI. For more information about the Company's assessment for OTTI, see Note 2, "Investment Securities," to the Company's audited consolidated financial statements contained in the Company's 2018 Annual Report on Form 10-K.

Equity Securities

The Company held equity securities with a fair value of $2.4 million as of June 30, 2019, compared to a fair value of $1.4 million at December 31, 2018 and $949 thousand at June 30, 2018. During the six months endedJune 30, 2019, the Company's fair value gain on equity securities recorded in the consolidated statement of income was $263 thousand. During the six months endedJune 30, 2018, the net fair value loss on equity securities was immaterial. The fair value changes of equity securities that will be recognized in net income in the future will depend on the amount of dollars invested in equities and the magnitude of changes in equity markets.

Federal Home Loan Bank Stock

The Bank is required to purchase stock of the FHLB at par value in association with advances from the FHLB; this stock is classified as a restricted investment and carried at cost, which management believes approximates fair value.  The Company's investment in FHLB stock was $1.6 million at June 30, 2019, $5.4 million at December 31, 2018 and $2.6 million at June 30, 2018.

See Note 1, "Summary of Significant Accounting Policies," Item (c), "Restricted Cash and Investments," to the Company's unaudited consolidated interim financial statements contained in Item 1 above for further information regarding the Company's investment in FHLB stock.

Loans

Total loans represented 76% of total assets at June 30, 2019 and 81% of total assets at December 31, 2018.  Total loans increased by $26.6 million, or 1%, as compared to December 31, 2018, and increased $115.5 million, or 5%, since June 30, 2018. The mix of loans within the portfolio remained relatively unchanged with commercial loans amounting to approximately 86% of gross loans at June 30, 2019, reflecting a continued focus on commercial loan growth.

The following table sets forth the loan balances by certain loan categories at the dates indicated and the percentage of each category to gross loans:

	June 30, 2019					December 31, 2018					June 30, 2018
(Dollars in thousands)	Amount			Percent		Amount			Percent		Amount			Percent
Commercial real estate	$	1,294,509		53.6	%	$	1,303,879		54.6	%	$	1,246,501		54.2	%
Commercial and industrial	514,402			21.3	%	514,253			21.5	%	493,981			21.5	%
Commercial construction	264,484			10.9	%	234,430			9.8	%	246,865			10.7	%
Total commercial loans	2,073,395			85.8	%	2,052,562			85.9	%	1,987,347			86.4	%
Residential mortgages	235,392			9.7	%	231,501			9.7	%	205,781			8.9	%
Home equity loans and lines	97,994			4.1	%	96,116			4.0	%	98,176			4.3	%
Consumer	10,208			0.4	%	10,241			0.4	%	9,756			0.4	%
Total retail loans	343,594			14.2	%	337,858			14.1	%	313,713			13.6	%
Gross loans	2,416,989			100.0	%	2,390,420			100.0	%	2,301,060			100.0	%
Deferred fees, net	(2,887		)			(2,914		)			(2,465		)
Total loans	2,414,102					2,387,506					2,298,595
Allowance for loan losses	(34,351		)			(33,849		)			(34,797		)
Net loans	$	2,379,751				$	2,353,657				$	2,263,798

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As of June 30, 2019, commercial real estate loans decreased $9.4 million, or 1%, compared to December 31, 2018, and increased $48.0 million, or 4%, compared to June 30, 2018. Commercial real estate loans are typically secured by a variety of owner-use and non-owner occupied (investor) commercial and industrial property types including one-to-four and multi-family apartment buildings, office, industrial or mixed-use facilities, strip shopping centers or other commercial properties and are generally guaranteed by the principals of the borrower.

As of June 30, 2019, commercial and industrial loan balances were relatively flat compared to December 31, 2018 and increased $20.4 million, or 4%, compared to June 30, 2018.  These loans include seasonal and formula-based revolving lines of credit, working capital loans, equipment financing (including equipment leases), formula-based lines of credit, and term loans.  Also included in commercial and industrial loans are loans partially guaranteed by the U.S. Small Business Administration ("SBA"), and loans under various programs and agencies. Commercial and industrial credits may be unsecured loans and lines to financially strong borrowers, loans secured in whole or in part by real estate unrelated to the principal purpose of the loan or secured by inventories, equipment, or receivables, and are generally guaranteed by the principals of the borrower. 

Commercial construction loans increased by $30.1 million, or 13%, since December 31, 2018, and increased $17.6 million, or 7%, compared to June 30, 2018. Commercial construction loans include the development of residential housing and condominium projects, the development of commercial and industrial use property and loans for the purchase and improvement of raw land. These loans are secured in whole or in part by underlying real estate collateral and are generally guaranteed by the principals of the borrowers. In many cases, these loans move into the permanent commercial real estate portfolio when the construction phase is completed. The increase since December 31, 2018 was due primarily to funding related to residential housing and condominium projects.

Total retail loan balances increased by $5.7 million, or 2%, since December 31, 2018, and have increased $29.9 million, or 10%, since June 30, 2018. Residential secured one-to-four family mortgage loans continue to make up the largest portion of the retail segment. The increase since December 31, 2018 was due primarily an increase in originations of adjustable rate residential mortgages which are typically held in our portfolio rather than sold.

At June 30, 2019, commercial loan balances participated out to various banks amounted to $70.0 million, compared to $72.1 million at December 31, 2018, and $74.7 million at June 30, 2018.  These balances participated out to other institutions are not carried as assets on the Company's financial statements. Commercial loans originated by other banks in which the Company is a participating institution are carried at the pro-rata share of ownership and amounted to $69.0 million, $63.5 million and $79.0 million at June 30, 2019, December 31, 2018, and June 30, 2018, respectively. In each case, the participating bank funds a percentage of the loan commitment and takes on the related pro-rata risk. The rights and obligations of each participating bank are divided proportionately among the participating banks in an amount equal to their share of ownership and with equal priority among all banks. Each participation is governed by individual participation agreements executed by the lead bank and the participant at loan origination. Participating loans with other institutions provide banks the opportunity to retain customer relationships and reduce credit risk exposure among each participating bank, while providing customers with larger credit vehicles than the individual bank might be willing or able to offer independently.

See Note 3, "Loans," to the Company's unaudited consolidated interim financial statements contained in Item 1 of this Form 10-Q for information on loans serviced for others and loans pledged as collateral.

Credit Risk

Inherent in the lending process is the risk of loss due to customer non-payment, or "credit risk." The Company's commercial lending focus may entail significant additional credit risks compared to long-term financing on existing, owner-occupied residential real estate.  The Company seeks to lessen its credit risk exposure by managing its loan portfolio to avoid concentration by industry, relationship size, and source of repayment, and through sound underwriting practices and the credit risk management function; however, management recognizes that loan losses will occur and that the amount of these losses will fluctuate depending on the risk characteristics of the loan portfolio and economic conditions.

Non-performing assets are comprised of non-accrual loans, deposit account overdrafts that are more than 90 days past due and OREO.  The designation of a loan or other asset as non-performing does not necessarily indicate that loan principal and interest will ultimately be uncollectible.  However, management recognizes the greater risk characteristics of these assets and therefore considers the potential risk of loss on assets included in this category in evaluating the adequacy of the allowance for loan losses.  The level of delinquent and non-performing assets is largely a function of economic conditions and the overall banking environment and the individual business circumstances of borrowers.  Despite prudent loan underwriting, adverse changes within the Company's market area, or deterioration in local, regional or national economic conditions, could negatively impact the Company's level of non-performing assets in the future.

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Asset Quality

The following table sets forth information regarding non-performing assets, trouble debt restructuring ("TDR") loans and delinquent loans 60-89 days past due as to interest or principal, held by the Company at the dates indicated:

(Dollars in thousands)	June 30, 2019			December 31, 2018			June 30, 2018
Non-accrual loan summary:
Commercial real estate	$	6,602		$	6,894		$	6,512
Commercial and industrial	4,049			3,417			3,438
Commercial construction	123			176			187
Residential	745			763			429
Home equity	432			514			494
Consumer	27			17			17
Total non-accrual loans	11,978			11,781			11,077
Overdrafts > 90 days past due	—			3			—
Total non-performing loans	11,978			11,784			11,077
OREO	255			—			—
Total non-performing assets	$	12,233		$	11,784		$	11,077
Total Loans	$	2,414,102		$	2,387,506		$	2,298,595
Accruing TDR loans not included above	$	19,091		$	19,389		$	18,077
Delinquent loans 60-89 days past due and still accruing	$	1,000		$	205		$	1,054
Loans 60-89 days past due and still accruing to total loans	0.04		%	0.01		%	0.05		%
Adversely classified loans to total loans	1.42		%	1.49		%	1.54		%
Non-performing loans to total loans	0.50		%	0.49		%	0.48		%
Non-performing assets to total assets	0.39		%	0.40		%	0.38		%
Allowance for loan losses	$	34,351		$	33,849		$	34,797
Allowance for loan losses to non-performing loans	286.78		%	287.25		%	314.14		%
Allowance for loan losses to total loans	1.42		%	1.42		%	1.51		%

The majority of non-accrual loans were also carried as impaired loans during the periods and the changes since December 31, 2018 are discussed further below.

At June 30, 2019 and December 31, 2018, the Company had adversely classified loans (loans carrying "substandard," "doubtful" or "loss" classifications) amounting to $34.4 million and $35.5 million, respectively. Total adversely classified loans amounted to 1.42% of total loans at June 30, 2019, compared to 1.49% at December 31, 2018. Adversely classified loans that were performing but possessed potential weaknesses and, as a result, could ultimately become non-performing loans amounted to $22.4 million at June 30, 2019 and $23.8 million at December 31, 2018.  The remaining balances of adversely classified loans were non-accrual loans, amounting to $11.9 million at June 30, 2019 and $11.7 million at December 31, 2018.  Non-accrual loans that were not adversely classified amounted to $33 thousand and $81 thousand at June 30, 2019 and December 31, 2018, respectively, and primarily represented the guaranteed portions of non-performing SBA loans.

Total impaired loans amounted to $31.1 million and $31.5 million at June 30, 2019 and December 31, 2018, respectively.  Total accruing impaired loans amounted to $19.1 million and $19.7 million at June 30, 2019 and December 31, 2018, respectively, while non-accrual impaired loans amounted to $12.0 million and $11.8 million as of June 30, 2019 and December 31, 2018, respectively.

In management's opinion, the majority of impaired loan balances at June 30, 2019 and December 31, 2018 were supported by expected future cash flows or, for those collateral dependent loans, the net realizable value of the underlying collateral. Based on management's assessment at June 30, 2019, impaired loans totaling $26.8 million required no specific reserves and impaired loans totaling $4.3 million required specific reserve allocations of $2.3 million.  At December 31, 2018, impaired loans totaling $26.4 million required no specific reserves and impaired loans totaling $5.1 million required specific reserve allocations of $2.2

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million.  Management closely monitors impaired relationships for the individual business circumstances, and underlying collateral or credit deterioration to determine if additional reserves are necessary.

Total TDR loans included in the impaired loan amounts above as of June 30, 2019 and December 31, 2018 were $24.6 million and $23.1 million, respectively.  TDR loans on accrual status amounted to $19.1 million and $19.4 million at June 30, 2019 and December 31, 2018, respectively. TDR loans included in non-performing loans amounted to $5.5 million at June 30, 2019 and $3.7 million at December 31, 2018.  The Company continues to work with customers and enters into loan modifications (which may or may not be TDRs) to the extent deemed to be necessary or appropriate while attempting to achieve the best mutual outcome given the individual financial circumstances and prospects of the borrower.

The Company carried one OREO property at June 30, 2019 with a carry value of $255 thousand, and no OREO at December 31, 2018 or June 30, 2018. There were no other additions, sales or write-downs on OREO during the six months endedJune 30, 2019 or 2018.

Allowance for Loan Losses

The allowance for loan losses is an estimate of probable credit loss inherent in the loan portfolio as of the specified balance sheet dates. On a quarterly basis, management prepares an estimate of the allowance necessary to cover estimated probable credit losses.  The Company maintains the allowance at a level that it deems adequate to absorb all reasonably anticipated probable losses from specifically known and other credit risks associated with the portfolio.

There have been no material changes to the Company's underwriting practices, credit risk management system, or to the allowance assessment methodology used to estimate loan loss exposure as reported in Note 4, "Allowance for Loan Losses," to the Company's audited consolidated financial statements contained the 2018 Annual Report on Form 10-K. 

The allowance for loan losses to total loans ratio was 1.42% at both June 30, 2019 and December 31, 2018, and 1.51% at June 30, 2018. General improvement in credit metrics, partially offset by individual loan downgrades to adversely classified and impaired loans requiring additional specific reserves due to individual business circumstances, have contributed to the gradual decline in the allowance to total loans ratio since the prior year. Based on the foregoing, as well as management's judgment as to the existing credit risks inherent in the loan portfolio, as discussed above under the headings "Credit Risk" and "Asset Quality," management believes that the Company's allowance for loan losses is adequate to absorb probable losses from specifically known and other probable credit risks associated with the portfolio as of June 30, 2019.

48

The following table summarizes the activity in the allowance for loan losses for the periods indicated: 

	Six Months Ended June 30,
(Dollars in thousands)	2019			2018
Balance at beginning of year	$	33,849		$	32,915
Provision charged to operations	555			1,900
Recoveries on charged-off loans:
Commercial real estate	—			—
Commercial and industrial	456			165
Commercial construction	—			—
Residential mortgages	—			—
Home equity	5			1
Consumer	13			17
Total recovered	474			183
Charged-off loans
Commercial real estate	—			—
Commercial and industrial	459			117
Commercial construction	—			—
Residential mortgages	—			—
Home equity	—			—
Consumer	68			84
Total charged-off	527			201
Net loans recovered	53			18
Ending balance	$	34,351		$	34,797
Annualized net loans recovered to average loans outstanding	—		%	—		%

See Note 4, "Allowance for Loan Losses," to the Company's unaudited consolidated interim financial statements, contained in Item 1 in this Form 10-Q, for further information regarding the allowance for loan losses and credit quality.

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Deposits

Total deposits amounted to $2.83 billion as of June 30, 2019, an increase of $265.4 million, or 10%, compared to December 31, 2018. Total deposits as a percentage of total assets were 89% at June 30, 2019 and 87% at December 31, 2018.

The following table sets forth the deposit balances by certain categories at the dates indicated and the percentage of each category to total deposits:

	June 30, 2019				December 31, 2018				June 30, 2018
(Dollars in thousands)	Amount		Percent		Amount		Percent		Amount		Percent
Non-interest checking	$	822,455	29.1	%	$	765,029	29.8	%	$	739,890	27.8	%
Interest-bearing checking	496,828		17.6	%	403,497		15.8	%	442,944		16.7	%
Total checking	1,319,283		46.7	%	1,168,526		45.6	%	1,182,834		44.5	%
Savings	209,477		7.3	%	193,214		7.5	%	198,666		7.5	%
Money markets	1,006,526		35.6	%	862,028		33.6	%	859,611		32.3	%
Total savings/money markets	1,216,003		42.9	%	1,055,242		41.1	%	1,058,277		39.8	%
Certificates of deposit (CDs)	294,862		10.4	%	284,231		11.1	%	240,443		9.0	%
Total customer deposits	2,830,148		100.0	%	2,507,999		97.8	%	2,481,554		93.3	%
Brokered deposits (1)	—		—	%	56,783		2.2	%	178,800		6.7	%
Total deposits	$	2,830,148	100.0	%	$	2,564,782	100.0	%	$	2,660,354	100.0	%

__________________________________________

(1) Brokered CDs $250,000 and under.

As of June 30, 2019, customer deposits increased $322.1 million, or 13%, since December 31, 2018, and $348.6 million, or 14%, since June 30, 2018. Since December 31, 2018, the largest growth occurred in checking and money market accounts and includes several relationships which had large short-term balances.

Total customer deposits include reciprocal deposits from checking, money market deposits and CDs received from participating banks in nationwide deposit networks as a result of our customers electing to participate in Company offered programs which allow for enhanced FDIC insurance. Essentially, the equivalent of the original customers' deposited funds comes back to the Company and are carried within the appropriate category under total customer deposits. The Company's balances in these reciprocal products were $412.0 million, $342.4 million and $301.9 million at June 30, 2019, December 31, 2018 and June 30, 2018, respectively.

Management utilizes brokered deposits as cost effective wholesale funding sources to support continued loan growth and as part of the Company's asset-liability management strategy to protect against rising rates. Brokered deposits may be comprised of non-reciprocal insured overnight or selected term funding gathered from nationwide bank networks or from large money center banks; however, at December 31, 2018, and June 30, 2018 brokered deposits were comprised only of brokered CDs. As of June 30, 2019, the Company had no brokered deposits. See also "Wholesale Funding" below.

Borrowed Funds

The Company had borrowed funds outstanding of $484 thousand at June 30, 2019 linked to outstanding commercial loans under a community reinvestment program of the FHLB. At December 31, 2018 and June 30, 2018, borrowed funds outstanding, comprised wholly of FHLB borrowings, amounted to $100.5 million and $501 thousand, respectively.

At June 30, 2019, the Bank had the capacity to borrow additional funds from the FHLB of up to approximately $635.0 million and capacity to borrow from the FRB Discount Window of approximately $155.0 million.

Wholesale Funding

Wholesale funding includes brokered deposits and borrowed funds as discussed above. Since December 31, 2018, wholesale funding has decreased $156.8 million, as customer deposit growth has exceeded loan growth.

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The following table sets forth the breakout of wholesale funding by composition at the dates indicated and the percentage of each category to total wholesale funding:

	June 30, 2019				December 31, 2018				June 30, 2018
(Dollars in thousands)	Amount		Percent		Amount		Percent		Amount		Percent
Brokered deposits	$	—	—	%	$	56,783	36.1	%	$	178,800	99.7	%
Borrowed funds	484		100.0	%	100,492		63.9	%	501		0.3	%
Wholesale funding	$	484	100.0	%	$	157,275	100.0	%	$	179,301	100.0	%

See "Liquidity" below for additional information.

Subordinated Debt

The Company had outstanding subordinated debt of $14.9 million (net of deferred issuance costs) at June 30, 2019, December 31, 2018 and June 30, 2018, which consisted of $15.0 million in aggregate principal amount of Fixed-to-Floating Rate Subordinated Notes issued in January 2015, in a private placement to an accredited investor. See also Note 7, "Borrowed Funds and Subordinated Debt," to the Company's unaudited consolidated interim financial statements contained in Item 1 above, for further information regarding the Company's subordinated debt.

Liquidity

Liquidity is the ability to meet cash needs arising from, among other things, fluctuations in loans, investments, deposits and borrowings.  Liquidity management is the coordination of activities so that cash needs are anticipated and met readily and efficiently.  The Company's liquidity policies are set and monitored by the Company's Board of directors (the "Board").  The duties and responsibilities related to asset-liability management matters are also covered by the Board. The Company's asset-liability objectives are to engage in sound balance sheet management strategies, maintain liquidity, provide and enhance access to a diverse and stable source of funds, provide competitively priced and attractive products to customers and conduct funding at a low-cost relative to current market conditions.  Funds gathered are used to support current commitments, to fund earning asset growth, and to take advantage of selected leverage opportunities.

The Company's liquidity is maintained by projecting cash needs, balancing maturing assets with maturing liabilities, monitoring various liquidity ratios, monitoring deposit flows, maintaining cash flow within the investment portfolio, and maintaining wholesale funding resources. 

At June 30, 2019, the Company's wholesale funding sources primarily included borrowing capacity at the FHLB and brokered deposits. In addition, the Company maintains overnight fed fund purchase arrangements with correspondent banks and has access to the FRB Discount Window.

Management believes that the Company has adequate liquidity to meet its obligations. However, if, general economic conditions or other events, causes these sources of external funding to become restricted or are eliminated, the Company may not be able to raise adequate funds or may incur substantially higher funding costs or operating restrictions in order to raise the necessary funds to support the Company's operations and growth.

The Company has in the past also increased capital and liquidity by offering shares of the Company's common stock for sale to its existing stockholders and new investors and through the issuance of subordinated debt. See "Capital Resources," below, for information on the Company's capital planning.

Capital Resources

Capital planning by the Company and the Bank considers current needs and anticipated future growth. Ongoing sources of capital include the retention of earnings, less dividends paid, proceeds from the exercise of employee stock options and proceeds from purchases of shares pursuant to the Company's dividend reinvestment plan and direct stock purchase plan (together, the "DRSPP"). Additional sources of capital for the Company and the Bank have been proceeds from the issuance of common stock and proceeds from the issuance of subordinated debt. The Company believes its current capital is adequate to support ongoing operations.

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Management believes, as of June 30, 2019, that the Company and the Bank met all capital adequacy requirements to which they were subject. As of June 30, 2019, the Company met the definition of "well capitalized" under the applicable Federal Reserve Board regulations and the Bank qualified as "well capitalized" under the prompt corrective action regulations of Basel III and the FDIC.

The Company's and the Bank's actual capital amounts and ratios are presented as of June 30, 2019 in the tables below:

	Actual				Minimum Capital for Capital Adequacy Purposes(1)				Minimum Capital To Be Well Capitalized(2)
(Dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio
The Company
Total Capital (to risk weighted assets)	$	312,483	12.02	%	$	207,901	8.00	%	N/A		N/A
Tier 1 Capital (to risk weighted assets)	$	265,109	10.20	%	$	155,926	6.00	%	N/A		N/A
Tier 1 Capital (to average assets) or Leverage ratio	$	265,109	8.61	%	$	123,101	4.00	%	N/A		N/A
Common equity tier 1 capital (to risk weighted assets)	$	265,109	10.20	%	$	116,944	4.50	%	N/A		N/A
The Bank
Total Capital (to risk weighted assets)	$	312,162	12.01	%	$	207,901	8.00	%	$	259,876	10.00	%
Tier 1 Capital (to risk weighted assets)	$	279,654	10.76	%	$	155,926	6.00	%	$	207,901	8.00	%
Tier 1 Capital (to average assets) or Leverage ratio	$	279,654	9.09	%	$	123,109	4.00	%	$	153,887	5.00	%
Common equity tier 1 capital (to risk weighted assets)	$	279,654	10.76	%	$	116,944	4.50	%	$	168,919	6.50	%

_________________________________________

(1) Before application of the capital conservation buffer of 2.50% as of June 30, 2019, see discussion below.

(2)For the Bank to qualify as "well capitalized," it must maintain at least the minimum ratios listed.  This prompt corrective action framework does not apply to the Company.

The Company is subject to the Basel III capital ratio requirements which include a "capital conservation buffer" of 2.50% above the regulatory minimum risk-based capital adequacy requirements shown above. The capital conservation buffer requirement, which had a phase-in implementation period, was fully implemented on January 1, 2019. If a banking organization dips into its capital conservation buffer it may be restricted in its ability to pay dividends and discretionary bonus payments to its executive officers. Both the Company's and the Bank's actual ratios, as outlined in the table above, exceeded the Basel III risk-based capital requirement with the capital conservation buffer as of June 30, 2019.

The Basel III minimum capital ratio requirements as applicable to the Company and the Bank at June 30, 2019 are summarized in the table below:

	Basel III Minimum for Capital Adequacy Purposes	Basel III Additional Capital Conservation Buffer	Basel III "Adequate" Ratio with Capital Conservation Buffer
Total Capital (to risk weighted assets)	8.00%	2.50%	10.50%
Tier 1 Capital (to risk weighted assets)	6.00%	2.50%	8.50%
Tier 1 Capital (to average assets) or Leverage ratio	4.00%	—%	4.00%
Common equity tier 1 capital (to risk weighted assets)	4.50%	2.50%	7.00%

The Company's DRSPP enables stockholders, at their discretion, to elect to reinvest cash dividends paid on their shares of the Company's common stock by purchasing additional shares of common stock from the Company at a purchase price equal to fair market value.  Under the DRSPP, stockholders and new investors also have the opportunity to purchase shares of the Company's common stock without brokerage fees, subject to monthly minimums and maximums.

For the six months endedJune 30, 2019, the Company paid $3.8 million in cash dividends. Stockholders utilized the dividend reinvestment portion of the DRSPP to purchase an aggregate of 19,844 shares of the Company's common stock, totaling $592 thousand. The direct purchase component of the DRSPP was used by stockholders to purchase 774 shares of the Company's common stock, totaling $23 thousand, during the six months endedJune 30, 2019.

52

On July 16, 2019, the Company announced a quarterly dividend of $0.16 per share to be paid on September 3, 2019 to stockholders of record as of August 13, 2019.

For further information about the Company's capital, see Note 9 and Note 10, both titled "Stockholders' Equity," to the Company's unaudited consolidated interim financial statements contained in Item 1 of this Form 10-Q and to the Company's audited consolidated financial statements contained in the Company's 2018 Annual Report on Form 10-K, respectively.

Assets Under Management

Total assets under management includes total assets, loans serviced for others and investment assets under management. Loans serviced for others and investment assets under management are not carried as assets on the Company's consolidated balance sheet, and as such, total assets under management is not a financial measurement recognized under GAAP, however management believes its disclosure provides information useful in understanding the trends in total assets under management.

The Company provides a wide range of wealth management and wealth services, including brokerage, trust, and investment management.  Also included in the investment assets under management total are customers' commercial sweep arrangements that are invested in third-party money market mutual funds.

As of June 30, 2019, investment assets under management, which are reflected at fair market value, increased $56.4 million, or 7%, since December 31, 2018 and increased $9.0 million, or 1%, since June 30, 2018. 

As of June 30, 2019, total assets under management increased $257.0 million, or 7%, since December 31, 2018 and $236.8 million, or 6%, since June 30, 2018.

The following table sets forth the value of assets under management and its components at the dates indicated: 

(Dollars in thousands)	June 30, 2019		December 31, 2018		June 30, 2018
Total assets	$	3,167,518	$	2,964,358	$	2,933,963
Loans serviced for others	86,677		89,232		92,465
Investment assets under management	857,187		800,751		848,181
Total assets under management	$	4,111,382	$	3,854,341	$	3,874,609

Results of Operations

Three Months Ended June 30, 2019 vs. Three Months Ended June 30, 2018

Unless otherwise indicated, the reported results are for the three months ended June 30, 2019 with the "same period," the "comparable period," and "prior period" being the three months ended June 30, 2018. Average yields are presented on an annualized tax equivalent basis.

The Company's net income for the second quarter of 2019 amounted to $7.8 million, compared to $7.6 million for the same period in 2018, an increase of $189 thousand, or 2%.  Diluted earnings per share were $0.66 and $0.64 for the three months ended June 30, 2019 and June 30, 2018, respectively, an increase of 3%.

Net Interest Income and Margin

The Company's net interest income for the quarter ended June 30, 2019 amounted to $28.8 million, compared to $27.2 million for the quarter ended June 30, 2018, an increase of $1.6 million, or 6%.  The increase in net interest income over the comparable period was due largely to interest-earning asset growth, primarily in loans.

The Company's net interest margin was 3.91% for three months ended June 30, 2019, compared to 3.96% for the quarter ended June 30, 2018. Margin was 3.92% for the quarter ended March 31, 2019. Margin has decreased compared to the June 2018 quarter due primarily to the average cost of funding increasing faster than interest-earning asset yields over the period. Additionally, interest-earning asset yields were impacted by higher balances in lower-yielding short-term investments in the current quarter, due to increased excess cash from strong deposit growth, which exceeded loan growth, as compared to the same period in the prior year.

53

Tax equivalent net interest income for the three months ended June 30, 2019 was $29.2 million compared to $27.7 million for the three months ended June 30, 2018, an increase of $1.5 million, or 5%. TE margin was 3.96% for the three months ended June 30, 2019 compared to 4.03% for the three months ended June 30, 2018. The quarter-to-date March 31, 2019 TE margin was 3.98%.

Interest and Dividend Income

For the second quarter of 2019, total interest and dividend income amounted to $34.3 million, an increase of $4.0 million, or 13%, compared to the prior period.  The increase resulted primarily from a 28 basis point increase in the average tax equivalent loan yield and an increase of $99.8 million, or 4%, in average loan balances. The yield on loans has increased since the prior period primarily from increases in market rates and loans repricing at higher rates.

Interest Expense

For the three months ended June 30, 2019, total interest expense amounted to $5.5 million, an increase of $2.4 million over the same period in 2018 due primarily to increases in the deposit market rates. The average cost of checking, saving and money markets increased 54 basis points and the average cost of CDs increased 63 basis points. Partially offsetting the impact of higher deposit market rates and growth in deposits, were lower average balances on higher-costing brokered CDs as the remaining maturing balances were not renewed within the quarter due to increases in lower-costing deposits.

Non-interest bearing checking accounts are an important component of the Company's core funding strategy.  For the three months ended June 30, 2019, the average balance of non-interest bearing checking accounts increased $39.9 million, or 5%, as compared to the same period in 2018, and represented 28% and 29% of total average deposit balances for the three months ended June 30, 2019 and June 30, 2018, respectively.

Interest rate risk is reviewed in detail under the heading Item 3, "Quantitative and Qualitative Disclosures About Market Risk," below.

54

Rate / Volume Analysis

The following table sets forth, on a tax-equivalent basis, the extent to which changes in interest rates and changes in the average balances of interest-earning assets and interest-bearing liabilities have affected interest income and expense during the three months ended June 30, 2019 compared to the three months ended June 30, 2018.  For each category of interest-earning assets and interest-bearing liabilities, information is provided on changes attributable to: (1) volume (change in average portfolio balance multiplied by prior period average rate); and (2) interest rate (change in average interest rate multiplied by prior period average balance). Changes attributable to the combined impact of volume and rate have been allocated proportionately based on absolute value to the changes due to volume and the changes due to rate.

				Increase (decrease) due to
(Dollars in thousands)	Net Change			Volume			Rate
Interest Income
Loans and loans held for sale (tax-equivalent)	$	2,875		$	1,141		$	1,734
Investment securities (tax-equivalent)	636			231			405
Other interest-earning assets (1)	410			376			34
Total interest-earning assets (tax-equivalent)	3,921			1,748			2,173
Interest Expense
Interest checking, savings and money market	2,449			248			2,201
Certificates of deposit	677			248			429
Brokered CDs	(671		)	(746		)	75
Borrowed funds	(34		)	(16		)	(18		)
Total interest-bearing funding	2,421			(266		)	2,687
Change in net interest income (tax-equivalent)	$	1,500		$	2,014		$	(514	)

__________________________________________

(1) Income on other interest-earning assets includes interest on deposits and fed funds sold, and dividends on FHLB stock.

55

The following table presents the Company's average balance sheet, net interest income and average rates for the three months ended June 30, 2019 and 2018:

AVERAGE BALANCES, INTEREST AND AVERAGE YIELDS

	Three months ended June 30, 2019						Three months ended June 30, 2018
(Dollars in thousands)	Average Balance		Interest(1)		Average Yield(1)		Average Balance		Interest(1)		Average Yield(1)
Assets:
Loans and loans held for sale (2) (tax equivalent)	$	2,394,688	$	30,557	5.12	%	$	2,294,931	$	27,682	4.84	%
Investments (3) (tax equivalent)	458,316		3,547		3.10	%	425,373		2,911		2.74	%
Other interest-earning assets (4)	98,994		597		2.42	%	35,936		187		2.09	%
Total interest-earning assets (tax equivalent)	2,951,998		34,701		4.71	%	2,756,240		30,780		4.48	%
Other assets	133,269						97,524
Total assets	$	3,085,267					$	2,853,764
Liabilities and stockholders' equity:
Interest checking, savings and money market	$	1,675,636	3,741		0.90	%	$	1,433,531	1,292		0.36	%
Certificates of deposit	294,756		1,472		2.00	%	232,872		795		1.37	%
Brokered CDs	16,735		79		1.89	%	176,700		750		1.70	%
Borrowed funds	485		—		—	%	7,164		34		1.90	%
Subordinated debt (5)	14,864		231		6.22	%	14,851		231		6.23	%
Total interest-bearing funding	2,002,476		5,523		1.11	%	1,865,118		3,102		0.67	%
Net interest-rate spread (tax equivalent)					3.60	%					3.81	%
Non-interest checking	777,564		—				737,656		—
Total deposits, borrowed funds and subordinated debt	2,780,040		5,523		0.80	%	2,602,774		3,102		0.48	%
Other liabilities	33,645						17,659
Total liabilities	2,813,685						2,620,433
Stockholders' equity	271,582						233,331
Total liabilities and stockholders' equity	$	3,085,267					$	2,853,764
Net interest income (tax equivalent)			29,178						27,678
Net interest margin (tax equivalent)					3.96	%					4.03	%
Less tax equivalent adjustment			400						460
Net interest income			$	28,778					$	27,218
Net interest margin					3.91	%					3.96	%

__________________________________________

(1) Average yields and interest income are presented on a tax equivalent basis, calculated using a U.S federal income tax rate of 21% in both 2019 and 2018, based on tax equivalent adjustments associated with tax exempt loans and investments interest income.

(2) Average loans and loans held for sale include non-accrual loans and are net of average deferred loan fees.

(3) Average investments are presented at average amortized cost.

(4) Average other interest-earning assets include interest-earning deposits, fed funds sold and FHLB stock.

(5) The subordinated debt is net of average deferred debt issuance costs.

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Provision for Loan Loss

The provision for loan losses amounted to $955 thousand for the three months ended June 30, 2019, an increase of $655 thousand, compared to the prior period.  The increase in the provision in the second quarter of 2019 was due to the higher levels of: loan growth; reserves necessary for credit impaired and classified commercial relationships; and net charge-offs compared to the same three month period in 2018.

The provision for loan losses is a significant factor in the Company's operating results. For further discussion regarding the provision for loan losses and management's assessment of the adequacy of the allowance for loan losses see "Credit Risk," "Asset Quality," and "Allowance for Loan Losses" under "Financial Condition" in this Item 2 above, and "Credit Risk," "Asset Quality," and "Allowance for Loan Losses" in the Financial Condition section of Management's Discussion and Analysis of Financial Condition and Results of Operations in the Company's 2018 Annual Report on Form 10-K.

There have been no material changes to the Company's underwriting practices or to the allowance for loan loss methodology used to estimate loan loss exposure as reported in the Company's 2018 Annual Report on Form 10-K.

Non-Interest Income

Non-interest income for the three months ended June 30, 2019 amounted to $4.0 million, an increase of $307 thousand, or 8%, as compared to the same period in 2018. The primary components of the quarter over quarter change related to increases in deposit and interchange fees and net gains on sales of investments.

Non-Interest Expense

Non-interest expense for the three months ended June 30, 2019 amounted to $21.8 million, an increase of $945 thousand, or 5%, compared to the prior period. The increase primarily related to increases in salaries and employee benefits expenses which increased$774 thousand, or 6%, primarily to support the Company's strategic growth initiatives since the prior period, partially offset by lower advertising and public relations expenses for the three months ended June 30, 2019 by $242 thousand, or 22%, mainly due to the timing of the Company's bi-annual corporate community event last held during the second quarter of 2018.

Income Taxes

The effective tax rate for the three months ended June 30, 2019 was 23.2%, compared to 23.1% for the three months ended June 30, 2018.

Results of Operations

Six Months Ended June 30, 2019 vs. Six Months Ended June 30, 2018

Unless otherwise indicated, the reported results are for the six months endedJune 30, 2019 with the "same period," the "comparable period," "prior year," and "prior period" being the six months endedJune 30, 2018. Average yields are presented on an annualized tax equivalent basis.

The Company's net income for the six months endedJune 30, 2019 amounted to $16.5 million, compared to $14.4 million for the same period in 2018, an increase of $2.1 million, or 14%.  Diluted earnings per share were $1.39 and $1.23 for the six months endedJune 30, 2019 and June 30, 2018, respectively, an increase of 13%.

Net Interest Income and Margin

The Company's net interest income for the six months endedJune 30, 2019 was $56.9 million, compared to $53.2 million for the six months endedJune 30, 2018, an increase of $3.6 million, or 7%.  The increase in net interest income over the comparable period was due largely to interest-earning asset growth, primarily in loans.

The Company's margin was 3.91% for the six months endedJune 30, 2019 compared to 3.92% for the six months endedJune 30, 2018. Interest-earning assets yields increased at approximately the same pace as the cost of funds over the comparable period. Year-to-date June 30, 2019 interest-earning asset yields were impacted by higher balances in lower-yielding short-term investments in 2019, due to increased excess cash from strong deposit growth, which exceeded loan growth, as compared to the same period in the prior year.

Tax equivalent net interest income for the six months endedJune 30, 2019 was $57.7 million compared to $54.2 million for the

57

six months endedJune 30, 2018, an increase of $3.5 million, or 7%.  TE margin was 3.97% for the six months endedJune 30, 2019 compared to 3.99% for the six months endedJune 30, 2018.

Interest and Dividend Income

Total interest and dividend income amounted to $67.6 million for the six months endedJune 30, 2019, an increase of $8.5 million, or 14%, compared to the prior period.  The increase resulted primarily from loans and loans held for sale including a 34 basis point increase in average tax equivalent loan yields, as well as a $99.3 million, or 4%, increase in average loan balances. The yield on loans has increased since the prior period primarily from increases in market rates and loans repricing at higher rates.

Interest Expense

For the six months endedJune 30, 2019, total interest expense amounted to $10.7 million, an increase of $4.9 million over the same period in 2018 due primarily to increases in the deposit market rates. The average cost of checking, saving and money markets increased 52 basis points and the average cost of CDs increased 64 basis points. Partially offsetting the impact of higher deposit market rates and growth in deposits, were lower average balances on higher-costing brokered CDs as the remaining maturing balances were not renewed in 2019 due to increases in lower-costing deposits.

Non-interest checking accounts are an important component of the Company's core funding strategy. For the six months endedJune 30, 2019, the average balance of non-interest checking accounts increased$41.2 million, or 6%, as compared to the same period in 2018, and represented 28% of total average deposit balances for the six months endedJune 30, 2019 compared to 29% of total average deposit balances for the six months endedJune 30, 2018.

Interest-rate risk is reviewed in detail under the heading Item 3, "Quantitative and Qualitative Disclosures About Market Risk," below.

Rate / Volume Analysis

The following table sets forth, on a tax-equivalent basis, the extent to which changes in interest rates and changes in the average balances of interest-earning assets and interest-bearing liabilities have affected interest income and expense during the six months endedJune 30, 2019 compared to the six months endedJune 30, 2018.  For each category of interest-earning assets and interest-bearing liabilities, information is provided on changes attributable to: (1) volume (change in average portfolio balance multiplied by prior period average rate); and (2) interest rate (change in average interest rate multiplied by prior period average balance). Changes attributable to the combined impact of volume and rate have been allocated proportionately based on absolute value to the changes due to volume and the changes due to rate.

				Increase (decrease) due to
(Dollars in thousands)	Net Change			Volume			Rate
Interest Income
Loans and loans held for sale (tax equivalent)	$	6,333		$	2,226		$	4,107
Investment securities (tax equivalent)	1,333			493			840
Other interest-earning assets (1)	735			668			67
Total interest-earning assets (tax equivalent)	8,401			3,387			5,014
Interest Expense
Interest checking, savings and money market	4,570			411			4,159
Certificates of deposit	1,399			544			855
Brokered CDs	(1,044		)	(1,282		)	238
Borrowed funds	(47		)	(193		)	146
Total interest-bearing funding	4,878			(520		)	5,398
Change in net interest income (tax equivalent)	$	3,523		$	3,907		$	(384	)

_________________________________

(1) Income on other interest-earning assets includes interest on deposits and fed funds sold, and dividends on FHLB stock.

58

The following table presents the Company's average balance sheet, net interest income and average rates for the six months endedJune 30, 2019 and 2018: 

AVERAGE BALANCES, INTEREST AND AVERAGE YIELDS

	Six months ended June 30, 2019						Six months ended June 30, 2018
(Dollars in thousands)	Average Balance		Interest(1)		Average Yield(1)		Average Balance		Interest(1)		Average Yield(1)
Assets:
Loans and loans held for sale(2) (tax equivalent)	$	2,383,928	$	60,314	5.10	%	$	2,284,674	$	53,981	4.76	%
Investment securities(3) (tax equivalent)	454,885		7,040		3.10	%	419,650		5,707		2.72	%
Other interest-earning assets(4)	85,629		1,056		2.49	%	30,661		321		2.11	%
Total interest-earnings assets (tax equivalent)	2,924,442		68,410		4.71	%	2,734,985		60,009		4.42	%
Other assets	129,291						98,391
Total assets	$	3,053,733					$	2,833,376
Liabilities and stockholders' equity:
Interest checking, savings and money market	$	1,624,366	6,878		0.85	%	$	1,405,729	2,308		0.33	%
CDs	294,939		2,829		1.93	%	224,234		1,430		1.29	%
Brokered CDs	31,188		291		1.88	%	174,233		1,335		1.55	%
Borrowed funds	21,361		279		2.64	%	40,061		326		1.64	%
Subordinated debt(5)	14,863		459		6.23	%	14,850		459		6.23	%
Total interest-bearing funding	1,986,717		10,736		1.09	%	1,859,107		5,858		0.64	%
Net interest-rate spread (tax equivalent)					3.62	%					3.78	%
Non-interest checking	764,718		—				723,542		—
Total deposits, borrowed funds and subordinated debt	2,751,435		10,736		0.79	%	2,582,649		5,858		0.46	%
Other liabilities	36,673						18,676
Total liabilities	2,788,108						2,601,325
Stockholders' equity	265,625						232,051
Total liabilities and stockholders' equity	$	3,053,733					$	2,833,376
Net interest income (tax equivalent)			57,674						54,151
Net interest margin (tax equivalent)					3.97	%					3.99	%
Less tax equivalent adjustment			812						918
Net interest income			$	56,862					$	53,233
Net interest margin					3.91	%					3.92	%

_______________________________

(1) Average yields and interest income are presented on a tax equivalent basis, calculated using a U.S federal income tax rate of 21% in both 2019 and 2018, based on tax equivalent adjustments associated with tax exempt loans and investments interest income.

(2) Average loans and loans held for sale include non-accrual loans and are net of average deferred loan fees.

(3) Average investment balances are presented at average amortized cost.

(4) Average other interest-earning assets includes interest-earning deposits, fed funds sold, and FHLB stock.

(5) The subordinated debt is net of average deferred debt issuance costs.

59

Provision for Loan Loss

For the six months endedJune 30, 2019, the provision for loan losses amounted to $555 thousand, a decrease of $1.3 million, compared to the same period in 2018.  The decrease compared to the prior year was due primarily to generally improved credit metrics compared to the prior year period. The 2018 period was impacted by credit deterioration of several impaired and classified commercial relationships and the level of loan growth, primarily during the first quarter of that period.

The provision for loan losses is a significant factor in the Company's operating results. For further discussion regarding the provision for loan losses and management's assessment of the adequacy of the allowance for loan losses see "Credit Risk," "Asset Quality," and "Allowance for Loan Losses" under "Financial Condition" in this Item 2, above, and "Credit Risk," "Asset Quality," and "Allowance for Loan Losses" in the Financial Condition section of Management's Discussion and Analysis of Financial Condition and Results of Operations in the Company's 2018 Annual Report on Form 10-K.

There have been no material changes to the Company's underwriting practices or to the allowance for loan loss methodology used to estimate loan loss exposure as reported in the Company's 2018 Annual Report on Form 10-K.

Non-Interest Income

Non-interest income for the six months endedJune 30, 2019 amounted to $7.9 million, an increase of $352 thousand, or 5%, compared to the six months endedJune 30, 2018. Non-interest income increased in 2019 due primarily to increases in deposit and interchange fees, net gains on sales of investments, and net gains on fair value adjustments of equity securities, which is included in other income, partially offset by lower wealth management income.

Non-Interest Expense

Non-interest expense for the six months endedJune 30, 2019 amounted to $42.6 million, an increase of $2.3 million, or 6%, compared to the same period in 2018.  The increase primarily related to salaries and employee benefits expenses which increased$2.1 million, or 8%, primarily to support the Company's strategic growth initiatives since the prior period.

Income Taxes

The effective tax rate for the six months endedJune 30, 2019 was 23.7%, compared to 22.6% for the six months endedJune 30, 2018. The increase in the effective tax rate is primarily related to lower tax benefits arising from permanent tax differences and discrete tax items during the six months endedJune 30, 2019, as compared to the same prior year period.

Risk Factors and Risk Management Framework

This Form 10-Q outlines certain key risks of the Company including credit risk, liquidity management and interest-rate risk. Credit risk management is reviewed in detail in this Item 2 under the heading "Credit Risk." Liquidity management is the coordination of activities so that cash needs are anticipated and met, readily and efficiently. Liquidity management is reviewed in this Item 7 under the heading "Liquidity." Interest-rate risk is reviewed under Item 3, "Quantitative and Qualitative Disclosures About Market Risk," below. In addition to the risks outlined in this Form 10-Q, numerous other factors that could adversely affect the Company's future results of operations and financial condition, and its reputation and business model are addressed in Item 1A, "Risk Factors," of the Company's 2018 Annual Report on Form 10-K.

Management utilizes a comprehensive risk management framework which enables the aggregation of risks across the Company and provides reasonable assurance that management has the tools, programs and processes in place to support informed decision making, anticipate risks before they materialize and maintain the Company's risk profile consistent with its strategic planning, and applicable laws and regulations.

The Company's enterprise risk management and operational risk management framework provides a structured approach for identifying, assessing and managing risks in a coordinated manner, which includes, but is not limited to: credit risk, market and interest-rate risk, legal and regulatory compliance risk, reputational risk, strategic risk, liquidity management, information security, internal controls over financial reporting, physical security, loss and fraud prevention, policy reviews, third party vendor management and contract management, business continuity planning, short and long-term capital projects and facility planning, and corporate governance. See Item 1, "Business," under the "Risk Management Framework," section of the Company's 2018 Annual Report on Form 10-K for additional information.

60

Accounting Policies/Critical Accounting Estimates

As discussed in the Company's 2018 Annual Report on Form 10-K, the three most significant areas in which management applies critical assumptions and estimates that are particularly susceptible to change relate to the determination of the allowance for loan losses, impairment review of investment securities and the impairment review of goodwill.  The Company has not materially changed its significant accounting and reporting policies from those disclosed in its 2018 Annual Report on Form 10-K.

Recent Accounting Pronouncements

See Note 1, Item (f), "Recent Accounting Pronouncements" to the Company's unaudited consolidated interim financial statements in this Form 10-Q for information regarding recent accounting pronouncements.

Item 3 - Quantitative and Qualitative Disclosures About Market Risk

There have been no material changes in the results of the Company's net interest income sensitivity analysis as reported in the Company's 2018 Annual Report on Form 10-K. The Company can be subject to margin compression depending on the economic environment and the shape of the yield curve. Under the Company's current balance sheet position, the Company's margin generally performs slightly better over time in a rising rate environment, while it generally decreases in a declining rate environment and when the yield curve is flattening or inverted. At June 30, 2019, the Company's primary interest-rate risk exposure continues to be margin compression that may result from changes in interest rates and/or changes in the mix of the Company's balance sheet components. This would include the mix of fixed versus variable rate loans and investments within assets, and higher cost versus lower cost deposits and overnight borrowings versus term borrowings and certificates of deposit within liabilities. Refer to heading "Results of Operations" contained within Item 2, "Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Form 10-Q for further discussion of margin.

Item 4 - Controls and Procedures

Evaluation of Disclosure Controls and Procedures

The Company maintains a set of disclosure controls and procedures and internal controls designed to ensure that the information required to be disclosed in reports that it files or furnishes to the SEC under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), is recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms.

The Company carried out an evaluation as of the end of the period covered by this Form 10-Q under the supervision and with the participation of the Company's management, including its principal executive officer and principal financial officer, of the effectiveness of the design and operation of the Company's disclosure controls and procedures pursuant to Exchange Act Rule 13a-15(b).  Based upon that evaluation, the Company's principal executive officer and principal financial officer concluded that the Company's disclosure controls and procedures are effective as of June 30, 2019.

Changes in Internal Control over Financial Reporting

There has been no change in the Company's internal control over financial reporting that has occurred during the Company's most recent fiscal quarter (i.e., the three months ended June 30, 2019) that has materially affected, or is reasonably likely to materially affect, the Company's internal control over financial reporting.

61

PART II - OTHER INFORMATION

Item 1 - Legal Proceedings

There are no material pending legal proceedings to which the Company or its subsidiaries are a party or to which any of its property is subject, other than ordinary routine litigation incidental to the business of the Company. Management does not believe resolution of any present litigation will have a material adverse effect on the business, consolidated financial condition or results of operations of the Company.

Item 1A - Risk Factors

Management believes that there have been no material changes in the Company's risk factors as reported in the Company's 2018 Annual Report on Form 10-K.

Item 2 - Unregistered Sales of Equity Securities and Use of Proceeds

The following table represents information with respect to repurchases of common stock made by the Company during the three months ended June 30, 2019:

	Total number of shares repurchased (1)	Average Price Paid Per Share	Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs Announced	Maximum Number of Shares that May Yet Be Purchased Under the Plans or Programs
April	3,828	$29.51	—	—
May	—	—	—	—
June	—	—	—	—

(1) Amounts include shares repurchased that were not part of a publicly announced repurchase plan or program. These shares were owned and tendered by employees as payment for taxes upon vesting of restricted stock (net settlement of shares).

Item 3 - Defaults upon Senior Securities

Not Applicable.

Item 4 - Mine Safety Disclosures

Not Applicable.

Item 5 - Other Information

Not Applicable.

62

Item 6 - Exhibits

EXHIBIT INDEX

_____________

Exhibit No.Description

3.1.1 Amended and Restated Articles of Organization of the Company, as amended as of June 4, 2013 incorporated by reference to the Company's Current Report on Form 8-K filed June 10, 2013 (File No. 001-33912).

3.1.2 Articles of Amendment to the Restated Articles of Organization of the Company, as amended as of May 16, 2017 incorporated by reference to the Company's Current Report on Form 8-K filed May 18, 2017 (File No. 001-33912).

3.1.3 Articles of Amendment to the Amended and Restated Articles of Organization of the Company, as amended as of January 5, 2018, incorporated by reference to the Company’s Current Report on Form 8-K filed January 11, 2018 (File No. 001-33912).

3.2 Amended and Restated Bylaws of the Company, as amended as of January 15, 2013, incorporated by reference to Exhibit 3.2 to the Company's Current Report on Form 8-K filed on January 22, 2013 (File No. 001-33912).

10.1 Noncompetition Agreement dated as of May 19, 2014 by and among the Company, the Bank and Joseph R. Lussier, incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on June 20, 2019 (File No. 001-33912).

31.1* Certification of Principal Executive Officer under Securities Exchange Act Rule 13a-14(a)

31.2* Certification of Principal Financial Officer under Securities Exchange Act Rule 13a-14(a)

32* Certification of Principal Executive Officer and Principal Financial Officer under 18 U.S.C. § 1350 Furnished Pursuant to Securities Exchange Act Rule 13a-14(b)

101* The following materials from Enterprise Bancorp, Inc.'s Quarterly Report on Form 10-Q for the quarter ended June 30, 2019 were formatted in XBRL (eXtensible Business Reporting Language): (i) Consolidated Balance Sheets as of June 30, 2019 and December 31, 2018; (ii) Consolidated Statements of Income for the three and six months endedJune 30, 2019 and 2018; (iii) Consolidated Statements of Comprehensive Income for the three and six months endedJune 30, 2019 and 2018; (iv) Consolidated Statements of Changes in Equity for the three and six months endedJune 30, 2019 and 2018; (v) Consolidated Statements of Cash Flows for the six months endedJune 30, 2019 and 2018; and (vi) Notes to Unaudited Consolidated Interim Financial Statements.

____________________

*Filed herewith

63

SIGNATURES

Pursuant to the requirements 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.

		ENTERPRISE BANCORP, INC.
DATE:	August 7, 2019	By:	/s/ James A. Marcotte
			James A. Marcotte
			Executive Vice President,
			Chief Financial Officer and Treasurer
			(Principal Financial Officer)

64

EX-31.1

EXHIBIT 31.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

UNDER SECURITIES EXCHANGE ACT RULE 13a-14(a)

I, John P. Clancy, Jr., certify that:

1.I have reviewed this quarterly report on Form 10-Q of Enterprise Bancorp, Inc.;

2.Based on my knowledge, this 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 report;

3.Based on my knowledge, the financial statements, and other financial information included in this 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 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 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 evaluation; 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 fiscal 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 (or persons performing the equivalent functions):

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:	August 7, 2019	/s/ John P. Clancy, Jr.
		John P. Clancy, Jr.
		Chief Executive Officer (Principal Executive Officer)

EX-31.2

EXHIBIT 31.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

UNDER SECURITIES EXCHANGE ACT RULE 13a-14(a)

I, James A. Marcotte, certify that:

1.I have reviewed this quarterly report on Form 10-Q of Enterprise Bancorp, Inc.;

2.Based on my knowledge, this 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 report;

3.Based on my knowledge, the financial statements, and other financial information included in this 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 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 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 evaluation; 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 fiscal 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 (or persons performing the equivalent functions):

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:	August 7, 2019	/s/ James A. Marcotte
		James A. Marcotte
		Executive Vice President, Chief Financial Officer and Treasurer, (Principal Financial Officer)

EX-32

EXHIBIT 32

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER AND PRINCIPAL FINANCIAL OFFICER

UNDER 18 U.S.C. § 1350 FURNISHED PURSUANT TO SECURITIES EXCHANGE ACT RULE 13a-14(b)

In connection with the Quarterly Report of Enterprise Bancorp, Inc. (the "Company") on Form 10-Q for the period ended on June 30, 2019, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), each of the undersigned, in his respective capacities indicated below, hereby certifies, pursuant to 18 U.S.C. § 1350, as enacted by Section 906 of the Sarbanes-Oxley Act of 2002, that, to his knowledge and belief, (1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and (2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: August 7, 2019

/s/ John P. Clancy, Jr.

John P. Clancy, Jr.

Chief Executive Officer (Principal Executive Officer)

/s/ James A. Marcotte

James A. Marcotte

Executive Vice President, Chief Financial Officer and Treasurer (Principal Financial Officer)

A signed original of this written statement required by Section 906 has been provided to Enterprise Bancorp, Inc. and will be retained by Enterprise Bancorp, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Jul. 31, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	ENTERPRISE BANCORP INC /MA/
Entity Central Index Key	0001018399
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		11,804,987
Entity Current Reporting Status	Yes
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false

XML

Consolidated Balance Sheets - USD ($) $ in Thousands		Jun. 30, 2019	Dec. 31, 2018
Cash and cash equivalents:
Cash and due from banks		$ 46,918	$ 43,865
Interest-earning deposits		139,961	19,255
Total cash and cash equivalents		186,879	63,120
Investments:
Debt securities at fair value		465,944	431,473
Equity securities at fair value		2,428	1,448
Total investment securities at fair value		468,372	432,921
Federal Home Loan Bank (FHLB) stock		1,576	5,357
Loans held for sale		1,376	701
Loans, less allowance for loan losses of $34,351 at June 30, 2019 and $33,849 at December 31, 2018		2,379,751	2,353,657
Premises and equipment, net		39,575	37,588
Lease right-of-use asset		19,339	0
Accrued interest receivable		12,236	11,462
Deferred income taxes, net		8,711	11,747
Bank-owned life insurance		30,462	30,138
Prepaid income taxes		1,143	732
Prepaid expenses and other assets		12,442	11,279
Goodwill		5,656	5,656
Total assets		3,167,518	2,964,358
Deposits:
Customer deposits		2,830,148	2,507,999
Brokered deposits	[1]	0	56,783
Total deposits		2,830,148	2,564,782
Borrowed funds		484	100,492
Subordinated debt		14,866	14,860
Lease liability		18,382	0
Accrued expenses and other liabilities		22,049	27,948
Accrued interest payable		962	979
Total liabilities		2,886,891	2,709,061
Commitments and Contingencies
Stockholders' Equity
Preferred stock, $0.01 par value per share; 1,000,000 shares authorized; no shares issued		0	0
Common stock, $0.01 par value per share; 40,000,000 shares authorized; 11,806,008 shares issued and outstanding at June 30, 2019 and 11,708,218 shares issued and outstanding at December 31, 2018		118	117
Additional paid-in capital		92,767	91,281
Retained earnings		177,880	165,183
Accumulated other comprehensive income (loss)		9,862	(1,284)
Total stockholders' equity		280,627	255,297
Total liabilities and stockholders' equity		$ 3,167,518	$ 2,964,358

[1] Brokered CDs which are $250,000 and under.

XML

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Allowance for loan losses	$ 34,351	$ 33,729	$ 33,849	$ 34,797	$ 34,524	$ 32,915
Common stock, par value	$ 0.01		$ 0.01
Common stock, shares authorized	40,000,000		40,000,000
Common stock, shares issued	11,806,008		11,708,218
Common Stock, Shares, Outstanding	11,806,008		11,708,218
Preferred stock, par value	$ 0.01		$ 0.01
Preferred stock, shares authorized	1,000,000		1,000,000
Preferred stock, shares issued	0		0

XML

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Interest and dividend income:
Loans and loans held for sale	$ 30,419	$ 27,527	$ 60,035	$ 53,677
Investment securities	3,285	2,606	6,507	5,093
Other interest-earning assets	597	187	1,056	321
Total interest and dividend income	34,301	30,320	67,598	59,091
Interest expense:
Deposits	5,292	2,837	9,998	5,073
Borrowed funds	0	34	279	326
Subordinated debt	231	231	459	459
Total interest expense	5,523	3,102	10,736	5,858
Net interest income	28,778	27,218	56,862	53,233
Provision for loan losses	955	300	555	1,900
Net interest income after provision for loan losses	27,823	26,918	56,307	51,333
Non-interest income:
Wealth management fees	1,371	1,418	2,670	2,826
Deposit and interchange fees	1,687	1,567	3,251	3,056
Income on bank-owned life insurance, net	162	170	324	338
Net gains on sales of investment securities	147	0	146	1
Net gains on sales of loans	69	48	105	132
Other income	604	530	1,380	1,171
Total non-interest income	4,040	3,733	7,876	7,524
Non-interest expense:
Salaries and employee benefits	14,041	13,267	27,512	25,375
Occupancy and equipment expenses	2,096	2,037	4,308	4,194
Technology and telecommunications expenses	1,701	1,639	3,427	3,192
Advertising and public relations expenses	870	1,112	1,585	1,832
Audit, legal and other professional fees	438	419	861	926
Deposit insurance premiums	366	346	717	846
Supplies and postage expenses	262	266	486	498
Other operating expenses	1,979	1,722	3,707	3,392
Total non-interest expense	21,753	20,808	42,603	40,255
Income before income taxes	10,110	9,843	21,580	18,602
Provision for income taxes	2,347	2,269	5,121	4,203
Net income	$ 7,763	$ 7,574	$ 16,459	$ 14,399
Basic earnings per share	$ 0.66	$ 0.65	$ 1.40	$ 1.24
Diluted earnings per share	$ 0.66	$ 0.64	$ 1.39	$ 1.23
Basic weighted average common shares outstanding	11,798,942	11,687,182	11,764,901	11,658,046
Diluted weighted average common shares outstanding	11,834,507	11,764,411	11,808,833	11,733,391

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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 7,763	$ 7,574	$ 16,459	$ 14,399
Other comprehensive income (loss), net of taxes:
Gross unrealized holding gains (losses) on investments arising during the period	10,454	(1,035)	14,494	(9,104)
Income tax (expense) benefit	(2,327)	230	(3,234)	2,035
Net unrealized holding gains (losses), net of tax	8,127	(805)	11,260	(7,069)
Less: reclassification adjustment for net gains included in net income
Net realized gains on sales of securities during the period	147	0	146	1
Income tax expense	(32)	0	(32)	(1)
Reclassification adjustment for gains realized, net of tax	115	0	114	0
Total other comprehensive income (loss), net	8,012	(805)	11,146	(7,069)
Comprehensive income	$ 15,775	$ 6,769	$ 27,605	$ 7,330

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Consolidated Statement of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated other comprehensive (loss)/income, net
Balance, beginning at Dec. 31, 2017	$ 231,810	$ 116	$ 88,205	$ 143,073	$ 416
Balance, beginning, shares, outstanding at Dec. 31, 2017		11,609,853
Increase (Decrease) in Stockholders' Equity
Net income	6,825			6,825
Other comprehensive income (loss), net	(6,264)				(6,264)
Common stock dividend paid	(1,686)			(1,686)
Common stock issued under dividend reinvestment plan, shares		12,765
Common stock issued under dividend reinvestment plan	397	$ 0	397
Common stock issued, shares, other		1,138
Common stock issued, other	38	$ 0	38
Stock-based compensation, shares		51,488
Stock-based compensation	591	$ 1	590
Net settlement for employee taxes on restricted stock and options, shares		(7,561)
Net settlement for employee taxes on restricted stock and options	(286)	$ 0	(286)
Stock options exercised, net, shares		15,231
Stock options exercised, net	215	$ 0	215
Balance, ending at Mar. 31, 2018	231,640	$ 117	89,159	148,212	(5,848)
Balance, ending, shares, outstanding at Mar. 31, 2018		11,682,914
Balance, beginning at Dec. 31, 2017	231,810	$ 116	88,205	143,073	416
Balance, beginning, shares, outstanding at Dec. 31, 2017		11,609,853
Increase (Decrease) in Stockholders' Equity
Net income	14,399
Other comprehensive income (loss), net	(7,069)
Balance, ending at Jun. 30, 2018	237,577	$ 117	90,019	154,094	(6,653)
Balance, ending, shares, outstanding at Jun. 30, 2018		11,696,204
Balance, beginning at Mar. 31, 2018	231,640	$ 117	89,159	148,212	(5,848)
Balance, beginning, shares, outstanding at Mar. 31, 2018		11,682,914
Increase (Decrease) in Stockholders' Equity
Net income	7,574			7,574
Other comprehensive income (loss), net	(805)				(805)
Common stock dividend paid	(1,692)			(1,692)
Common stock issued under dividend reinvestment plan, shares		9,885
Common stock issued under dividend reinvestment plan	396	$ 0	396
Common stock issued, shares, other		823
Common stock issued, other	30	$ 0	30
Stock-based compensation, shares		(303)
Stock-based compensation	438	$ 0	438
Net settlement for employee taxes on restricted stock and options, shares		(1,611)
Net settlement for employee taxes on restricted stock and options	(76)	$ 0	(76)
Stock options exercised, net, shares		4,496
Stock options exercised, net	72	$ 0	72
Balance, ending at Jun. 30, 2018	237,577	$ 117	90,019	154,094	(6,653)
Balance, ending, shares, outstanding at Jun. 30, 2018		11,696,204
Balance, beginning at Dec. 31, 2018	$ 255,297	$ 117	91,281	165,183	(1,284)
Balance, beginning, shares, outstanding at Dec. 31, 2018	11,708,218	11,708,218
Increase (Decrease) in Stockholders' Equity
Net income	$ 8,696			8,696
Other comprehensive income (loss), net	3,134				3,134
Common stock dividend paid	(1,875)			(1,875)
Common stock issued under dividend reinvestment plan, shares		9,341
Common stock issued under dividend reinvestment plan	298	$ 0	298
Common stock issued, shares, other		264
Common stock issued, other	8	$ 0	8
Stock-based compensation, shares		62,523
Stock-based compensation	599	$ 1	598
Net settlement for employee taxes on restricted stock and options, shares		(2,741)
Net settlement for employee taxes on restricted stock and options	(240)	$ 0	(240)
Stock options exercised, net, shares		20,509
Stock options exercised, net	144	$ 0	144
Balance, ending at Mar. 31, 2019	266,061	$ 118	92,089	172,004	1,850
Balance, ending, shares, outstanding at Mar. 31, 2019		11,798,114
Balance, beginning at Dec. 31, 2018	$ 255,297	$ 117	91,281	165,183	(1,284)
Balance, beginning, shares, outstanding at Dec. 31, 2018	11,708,218	11,708,218
Increase (Decrease) in Stockholders' Equity
Net income	$ 16,459
Other comprehensive income (loss), net	11,146
Balance, ending at Jun. 30, 2019	$ 280,627	$ 118	92,767	177,880	9,862
Balance, ending, shares, outstanding at Jun. 30, 2019	11,806,008	11,806,008
Balance, beginning at Mar. 31, 2019	$ 266,061	$ 118	92,089	172,004	1,850
Balance, beginning, shares, outstanding at Mar. 31, 2019		11,798,114
Increase (Decrease) in Stockholders' Equity
Net income	7,763			7,763
Other comprehensive income (loss), net	8,012				8,012
Common stock dividend paid	(1,887)			(1,887)
Common stock issued under dividend reinvestment plan, shares		10,503
Common stock issued under dividend reinvestment plan	294	$ 0	294
Common stock issued, shares, other		946
Common stock issued, other	28	$ 0	28
Stock-based compensation, shares		(347)
Stock-based compensation	457	$ 0	457
Net settlement for employee taxes on restricted stock and options, shares		(3,828)
Net settlement for employee taxes on restricted stock and options	(113)	$ 0	(113)
Stock options exercised, net, shares		620
Stock options exercised, net	12	$ 0	12
Balance, ending at Jun. 30, 2019	$ 280,627	$ 118	$ 92,767	$ 177,880	$ 9,862
Balance, ending, shares, outstanding at Jun. 30, 2019	11,806,008	11,806,008

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Consolidated Statement of Changes in Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018
Statement of Stockholders' Equity [Abstract]
Common stock dividend paid, per share	$ 0.16	$ 0.16	$ 0.145	$ 0.145

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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Cash flows from operating activities:
Net income	$ 7,763	$ 8,696	$ 7,574	$ 6,825	$ 16,459	$ 14,399
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	955		300		555	1,900
Depreciation and amortization					2,981	3,434
Stock-based compensation expense	518		500		944	885
Income on bank-owned life insurance, net	(162)		(170)		(324)	(338)
Net gains on sales of investment securities	(147)		0		(146)	(1)
Mortgage loans originated for sale					(6,207)	(6,296)
Proceeds from mortgage loans sold					5,637	5,979
Net gains on sales of loans					(105)	(132)
Net fair value (gain) loss on equity securities	(77)				(263)	2
Changes in:
(Increase) decrease in other assets					(5,860)	473
(Decrease) increase in other liabilities					(309)	691
Net cash provided by operating activities					13,362	20,996
Cash flows from investing activities:
Proceeds from sales of investment securities					13,623	12,705
Net proceeds from sales of FHLB capital stock					3,781	2,597
Proceeds from maturities, calls and pay-downs of investment securities					22,714	18,331
Purchase of investment securities					(60,592)	(66,969)
Net increase in loans					(26,904)	(28,709)
Additions to premises and equipment, net					(4,252)	(3,325)
Net cash used in investing activities					(51,630)	(65,370)
Cash flows from financing activities:
Net increase in deposits					265,366	218,992
Net decrease in borrowed funds					(100,008)	(88,499)
Cash dividends paid					(3,762)	(3,378)
Proceeds from issuance of common stock, net of expenses					628	861
Net settlement for employee taxes on restricted stock and options					(353)	(362)
Proceeds from stock option exercises					156	287
Net cash provided by financing activities					162,027	127,901
Net increase in cash and cash equivalents					123,759	83,527
Cash and cash equivalents at beginning of period		$ 63,120		$ 54,806	63,120	54,806	$ 54,806
Cash and cash equivalents at end of period	$ 186,879		$ 138,333		$ 186,879	$ 138,333	$ 63,120

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Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2019

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

(a) Organization of the Company and Basis of Presentation

The accompanying unaudited consolidated interim financial statements and these notes should be read in conjunction with the December 31, 2018 audited consolidated financial statements and notes thereto contained in the 2018 Annual Report on Form 10-K of Enterprise Bancorp, Inc. as filed with the Securities and Exchange Commission (the "SEC") on March 13, 2019 (the "2018 Annual Report on Form 10-K").  The Company has not materially changed its significant accounting policies from those disclosed in its 2018 Annual Report on Form 10-K. See Item (f) "Recent Accounting Pronouncements" under the subheading "Accounting pronouncements adopted by the Company" below in this Note 1.

The accompanying unaudited consolidated interim financial statements of Enterprise Bancorp, Inc. (the "Company," "Enterprise," "we," or "our"), a Massachusetts corporation, include the accounts of the Company and its wholly owned subsidiary, Enterprise Bank and Trust Company, commonly referred to as Enterprise Bank (the "Bank").  The Bank is a Massachusetts trust company and state chartered commercial bank organized in 1989. Substantially all of the Company's operations are conducted through the Bank and its subsidiaries.

The Bank's subsidiaries include Enterprise Insurance Services, LLC and Enterprise Wealth Services, LLC, both organized under the laws of the State of Delaware, engage in insurance sales activities and offer non-deposit investment products and services, respectively.  In addition, the Bank has the following subsidiaries that are incorporated in the Commonwealth of Massachusetts and classified as security corporations in accordance with applicable Massachusetts General Laws: Enterprise Security Corporation; Enterprise Security Corporation II; and Enterprise Security Corporation III.  The security corporations, which hold various types of qualifying securities, are limited to conducting securities investment activities that the Bank itself would be allowed to conduct under applicable laws.

The Company's headquarters and the Bank's main office are located at 222 Merrimack Street in Lowell, Massachusetts. At June 30, 2019, the Company had 24 full service branch banking offices serving the Greater Merrimack Valley, Nashoba Valley and North Central regions of Massachusetts and Southern New Hampshire (Southern Hillsborough and Rockingham counties). The Company also expects to open branches in Lexington, Massachusetts and North Andover, Massachusetts, pending regulatory approvals, and anticipates that the offices will open in the fall of 2019 and the first half of 2020, respectively. Through the Bank and its subsidiaries, the Company offers a range of commercial, residential and consumer loan products, deposit products and cash management services, electronic and digital banking options, and insurance services.  The Company also provides a range of wealth management, wealth services and trust services delivered via two channels, Enterprise Wealth Management and Enterprise Wealth Services. The services offered through the Bank and its subsidiaries are managed as one strategic unit and represent the Company's only reportable operating segment.

The Federal Deposit Insurance Corporation (the "FDIC") and the Massachusetts Division of Banks (the "Division") have regulatory authority over the Bank.  The Bank is also subject to certain regulatory requirements of the Board of Governors of the Federal Reserve System (the "Federal Reserve Board") and, with respect to its New Hampshire branch operations, the New Hampshire Banking Department.  The business and operations of the Company are subject to the regulatory oversight of the Federal Reserve Board.  The Division also retains supervisory jurisdiction over the Company.

The accompanying unaudited consolidated interim financial statements and notes thereto have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information and the instructions for SEC Form 10-Q through the rules and interpretive releases of the SEC under federal securities law. In the opinion of management, the accompanying unaudited consolidated interim financial statements reflect all necessary adjustments consisting of normal recurring accruals for a fair presentation.  All significant intercompany balances and transactions have been eliminated in the accompanying unaudited consolidated interim financial statements. Certain previous years' amounts in the audited consolidated financial statements, and notes thereto, have been reclassified to conform to the current year's presentation. Interim results are not necessarily indicative of results to be expected for the entire year, or any future period.

The Company has evaluated subsequent events and transactions from June 30, 2019 through the date this Quarterly Report on Form 10-Q (this "Form 10-Q") was filed with the SEC for potential recognition or disclosure as required by GAAP and determined that there were no material subsequent events requiring recognition or disclosure.

(b) Uses of Estimates

In preparing the unaudited consolidated interim financial statements in conformity with GAAP, management is required to exercise judgment in determining many of the methodologies, assumptions and estimates to be utilized.  These assumptions and estimates affect the reported values of assets and liabilities as of the balance sheet dates and income and expenses for the period then ended.  As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates should the assumptions and estimates used be incorrect or change over time due to changes in circumstances.  Changes in those estimates resulting from continuing changes in the economic environment and other factors will be reflected in the consolidated financial statements and results of operations in future periods.

As discussed in the Company's 2018 Annual Report on Form 10-K, the three most significant areas in which management applies critical assumptions and estimates are: the estimates of the allowance for loan losses, impairment review of investment securities, and the impairment review of goodwill.  Refer to Note 1, "Summary of Significant Accounting Policies," to the Company's audited consolidated financial statements included in the Company's 2018 Annual Report on Form 10-K for accounting policies related to these significant estimates.

(c) Restricted Cash and Investments

Certain of the Company's derivative agreements contain provisions for collateral to be posted if the derivative exposure exceeds a threshold amount. When the Company has pledged cash as collateral for this purpose, the cash is carried as restricted cash within "Interest-earning Deposits." See Note 8, "Derivatives and Hedging Activities," to the Company's unaudited consolidated interim financial statements below for more information about the Company's collateral related to its derivatives.

The Bank is also required by the Federal Reserve Bank of Boston ("FRB") to maintain in reserves certain amounts of vault cash and/or deposits with the FRB. The average daily cash balance on hand for reserve requirements included in "Cash and Due from Banks" was approximately $8.8 million, based on the two-week computation period encompassing June 30, 2019.

As a member of the FHLB, the Company is required to purchase certain levels of FHLB capital stock at par value in association with outstanding advances from the FHLB.  From time-to-time, the FHLB may initiate the repurchase, at par value, of "excess" levels of its capital stock held by member banks. This stock is classified as a restricted investment and is carried at cost, which management believes approximates fair value.  FHLB stock represents the only restricted investment held by the Company.

Management regularly reviews its holdings of FHLB stock for other-than-temporary impairment ("OTTI"). Based on management's periodic review, the Company has not recorded any OTTI charges on this investment to date. If it was determined that a write-down of FHLB stock was required, impairment would be recognized through a charge to earnings.

See Note 2, "Investment Securities," to the Company's unaudited consolidated interim financial statements below for additional information on management's OTTI review.

(d) Revenue Recognition-Accounting Standard Codification ("ASC") Topic 606

While the majority of the Company's revenue is generated from contracts with customers, our primary sources of revenue, interest and dividend income (primarily loan interest income), are outside of the scope of ASC 606, "Revenue from Contracts with Customers-Topic 606," and are accounted for under other ASC topics. The core principles of this standard require an entity to recognize revenue to depict the transfer of goods and services to customers as performance obligations are satisfied.

The primary areas of income within the scope of ASC 606, wealth management fees and deposit and interchange fees, which are components of non-interest income on the Company's consolidated statements of income, are discussed below.

Wealth management fees consist of income generated through Enterprise Wealth Management and Enterprise Wealth Services. Enterprise Wealth Management income is primarily generated by managing customers' financial assets. Revenue is recognized as our performance obligation is completed each month. Enterprise Wealth Services revenue is generated through a third-party arrangement to refer, manage and service customers. For new sales and referrals along with transactional type charges, the performance obligation is based on a point in time and the payment is received and revenue is recognized in the same month as the revenue-generating activity. For managing and servicing customers, revenue is recognized when our performance obligation is completed each month.

Deposit and interchange fees are comprised of deposit account related charges and income generated from electronic payment interchanges. Deposit account charges consist of certain transactional analysis fees net of earning balance credits, monthly account service fees, and transactional fees such as overdraft fees. Analysis and monthly services fees are recognized over the period the service is performed. For transactional fees, the performance obligation and the revenue are recognized at a point of time and payment is typically received as the service is rendered. Interchange income is generated primarily from retail debit card transactions processed through the card payment network. The performance obligation and the revenue are recognized when the service is performed.

The following non-interest income components are not subject to ASC 606: income on bank-owned life insurance ("BOLI"), net gains/losses on sales of investment securities, and net gains on sales of loans, and are covered under other ASC topics. The remaining revenue items in non-interest income are not material.

See also Note 1, "Summary of Significant Accounting Policies," to the Company's audited consolidated financial statements in the Company's 2018 Annual Report on Form 10-K for additional accounting policies on revenue recognition related to income generated on investments, gains and losses on debt security sales, net gains on loans held for sale, and loans.

(e) Income Taxes

The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction and in the states of Massachusetts and New Hampshire within the directives of the respective enacted tax legislation. The Company uses the asset and liability method of accounting for income taxes.  Under this method, deferred tax assets and liabilities are recognized for the future tax expense or benefit attributable to differences between the financial statement carrying amounts and the tax basis of assets and liabilities.  The deferred tax assets and liabilities are reflected at currently-enacted 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 will be adjusted accordingly through the provision for income taxes in the period that includes the enactment date.

The Company's policy is to classify interest resulting from underpayment of income taxes as income tax expense in the first period the interest would begin accruing according to the provisions of the relevant tax law.  The Company classifies penalties resulting from underpayment of income taxes as income tax expense in the period for which the Company claims or expects to claim an uncertain tax position or in the period in which the Company's judgment changes regarding an uncertain tax position.

The income tax provisions will differ from the expense that would result from applying the federal statutory rate to income before taxes, due primarily to the impact of state tax expense, tax-exempt interest from certain investment securities, loans and BOLI and tax benefits from equity compensation deductions.

The Company did not have any unrecognized tax benefits accrued as income tax liabilities or receivables or as deferred tax items at June 30, 2019.  The Company is subject to U.S. federal and state income tax examinations by taxing authorities for the 2015 through 2018 tax years.

(f) Recent Accounting Pronouncements

The tables below summarize recent accounting pronouncements issued by the Financial Accounting Standards Board("FASB") that were either recently adopted by the Company or have not yet been adopted. For pronouncements not yet adopted, the effective date listed below is in line with the required adoption date for public business entities, such as the Company, though certain accounting pronouncements may permit early adoption. For more detailed information regarding these pronouncements, refer to the FASB's Accounting Standards Updates("ASU").

Accounting pronouncements adopted by the company
Standard/Effective Date	Description	Effect on Financial Statements or Other Significant Matters
ASU 2016-02, Leases (ASC Topic 842) January 1, 2019	This ASU supersedes previous leasing guidance in Topic 840, and lessees are now required to recognize lease (right-of-use or "ROU") assets and lease liabilities on the balance sheet for all leases with terms longer than 12 months.	See Note 5, "Leases," to the Company's unaudited consolidated interim financial statements, contained below, for further information on the impact of the standard's adoption on the Company.
ASU 2017-02, Derivatives and Hedging (ASC Topic 815): Targeted Improvements to Accounting for Hedging Activities January 1, 2019	The objective of the ASU is to better align hedge accounting with an organization's risk management activities in the financial statements. In addition, the ASU simplifies the application of hedge accounting guidance in areas where practice issues exist. The amendments expand the strategies that qualify for hedge accounting, change how many hedging relationships are presented in the financial statements and simplify the application of hedge accounting in certain situations, reducing the operational complexities associated with certain existing strategies. New or modified disclosures are required, primarily for fair value and cash flow hedges.	The Company currently does not hold any instruments that meet hedge accounting requirements and therefore the adoption of this ASU in January 2019 did not have an impact on the Company's unaudited consolidated interim financial statements, results of operations or disclosures for the periods covered by the Form 10-Q, however, the Company may utilize hedging strategies in the future.
ASU No. 2018-07, Compensation-Stock-Based Compensation (ASU Topic 718): Improvements to Non-employee Shared-Based Payment Accounting January 1, 2019	The amendments in the ASU expand the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from non-employees except for share-based payments used to effectively provide (1) financing to the issuer or (2) awards granted in conjunction with selling goods or services to customers as part of a contract. Additionally, Topic 718 has been updated for specific guidance on inputs to an option pricing model and the attribution of cost (that is, the period of time over which share-based payment awards vest and the pattern of cost recognition over that period).	The adoption of this standard in January 2019 did not have a material impact on the Company's unaudited consolidated interim financial statements, results of operations or disclosures for the periods covered by the Form 10-Q. See Note 9, "Stockholders' Equity."

Accounting pronouncements not yet adopted by the Company
Standard/Effective Date	Description	Effect on Financial Statements or Other Significant Matters
ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments January 1, 2020	The amendments in this ASU require a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. Previously, when credit losses were measured under GAAP, an entity generally only considered past events and current conditions in measuring the incurred loss and generally recognition of the full amount of credit losses was delayed until the loss was probable of occurring. The amendments in this ASU eliminate the probable initial recognition threshold in current GAAP and, instead, reflect an entity's current estimate of all expected credit losses (commonly known as "CECL"). The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the report amount. An entity must use judgment in determining the relevant information and estimation methods that are appropriate in its circumstances. The income statement reflects the measurement of credit losses for newly recognized financial assets, as well as the expected increases or decreases of expected credit losses that have taken place during the period. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. Credit losses on available-for-sale debt securities should be measured in a manner similar to current GAAP. However, the amendments in this ASU require that credit losses be presented as an allowance rather than as a write-down. Unlike current GAAP, the ASU provides for reversals of credit losses in future period net income in situations where the estimate of loss declines. An entity will apply the amendments in this ASU through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective (that is, a modified-retrospective approach).	In December 2018, banking regulators issued a final rule, effective April 1,2019, that addresses the regulatory capital treatment of credit loss allowances under the CECL methodology and allows banking organizations an option to phase in the day-one regulatory capital effects of CECL adoption over three years. The Company has established a project committee and an implementation plan for this ASU. The impact of the adoption of ASU No. 2016-13 on the Company's operations, financial results, disclosures, and controls is under evaluation.
ASU No. 2017-04, Intangibles-Goodwill and Other (ASU Topic 350)- Simplifying the Test for Goodwill Impairment January 1, 2020	The main provision in this ASU eliminated Step 2 of the goodwill impairment test and instead requires an entity to perform its annual, or interim, goodwill impairment test by comparing the fair value of the reporting unit with its carrying amount. An impairment charge would be recognized for the amount the carrying value exceeds the reporting unit's fair value as long as the amount recognized does not exceed the amount of goodwill allocated to the reporting unit.	Goodwill carried on the Company's consolidated financial statements was $5.7 million at both June 30, 2019 and December 31, 2018. This asset is related to the Company’s acquisition of two branch offices in July 2000. The Company does not expect the adoption of ASU No. 2017-04 to have a material impact on the Company's consolidated financial statements and results of operations.

Accounting pronouncements not yet adopted by the Company (continued)
Standard/Effective Date	Description	Effect on Financial Statements or Other Significant Matters
ASU No. 2018-13, Fair Value Measurement (ASU Topic 820)-Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement January 1, 2020	The amendments in this ASU modify the disclosure requirements primarily related to level 3 fair value measurements of the fair value hierarchy.	The Company does not expect the adoption of ASU No. 2018-13 to have a material impact on the Company's consolidated financial statements and results of operations because this ASU primarily relates to disclosure requirements.
ASU No.2018-15, Intangible-Goodwill and Other- Internal-Use Software (ASU Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract January 1, 2020	The major provision in the amendments in this ASU require an entity to capitalize certain implementation costs incurred in a hosting arrangement that is a service contract in accordance with current GAAP for internal-use software and expense these costs over the term of the hosting arrangement. Additionally, these capitalized implementation costs are required to be reviewed for impairment in accordance with current GAAP for internal-use software. The amendments in this ASU should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption.	The Company does not expect the adoption of ASU No. 2018-15 to have a material impact on the Company's consolidated financial statements and results of operations.
ASU No. 2018-14, Compensation-Retirement Benefits-Defined Benefit Plans-General (ASU Subtopic 715-20) - Disclosure Framework- Changes to the Disclosure Requirements for Defined Benefit Plans January 1, 2021	The amendments in this ASU modify the disclosure requirements on defined benefit plans including requiring disclosures about significant gains and losses related to changes in the benefit obligation.	The adoption of ASU No. 2018-14 will not have a material impact on the Company's consolidated financial statements and results of operations because this ASU primarily relates to disclosure requirements and the balances of the benefit plans impacted by this ASU are immaterial to the Company.

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Investment Securities

6 Months Ended

Jun. 30, 2019

Investments, Debt and Equity Securities [Abstract]

Investment Securities

Investment Securities

As of June 30, 2019, and December 31, 2018, the investment portfolio was primarily comprised of debt securities, with a small portion of the portfolio invested in equity securities.

See also item (c), "Restricted Cash and Investments," contained in Note 1, "Summary of Significant Accounting Policies," to the Company's unaudited consolidated interim financial statements, contained above, for further information regarding the Company's FHLB stock. See Note 13, "Fair Value Measurements," to the Company's unaudited consolidated interim financial statements, contained below, for further information regarding the Company's fair value measurements for investment securities.

Debt Securities

The amortized cost and fair values of debt securities at the dates specified are summarized as follows:

	June 30, 2019
(Dollars in thousands)	Amortized cost		Unrealized gains		Unrealized losses		Fair Value
Federal agency obligations(1)	$	998	$	7	$	—	$	1,005
Residential federal agency MBS(1)	170,882		2,165		309		172,738
Commercial federal agency MBS(1)	113,136		3,875		—		117,011
Municipal securities	153,322		6,535		—		159,857
Corporate bonds	13,994		394		5		14,383
Certificate of deposits(2) ("CDs")	950		—		—		950
Total debt securities, at fair value	$	453,282	$	12,976	$	314	$	465,944

	December 31, 2018
(Dollars in thousands)	Amortized cost		Unrealized gains		Unrealized losses		Fair Value
Federal agency obligations(1)	$	7,994	$	—	$	19	$	7,975
Residential federal agency MBS(1)	174,701		633		2,608		172,726
Commercial federal agency MBS(1)	93,800		609		430		93,979
Municipal securities	141,747		1,122		826		142,043
Corporate bonds	13,967		24		185		13,806
Certificates of deposits(2)	950		—		6		944
Total debt securities, at fair value	$	433,159	$	2,388	$	4,074	$	431,473

__________________________________________

(1) These categories may include investments issued or guaranteed by government sponsored enterprises such as Fannie Mae ("FNMA"), Freddie Mac ("FHLMC"), Federal Farm Credit Bank ("FFCB"), or one of several Federal Home Loan Banks, as well as, investments guaranteed by Ginnie Mae ("GNMA"), a wholly-owned government entity. 

(2) CDs represent term deposits issued by banks that are subject to FDIC insurance and purchased on the open market.

Included in the residential and commercial federal agency mortgage-backed securities ("MBS") categories were collateralized mortgage obligations ("CMOs") issued by U.S. agencies with fair values totaling $266.1 million and $242.8 million at June 30, 2019 and December 31, 2018, respectively. Included in municipal securities were tax exempt municipal securities with fair values totaling $100.1 million and $107.3 million at June 30, 2019 and December 31, 2018, respectively.

As of the dates reflected in the tables above, all of the Company's debt securities were classified as available-for-sale and carried at fair value.

Net unrealized appreciation and depreciation on debt securities available-for-sale, net of applicable income taxes, are reflected as a component of accumulated other comprehensive income (loss). The net unrealized gain or loss in the Company's debt security portfolio fluctuates as market interest rates rise and fall.  Due to the fixed rate nature of this portfolio, as market rates fall, the value of the portfolio rises, and as market rates rise, the value of the portfolio declines.  The unrealized gains or losses on debt securities will also decline as the securities approach maturity. Unrealized losses on debt securities that are deemed OTTI are generally charged to earnings, as described further in Note 1, "Summary of Significant Accounting Policies," under Item (e), "Investments," to the Company's audited consolidated financial statements contained in the Company's 2018 Annual Report on Form 10-K. Gains or losses will be recognized in the income statement if the securities are sold.

The following tables summarize debt securities with unrealized losses, due to the fair values having declined below the amortized costs of the individual investments, by the duration of their continuous unrealized loss positions at June 30, 2019 and December 31, 2018: 

	June 30, 2019
	Less than 12 months				12 months or longer				Total
(Dollars in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		# of holdings
Residential federal agency MBS	$	7,418	$	38	$	35,726	$	271	$	43,144	$	309	11
Corporate bonds	—		—		1,330		5		1,330		5		9
Total temporarily impaired debt securities	$	7,418	$	38	$	37,056	$	276	$	44,474	$	314	20

	December 31, 2018
	Less than 12 months				12 months or longer				Total
(Dollars in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		# of holdings
Federal agency obligations	$	997	$	1	$	6,978	$	18	$	7,975	$	19	3
Residential federal agency MBS	26,147		597		81,158		2,011		107,305		2,608		25
Commercial federal agency MBS	3,258		11		18,717		419		21,975		430		9
Municipal securities	15,036		108		41,265		718		56,301		826		83
Corporate bonds	5,277		36		5,653		149		10,930		185		63
CDs	—		—		944		6		944		6		4
Total temporarily impaired debt securities	$	50,715	$	753	$	154,715	$	3,321	$	205,430	$	4,074	187

During the six months endedJune 30, 2019 and 2018, the Company did not record any fair value impairment charges OTTI on its investments in debt securities. At June 30, 2019, management did not consider any debt securities to have OTTI. Management regularly reviews the portfolio for debt securities with unrealized losses that are other-than-temporarily impaired. There have been no material changes to the Company's process for assessing investments for OTTI as reported in the Company's 2018 Annual Report on Form 10-K. For more information about the Company's assessment for OTTI, see Note 2, "Investment Securities," to the Company's audited consolidated financial statements contained in the Company's 2018 Annual Report on Form 10-K.

The contractual maturity distribution at June 30, 2019 of total debt securities was as follows:

(Dollars in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	4,248	$	4,259
Due after one, but within five years	67,469		69,232
Due after five, but within ten years	175,094		182,596
Due after ten years	206,471		209,857
Total debt securities	$	453,282	$	465,944

Scheduled contractual maturities shown above may not reflect the actual maturities of the investments. The actual MBS/CMO cash flows likely will be faster than presented above due to prepayments and amortization. Similarly, included in the table above are callable securities, comprised of municipal securities and corporate bonds, with a fair value of $86.1 million, which can be redeemed by the issuers prior to the maturity presented above.  Management considers these factors when evaluating the interest-rate risk in the Company's asset-liability management program.

From time to time, the Company may pledge debt securities as collateral for deposit account balances of municipal customers, and for borrowing capacity with the FHLB and the FRB.  The fair value of debt securities pledged as collateral for these purposes was $461.4 million at June 30, 2019.

Sales of debt securities for the three and six months endedJune 30, 2019 and June 30, 2018 are summarized as follows:

	Three months ended June 30,				Six months ended June 30,
(Dollars in thousands)	2019		2018		2019			2018
Amortized cost of debt securities sold (1)	$	9,828	$	—	$	11,621		$	668
Gross realized gains on sales	147		—		149			3
Gross realized losses on sales	—		—		(3		)	(2		)
Total proceeds from sales of debt securities	$	9,975	$	—	$	11,767		$	669

_________________________________________

(1) Amortized cost of investments sold is determined on a specific identification basis and includes pending trades based on trade date, if applicable.

Equity Securities

The Company held equity securities with a fair value of $2.4 million as of June 30, 2019, compared to fair value of $1.4 million at December 31, 2018. These investments are accounted for under ASC Topic 321, "Investments-Equity Securities," and are recorded on the Company's consolidated balance sheet at fair value with changes in fair value recognized in net income. At June 30, 2019, the equity portfolio consisted primarily of investments in a diversified group of mutual funds, with a portion of the portfolio invested in individual common stock of entities in the financial services industry. There were no sales of equity securities in either the three or six months ended months ended June 30, 2019 or June 30, 2018.

During the three and six months endedJune 30, 2019, the net fair value gain on equity securities recorded in the Other Income line of the Company's consolidated statement of income was $77 thousand and $263 thousand, respectively, while during the three and six months endedJune 30, 2018, the related fair value gain/(loss) on equity securities was immaterial. The net fair value changes of equity securities that will be recognized in net income in the future will depend on the amount of dollars invested in equities and the magnitude of changes in equity fair values.

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Loans

6 Months Ended

Jun. 30, 2019

Receivables [Abstract]

Loans

Loans

The Company specializes in lending to business entities, non-profit organizations, professional practices and individuals. The Company's primary lending focus is on the development of high-quality commercial relationships achieved through active business development efforts, long-term relationships with established commercial developers, strong community involvement and focused marketing strategies.  Loans made to business entities, non-profit organizations, and professional practices may include commercial mortgage loans, construction and land development loans, secured and unsecured commercial loans and lines of credit, and letters of credit.  The Company also originates equipment lease financing for business entities. Loans made to individuals include conventional residential mortgage loans, home equity loans and lines, residential construction loans on owner-occupied primary and secondary residences, and secured and unsecured personal loans and lines of credit. The Company manages its loan portfolio to avoid concentration by industry, relationship size and source of repayment to lessen its credit risk exposure. For additional information on the Company's lending products, see the heading "Lending Products" under Item 1, "Business," contained in the Company's 2018 Annual Report on Form 10-K.

See also Note 4, "Allowance for Loan Losses," to the Company's unaudited consolidated interim financial statements, contained below, for information on the Company's credit risk management, non-accrual, impaired and troubled debt restructured loans and the allowance for loan losses. See Note 8, "Derivatives and Hedging Activities," to the Company's unaudited consolidated interim financial statements, contained below, for information regarding interest-rate swap agreements related to certain commercial loans, and see Note 13, "Fair Value Measurements," to the Company's unaudited consolidated interim financial statements, contained below, for further information regarding the Company's fair value measurements for loans.

Loan Portfolio Classifications

Major classifications of loans at the dates indicated were as follows:

(Dollars in thousands)	June 30, 2019			December 31, 2018
Commercial real estate	$	1,294,509		$	1,303,879
Commercial and industrial	514,402			514,253
Commercial construction	264,484			234,430
Total commercial loans	2,073,395			2,052,562
Residential mortgages	235,392			231,501
Home equity loans and lines	97,994			96,116
Consumer	10,208			10,241
Total retail loans	343,594			337,858
Gross loans	2,416,989			2,390,420
Deferred loan origination fees, net	(2,887		)	(2,914		)
Total loans	2,414,102			2,387,506
Allowance for loan losses	(34,351		)	(33,849		)
Net loans	$	2,379,751		$	2,353,657

Commercial loans originated by other banks in which the Company is a participating institution are carried at the pro-rata share of ownership and amounted to $69.0 million at June 30, 2019 and $63.5 million at December 31, 2018.

Loans serviced for others

At June 30, 2019 and December 31, 2018, the Company was servicing residential mortgage loans owned by investors amounting to $16.7 million and $17.2 million, respectively.  Additionally, the Company was servicing commercial loans originated by the Company and participated out to various other institutions amounting to $70.0 million and $72.1 million at June 30, 2019 and December 31, 2018, respectively.

Loans serving as collateral

Loans designated as qualified collateral and pledged to the FHLB for borrowing capacity for the dates indicated are summarized below:

(Dollars in thousands)	June 30, 2019		December 31, 2018
Commercial real estate	$	291,748	$	311,024
Residential mortgages	222,234		220,815
Home equity lines of credit	7,940		8,382
Total loans pledged to FHLB	$	521,922	$	540,221

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Allowance For Loan Loss

6 Months Ended

Jun. 30, 2019

Receivables [Abstract]

Allowance for Loan Loss

Allowance for Loan Losses

Allowance for probable loan losses methodology

On a quarterly basis, management prepares an estimate of the allowance necessary to cover estimated probable credit losses.  The Company uses a systematic methodology to measure the amount of estimated loan loss exposure inherent in the portfolio for purposes of establishing a sufficient allowance for loan losses.  The methodology makes use of specific reserves for loans individually evaluated and deemed impaired, and general reserves for larger pools of homogeneous loans, which are collectively evaluated relying on a combination of qualitative and quantitative factors that may affect credit quality of the pool.

There have been no material changes to the Company's underwriting practices, credit risk management system, or to the allowance assessment methodology used to estimate loan loss exposure as reported in Note 4, "Allowance for Loan Losses," to the Company's audited consolidated financial statements contained in the Company's 2018 Annual Report on Form 10-K,

The balances of loans as of June 30, 2019 by portfolio classification and evaluation method are summarized as follows: 

(Dollars in thousands)	Loans individually evaluated for impairment		Loans collectively evaluated for impairment		Gross Loans
Commercial real estate	$	16,906	$	1,277,603	$	1,294,509
Commercial and industrial	11,042		503,360		514,402
Commercial construction	1,723		262,761		264,484
Residential mortgages	934		234,458		235,392
Home equity loans and lines	432		97,562		97,994
Consumer	32		10,176		10,208
Total gross loans	$	31,069	$	2,385,920	$	2,416,989

The balances of loans as of December 31, 2018 by portfolio classification and evaluation method are summarized as follows:

(Dollars in thousands)	Loans individually evaluated for impairment		Loans collectively evaluated for impairment		Gross Loans
Commercial real estate	$	16,318	$	1,287,561	$	1,303,879
Commercial and industrial	12,053		502,200		514,253
Commercial construction	1,736		232,694		234,430
Residential mortgages	893		230,608		231,501
Home equity loans and lines	514		95,602		96,116
Consumer	16		10,225		10,241
Total gross loans	$	31,530	$	2,358,890	$	2,390,420

See "Financial Condition" in Item 2, "Management's Discussion and Analysis," under the headings "Credit Risk" and "Allowance for Loan Losses" in this Form 10-Q for additional information about changes in the Company's credit quality indicators since December 31, 2018.

Credit quality indicators

Early detection of credit issues is critical to minimize credit losses. Accordingly, management regularly monitors internal credit quality indicators such as, among others, the risk classification of adversely classified loans, past due and non-accrual loans, impaired and restructured loans, and the level of foreclosure activity. These credit quality indicators are discussed below.

Adversely classified loans

The Company's loan risk rating system classifies loans depending on risk of loss characteristics. The classifications range from "substantially risk free" for the highest quality loans and loans that are secured by cash collateral, through a satisfactory range of "minimal," "moderate," "better than average," and "average" risk, to the regulatory problem-asset classifications of "criticized," for loans that may need additional monitoring, and the more severe adverse classifications of "substandard," "doubtful," and "loss" based on criteria established under banking regulations. Loans which are evaluated to be of weaker credit quality are placed on the "watch credit list" and reviewed on a more frequent basis by management.

Adversely classified loans may be accruing or in non-accrual status and may be additionally designated as impaired or restructured, or some combination thereof. 

The following tables present the Company's credit risk profile for each portfolio classification by internally assigned adverse risk rating category as of the periods indicated:

	June 30, 2019
	Adversely Classified						Not Adversely
(Dollars in thousands)	Substandard		Doubtful		Loss		Classified		Gross Loans
Commercial real estate	$	17,152	$	—	$	—	$	1,277,357	$	1,294,509
Commercial and industrial	12,577		—		44		501,781		514,402
Commercial construction	2,240		—		—		262,244		264,484
Residential mortgages	1,849		—		—		233,543		235,392
Home equity loans and lines	478		—		—		97,516		97,994
Consumer	40		12		—		10,156		10,208
Total gross loans	$	34,336	$	12	$	44	$	2,382,597	$	2,416,989

	December 31, 2018
	Adversely Classified						Not Adversely
(Dollars in thousands)	Substandard		Doubtful		Loss		Classified		Gross Loans
Commercial real estate	$	17,714	$	240	$	—	$	1,285,925	$	1,303,879
Commercial and industrial	12,821		—		—		501,432		514,253
Commercial construction	2,262		—		—		232,168		234,430
Residential mortgages	1,820		—		—		229,681		231,501
Home equity loans and lines	561		—		—		95,555		96,116
Consumer	35		8		—		10,198		10,241
Total gross loans	$	35,213	$	248	$	—	$	2,354,959	$	2,390,420

Total adversely classified loans amounted to 1.42% of total loans at June 30, 2019, as compared to 1.49% at December 31, 2018.

Past due and non-accrual loans

 The following tables present an age analysis of past due loans by portfolio classification as of the dates indicated:

	Balance at June 30, 2019
(Dollars in thousands)	30-59 Days Past Due		60-89 Days Past Due		Past Due 90 days or more		Total Past Due Loans		Current Loans		Gross Loans		Non-accrual Loans
Commercial real estate	$	4,030	$	393	$	3,449	$	7,872	$	1,286,637	$	1,294,509	$	6,602
Commercial and industrial	797		604		1,073		2,474		511,928		514,402		4,049
Commercial construction	4,731		460		—		5,191		259,293		264,484		123
Residential mortgages	1,617		312		—		1,929		233,463		235,392		745
Home equity loans and lines	77		177		—		254		97,740		97,994		432
Consumer	35		10		17		62		10,146		10,208		27
Total gross loans	$	11,287	$	1,956	$	4,539	$	17,782	$	2,399,207	$	2,416,989	$	11,978

	Balance at December 31, 2018
(Dollars in thousands)	30-59 Days Past Due		60-89 Days Past Due		Past Due 90 days or more		Total Past Due Loans		Current Loans		Gross Loans		Non-accrual Loans
Commercial real estate	$	7,596	$	21	$	3,821	$	11,438	$	1,292,441	$	1,303,879	$	6,894
Commercial and industrial	619		17		2,299		2,935		511,318		514,253		3,417
Commercial construction	4,319		—		—		4,319		230,111		234,430		176
Residential mortgages	114		—		377		491		231,010		231,501		763
Home equity loans and lines	14		168		209		391		95,725		96,116		514
Consumer	23		31		6		60		10,181		10,241		20
Total gross loans	$	12,685	$	237	$	6,712	$	19,634	$	2,370,786	$	2,390,420	$	11,784

At June 30, 2019 and December 31, 2018, all loans past due 90 days or more were carried as non-accrual, in addition to those loans that were less than 90 days past due where reasonable doubt existed as to the full and timely collection of interest or principal that have also been designated as non-accrual, despite their payment due status shown in the tables above.

Non-accrual loans that were not adversely classified amounted to $33 thousand at June 30, 2019 and $81 thousand at December 31, 2018. These balances primarily represented the guaranteed portions of non-performing SBA loans. The majority of the non-accrual loan balances were also carried as impaired loans during the periods noted and are discussed further below.

The ratio of non-accrual loans to total loans amounted to 0.50% at June 30, 2019 and 0.49% at December 31, 2018.

At June 30, 2019, additional funding commitments for non-accrual loans were not material.

Impaired loans

Impaired loans are individually significant loans for which management considers it probable that not all amounts due (principal and interest) will be collected in accordance with the original contractual terms. Impaired loans include loans that have been modified in a troubled debt restructuring ("TDR"), see "Troubled debt restructurings" below. Impaired loans are individually evaluated and exclude large groups of smaller-balance homogeneous loans, such as residential mortgage loans and consumer loans, which are collectively evaluated for impairment, and loans that are measured at fair value, unless the loan is amended in a TDR. 

The carrying value of impaired loans amounted to $31.1 million and $31.5 million at June 30, 2019 and December 31, 2018, respectively.  Total accruing impaired loans amounted to $19.1 million and $19.7 million at June 30, 2019 and December 31, 2018, respectively, while non-accrual impaired loans amounted to approximately $12.0 million and $11.8 million as of June 30, 2019 and December 31, 2018, respectively.

The following tables set forth the recorded investment in impaired loans and the related specific allowance allocated by portfolio classification as of the dates indicated:

	Balance at June 30, 2019
(Dollars in thousands)	Unpaid contractual principal balance		Total recorded investment in impaired loans		Recorded investment with no allowance		Recorded investment with allowance		Related specific allowance
Commercial real estate	$	17,800	$	16,906	$	16,739	$	167	$	5
Commercial and industrial	11,575		11,042		7,403		3,639		2,307
Commercial construction	1,800		1,723		1,723		—		—
Residential mortgages	1,024		934		518		416		5
Home equity loans and lines	614		432		432		—		—
Consumer	32		32		—		32		32
Total	$	32,845	$	31,069	$	26,815	$	4,254	$	2,349

	Balance at December 31, 2018
(Dollars in thousands)	Unpaid contractual principal  balance		Total recorded investment in impaired loans		Recorded investment with no allowance		Recorded investment with allowance		Related specific allowance
Commercial real estate	$	17,140	$	16,318	$	15,948	$	370	$	55
Commercial and industrial	12,538		12,053		7,752		4,301		2,140
Commercial construction	1,804		1,736		1,736		—		—
Residential mortgages	970		893		473		420		13
Home equity loans and lines	685		514		514		—		—
Consumer	16		16		—		16		16
Total	$	33,153	$	31,530	$	26,423	$	5,107	$	2,224

The following table presents the average recorded investment in impaired loans by portfolio classification and the related interest recognized during the three months indicated:

	Three months ended June 30, 2019					Three months ended June 30, 2018
(Dollars in thousands)	Average recorded investment		Interest income recognized			Average recorded investment		Interest income recognized
Commercial real estate	$	16,425	$	122		$	13,506	$	95
Commercial and industrial	11,474		94			11,601		89
Commercial construction	1,738		27			1,676		23
Residential mortgages	939		17			644		1
Home equity loans and lines	436		—			499		—
Consumer	24		(1		)	66		—
Total	$	31,036	$	259		$	27,992	$	208

The following table presents the average recorded investment in impaired loans by portfolio classification and the related interest recognized during the six months indicated:

	Six months ended June 30, 2019					Six months ended June 30, 2018
(Dollars in thousands)	Average recorded investment		Interest income recognized			Average recorded investment		Interest income recognized
Commercial real estate	$	16,114	$	242		$	13,611	$	189
Commercial and industrial	11,696		209			11,124		166
Commercial construction	1,736		52			1,656		45
Residential mortgages	914		18			629		—
Home equity loans and lines	472		—			487		—
Consumer	21		(1		)	49		—
Total	$	30,953	$	520		$	27,556	$	400

At June 30, 2019, additional funding commitments for impaired loans were not material. The Company's obligation to fulfill the additional funding commitments on impaired loans is generally contingent on the borrower's compliance with the terms of the credit agreement. If the borrower is not in compliance, additional funding commitments may or may not be made at the Company's discretion.

Troubled debt restructurings

Loans are designated as a TDR when, as part of an agreement to modify the original contractual terms of the loan as a result of financial difficulties of the borrower, the Bank grants the borrower a concession on the terms that would not otherwise be considered.  Typically, such concessions may consist of one or a combination of the following: a reduction in interest rate to a below market rate, taking into account the credit quality of the note; extension of additional credit based on receipt of adequate collateral; or a deferment or reduction of payments (principal or interest) which materially alters the Bank's position or significantly extends the note's maturity date, such that the present value of cash flows to be received is materially less than those contractually established at the loan's origination. All loans that are modified are reviewed by the Company to identify if a TDR has occurred. TDR loans are included in the impaired loan category and, as such, these loans are individually reviewed and evaluated, and a specific reserve is assigned for the amount of the estimated probable credit loss. 

Total TDR loans, included in the impaired loan balances above, as of June 30, 2019 and December 31, 2018, were $24.6 million and $23.1 million, respectively. TDR loans on accrual status amounted to $19.1 million and $19.4 million at June 30, 2019 and December 31, 2018, respectively. TDR loans included in non-performing loans amounted to $5.5 million at June 30, 2019 and $3.7 million at December 31, 2018. The Company continues to work with customers and enters into loan modifications (which may or may not be TDRs) to the extent deemed to be necessary or appropriate while attempting to achieve the best mutual outcome given the individual financial circumstances and future prospects of the borrower.

At June 30, 2019, additional funding commitments for TDR loans were not material.

The following table sets forth the post modification balances of TDRs listed by type of modification for TDRs that occurred during the periods indicated:

	Six months ended
	June 30, 2019			June 30, 2018
(Dollars in thousands)	Number of restructurings	Amount		Number of restructurings	Amount
Temporary payment reduction and payment re-amortization of remaining principal over extended term	7	$	89	5	$	222
Temporary interest only payment plan	2	395		2	148
Other payment concessions	3	1,759		1	12
Total	12	$	2,243	8	$	382
Amount of specific reserves included in the allowance for loan losses associated with TDRs listed above		$	89		$	73

Loans modified as TDRs during the three months ended June 30, 2019 and June 30, 2018 are detailed below:

	Three months ended
	June 30, 2019					June 30, 2018
(Dollars in thousands)	Number of restructurings	Pre-modification outstanding recorded investment		Post-modification outstanding recorded investment		Number of restructurings	Pre-modification outstanding recorded investment		Post-modification outstanding recorded investment
Commercial real estate	2	$	1,626	$	1,626	—	$	—	$	—
Commercial and industrial	2	212		216		2	20		17
Commercial construction	—	—		—		—	—		—
Residential mortgages	—	—		—		—	—		—
Home equity loans and lines	—	—		—		2	112		104
Consumer	1	6		6		—	—		—
Total	5	$	1,844	$	1,848	4	$	132	$	121

There were no payment defaults during the three months ended June 30, 2019. Payment defaults, during the three months ended June 30, 2018 on loans modified as TDRs within the preceding twelve months are detailed below:

	Three months ended
	June 30, 2018
(Dollars in thousands)	Number of TDRs that defaulted	Post- modification outstanding recorded investment
Commercial real estate	—	$	—
Commercial and industrial	1	73
Commercial construction	—	—
Residential mortgages	—	—
Home equity loans and lines	1	12
Consumer	—	—
Total	2	$	85

Loans modified as TDRs during the six months ended June 30, 2019 and June 30, 2018 by portfolio classification are detailed below:

	Six months ended
	June 30, 2019					June 30, 2018
(Dollars in thousands)	Number of restructurings	Pre-modification outstanding recorded investment		Post-modification outstanding recorded investment		Number of restructurings	Pre-modification outstanding recorded investment		Post-modification outstanding recorded investment
Commercial real estate	3	$	2,047	$	1,626	2	$	131	$	148
Commercial and industrial	7	406		299		4	162		130
Commercial construction	—	—		—		—	—		—
Residential mortgages	1	315		312		—	—		—
Home equity loans and lines	—	—		—		2	112		104
Consumer	1	6		6		—	—		—
Total	12	$	2,774	$	2,243	8	$	405	$	382

There were no subsequent charge-offs associated with the new TDRs noted in the table above during the six months endedJune 30, 2019. Subsequent charge-offs associated with the new TDRs noted in the table above during the six months endedJune 30, 2018 were immaterial.

Payment defaults by portfolio classification during the six months ended June 30, 2019 and June 30, 2018, on loans modified as TDRs within the preceding twelve months are detailed below:

	Six months ended
	June 30, 2019			June 30, 2018
(Dollars in thousands)	Number of TDRs that defaulted	Post- modification outstanding recorded investment		Number of TDRs that defaulted	Post- modification outstanding recorded investment
Commercial real estate	—	$	—	—	$	—
Commercial and industrial	2	172		1	73
Commercial construction	—	—		—	—
Residential mortgages	—	—		—	—
Home equity loans and lines	—	—		1	12
Consumer	—	—		—	—
Total	2	$	172	2	$	85

Other real estate owned ("OREO")

Real estate acquired by the Company through foreclosure proceedings or the acceptance of a deed in lieu of foreclosure is classified as OREO. When property is acquired, it is recorded at estimated fair value of the property acquired, less estimated costs to sell, establishing a new cost basis and carried on the consolidated balance sheet in the line item "Prepaid expenses and other assets." The estimated fair value is based on market appraisals and the Company’s internal analysis. Any loan balance in excess of the estimated realizable fair value on the date of transfer is charged to the allowance for loan losses on that date. All costs incurred thereafter in maintaining the property, as well as subsequent declines in fair value are charged to non-interest expense.

The carrying value of OREO at June 30, 2019 was $255 thousand and consisted of one property added during the six months endedJune 30, 2019, compared to no OREO at December 31, 2018 or June 30, 2018. There were no OREO sales or write downs during the six months endedJune 30, 2019 or June 30, 2018.

At both June 30, 2019 and December 31, 2018, the Company had no consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process according to local requirements of the applicable jurisdictions.

Allowance for loan loss activity

The allowance for loan losses is an estimate of probable credit losses inherent in the loan portfolio as of the specified balance sheet dates. On a quarterly basis, management prepares an estimate of the allowance necessary to cover estimated probable credit losses.  The Company maintains the allowance at a level that it deems adequate to absorb all reasonably anticipated probable losses from specifically known and other credit risks associated with the portfolio. The allowance for loan losses is established through a provision for loan losses, a direct charge to earnings.  Loan losses are charged against the allowance when management believes that the collectability of the loan principal is unlikely.  Recoveries on loans previously charged-off are credited to the allowance.

The allowance for loan losses amounted to $34.4 million at June 30, 2019, compared to $33.8 million at December 31, 2018, and $34.8 million at June 30, 2018. The allowance for loan losses to total loans ratio was 1.42% at both June 30, 2019 and December 31, 2018 and 1.51% at June 30, 2018. Based on management's judgment as to the existing credit risks inherent in the loan portfolio, as discussed above under the heading "Credit Quality Indicators," management believes that the Company's allowance for loan losses is adequate to absorb probable losses from specifically known and other probable credit risks associated with the portfolio as of June 30, 2019.

Changes in the allowance for loan losses by portfolio segment for the three months ended June 30, 2019 are presented below: 

(Dollars in thousands)	Cmml Real Estate		Cmml and Industrial		Cmml Constr		Resid. Mortgage		Home Equity			Consumer		Total
Beginning Balance at March 31, 2019	$	17,826	$	10,403	$	3,452	$	1,184	$	627		$	237	$	33,729
Provision	2		647		265		3		(1		)	39		955
Recoveries	—		140		—		—		3			8		151
Less: Charge offs	—		459		—		—		—			25		484
Ending Balance at June 30, 2019	$	17,828	$	10,731	$	3,717	$	1,187	$	629		$	259	$	34,351

Changes in the allowance for loan losses by portfolio classification for the six months endedJune 30, 2019 are presented below: 

(Dollars in thousands)	Cmml Real Estate			Cmml and Industrial		Cmml Constr		Resid. Mortgage		Home Equity			Consumer		Total
Beginning Balance at December 31, 2018	$	18,014		$	10,493	$	3,307	$	1,160	$	629		$	246	$	33,849
Provision	(186		)	241		410		27		(5		)	68		555
Recoveries	—			456		—		—		5			13		474
Less: Charge offs	—			459		—		—		—			68		527
Ending Balance at June 30, 2019	$	17,828		$	10,731	$	3,717	$	1,187	$	629		$	259	$	34,351
Ending allowance balance:
Allocated to loans individually evaluated for impairment	$	5		$	2,307	$	—	$	5	$	—		$	32	$	2,349
Allocated to loans collectively evaluated for impairment	$	17,823		$	8,424	$	3,717	$	1,182	$	629		$	227	$	32,002

Changes in the allowance for loan losses by portfolio segment for the three months ended June 30, 2018 are presented below:

(Dollars in thousands)	Cmml Real Estate		Cmml and Industrial			Cmml Constr		Resid. Mortgage		Home Equity		Consumer			Total
Beginning Balance at March 31, 2018	$	18,300	$	11,171		$	3,283	$	914	$	629	$	227		$	34,524
Provision	114		(109		)	261		25		16		(7		)	300
Recoveries	—		57			—		—		—		12			69
Less: Charge offs	—		76			—		—		—		20			96
Ending Balance at June 30, 2018	$	18,414	$	11,043		$	3,544	$	939	$	645	$	212		$	34,797

Changes in the allowance for loan losses by portfolio classification for the six months endedJune 30, 2018 are presented below: 

(Dollars in thousands)	Cmml Real Estate		Cmml and Industrial		Cmml Constr			Resid. Mortgage		Home Equity		Consumer		Total
Beginning Balance at December 31, 2017	$	17,545	$	9,669	$	3,947		$	904	$	608	$	242	$	32,915
Provision	869		1,326		(403		)	35		36		37		1,900
Recoveries	—		165		—			—		1		17		183
Less: Charge offs	—		117		—			—		—		84		201
Ending Balance at June 30, 2018	$	18,414	$	11,043	$	3,544		$	939	$	645	$	212	$	34,797
Ending allowance balance:
Allocated to loans individually evaluated for impairment	$	42	$	2,621	$	—		$	3	$	—	$	17	$	2,683
Allocated to loans collectively evaluated for impairment	$	18,372	$	8,422	$	3,544		$	936	$	645	$	195	$	32,114

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Leases

6 Months Ended

Jun. 30, 2019

Leases [Abstract]

Lessee, Operating Leases

Leases

As of June 30, 2019, the Company had 16 operating real estate leases. The Company's leased facilities are contracted under various non-cancelable operating leases, most of which provide options to the Company to extend the lease periods and include periodic rent adjustments. While the Company typically exercises its option to extend lease terms, the lease contains provisions that allow the Company, upon notification, to terminate the lease at the end of the lease term, or any option period. Several leases also provide the Company the right of first refusal should the property be offered for sale or purchase options at specified periods mutually agreeable to the parties.  As of June 30, 2019, the Company had an agreement to purchase one of the leased buildings in its main campus; the transaction was finalized in July 2019.

On January 1, 2019, the Company adopted ASU No. 2016-02, "Leases (Topic 842)." Under this ASU, as amended, lessees are required to recognize lease ROU assets and lease liabilities on the balance sheet for all leases with terms longer than 12 months. The lease liability represents the present value of the future lease payments. The ROU asset includes the lease liability, lease prepayments and indirect costs, less accrued lease liabilities. For the Company, this ASU primarily impacted operating leases on our facilities, mainly branch leases, and as a result the Company recorded, on its consolidated balance sheet a lease liability of $18.0 million and ROU asset of $19.0 million on January 1, 2019 related to these leases.

Upon adoption of this ASU, the Company elected the following practical expedients:

• to not reassess, among other things, the historical lease classification, and

• to use hindsight to assess lease terms and impairment of the ROU asset.

The Company excludes leases with a term of 12 months or less from the recorded lease liability and ROU asset and accounts for lease and non-lease components separately. In order to calculate the lease liability, the Company used its incremental borrowing rate as the discount rate to determine the net present value of the lease liability. In determining the term of a lease, the Company included options renewal periods that it considered reasonably certain to exercise, which generally resulted in the inclusion of all lease option periods.

The Company recognizes lease expense on a straight-line basis in the "Occupancy and Equipment Expenses" line item within the non-interest expense section of the consolidated income statement. Lease expenses, consisting of operating lease costs and variable lease costs, for the three and six months endedJune 30, 2019 were $373 thousand and $707 thousand, respectively. Variable lease costs and short-term lease expenses during this period were immaterial.

The weighted average remaining lease term for operating leases at June 30, 2019 was 27.7 years, and the weighted average discount rate was 3.79%.

At June 30, 2019, the remaining undiscounted cash flows by year of these lease liabilities were as follows:

(Dollars in thousands)	Operating Leases
2019 (six remaining months)	$	629
2020	1,242
2021	1,242
2022	1,245
2023	1,252
Thereafter	24,599
Total lease payments	$	30,209
Less: Imputed interest	11,827
Total lease liability	$	18,382

In addition, the Company currently collects rent through non-cancellable leases for a small portion of the overall square-footage within its Lowell, Massachusetts campus headquarters and at one of its branch locations. These leases are deemed immaterial.

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Deposits

6 Months Ended

Jun. 30, 2019

Deposits [Abstract]

Deposits

Deposits

Deposits are summarized as follows:

(Dollars in thousands)	June 30, 2019		December 31, 2018
Non-interest checking	$	822,455	$	765,029
Interest-bearing checking	496,828		403,497
Savings	209,477		193,214
Money market	1,006,526		862,028
CDs $250,000 or less	222,879		215,200
CDs greater than $250,000	71,983		69,031
Total customer deposits	2,830,148		2,507,999
Brokered deposits (1)	—		56,783
Total deposits	$	2,830,148	$	2,564,782

___________________________________

(1) Brokered CDs which are $250,000 and under.

Total customer deposits include reciprocal balances from checking, money market deposits and CDs received from participating banks in nationwide deposit networks as a result of our customers electing to participate in Company offered programs which allow for enhanced FDIC insurance. Essentially, the equivalent of the customers' original deposited funds comes back to the Company and are carried within the appropriate category under total customer deposits. The Company's balances in these reciprocal products were $412.0 million and $342.4 million at June 30, 2019 and December 31, 2018, respectively.

See Note 13, "Fair Value Measurements," to the Company's unaudited consolidated interim financial statements, contained below, for further information regarding the Company's fair value measurements for deposits.

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Borrowed Funds and Subordinated Debt

6 Months Ended

Jun. 30, 2019

Debt Disclosure [Abstract]

Borrowed Funds and Subordinated Debt

Borrowed Funds and Subordinated Debt

The Company had $484 thousand in borrowed funds at June 30, 2019 linked to outstanding commercial loans under various community reinvestment programs of the FHLB. At December 31, 2018, borrowed funds consisted of FHLB borrowings amounting to $100.5 million.

The Company had outstanding subordinated debt (net of deferred issuance costs) of $14.9 million at both June 30, 2019 and December 31, 2018, which consisted of $15.0 million in aggregate principal amount of Fixed-to-Floating Rate Subordinated Notes (the "Notes") issued in January 2015, with a 15 year term. Original debt issuance costs were $190 thousand and have been netted against the subordinated debt on the consolidated balance sheet in accordance with accounting guidance. These costs are being amortized to interest expense over the life of the Notes.

The Notes are intended to qualify as Tier 2 capital for regulatory purposes and pay interest at a fixed rate of 6.00% per annum through January 30, 2025, after which floating rates apply. Refer to Note 7, "Borrowed Funds and Subordinated Debt," to the Company's audited consolidated financial statements contained in the Company's 2018 Annual Report on Form 10-K for additional information about the Company's subordinated debt.

See Note 2, "Investments," and Note 3, "Loans," to the Company's unaudited consolidated interim financial statements, contained above, for further information regarding securities and loans pledged for borrowed funds. Refer to the "Liquidity" and "Borrowed Funds" sections in the "Financial Condition" section in Item 2, "Management's Discussion and Analysis of financial Condition and Results of Operation," for additional information about other sources of funding available to the Company and the Company's borrowing capacity.

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Derivatives and Hedging Activities

6 Months Ended

Jun. 30, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives and Hedging Activities

Derivatives and Hedging Activities

Interest-rate lock commitments related to the origination of mortgage loans that will be sold are considered derivative instruments.  The commitments to sell loans are also considered derivative instruments. The Company generally does not pool mortgage loans for sale, but instead sells the loans on an individual basis. To reduce the net interest-rate exposure arising from its loan sale activity, the Company enters into the commitment to sell these loans at essentially the same time that the interest-rate lock commitment is quoted on the origination of the loan. The Company estimates the fair value of these derivatives based on current secondary mortgage market prices. At June 30, 2019 and December 31, 2018, the estimated fair value of the Company's interest-rate lock commitments and commitments to sell these mortgage loans were deemed immaterial.

The Company may use interest-rate swaps as part of its interest rate risk management strategy. Interest-rate swap agreements may be entered into as hedges against future interest-rate fluctuations on specifically identified assets or liabilities. The Company had no derivative fair value hedges or derivative cash flow hedges at June 30, 2019 or December 31, 2018.

The Company has a "Back-to-Back Swap" program whereby the Bank enters into an interest-rate swap with a qualified commercial banking customer and simultaneously enters into an equal and opposite interest-rate swap with a swap counterparty. The customer interest-rate swap agreement allows commercial banking customers to convert a floating-rate loan payment to a fixed-rate payment.

The transaction structure effectively minimizes the Bank's net risk exposure resulting from such transactions. Customer-related credit risk is minimized by the cross collateralization of the loan and the interest-rate swap agreement.

Back-to-Back swaps are not speculative; rather, the transactions result from a service the Company provides to certain commercial customers. Back-to-Back swaps do not meet hedge accounting requirements and therefore changes in the fair value of both the customer swaps and the counterparty swaps, which have an offsetting relationship, are recognized directly in earnings. As a result of this offsetting relationship, there were no net gains or losses recognized in income on Back-to-Back swaps during the six months endedJune 30, 2019 or June 30, 2018.

Each Back-to-Back swap transaction consists of two interest-rate swaps (a customer swap and offsetting counterparty swap) and amounted to a total number of eight interest-rate swaps outstanding at both June 30, 2019 and December 31, 2018, with an aggregate notional amount of $37.1 million and $37.7 million on those respective dates.

Asset derivatives are included in the line item "Prepaid expenses and other assets," and liability derivatives are included in the "Accrued expenses and other liabilities" line item on the consolidated balance sheets, respectively. Interest-rate swaps with the counterparty are subject to master netting agreements, while interest-rate swaps with customers are not.

The table below presents the fair value and classification of the Company's derivative financial instruments for the periods presented:

	As of June 30, 2019				As of December 31, 2018
(Dollars in thousands)	Asset Derivatives		Liability Derivatives		Asset Derivatives		Liability Derivatives
Interest-rate contracts - pay floating, receive fixed	$	559	$	207	$	45	$	723
Interest-rate contracts - pay fixed, receive floating	—		352		678		—
Total interest-rate swaps	$	559	$	559	$	723	$	723

By using derivative financial instruments, the Company exposes itself to counterparty-credit risk. Credit risk is the risk of failure by the counterparty to perform under the terms of the derivative contract. When the fair value of a derivative contract is positive, the counterparty owes the Company, which creates credit risk for the Company. When the fair value of a derivative is negative, the Company owes the counterparty and, therefore, it does not possess credit risk. The credit risk in derivative instruments is mitigated by entering into transactions with highly-rated counterparties that management believes to be creditworthy. Additionally, counterparty interest rate swaps contain provisions for collateral to be posted if the derivative exposure exceeds a threshold amount.

The Company has one counterparty and it was rated A and A2 by Standard & Poor's and Moody's, respectively, at June 30, 2019. The Company had no credit risk exposure at June 30, 2019 and $678 thousand at December 31, 2018, respectively, relating to interest-rate swaps with counterparties. The Company posted cash collateral of $400 thousand at June 30, 2019. Collateral posted by the Company is restricted, it is considered an asset of the Company and is carried on the Company's consolidated balance sheet. At December 31, 2018, the Company held cash collateral of $850 thousand. Collateral held by the Company is restricted and not considered an asset of the Company. Therefore, it is not carried on the Company's consolidated balance sheet.

The table below presents the Company's liability derivative position and the potential effect of the netting arrangement on its financial position, as of the period presented. As noted above, interest-rate swaps with customers are not subject to master netting agreements and therefore are not included in the table below.

	As of June 30, 2019
(Dollars in thousands)	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Statement of Financial Position		Net Amounts of Liabilities Presented in the Statement of Financial Position
Liabilities Derivatives
Interest-rate contracts - pay fixed, receive floating	$	559	$	207	$	352

The table below presents the Company's asset derivative position and the potential effect of the netting arrangement on its financial position, as of the period presented. As noted above, interest-rate swaps with customers are not subject to master netting agreements and therefore are not included in the table below.

	As of December 31, 2018
(Dollars in thousands)	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Statement of Financial Position		Net Amounts of Assets Presented in the Statement of Financial Position
Asset Derivatives
Interest-rate contracts - pay fixed, receive floating	$	723	$	45	$	678

The Company's interest-rate swaps with counterparties contain credit-risk-related contingent provisions. These provisions provide the counterparty with the right to terminate its derivative positions and require the Company to settle its obligations under the agreements if the Company defaults on certain of its indebtedness.

The Company also participates in loans originated by third party banks, where the originating bank utilizes a back-to-back interest-rate swap structure; however, the Company is not a party to the swap agreements. Under the terms of the loan participations, the Company has accepted contingent liabilities that would only be realized if the swaps were terminated early and there were outstanding losses not covered by the underlying borrowers and the borrowers' pledged collateral.  If applicable, the Company's swap-loss exposure would be equal to the percentage of the Company's participation in the underlying loan applied to the originating bank's swap loss.  At both June 30, 2019 and December 31, 2018, the Company had one such participation loan. At June 30, 2019, management considers the risk of material swap-loss exposure related to this participation loan to be unlikely based on the swap market value, as well as the borrower's financial and collateral strength.

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Stockholder's Equity

6 Months Ended

Jun. 30, 2019

Equity [Abstract]

Stockholders' Equity

Stockholders' Equity

Shares Authorized and Share Issuance

The Company's authorized capital is divided into common stock and preferred stock. The Company is authorized to issue 40,000,000 shares of common stock, with a par value of $0.01 per share, and as of June 30, 2019 had 11,806,008 shares of common stock issued and outstanding. The Company is authorized to issue 1,000,000 shares of preferred stock, with a par value of $0.01 per share. No preferred stock has been issued as of the date of this Form 10-Q. Holders of common stock are entitled to one vote per share and are entitled to receive dividends if, as and when declared by the Company's Board of Directors (the "Board"). Dividend and liquidation rights of the common stock may be subject to the rights of any outstanding preferred stock.

The Company has a shareholders' rights plan. Under the plan, each share of common stock includes a right to purchase under certain circumstances one one-hundredth of a share of the Company's Series A Junior Participating Preferred Stock, par value $0.01 per share, at a purchase price of $122.50 per one one-hundredth of a preferred share, subject to adjustment, or, in certain circumstances, to receive cash, property, shares of common stock or other securities of the Company. The rights are not presently exercisable and remain attached to the shares of common stock until the occurrence of certain triggering events that would ordinarily be associated with an unsolicited acquisition or attempted acquisition of 10% or more of the Company's outstanding shares of common stock. The rights have no voting or dividend privileges, and unless and until they become exercisable, have no dilutive effect on the earnings of the Company. The rights will expire, unless earlier redeemed, exchanged, or otherwise rescinded by the Company, on January 13, 2028.

The Company's stock incentive plans permit the Board to grant, under various terms, stock options (for the purchase of newly issued shares of common stock), common stock, restricted stock awards, restricted stock units and stock appreciation rights to officers and other employees, non-employee directors and consultants.

The Company issues stock options and restricted stock awards to officers and other employees and restricted stock awards and stock compensation in lieu of cash fees to non-employee directors. The restricted stock awards allow for the non-forfeitable receipt of dividends, and the voting of all shares, whether or not vested, throughout the vesting periods at the same proportional level as common shares outstanding. The unvested restricted stock awards are the Company's only participating securities and are included in shares outstanding. Unvested participating restricted awards amounted to 109,501 shares and 91,708 shares as of June 30, 2019 and December 31, 2018, respectively. See Note 12, "Earnings per Share," to the Company's unaudited consolidated interim financial statements, contained below, for additional information regarding unvested participating restricted awards and the Company's earnings per share calculation.

Upon vesting, restricted stock awards may be net share-settled to cover payment for employee tax obligations, resulting in shares of common stock being reacquired by the Company and returned to the pool of shares reserved for issuance under the incentive plans. Chapter 156D of the Massachusetts General Laws, a statute known as the Massachusetts Business Corporation Act, which applies to Massachusetts corporations such as the Company, eliminates the concept of "treasury stock" and provides that shares reacquired by a Massachusetts company will be treated as authorized but unissued shares.

The Company's stock incentive plans also allow for newly issued shares of common stock to be issued without restrictions to officers and other employees, non-employee directors and consultants. From time to time, the Company issues shares to community members for consulting on regional advisory councils and grants shares of fully vested stock as employee anniversary awards. These shares vest immediately and the cost, which is based on the market price on the date of grant and deemed to be immaterial, is expensed in the period in which the services are rendered. See Note 11, "Stock-Based Compensation," to the Company's unaudited consolidated interim financial statements, contained below, for additional information regarding the Company's stock incentive plans.

In addition to shares issued to employees, non-employee directors and community members for consulting on regional advisory councils, and shares issued through equity offerings, the Company maintains a dividend reinvestment and direct stock purchase plan ("DRSPP") which enables stockholders, at their discretion, to elect to reinvest cash dividends paid on their shares of the Company's common stock by purchasing additional shares of common stock from the Company at a purchase price equal to fair market value. Under the DRSPP, stockholders and new investors also have the opportunity to purchase shares of the Company's common stock without brokerage fees, subject to monthly minimums and maximums.

Comprehensive Income

Comprehensive income is defined as all changes to stockholders' equity except investments by and distributions to stockholders.  Net income is one component of comprehensive income, with other components referred to in the aggregate as other comprehensive income.  At June 30, 2019 and June 30, 2018, the Company's only other comprehensive income component is the net unrealized holding gains or losses on available-for-sale debt securities, net of deferred income taxes. Pursuant to GAAP, the Company initially excludes these unrealized holding gains and losses from net income; however, they are later reported as reclassifications out of accumulated other comprehensive income into net income when the debt securities are sold.

See "Capital Resources" in Item 2, "Management's Discussion and Analysis," of this Form 10-Q for the Company's capital ratios and capital adequacy assessment as of June 30, 2019. Refer to Note 10, "Stockholders' Equity," to the Company's audited consolidated financial statements included in the Company's 2018 Annual Report on Form 10-K for additional information relating to capital adequacy requirements, dividends and the DRSPP.

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Supplemental Retirement Plan and Other Postretirement Benefit Obligations

6 Months Ended

Jun. 30, 2019

Retirement Benefits [Abstract]

Employee Benefit Plans

Supplemental Retirement Plans and Other Post-Retirement Benefit Obligations

Supplemental Employee Retirement Plan ("SERP")

The Company has salary continuation agreements with two of its current executive officers and one former executive officer. These salary continuation agreements provide for predetermined fixed-cash supplemental retirement benefits to be provided for a period of 20 years after each individual reaches a defined "benefit age." The individuals covered under the SERP have reached the defined benefit age and are receiving payments under the plan. Additionally, the Company has not recognized service costs in the current or prior year as each officer had previously attained their individually defined benefit age and was fully vested under the plan.

This non-qualified plan represents a direct liability of the Company, and as such has no specific assets set aside to settle the benefit obligation.  The aggregate amount accrued, or the "accumulated benefit obligation," is equal to the present value of the benefits to be provided to the employee or any beneficiary.  Because the Company's benefit obligations provide for predetermined fixed-cash payments, the Company does not have any unrecognized costs to be included as a component of accumulated other comprehensive income. Benefits paid under the plan amounted to $69 thousand and $138 thousand for both the three and six months endedJune 30, 2019 and June 30, 2018, respectively.

Additionally, on December 11, 2018, the Board approved and adopted the Enterprise Bank Supplemental Executive Retirement and Deferred Compensation Plan.  The plan is unfunded and is maintained for the purpose of providing deferred compensation to a certain group of management employees. Please refer to Exhibit 10.17 attached to the Company's 2018 Annual Report on Form 10-K and our Current Report on Form 8-K filed with the SEC on March 22, 2019 for a more complete description of the plan.

Total expenses for both these plans were $108 thousand and $219 thousand for the three and six months endedJune 30, 2019, respectively, compared to $56 thousand and $112 thousand for the three and six months endedJune 30, 2018, respectively. The Company anticipates accruing an additional $209 thousand in total for these SERPs during the remainder of 2019.

Supplemental Life Insurance

The Company has provided supplemental life insurance through split-dollar life insurance arrangements for certain executive and senior officers on whom the Bank owns BOLI.

These arrangements provide a death benefit to the officer's designated beneficiaries that extend to postretirement periods for some of the supplemental life insurance plans. The Company has recognized a liability for these future postretirement benefits.

These non-qualified plans represent a direct liability of the Company and, as such, the Company has no specific assets set aside to settle the benefit obligation.  The funded status is the aggregate amount accrued, or the "accumulated postretirement benefit obligation," which is the present value of the post-retirement benefits associated with this arrangement.

Total net periodic post-retirement benefit cost for supplemental life insurance plans, which consisted mainly of interest costs, were $49 thousand and $99 thousand for the three and six months endedJune 30, 2019, respectively, compared to $44 thousand and $89 thousand for the three and six months endedJune 30, 2018, respectively.

See also Note 11, "Stock-Based Compensation," to the Company's unaudited consolidated interim financial statements, contained below, for further information regarding employee benefits offered in the form of stock options and stock awards.

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Stock-Based Compensation

6 Months Ended

Jun. 30, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-Based Compensation

Stock-Based Compensation

The Company currently has one active individual stock incentive plan: the Enterprise Bancorp, Inc. 2016 Stock Incentive Plan, as amended. As of June 30, 2019, there remained 271,485 shares available for future grants under this plan.

Additionally, the Enterprise Bancorp, Inc 2009 Stock Incentive Plan, as amended, expired in March 2019 with 87,849 unissued shares. As such, this plan is closed for future grants, although awards previously granted under this plan remain outstanding and may be exercised through 2028.

The Company's stock-based compensation expense related to these plans includes stock options and stock awards to officers and other employees included in salary and benefits expense, and stock awards and stock compensation in lieu of cash fees to non-employee directors both included in other operating expenses.  Total stock-based compensation expense was $518 thousand and $944 thousand for the three and six months endedJune 30, 2019, respectively, compared to $500 thousand and $885 thousand for the three and six months endedJune 30, 2018, respectively.

A tax benefit associated with employee exercises and vesting of stock compensation of approximately $17 thousand and $128 thousand was recorded as a reduction of the Company's income tax expense for the three and six months endedJune 30, 2019, respectively, compared with $40 thousand and $235 thousand for the three and six months endedJune 30, 2018, respectively. These amounts, treated as discrete tax items in the period in which they occur, will vary from year to year as a function of the volume of share-based payments vested or exercised and the then-current market price of the Company's stock in comparison to the compensation cost recognized in the Company's unaudited consolidated interim financial statements.

Stock Option Awards

The Company recognized stock-based compensation expense related to stock option awards of $48 thousand and $96 thousand for the three and six months endedJune 30, 2019, respectively, compared to $51 thousand and $102 thousand for the three and six months endedJune 30, 2018, respectively.

The table below provides a summary of the options granted, including the weighted average fair value, the fair value as a percentage of the market value of the stock at the date of grant and the average assumptions used in the model for the periods indicated:

	Six Months Ended June 30,
	2019			2018
Options granted	23,218			14,755
Term in years	10			10
Weighted average assumptions used in the fair value model:
Expected volatility	33		%	37		%
Expected dividend yield	2.75		%	2.10		%
Expected life in years	6.5			6.5
Risk-free interest rate	2.58		%	2.86		%
Weighted average market price on date of grants	$	29.84		$	34.33
Per share weighted average fair value	$	8.70		$	11.98
Fair value as a percentage of market value at grant date	29		%	35		%

Options granted during the first six months of 2019 and 2018 generally vest 50% in year two and 50% in year four, on or about the anniversary date of the awards.

The Company utilizes the Black-Scholes option valuation model in order to determine the per share grant date fair value of option grants.

Restricted Stock Awards

Stock-based compensation expense recognized in association with stock awards, mainly restricted stock awards, amounted to $409 thousand and $710 thousand for the three and six months endedJune 30, 2019, respectively, compared to $387 thousand and $646 thousand for the three and six months endedJune 30, 2018, respectively.

Restricted stock awards are granted at the market price of the Company's common stock on the date of the grant. Employee awards generally vest over four years in equal portions beginning on or about the first anniversary date of the award or are performance-based awards that vest upon the Company achieving certain predefined performance objectives. Non-employee director awards generally vest over two years in equal portions beginning on or about the first anniversary date of the award.

The table below provides a summary of restricted stock awards granted during the periods indicated:

	Six Months Ended June 30,
Restricted Stock Awards (number of underlying shares)	2019		2018
Two-year vesting	8,368		7,280
Four-year vesting	22,403		16,666
Performance-based vesting	24,427		20,559
Total restricted stock awards granted	55,198		44,505
Weighted average grant date fair value	$	29.84	$	34.33

Stock in Lieu of Directors' Fees

In addition to restricted stock awards discussed above, the non-employee members of the Company's Board may opt to receive newly issued shares of the Company's common stock in lieu of cash compensation for attendance at Board and Board committee meetings.  Stock-based compensation expense related to these directors' fees amounted to $61 thousand and $138 thousand for the three and six months endedJune 30, 2019, respectively, compared to $62 thousand and $137 thousand for the three and six months endedJune 30, 2018, respectively, and is included in other operating expenses. In January 2019, non-employee directors were issued 7,470 shares of common stock in lieu of 2018 annual cash fees of $250 thousand at a market value price of $33.50 per share, the market value of the common stock on the opt-in measurement date of January 2, 2018.

For further information regarding the Company's stock awards, see Note 9, "Stockholders' Equity," to the Company's unaudited consolidated interim financial statements, contained above, under the caption "Shares Authorized and Share Issuance." There have been no material changes to the terms of the Company's stock incentive plans or the terms for vesting, forfeiture and settlement for options and restricted stock awards granted and outstanding under such plans as reported in the 2018 Annual Report on Form 10-K. Refer to Note 12, "Stock-Based Compensation Plans," to the Company's audited consolidated financial statements in the Company's 2018 Annual Report on Form 10-K for further information on the Company's stock incentive plans, stock options and restricted awards including descriptions of the assumptions used in the valuation model for stock options.

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Earnings Per Share

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Earnings Per Share

Earnings per Share

Basic earnings per share are calculated by dividing net income available to common stockholders by the weighted average number of common shares outstanding (including participating securities) during the year.  The Company's only participating securities are unvested restricted stock awards that contain non-forfeitable rights to dividends. See Note 9, "Stockholders' Equity," under the caption "Shares Authorized and Share Issuance," to the Company's unaudited consolidated interim financial statements above for further information regarding the Company's participating securities. Diluted earnings per share reflects the effect on weighted average shares outstanding of the number of additional shares outstanding if dilutive stock options were converted into common stock using the treasury stock method.

The table below presents the increase in average shares outstanding, using the treasury stock method, for the diluted earnings per share calculation for the periods indicated:

	Three months ended June 30,		Six months ended June 30,
	2019	2018	2019	2018
Basic weighted average common shares outstanding	11,798,942	11,687,182	11,764,901	11,658,046
Dilutive shares	35,565	77,229	43,932	75,345
Diluted weighted average common shares outstanding	11,834,507	11,764,411	11,808,833	11,733,391

There were 52,571 and 52,478 stock options for the three and six months endedJune 30, 2019, respectively, that were determined to be anti-dilutive and therefore excluded from the calculation of dilutive shares for those periods. There were 29,260 stock options for both the three and six months endedJune 30, 2018 that were determined to be anti-dilutive and therefore excluded from the calculation of dilutive shares for those periods. These stock options, which were not dilutive at those dates, may potentially dilute earnings per share in subsequent periods.

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Fair Value Measurements

6 Months Ended

Jun. 30, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

The FASB defines the fair value of an asset or liability to be the price which a seller would receive in an orderly transaction between market participants (an exit price) and also establishes a fair value hierarchy segregating fair value measurements using three levels of inputs: (Level 1) quoted market prices in active markets for identical assets or liabilities; (Level 2) significant other observable inputs, including quoted prices for similar items in active markets, quoted prices for identical or similar items in markets that are not active, inputs such as interest rates and yield curves, volatilities, prepayment speeds, credit risks and default rates which provide a reasonable basis for fair value determination or inputs derived principally from observed market data; and (Level 3) significant unobservable inputs for situations in which there is little, if any, market activity for the asset or liability.  Unobservable inputs must reflect reasonable assumptions that market participants would use in pricing the asset or liability, which are developed based on the best information available under the circumstances.

The following tables summarize significant assets and liabilities carried at fair value and placement in the fair value hierarchy at the dates specified:

	June 30, 2019
			Fair Value Measurements using:
(Dollars in thousands)	Fair Value		(Level 1)		(Level 2)		(Level 3)
Assets measured on a recurring basis:
Debt securities	$	465,944	$	—	$	465,944	$	—
Equity securities	2,428		2,428		—		—
FHLB stock	1,576		—		—		1,576
Interest-rate swaps	559		—		559		—
Assets measured on a non-recurring basis:
Impaired loans (collateral dependent)	1,875		—		—		1,875
Other real estate owned	255		—		—		255
Liabilities measured on a recurring basis:
Interest-rate swaps	$	559	$	—	$	559	$	—

	December 31, 2018
			Fair Value Measurements using:
(Dollars in thousands)	Fair Value		(Level 1)		(Level 2)		(Level 3)
Assets measured on a recurring basis:
Debt securities	$	431,473	$	—	$	431,473	$	—
Equity securities	1,448		1,448		—		—
FHLB stock	5,357		—		—		5,357
Interest-rate swaps	723		—		723		—
Assets measured on a non-recurring basis:
Impaired loans (collateral dependent)	2,574		—		—		2,574
Liabilities measured on a recurring basis:
Interest-rate swaps	$	723	$	—	$	723	$	—

The Company did not transfer any assets between the fair value measurement levels during the six months endedJune 30, 2019 or the year ended December 31, 2018.

All of the Company's debt securities are considered "available-for-sale" and are carried at fair value.  The debt security category above includes federal agency obligations, commercial and residential federal agency MBS, municipal securities, corporate bonds, and CDs, as held at those dates.  The Company utilizes third-party pricing vendors to provide valuations on its debt securities.  Fair values provided by the vendors were generally determined based upon pricing matrices utilizing observable market data inputs for similar or benchmark securities in active markets and/or based on a matrix pricing methodology which employs The Bond Market Association's standard calculations for cash flow and price/yield analysis, live benchmark bond pricing and terms/condition data available from major pricing sources.  Therefore, management regards the inputs and methods used by third-party pricing vendors to be "Level 2 inputs and methods" as defined in the "fair value hierarchy." The Company periodically obtains a second price from an impartial third party on debt securities to assess the reasonableness of prices provided by the primary independent pricing vendor.

The Company's equity portfolio fair value is measured based on quoted market prices for the shares; therefore, these securities are categorized as Level 1 within the fair value hierarchy.

The Bank is required to purchase FHLB stock at par value in association with advances from the FHLB. This stock is classified as a restricted investment and carried at cost which management believes approximates fair value; therefore, these securities are categorized as Level 3 measures. 

Impaired loan balances in the table above represent those collateral dependent commercial loans where management has estimated the probable credit loss by comparing the loan's carrying value against the expected realizable fair value of the collateral (appraised value, or internal analysis, less estimated cost to sell, adjusted as necessary for changes in relevant valuation factors subsequent to the measurement date).  Certain inputs used in these assessments, and possible subsequent adjustments, are not always observable, and therefore, collateral dependent loans are categorized as Level 3 within the fair value hierarchy.  A specific allowance is assigned to the collateral dependent loan for the amount of management's estimated probable credit loss.  The specific allowances assigned to the collateral dependent loans amounted to $1.6 million at both June 30, 2019 and December 31, 2018.

Real estate acquired by the Company through foreclosure proceedings or the acceptance of a deed in lieu of foreclosure is classified as OREO. When property is acquired, it is recorded at the estimated fair value of the property acquired, less estimated costs to sell, establishing a new cost basis. The estimated fair value is based on market appraisals and the Company's internal analysis. Certain inputs used in appraisals or the Company's internal analysis, are not always observable, and therefore, OREO may be categorized as Level 3 within the fair value hierarchy.

The fair values for the interest-rate swap assets and liabilities represent a FASB Level 2 measurement and are based on settlement values adjusted for credit risks and observable market interest rate curves. The settlement values are based on discounted cash flow analysis, a widely accepted valuation technique, reflecting the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves. Credit risk adjustments consider factors such as the likelihood of default by the Company and its counterparties, its net exposures and remaining contractual life. The change in value of interest-rate swap assets and liabilities attributable to credit risk was not significant during the reported periods. Refer also to Note 8, "Derivatives and Hedging Activities," to the Company's unaudited consolidated interim financial statements, contained above, for additional information on the Company's interest-rate swaps.

Letters of credit are conditional commitments issued by the Company to guarantee the financial obligation or performance of a customer to a third party.  The fair value of these commitments was estimated to be the fees charged to enter into similar agreements, and accordingly these fair value measures are deemed to be FASB Level 2 measurements.  In accordance with the FASB, the estimated fair values of these commitments are carried on the consolidated balance sheet as a liability and amortized to income over the life of the letters of credit, which are typically one year.  The estimated fair value of these commitments carried on the consolidated balance sheet at June 30, 2019 and December 31, 2018 were deemed immaterial.

Interest-rate lock commitments related to the origination of mortgage loans that will be sold are considered derivative instruments.  The commitments to sell loans are also considered derivative instruments. The Company generally does not pool mortgage loans for sale, but instead sells the loans on an individual basis. To reduce the net interest rate exposure arising from its loan sale activity, the Company enters into the commitment to sell these loans at essentially the same time that the interest-rate lock commitment is quoted on the origination of the loan. The Company estimates the fair value of these derivatives based on current secondary mortgage market prices. These commitments are accounted for in accordance with FASB guidance.  The fair values of the Company's derivative instruments are deemed to be FASB Level 2 measurements.  At June 30, 2019 and December 31, 2018, the estimated fair value of the Company's interest-rate lock commitments and commitments to sell these mortgage loans were deemed immaterial.

The following table presents additional quantitative information about assets measured at fair value on a recurring and non-recurring basis for which the Company utilized Level 3 inputs (significant unobservable inputs for situations in which there is little, if any, market activity for the asset or liability) to determine fair value as of June 30, 2019 and December 31, 2018:

	Fair Value
(Dollars in thousands)	June 30, 2019		December 31, 2018		Valuation Technique	Unobservable Input	Unobservable Input Value or Range
Assets measured on a recurring basis:
FHLB stock	$	1,576	$	5,357	Stated Par Value	N/A	N/A
Assets measured on a non-recurring basis:
Impaired loans(collateral dependent)	$	1,875	$	2,574	Appraisal of collateral	Appraisal adjustments (1)	5% - 50%
Other real estate owned	$	255	$	—	Appraisal of collateral	Appraisal adjustments (1)	0% - 30%

__________________________________________

(1)    Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses.

Estimated Fair Values of Assets and Liabilities

In addition to disclosures regarding the measurement of assets and liabilities carried at fair value on the consolidated balance sheet, the Company is also required to disclose fair value information about financial instruments for which it is practicable to estimate that value, whether or not recognized on the consolidated balance sheet. 

The carrying values, estimated fair values and placement in the fair value hierarchy of the Company's consolidated financial instruments for which fair value is only disclosed but not recognized on the consolidated balance sheet at the dates indicated are summarized as follows:

	June 30, 2019
					Fair value measurement
(Dollars in thousands)	Carrying Amount		Fair Value		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Financial assets:
Loans held for sale	$	1,376	$	1,387	$	—	$	1,387	$	—
Loans, net	2,379,751		2,384,279		—		—		2,384,279
Financial liabilities:
CDs (including brokered)	294,862		295,456		—		295,456		—
Borrowed funds	484		339		—		339		—
Subordinated debt	14,866		15,187		—		—		15,187

	December 31, 2018
					Fair value measurement
(Dollars in thousands)	Carrying Amount		Fair Value		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Financial assets:
Loans held for sale	$	701	$	710	$	—	$	710	$	—
Loans, net	2,353,657		2,331,076		—		—		2,331,076
Financial liabilities:
CDs (including brokered)	341,014		339,308		—		339,308		—
Borrowed funds	100,492		100,312		—		100,312		—
Subordinated debt	14,860		14,300		—		—		14,300

Excluded from the tables above are certain financial instruments with carrying values that approximated their fair value at the dates indicated, as they were short-term in nature or payable on demand.  These include cash and cash equivalents and non-term deposit accounts. The respective carrying values of these instruments would all be classified within Level 1 of their fair value hierarchy.

Also excluded from these tables are the fair values of commitments for unused portions of lines of credit and commitments to originate loans that were short-term, at current market rates and estimated to have no significant change in fair value.

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Supplemental Cash Flow

6 Months Ended

Jun. 30, 2019

Supplemental Cash Flow [Abstract]

Cash Flow, Supplemental Disclosures [Text Block]

Supplemental Cash Flow Information

The supplemental cash flow information for the six months ended June 30, 2019 and June 30, 2018 is as follows:

	Six months ended June 30, 2019
(Dollars in thousands)	2019		2018
Supplemental financial data:
Cash paid for: interest	$	10,753	$	5,559
Cash paid for: income taxes	5,671		4,663
Cash paid for: lease liability	576		—
Supplemental schedule of non-cash activity:
Net purchases of investment securities not yet settled	2,950		351
Transfer from loans to other real estate owned	255		—
ROU lease assets: operating leases(1)	19,635		—

_________________________________________

(1) This represents the ROU lease asset that was recorded upon adoption of ASC 842 and new leases added in the current year and is primarily offset by a corresponding lease liability.

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Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2019

Accounting Policies [Abstract]

Principles of Consolidation

The accompanying unaudited consolidated interim financial statements and these notes should be read in conjunction with the December 31, 2018 audited consolidated financial statements and notes thereto contained in the 2018 Annual Report on Form 10-K of Enterprise Bancorp, Inc. as filed with the Securities and Exchange Commission (the "SEC") on March 13, 2019 (the "2018 Annual Report on Form 10-K").  The Company has not materially changed its significant accounting policies from those disclosed in its 2018 Annual Report on Form 10-K. See Item (f) "Recent Accounting Pronouncements" under the subheading "Accounting pronouncements adopted by the Company" below in this Note 1.

The accompanying unaudited consolidated interim financial statements of Enterprise Bancorp, Inc. (the "Company," "Enterprise," "we," or "our"), a Massachusetts corporation, include the accounts of the Company and its wholly owned subsidiary, Enterprise Bank and Trust Company, commonly referred to as Enterprise Bank (the "Bank").  The Bank is a Massachusetts trust company and state chartered commercial bank organized in 1989. Substantially all of the Company's operations are conducted through the Bank and its subsidiaries.

The Bank's subsidiaries include Enterprise Insurance Services, LLC and Enterprise Wealth Services, LLC, both organized under the laws of the State of Delaware, engage in insurance sales activities and offer non-deposit investment products and services, respectively.  In addition, the Bank has the following subsidiaries that are incorporated in the Commonwealth of Massachusetts and classified as security corporations in accordance with applicable Massachusetts General Laws: Enterprise Security Corporation; Enterprise Security Corporation II; and Enterprise Security Corporation III.  The security corporations, which hold various types of qualifying securities, are limited to conducting securities investment activities that the Bank itself would be allowed to conduct under applicable laws.

The Company's headquarters and the Bank's main office are located at 222 Merrimack Street in Lowell, Massachusetts. At June 30, 2019, the Company had 24 full service branch banking offices serving the Greater Merrimack Valley, Nashoba Valley and North Central regions of Massachusetts and Southern New Hampshire (Southern Hillsborough and Rockingham counties). The Company also expects to open branches in Lexington, Massachusetts and North Andover, Massachusetts, pending regulatory approvals, and anticipates that the offices will open in the fall of 2019 and the first half of 2020, respectively. Through the Bank and its subsidiaries, the Company offers a range of commercial, residential and consumer loan products, deposit products and cash management services, electronic and digital banking options, and insurance services.  The Company also provides a range of wealth management, wealth services and trust services delivered via two channels, Enterprise Wealth Management and Enterprise Wealth Services. The services offered through the Bank and its subsidiaries are managed as one strategic unit and represent the Company's only reportable operating segment.

The Federal Deposit Insurance Corporation (the "FDIC") and the Massachusetts Division of Banks (the "Division") have regulatory authority over the Bank.  The Bank is also subject to certain regulatory requirements of the Board of Governors of the Federal Reserve System (the "Federal Reserve Board") and, with respect to its New Hampshire branch operations, the New Hampshire Banking Department.  The business and operations of the Company are subject to the regulatory oversight of the Federal Reserve Board.  The Division also retains supervisory jurisdiction over the Company.

Basis of Accounting

Interim results are not necessarily indicative of results to be expected for the entire year, or any future period.

The accompanying unaudited consolidated interim financial statements and notes thereto have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information and the instructions for SEC Form 10-Q through the rules and interpretive releases of the SEC under federal securities law. In the opinion of management, the accompanying unaudited consolidated interim financial statements reflect all necessary adjustments consisting of normal recurring accruals for a fair presentation.  All significant intercompany balances and transactions have been eliminated in the accompanying unaudited consolidated interim financial statements.

Reclassifications

Certain previous years' amounts in the audited consolidated financial statements, and notes thereto, have been reclassified to conform to the current year's presentation.

Subsequent events

The Company has evaluated subsequent events and transactions from June 30, 2019 through the date this Quarterly Report on Form 10-Q (this "Form 10-Q") was filed with the SEC for potential recognition or disclosure as required by GAAP and determined that there were no material subsequent events requiring recognition or disclosure.

Uses of Estimates

In preparing the unaudited consolidated interim financial statements in conformity with GAAP, management is required to exercise judgment in determining many of the methodologies, assumptions and estimates to be utilized.  These assumptions and estimates affect the reported values of assets and liabilities as of the balance sheet dates and income and expenses for the period then ended.  As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates should the assumptions and estimates used be incorrect or change over time due to changes in circumstances.  Changes in those estimates resulting from continuing changes in the economic environment and other factors will be reflected in the consolidated financial statements and results of operations in future periods.

As discussed in the Company's 2018 Annual Report on Form 10-K, the three most significant areas in which management applies critical assumptions and estimates are: the estimates of the allowance for loan losses, impairment review of investment securities, and the impairment review of goodwill.  Refer to Note 1, "Summary of Significant Accounting Policies," to the Company's audited consolidated financial statements included in the Company's 2018 Annual Report on Form 10-K for accounting policies related to these significant estimates.

Restricted Cash and Investments

Restricted Cash and Investments

Certain of the Company's derivative agreements contain provisions for collateral to be posted if the derivative exposure exceeds a threshold amount. When the Company has pledged cash as collateral for this purpose, the cash is carried as restricted cash within "Interest-earning Deposits." See Note 8, "Derivatives and Hedging Activities," to the Company's unaudited consolidated interim financial statements below for more information about the Company's collateral related to its derivatives.

The Bank is also required by the Federal Reserve Bank of Boston ("FRB") to maintain in reserves certain amounts of vault cash and/or deposits with the FRB. The average daily cash balance on hand for reserve requirements included in "Cash and Due from Banks" was approximately $8.8 million, based on the two-week computation period encompassing June 30, 2019.

As a member of the FHLB, the Company is required to purchase certain levels of FHLB capital stock at par value in association with outstanding advances from the FHLB.  From time-to-time, the FHLB may initiate the repurchase, at par value, of "excess" levels of its capital stock held by member banks. This stock is classified as a restricted investment and is carried at cost, which management believes approximates fair value.  FHLB stock represents the only restricted investment held by the Company.

Management regularly reviews its holdings of FHLB stock for other-than-temporary impairment ("OTTI"). Based on management's periodic review, the Company has not recorded any OTTI charges on this investment to date. If it was determined that a write-down of FHLB stock was required, impairment would be recognized through a charge to earnings.

See Note 2, "Investment Securities," to the Company's unaudited consolidated interim financial statements below for additional information on management's OTTI review.

Revenue Recognition

Revenue Recognition-Accounting Standard Codification ("ASC") Topic 606

While the majority of the Company's revenue is generated from contracts with customers, our primary sources of revenue, interest and dividend income (primarily loan interest income), are outside of the scope of ASC 606, "Revenue from Contracts with Customers-Topic 606," and are accounted for under other ASC topics. The core principles of this standard require an entity to recognize revenue to depict the transfer of goods and services to customers as performance obligations are satisfied.

The primary areas of income within the scope of ASC 606, wealth management fees and deposit and interchange fees, which are components of non-interest income on the Company's consolidated statements of income, are discussed below.

Wealth management fees consist of income generated through Enterprise Wealth Management and Enterprise Wealth Services. Enterprise Wealth Management income is primarily generated by managing customers' financial assets. Revenue is recognized as our performance obligation is completed each month. Enterprise Wealth Services revenue is generated through a third-party arrangement to refer, manage and service customers. For new sales and referrals along with transactional type charges, the performance obligation is based on a point in time and the payment is received and revenue is recognized in the same month as the revenue-generating activity. For managing and servicing customers, revenue is recognized when our performance obligation is completed each month.

Deposit and interchange fees are comprised of deposit account related charges and income generated from electronic payment interchanges. Deposit account charges consist of certain transactional analysis fees net of earning balance credits, monthly account service fees, and transactional fees such as overdraft fees. Analysis and monthly services fees are recognized over the period the service is performed. For transactional fees, the performance obligation and the revenue are recognized at a point of time and payment is typically received as the service is rendered. Interchange income is generated primarily from retail debit card transactions processed through the card payment network. The performance obligation and the revenue are recognized when the service is performed.

The following non-interest income components are not subject to ASC 606: income on bank-owned life insurance ("BOLI"), net gains/losses on sales of investment securities, and net gains on sales of loans, and are covered under other ASC topics. The remaining revenue items in non-interest income are not material.

See also Note 1, "Summary of Significant Accounting Policies," to the Company's audited consolidated financial statements in the Company's 2018 Annual Report on Form 10-K for additional accounting policies on revenue recognition related to income generated on investments, gains and losses on debt security sales, net gains on loans held for sale, and loans.

Income Taxes

Income Taxes

The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction and in the states of Massachusetts and New Hampshire within the directives of the respective enacted tax legislation. The Company uses the asset and liability method of accounting for income taxes.  Under this method, deferred tax assets and liabilities are recognized for the future tax expense or benefit attributable to differences between the financial statement carrying amounts and the tax basis of assets and liabilities.  The deferred tax assets and liabilities are reflected at currently-enacted 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 will be adjusted accordingly through the provision for income taxes in the period that includes the enactment date.

The Company's policy is to classify interest resulting from underpayment of income taxes as income tax expense in the first period the interest would begin accruing according to the provisions of the relevant tax law.  The Company classifies penalties resulting from underpayment of income taxes as income tax expense in the period for which the Company claims or expects to claim an uncertain tax position or in the period in which the Company's judgment changes regarding an uncertain tax position.

The income tax provisions will differ from the expense that would result from applying the federal statutory rate to income before taxes, due primarily to the impact of state tax expense, tax-exempt interest from certain investment securities, loans and BOLI and tax benefits from equity compensation deductions.

The Company did not have any unrecognized tax benefits accrued as income tax liabilities or receivables or as deferred tax items at June 30, 2019.  The Company is subject to U.S. federal and state income tax examinations by taxing authorities for the 2015 through 2018 tax years.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

The tables below summarize recent accounting pronouncements issued by the Financial Accounting Standards Board("FASB") that were either recently adopted by the Company or have not yet been adopted. For pronouncements not yet adopted, the effective date listed below is in line with the required adoption date for public business entities, such as the Company, though certain accounting pronouncements may permit early adoption. For more detailed information regarding these pronouncements, refer to the FASB's Accounting Standards Updates("ASU").

Accounting pronouncements adopted by the company
Standard/Effective Date	Description	Effect on Financial Statements or Other Significant Matters
ASU 2016-02, Leases (ASC Topic 842) January 1, 2019	This ASU supersedes previous leasing guidance in Topic 840, and lessees are now required to recognize lease (right-of-use or "ROU") assets and lease liabilities on the balance sheet for all leases with terms longer than 12 months.	See Note 5, "Leases," to the Company's unaudited consolidated interim financial statements, contained below, for further information on the impact of the standard's adoption on the Company.
ASU 2017-02, Derivatives and Hedging (ASC Topic 815): Targeted Improvements to Accounting for Hedging Activities January 1, 2019	The objective of the ASU is to better align hedge accounting with an organization's risk management activities in the financial statements. In addition, the ASU simplifies the application of hedge accounting guidance in areas where practice issues exist. The amendments expand the strategies that qualify for hedge accounting, change how many hedging relationships are presented in the financial statements and simplify the application of hedge accounting in certain situations, reducing the operational complexities associated with certain existing strategies. New or modified disclosures are required, primarily for fair value and cash flow hedges.	The Company currently does not hold any instruments that meet hedge accounting requirements and therefore the adoption of this ASU in January 2019 did not have an impact on the Company's unaudited consolidated interim financial statements, results of operations or disclosures for the periods covered by the Form 10-Q, however, the Company may utilize hedging strategies in the future.
ASU No. 2018-07, Compensation-Stock-Based Compensation (ASU Topic 718): Improvements to Non-employee Shared-Based Payment Accounting January 1, 2019	The amendments in the ASU expand the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from non-employees except for share-based payments used to effectively provide (1) financing to the issuer or (2) awards granted in conjunction with selling goods or services to customers as part of a contract. Additionally, Topic 718 has been updated for specific guidance on inputs to an option pricing model and the attribution of cost (that is, the period of time over which share-based payment awards vest and the pattern of cost recognition over that period).	The adoption of this standard in January 2019 did not have a material impact on the Company's unaudited consolidated interim financial statements, results of operations or disclosures for the periods covered by the Form 10-Q. See Note 9, "Stockholders' Equity."

Accounting pronouncements not yet adopted by the Company
Standard/Effective Date	Description	Effect on Financial Statements or Other Significant Matters
ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments January 1, 2020	The amendments in this ASU require a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. Previously, when credit losses were measured under GAAP, an entity generally only considered past events and current conditions in measuring the incurred loss and generally recognition of the full amount of credit losses was delayed until the loss was probable of occurring. The amendments in this ASU eliminate the probable initial recognition threshold in current GAAP and, instead, reflect an entity's current estimate of all expected credit losses (commonly known as "CECL"). The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the report amount. An entity must use judgment in determining the relevant information and estimation methods that are appropriate in its circumstances. The income statement reflects the measurement of credit losses for newly recognized financial assets, as well as the expected increases or decreases of expected credit losses that have taken place during the period. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. Credit losses on available-for-sale debt securities should be measured in a manner similar to current GAAP. However, the amendments in this ASU require that credit losses be presented as an allowance rather than as a write-down. Unlike current GAAP, the ASU provides for reversals of credit losses in future period net income in situations where the estimate of loss declines. An entity will apply the amendments in this ASU through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective (that is, a modified-retrospective approach).	In December 2018, banking regulators issued a final rule, effective April 1,2019, that addresses the regulatory capital treatment of credit loss allowances under the CECL methodology and allows banking organizations an option to phase in the day-one regulatory capital effects of CECL adoption over three years. The Company has established a project committee and an implementation plan for this ASU. The impact of the adoption of ASU No. 2016-13 on the Company's operations, financial results, disclosures, and controls is under evaluation.
ASU No. 2017-04, Intangibles-Goodwill and Other (ASU Topic 350)- Simplifying the Test for Goodwill Impairment January 1, 2020	The main provision in this ASU eliminated Step 2 of the goodwill impairment test and instead requires an entity to perform its annual, or interim, goodwill impairment test by comparing the fair value of the reporting unit with its carrying amount. An impairment charge would be recognized for the amount the carrying value exceeds the reporting unit's fair value as long as the amount recognized does not exceed the amount of goodwill allocated to the reporting unit.	Goodwill carried on the Company's consolidated financial statements was $5.7 million at both June 30, 2019 and December 31, 2018. This asset is related to the Company’s acquisition of two branch offices in July 2000. The Company does not expect the adoption of ASU No. 2017-04 to have a material impact on the Company's consolidated financial statements and results of operations.

Accounting pronouncements not yet adopted by the Company (continued)
Standard/Effective Date	Description	Effect on Financial Statements or Other Significant Matters
ASU No. 2018-13, Fair Value Measurement (ASU Topic 820)-Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement January 1, 2020	The amendments in this ASU modify the disclosure requirements primarily related to level 3 fair value measurements of the fair value hierarchy.	The Company does not expect the adoption of ASU No. 2018-13 to have a material impact on the Company's consolidated financial statements and results of operations because this ASU primarily relates to disclosure requirements.
ASU No.2018-15, Intangible-Goodwill and Other- Internal-Use Software (ASU Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract January 1, 2020	The major provision in the amendments in this ASU require an entity to capitalize certain implementation costs incurred in a hosting arrangement that is a service contract in accordance with current GAAP for internal-use software and expense these costs over the term of the hosting arrangement. Additionally, these capitalized implementation costs are required to be reviewed for impairment in accordance with current GAAP for internal-use software. The amendments in this ASU should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption.	The Company does not expect the adoption of ASU No. 2018-15 to have a material impact on the Company's consolidated financial statements and results of operations.
ASU No. 2018-14, Compensation-Retirement Benefits-Defined Benefit Plans-General (ASU Subtopic 715-20) - Disclosure Framework- Changes to the Disclosure Requirements for Defined Benefit Plans January 1, 2021	The amendments in this ASU modify the disclosure requirements on defined benefit plans including requiring disclosures about significant gains and losses related to changes in the benefit obligation.	The adoption of ASU No. 2018-14 will not have a material impact on the Company's consolidated financial statements and results of operations because this ASU primarily relates to disclosure requirements and the balances of the benefit plans impacted by this ASU are immaterial to the Company.

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Stockholder's Equity (Policies)

6 Months Ended

Jun. 30, 2019

Equity [Abstract]

Comprehensive Income

Comprehensive income is defined as all changes to stockholders' equity except investments by and distributions to stockholders.  Net income is one component of comprehensive income, with other components referred to in the aggregate as other comprehensive income.  At June 30, 2019 and June 30, 2018, the Company's only other comprehensive income component is the net unrealized holding gains or losses on available-for-sale debt securities, net of deferred income taxes. Pursuant to GAAP, the Company initially excludes these unrealized holding gains and losses from net income; however, they are later reported as reclassifications out of accumulated other comprehensive income into net income when the debt securities are sold.

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Investment Securities (Tables)

6 Months Ended

Jun. 30, 2019

Investments, Debt and Equity Securities [Abstract]

Schedule of Debt Securities, Available-for-Sale Investments Reconciliation

The amortized cost and fair values of debt securities at the dates specified are summarized as follows:

	June 30, 2019
(Dollars in thousands)	Amortized cost		Unrealized gains		Unrealized losses		Fair Value
Federal agency obligations(1)	$	998	$	7	$	—	$	1,005
Residential federal agency MBS(1)	170,882		2,165		309		172,738
Commercial federal agency MBS(1)	113,136		3,875		—		117,011
Municipal securities	153,322		6,535		—		159,857
Corporate bonds	13,994		394		5		14,383
Certificate of deposits(2) ("CDs")	950		—		—		950
Total debt securities, at fair value	$	453,282	$	12,976	$	314	$	465,944

	December 31, 2018
(Dollars in thousands)	Amortized cost		Unrealized gains		Unrealized losses		Fair Value
Federal agency obligations(1)	$	7,994	$	—	$	19	$	7,975
Residential federal agency MBS(1)	174,701		633		2,608		172,726
Commercial federal agency MBS(1)	93,800		609		430		93,979
Municipal securities	141,747		1,122		826		142,043
Corporate bonds	13,967		24		185		13,806
Certificates of deposits(2)	950		—		6		944
Total debt securities, at fair value	$	433,159	$	2,388	$	4,074	$	431,473

__________________________________________

(1) These categories may include investments issued or guaranteed by government sponsored enterprises such as Fannie Mae ("FNMA"), Freddie Mac ("FHLMC"), Federal Farm Credit Bank ("FFCB"), or one of several Federal Home Loan Banks, as well as, investments guaranteed by Ginnie Mae ("GNMA"), a wholly-owned government entity. 

(2) CDs represent term deposits issued by banks that are subject to FDIC insurance and purchased on the open market.

Schedule of Unrealized Loss on Debt Securities, Available-for-Sale Investments

The following tables summarize debt securities with unrealized losses, due to the fair values having declined below the amortized costs of the individual investments, by the duration of their continuous unrealized loss positions at June 30, 2019 and December 31, 2018: 

	June 30, 2019
	Less than 12 months				12 months or longer				Total
(Dollars in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		# of holdings
Residential federal agency MBS	$	7,418	$	38	$	35,726	$	271	$	43,144	$	309	11
Corporate bonds	—		—		1,330		5		1,330		5		9
Total temporarily impaired debt securities	$	7,418	$	38	$	37,056	$	276	$	44,474	$	314	20

	December 31, 2018
	Less than 12 months				12 months or longer				Total
(Dollars in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		# of holdings
Federal agency obligations	$	997	$	1	$	6,978	$	18	$	7,975	$	19	3
Residential federal agency MBS	26,147		597		81,158		2,011		107,305		2,608		25
Commercial federal agency MBS	3,258		11		18,717		419		21,975		430		9
Municipal securities	15,036		108		41,265		718		56,301		826		83
Corporate bonds	5,277		36		5,653		149		10,930		185		63
CDs	—		—		944		6		944		6		4
Total temporarily impaired debt securities	$	50,715	$	753	$	154,715	$	3,321	$	205,430	$	4,074	187

Debt Securities, Available-for-Sale Investments Classified by Contractual Maturity Date

The contractual maturity distribution at June 30, 2019 of total debt securities was as follows:

(Dollars in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	4,248	$	4,259
Due after one, but within five years	67,469		69,232
Due after five, but within ten years	175,094		182,596
Due after ten years	206,471		209,857
Total debt securities	$	453,282	$	465,944

Schedule of Realized Gain (Loss) on Sales of Debt Securities, Available-for-Sale Investments

Sales of debt securities for the three and six months endedJune 30, 2019 and June 30, 2018 are summarized as follows:

	Three months ended June 30,				Six months ended June 30,
(Dollars in thousands)	2019		2018		2019			2018
Amortized cost of debt securities sold (1)	$	9,828	$	—	$	11,621		$	668
Gross realized gains on sales	147		—		149			3
Gross realized losses on sales	—		—		(3		)	(2		)
Total proceeds from sales of debt securities	$	9,975	$	—	$	11,767		$	669

_________________________________________

(1) Amortized cost of investments sold is determined on a specific identification basis and includes pending trades based on trade date, if applicable.

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Loans (Tables)

6 Months Ended

Jun. 30, 2019

Receivables [Abstract]

Schedule of Loans by Loan Classification

Major classifications of loans at the dates indicated were as follows:

(Dollars in thousands)	June 30, 2019			December 31, 2018
Commercial real estate	$	1,294,509		$	1,303,879
Commercial and industrial	514,402			514,253
Commercial construction	264,484			234,430
Total commercial loans	2,073,395			2,052,562
Residential mortgages	235,392			231,501
Home equity loans and lines	97,994			96,116
Consumer	10,208			10,241
Total retail loans	343,594			337,858
Gross loans	2,416,989			2,390,420
Deferred loan origination fees, net	(2,887		)	(2,914		)
Total loans	2,414,102			2,387,506
Allowance for loan losses	(34,351		)	(33,849		)
Net loans	$	2,379,751		$	2,353,657

Schedule of Loans Pledged as Collateral

Loans designated as qualified collateral and pledged to the FHLB for borrowing capacity for the dates indicated are summarized below:

(Dollars in thousands)	June 30, 2019		December 31, 2018
Commercial real estate	$	291,748	$	311,024
Residential mortgages	222,234		220,815
Home equity lines of credit	7,940		8,382
Total loans pledged to FHLB	$	521,922	$	540,221

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Allowance For Loan Loss (Tables)

6 Months Ended

Jun. 30, 2019

Receivables [Abstract]

Financing Receivables by Evaluation Method

The balances of loans as of June 30, 2019 by portfolio classification and evaluation method are summarized as follows: 

(Dollars in thousands)	Loans individually evaluated for impairment		Loans collectively evaluated for impairment		Gross Loans
Commercial real estate	$	16,906	$	1,277,603	$	1,294,509
Commercial and industrial	11,042		503,360		514,402
Commercial construction	1,723		262,761		264,484
Residential mortgages	934		234,458		235,392
Home equity loans and lines	432		97,562		97,994
Consumer	32		10,176		10,208
Total gross loans	$	31,069	$	2,385,920	$	2,416,989

The balances of loans as of December 31, 2018 by portfolio classification and evaluation method are summarized as follows:

(Dollars in thousands)	Loans individually evaluated for impairment		Loans collectively evaluated for impairment		Gross Loans
Commercial real estate	$	16,318	$	1,287,561	$	1,303,879
Commercial and industrial	12,053		502,200		514,253
Commercial construction	1,736		232,694		234,430
Residential mortgages	893		230,608		231,501
Home equity loans and lines	514		95,602		96,116
Consumer	16		10,225		10,241
Total gross loans	$	31,530	$	2,358,890	$	2,390,420

Financing Receivable Credit Quality Indicators

The following tables present the Company's credit risk profile for each portfolio classification by internally assigned adverse risk rating category as of the periods indicated:

	June 30, 2019
	Adversely Classified						Not Adversely
(Dollars in thousands)	Substandard		Doubtful		Loss		Classified		Gross Loans
Commercial real estate	$	17,152	$	—	$	—	$	1,277,357	$	1,294,509
Commercial and industrial	12,577		—		44		501,781		514,402
Commercial construction	2,240		—		—		262,244		264,484
Residential mortgages	1,849		—		—		233,543		235,392
Home equity loans and lines	478		—		—		97,516		97,994
Consumer	40		12		—		10,156		10,208
Total gross loans	$	34,336	$	12	$	44	$	2,382,597	$	2,416,989

	December 31, 2018
	Adversely Classified						Not Adversely
(Dollars in thousands)	Substandard		Doubtful		Loss		Classified		Gross Loans
Commercial real estate	$	17,714	$	240	$	—	$	1,285,925	$	1,303,879
Commercial and industrial	12,821		—		—		501,432		514,253
Commercial construction	2,262		—		—		232,168		234,430
Residential mortgages	1,820		—		—		229,681		231,501
Home equity loans and lines	561		—		—		95,555		96,116
Consumer	35		8		—		10,198		10,241
Total gross loans	$	35,213	$	248	$	—	$	2,354,959	$	2,390,420

Past Due Financing Receivables

The following tables present an age analysis of past due loans by portfolio classification as of the dates indicated:

	Balance at June 30, 2019
(Dollars in thousands)	30-59 Days Past Due		60-89 Days Past Due		Past Due 90 days or more		Total Past Due Loans		Current Loans		Gross Loans		Non-accrual Loans
Commercial real estate	$	4,030	$	393	$	3,449	$	7,872	$	1,286,637	$	1,294,509	$	6,602
Commercial and industrial	797		604		1,073		2,474		511,928		514,402		4,049
Commercial construction	4,731		460		—		5,191		259,293		264,484		123
Residential mortgages	1,617		312		—		1,929		233,463		235,392		745
Home equity loans and lines	77		177		—		254		97,740		97,994		432
Consumer	35		10		17		62		10,146		10,208		27
Total gross loans	$	11,287	$	1,956	$	4,539	$	17,782	$	2,399,207	$	2,416,989	$	11,978

	Balance at December 31, 2018
(Dollars in thousands)	30-59 Days Past Due		60-89 Days Past Due		Past Due 90 days or more		Total Past Due Loans		Current Loans		Gross Loans		Non-accrual Loans
Commercial real estate	$	7,596	$	21	$	3,821	$	11,438	$	1,292,441	$	1,303,879	$	6,894
Commercial and industrial	619		17		2,299		2,935		511,318		514,253		3,417
Commercial construction	4,319		—		—		4,319		230,111		234,430		176
Residential mortgages	114		—		377		491		231,010		231,501		763
Home equity loans and lines	14		168		209		391		95,725		96,116		514
Consumer	23		31		6		60		10,181		10,241		20
Total gross loans	$	12,685	$	237	$	6,712	$	19,634	$	2,370,786	$	2,390,420	$	11,784

Impaired Financing Receivables

The following tables set forth the recorded investment in impaired loans and the related specific allowance allocated by portfolio classification as of the dates indicated:

	Balance at June 30, 2019
(Dollars in thousands)	Unpaid contractual principal balance		Total recorded investment in impaired loans		Recorded investment with no allowance		Recorded investment with allowance		Related specific allowance
Commercial real estate	$	17,800	$	16,906	$	16,739	$	167	$	5
Commercial and industrial	11,575		11,042		7,403		3,639		2,307
Commercial construction	1,800		1,723		1,723		—		—
Residential mortgages	1,024		934		518		416		5
Home equity loans and lines	614		432		432		—		—
Consumer	32		32		—		32		32
Total	$	32,845	$	31,069	$	26,815	$	4,254	$	2,349

	Balance at December 31, 2018
(Dollars in thousands)	Unpaid contractual principal  balance		Total recorded investment in impaired loans		Recorded investment with no allowance		Recorded investment with allowance		Related specific allowance
Commercial real estate	$	17,140	$	16,318	$	15,948	$	370	$	55
Commercial and industrial	12,538		12,053		7,752		4,301		2,140
Commercial construction	1,804		1,736		1,736		—		—
Residential mortgages	970		893		473		420		13
Home equity loans and lines	685		514		514		—		—
Consumer	16		16		—		16		16
Total	$	33,153	$	31,530	$	26,423	$	5,107	$	2,224

The following table presents the average recorded investment in impaired loans by portfolio classification and the related interest recognized during the three months indicated:

	Three months ended June 30, 2019					Three months ended June 30, 2018
(Dollars in thousands)	Average recorded investment		Interest income recognized			Average recorded investment		Interest income recognized
Commercial real estate	$	16,425	$	122		$	13,506	$	95
Commercial and industrial	11,474		94			11,601		89
Commercial construction	1,738		27			1,676		23
Residential mortgages	939		17			644		1
Home equity loans and lines	436		—			499		—
Consumer	24		(1		)	66		—
Total	$	31,036	$	259		$	27,992	$	208

The following table presents the average recorded investment in impaired loans by portfolio classification and the related interest recognized during the six months indicated:

	Six months ended June 30, 2019					Six months ended June 30, 2018
(Dollars in thousands)	Average recorded investment		Interest income recognized			Average recorded investment		Interest income recognized
Commercial real estate	$	16,114	$	242		$	13,611	$	189
Commercial and industrial	11,696		209			11,124		166
Commercial construction	1,736		52			1,656		45
Residential mortgages	914		18			629		—
Home equity loans and lines	472		—			487		—
Consumer	21		(1		)	49		—
Total	$	30,953	$	520		$	27,556	$	400

Troubled Debt Restructurings on Financing Receivables

Payment defaults by portfolio classification during the six months ended June 30, 2019 and June 30, 2018, on loans modified as TDRs within the preceding twelve months are detailed below:

	Six months ended
	June 30, 2019			June 30, 2018
(Dollars in thousands)	Number of TDRs that defaulted	Post- modification outstanding recorded investment		Number of TDRs that defaulted	Post- modification outstanding recorded investment
Commercial real estate	—	$	—	—	$	—
Commercial and industrial	2	172		1	73
Commercial construction	—	—		—	—
Residential mortgages	—	—		—	—
Home equity loans and lines	—	—		1	12
Consumer	—	—		—	—
Total	2	$	172	2	$	85

The following table sets forth the post modification balances of TDRs listed by type of modification for TDRs that occurred during the periods indicated:

	Six months ended
	June 30, 2019			June 30, 2018
(Dollars in thousands)	Number of restructurings	Amount		Number of restructurings	Amount
Temporary payment reduction and payment re-amortization of remaining principal over extended term	7	$	89	5	$	222
Temporary interest only payment plan	2	395		2	148
Other payment concessions	3	1,759		1	12
Total	12	$	2,243	8	$	382
Amount of specific reserves included in the allowance for loan losses associated with TDRs listed above		$	89		$	73

Loans modified as TDRs during the three months ended June 30, 2019 and June 30, 2018 are detailed below:

	Three months ended
	June 30, 2019					June 30, 2018
(Dollars in thousands)	Number of restructurings	Pre-modification outstanding recorded investment		Post-modification outstanding recorded investment		Number of restructurings	Pre-modification outstanding recorded investment		Post-modification outstanding recorded investment
Commercial real estate	2	$	1,626	$	1,626	—	$	—	$	—
Commercial and industrial	2	212		216		2	20		17
Commercial construction	—	—		—		—	—		—
Residential mortgages	—	—		—		—	—		—
Home equity loans and lines	—	—		—		2	112		104
Consumer	1	6		6		—	—		—
Total	5	$	1,844	$	1,848	4	$	132	$	121

There were no payment defaults during the three months ended June 30, 2019. Payment defaults, during the three months ended June 30, 2018 on loans modified as TDRs within the preceding twelve months are detailed below:

	Three months ended
	June 30, 2018
(Dollars in thousands)	Number of TDRs that defaulted	Post- modification outstanding recorded investment
Commercial real estate	—	$	—
Commercial and industrial	1	73
Commercial construction	—	—
Residential mortgages	—	—
Home equity loans and lines	1	12
Consumer	—	—
Total	2	$	85

Loans modified as TDRs during the six months ended June 30, 2019 and June 30, 2018 by portfolio classification are detailed below:

	Six months ended
	June 30, 2019					June 30, 2018
(Dollars in thousands)	Number of restructurings	Pre-modification outstanding recorded investment		Post-modification outstanding recorded investment		Number of restructurings	Pre-modification outstanding recorded investment		Post-modification outstanding recorded investment
Commercial real estate	3	$	2,047	$	1,626	2	$	131	$	148
Commercial and industrial	7	406		299		4	162		130
Commercial construction	—	—		—		—	—		—
Residential mortgages	1	315		312		—	—		—
Home equity loans and lines	—	—		—		2	112		104
Consumer	1	6		6		—	—		—
Total	12	$	2,774	$	2,243	8	$	405	$	382

Allowance for Credit Losses on Financing Receivables

Changes in the allowance for loan losses by portfolio segment for the three months ended June 30, 2019 are presented below: 

(Dollars in thousands)	Cmml Real Estate		Cmml and Industrial		Cmml Constr		Resid. Mortgage		Home Equity			Consumer		Total
Beginning Balance at March 31, 2019	$	17,826	$	10,403	$	3,452	$	1,184	$	627		$	237	$	33,729
Provision	2		647		265		3		(1		)	39		955
Recoveries	—		140		—		—		3			8		151
Less: Charge offs	—		459		—		—		—			25		484
Ending Balance at June 30, 2019	$	17,828	$	10,731	$	3,717	$	1,187	$	629		$	259	$	34,351

Changes in the allowance for loan losses by portfolio classification for the six months endedJune 30, 2019 are presented below: 

(Dollars in thousands)	Cmml Real Estate			Cmml and Industrial		Cmml Constr		Resid. Mortgage		Home Equity			Consumer		Total
Beginning Balance at December 31, 2018	$	18,014		$	10,493	$	3,307	$	1,160	$	629		$	246	$	33,849
Provision	(186		)	241		410		27		(5		)	68		555
Recoveries	—			456		—		—		5			13		474
Less: Charge offs	—			459		—		—		—			68		527
Ending Balance at June 30, 2019	$	17,828		$	10,731	$	3,717	$	1,187	$	629		$	259	$	34,351
Ending allowance balance:
Allocated to loans individually evaluated for impairment	$	5		$	2,307	$	—	$	5	$	—		$	32	$	2,349
Allocated to loans collectively evaluated for impairment	$	17,823		$	8,424	$	3,717	$	1,182	$	629		$	227	$	32,002

Changes in the allowance for loan losses by portfolio segment for the three months ended June 30, 2018 are presented below:

(Dollars in thousands)	Cmml Real Estate		Cmml and Industrial			Cmml Constr		Resid. Mortgage		Home Equity		Consumer			Total
Beginning Balance at March 31, 2018	$	18,300	$	11,171		$	3,283	$	914	$	629	$	227		$	34,524
Provision	114		(109		)	261		25		16		(7		)	300
Recoveries	—		57			—		—		—		12			69
Less: Charge offs	—		76			—		—		—		20			96
Ending Balance at June 30, 2018	$	18,414	$	11,043		$	3,544	$	939	$	645	$	212		$	34,797

Changes in the allowance for loan losses by portfolio classification for the six months endedJune 30, 2018 are presented below: 

(Dollars in thousands)	Cmml Real Estate		Cmml and Industrial		Cmml Constr			Resid. Mortgage		Home Equity		Consumer		Total
Beginning Balance at December 31, 2017	$	17,545	$	9,669	$	3,947		$	904	$	608	$	242	$	32,915
Provision	869		1,326		(403		)	35		36		37		1,900
Recoveries	—		165		—			—		1		17		183
Less: Charge offs	—		117		—			—		—		84		201
Ending Balance at June 30, 2018	$	18,414	$	11,043	$	3,544		$	939	$	645	$	212	$	34,797
Ending allowance balance:
Allocated to loans individually evaluated for impairment	$	42	$	2,621	$	—		$	3	$	—	$	17	$	2,683
Allocated to loans collectively evaluated for impairment	$	18,372	$	8,422	$	3,544		$	936	$	645	$	195	$	32,114

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Leases (Tables)

6 Months Ended

Jun. 30, 2019

Leases [Abstract]

Operating lease liability maturity table as lessee

At June 30, 2019, the remaining undiscounted cash flows by year of these lease liabilities were as follows:

(Dollars in thousands)	Operating Leases
2019 (six remaining months)	$	629
2020	1,242
2021	1,242
2022	1,245
2023	1,252
Thereafter	24,599
Total lease payments	$	30,209
Less: Imputed interest	11,827
Total lease liability	$	18,382

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Deposits (Tables)

6 Months Ended

Jun. 30, 2019

Deposits [Abstract]

Schedule of Deposit Liabilities

Deposits are summarized as follows:

(Dollars in thousands)	June 30, 2019		December 31, 2018
Non-interest checking	$	822,455	$	765,029
Interest-bearing checking	496,828		403,497
Savings	209,477		193,214
Money market	1,006,526		862,028
CDs $250,000 or less	222,879		215,200
CDs greater than $250,000	71,983		69,031
Total customer deposits	2,830,148		2,507,999
Brokered deposits (1)	—		56,783
Total deposits	$	2,830,148	$	2,564,782

___________________________________

(1) Brokered CDs which are $250,000 and under.

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Derivatives and Hedging Activities (Tables)

6 Months Ended

Jun. 30, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivatives, Fair Value and Classification

The table below presents the fair value and classification of the Company's derivative financial instruments for the periods presented:

	As of June 30, 2019				As of December 31, 2018
(Dollars in thousands)	Asset Derivatives		Liability Derivatives		Asset Derivatives		Liability Derivatives
Interest-rate contracts - pay floating, receive fixed	$	559	$	207	$	45	$	723
Interest-rate contracts - pay fixed, receive floating	—		352		678		—
Total interest-rate swaps	$	559	$	559	$	723	$	723

Schedule of Derivatives - Offsetting Assets and Liabilities

The table below presents the Company's liability derivative position and the potential effect of the netting arrangement on its financial position, as of the period presented. As noted above, interest-rate swaps with customers are not subject to master netting agreements and therefore are not included in the table below.

	As of June 30, 2019
(Dollars in thousands)	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Statement of Financial Position		Net Amounts of Liabilities Presented in the Statement of Financial Position
Liabilities Derivatives
Interest-rate contracts - pay fixed, receive floating	$	559	$	207	$	352

The table below presents the Company's asset derivative position and the potential effect of the netting arrangement on its financial position, as of the period presented. As noted above, interest-rate swaps with customers are not subject to master netting agreements and therefore are not included in the table below.

	As of December 31, 2018
(Dollars in thousands)	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Statement of Financial Position		Net Amounts of Assets Presented in the Statement of Financial Position
Asset Derivatives
Interest-rate contracts - pay fixed, receive floating	$	723	$	45	$	678

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Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The table below provides a summary of the options granted, including the weighted average fair value, the fair value as a percentage of the market value of the stock at the date of grant and the average assumptions used in the model for the periods indicated:

	Six Months Ended June 30,
	2019			2018
Options granted	23,218			14,755
Term in years	10			10
Weighted average assumptions used in the fair value model:
Expected volatility	33		%	37		%
Expected dividend yield	2.75		%	2.10		%
Expected life in years	6.5			6.5
Risk-free interest rate	2.58		%	2.86		%
Weighted average market price on date of grants	$	29.84		$	34.33
Per share weighted average fair value	$	8.70		$	11.98
Fair value as a percentage of market value at grant date	29		%	35		%

Schedule of Restricted Stock Awards Granted

The table below provides a summary of restricted stock awards granted during the periods indicated:

	Six Months Ended June 30,
Restricted Stock Awards (number of underlying shares)	2019		2018
Two-year vesting	8,368		7,280
Four-year vesting	22,403		16,666
Performance-based vesting	24,427		20,559
Total restricted stock awards granted	55,198		44,505
Weighted average grant date fair value	$	29.84	$	34.33

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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Schedule of Weighted Average Number of Shares

The table below presents the increase in average shares outstanding, using the treasury stock method, for the diluted earnings per share calculation for the periods indicated:

	Three months ended June 30,		Six months ended June 30,
	2019	2018	2019	2018
Basic weighted average common shares outstanding	11,798,942	11,687,182	11,764,901	11,658,046
Dilutive shares	35,565	77,229	43,932	75,345
Diluted weighted average common shares outstanding	11,834,507	11,764,411	11,808,833	11,733,391

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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2019

Fair Value Disclosures [Abstract]

Fair Value, Assets Measured on Recurring and Nonrecurring Basis

The following tables summarize significant assets and liabilities carried at fair value and placement in the fair value hierarchy at the dates specified:

	June 30, 2019
			Fair Value Measurements using:
(Dollars in thousands)	Fair Value		(Level 1)		(Level 2)		(Level 3)
Assets measured on a recurring basis:
Debt securities	$	465,944	$	—	$	465,944	$	—
Equity securities	2,428		2,428		—		—
FHLB stock	1,576		—		—		1,576
Interest-rate swaps	559		—		559		—
Assets measured on a non-recurring basis:
Impaired loans (collateral dependent)	1,875		—		—		1,875
Other real estate owned	255		—		—		255
Liabilities measured on a recurring basis:
Interest-rate swaps	$	559	$	—	$	559	$	—

	December 31, 2018
			Fair Value Measurements using:
(Dollars in thousands)	Fair Value		(Level 1)		(Level 2)		(Level 3)
Assets measured on a recurring basis:
Debt securities	$	431,473	$	—	$	431,473	$	—
Equity securities	1,448		1,448		—		—
FHLB stock	5,357		—		—		5,357
Interest-rate swaps	723		—		723		—
Assets measured on a non-recurring basis:
Impaired loans (collateral dependent)	2,574		—		—		2,574
Liabilities measured on a recurring basis:
Interest-rate swaps	$	723	$	—	$	723	$	—

Quantitative Information About Significant Unobservable Inputs for Fair Value Measurements

The following table presents additional quantitative information about assets measured at fair value on a recurring and non-recurring basis for which the Company utilized Level 3 inputs (significant unobservable inputs for situations in which there is little, if any, market activity for the asset or liability) to determine fair value as of June 30, 2019 and December 31, 2018:

	Fair Value
(Dollars in thousands)	June 30, 2019		December 31, 2018		Valuation Technique	Unobservable Input	Unobservable Input Value or Range
Assets measured on a recurring basis:
FHLB stock	$	1,576	$	5,357	Stated Par Value	N/A	N/A
Assets measured on a non-recurring basis:
Impaired loans(collateral dependent)	$	1,875	$	2,574	Appraisal of collateral	Appraisal adjustments (1)	5% - 50%
Other real estate owned	$	255	$	—	Appraisal of collateral	Appraisal adjustments (1)	0% - 30%

__________________________________________

(1)    Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses.

Fair Value, by Balance Sheet Grouping

The carrying values, estimated fair values and placement in the fair value hierarchy of the Company's consolidated financial instruments for which fair value is only disclosed but not recognized on the consolidated balance sheet at the dates indicated are summarized as follows:

	June 30, 2019
					Fair value measurement
(Dollars in thousands)	Carrying Amount		Fair Value		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Financial assets:
Loans held for sale	$	1,376	$	1,387	$	—	$	1,387	$	—
Loans, net	2,379,751		2,384,279		—		—		2,384,279
Financial liabilities:
CDs (including brokered)	294,862		295,456		—		295,456		—
Borrowed funds	484		339		—		339		—
Subordinated debt	14,866		15,187		—		—		15,187

	December 31, 2018
					Fair value measurement
(Dollars in thousands)	Carrying Amount		Fair Value		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Financial assets:
Loans held for sale	$	701	$	710	$	—	$	710	$	—
Loans, net	2,353,657		2,331,076		—		—		2,331,076
Financial liabilities:
CDs (including brokered)	341,014		339,308		—		339,308		—
Borrowed funds	100,492		100,312		—		100,312		—
Subordinated debt	14,860		14,300		—		—		14,300

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Supplemental Cash Flow (Tables)

6 Months Ended

Jun. 30, 2019

Supplemental Cash Flow [Abstract]

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

The supplemental cash flow information for the six months ended June 30, 2019 and June 30, 2018 is as follows:

	Six months ended June 30, 2019
(Dollars in thousands)	2019		2018
Supplemental financial data:
Cash paid for: interest	$	10,753	$	5,559
Cash paid for: income taxes	5,671		4,663
Cash paid for: lease liability	576		—
Supplemental schedule of non-cash activity:
Net purchases of investment securities not yet settled	2,950		351
Transfer from loans to other real estate owned	255		—
ROU lease assets: operating leases(1)	19,635		—

_________________________________________

(1) This represents the ROU lease asset that was recorded upon adoption of ASC 842 and new leases added in the current year and is primarily offset by a corresponding lease liability.

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Summary of Significant Accounting Policies (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019 USD ($) branches segment	Dec. 31, 2018 USD ($)	Jul. 31, 2000 branches
Accounting Policies [Abstract]
Number of branches | branches	24
Reportable operating segments | segment	1
Federal Reserve Bank Average Daily Reserve Requirement included in Cash and Due from Banks | $	$ 8,800
Goodwill | $	$ 5,656	$ 5,656
Number of offices related to the goodwill in acquisition | branches			2

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Investment Securities Available-for-Sale (Details) - USD ($) $ in Thousands		Jun. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost		$ 453,282	$ 433,159
Debt Securities,Gross Unrealized Gains		12,976	2,388
Debt Securities, Gross Unrealized Loss		314	4,074
Debt securities at fair value		465,944	431,473
Federal agency obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	[1]	998	7,994
Debt Securities,Gross Unrealized Gains	[1]	7	0
Debt Securities, Gross Unrealized Loss	[1]	0	19
Debt securities at fair value	[1]	1,005	7,975
Residential federal agency MBS
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	[1]	170,882	174,701
Debt Securities,Gross Unrealized Gains	[1]	2,165	633
Debt Securities, Gross Unrealized Loss	[1]	309	2,608
Debt securities at fair value	[1]	172,738	172,726
Commercial federal agency MBS
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	[1]	113,136	93,800
Debt Securities,Gross Unrealized Gains	[1]	3,875	609
Debt Securities, Gross Unrealized Loss	[1]	0	430
Debt securities at fair value	[1]	117,011	93,979
Collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Debt securities at fair value		266,100	242,800
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost		153,322	141,747
Debt Securities,Gross Unrealized Gains		6,535	1,122
Debt Securities, Gross Unrealized Loss		0	826
Debt securities at fair value		159,857	142,043
Tax-exempt municipal securities
Debt Securities, Available-for-sale [Line Items]
Debt securities at fair value		100,100	107,300
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost		13,994	13,967
Debt Securities,Gross Unrealized Gains		394	24
Debt Securities, Gross Unrealized Loss		5	185
Debt securities at fair value		14,383	13,806
Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	[2]	950	950
Debt Securities,Gross Unrealized Gains	[2]	0	0
Debt Securities, Gross Unrealized Loss	[2]	0	6
Debt securities at fair value	[2]	950	$ 944
Collateral Pledged
Debt Securities, Available-for-sale [Line Items]
Debt securities, pledged as collateral		$ 461,400

[1] These categories may include investments issued or guaranteed by government sponsored enterprises such as Fannie Mae ("FNMA"), Freddie Mac ("FHLMC"), Federal Farm Credit Bank ("FFCB"), or one of several Federal Home Loan Banks, as well as, investments guaranteed by Ginnie Mae ("GNMA"), a wholly-owned government entity.

[2] CDs represent term deposits issued by banks that are subject to FDIC insurance and purchased on the open market.

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Investment Securities Available-for-Sale - Continuous Loss Position (Details) $ in Thousands	Jun. 30, 2019 USD ($) investments	Dec. 31, 2018 USD ($) investments
Debt Securities, Available-for-sale [Line Items]
Debt Securities, temporarily impaired, Less than 12 Months, fair value	$ 7,418	$ 50,715
Debt Securities, temporarily impaired,less than 12 months, unrealized loss	38	753
Debt securities,temporarily impaired, 12 months or longer, fair value	37,056	154,715
Debt securities, temporarily impaired, 12 months or longer, unrealized loss	276	3,321
Debt securities, temporarily impaired, fair value	44,474	205,430
Debt securities,temporarily impaired, unrealized loss	$ 314	$ 4,074
Number of debt securities in loss positions | investments	20	187
Federal agency obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, temporarily impaired, Less than 12 Months, fair value		$ 997
Debt Securities, temporarily impaired,less than 12 months, unrealized loss		1
Debt securities,temporarily impaired, 12 months or longer, fair value		6,978
Debt securities, temporarily impaired, 12 months or longer, unrealized loss		18
Debt securities, temporarily impaired, fair value		7,975
Debt securities,temporarily impaired, unrealized loss		$ 19
Number of debt securities in loss positions | investments		3
Residential federal agency MBS
Debt Securities, Available-for-sale [Line Items]
Debt Securities, temporarily impaired, Less than 12 Months, fair value	$ 7,418	$ 26,147
Debt Securities, temporarily impaired,less than 12 months, unrealized loss	38	597
Debt securities,temporarily impaired, 12 months or longer, fair value	35,726	81,158
Debt securities, temporarily impaired, 12 months or longer, unrealized loss	271	2,011
Debt securities, temporarily impaired, fair value	43,144	107,305
Debt securities,temporarily impaired, unrealized loss	$ 309	$ 2,608
Number of debt securities in loss positions | investments	11	25
Commercial federal agency MBS
Debt Securities, Available-for-sale [Line Items]
Debt Securities, temporarily impaired, Less than 12 Months, fair value		$ 3,258
Debt Securities, temporarily impaired,less than 12 months, unrealized loss		11
Debt securities,temporarily impaired, 12 months or longer, fair value		18,717
Debt securities, temporarily impaired, 12 months or longer, unrealized loss		419
Debt securities, temporarily impaired, fair value		21,975
Debt securities,temporarily impaired, unrealized loss		$ 430
Number of debt securities in loss positions | investments		9
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, temporarily impaired, Less than 12 Months, fair value		$ 15,036
Debt Securities, temporarily impaired,less than 12 months, unrealized loss		108
Debt securities,temporarily impaired, 12 months or longer, fair value		41,265
Debt securities, temporarily impaired, 12 months or longer, unrealized loss		718
Debt securities, temporarily impaired, fair value		56,301
Debt securities,temporarily impaired, unrealized loss		$ 826
Number of debt securities in loss positions | investments		83
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Debt Securities, temporarily impaired, Less than 12 Months, fair value	$ 0	$ 5,277
Debt Securities, temporarily impaired,less than 12 months, unrealized loss	0	36
Debt securities,temporarily impaired, 12 months or longer, fair value	1,330	5,653
Debt securities, temporarily impaired, 12 months or longer, unrealized loss	5	149
Debt securities, temporarily impaired, fair value	1,330	10,930
Debt securities,temporarily impaired, unrealized loss	$ 5	$ 185
Number of debt securities in loss positions | investments	9	63
Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Debt Securities, temporarily impaired, Less than 12 Months, fair value		$ 0
Debt Securities, temporarily impaired,less than 12 months, unrealized loss		0
Debt securities,temporarily impaired, 12 months or longer, fair value		944
Debt securities, temporarily impaired, 12 months or longer, unrealized loss		6
Debt securities, temporarily impaired, fair value		944
Debt securities,temporarily impaired, unrealized loss		$ 6
Number of debt securities in loss positions | investments		4

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Investment Securities Available-for-Sale -Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Amortized Cost, Within One Year	$ 4,248
Fair Value, Within One Year	4,259
Amortized Cost Basis, After One, But Within Five Years	67,469
Fair Value, After One, But Within Five Years	69,232
Amortized Cost, After Five, But Within Ten Years	175,094
Fair Value, After Five but Within Ten Years	182,596
Amortized Cost Basis, After Ten Years	206,471
Fair Value, After Ten Years	209,857
Debt Securities, Available-for-sale, Amortized Cost	453,282	$ 433,159
Debt Securities at fair value	465,944	$ 431,473
Callable debt securities, fair value	$ 86,100

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Investment Securities Available-for-Sale -Sales (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Debt Securities, Available-for-sale, Realized Gain		$ 147	$ 0	$ 149	$ 3
Proceeds from sale of debt securities, including pending trades		9,975	0	11,767	669
Debt Securities, Available-for-sale, Realized Loss		0	0	(3)	(2)
Amortized cost of debt securities sold, including pending trades	[1]	$ 9,828	$ 0	$ 11,621	$ 668

[1] Amortized cost of investments sold is determined on a specific identification basis and includes pending trades based on trade date, if applicable.

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Investment Securities Equity Securities (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Marketable Securities [Line Items]
Equity securities	$ 2,428,000		$ 2,428,000		$ 1,448,000
Marketable Securities, Amortized Cost Basis, Investments Sold, Including Pending Trades	0	$ 0	0	$ 0
Net fair value gain (loss) on equity securities	$ 77,000		$ 263,000	$ (2,000)

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Loans - Balance by Class of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Schedule of Loans by Loan Classification [Line Items]
Gross loans	$ 2,416,989		$ 2,390,420
Deferred loan origination fees, net	(2,887)		(2,914)
Total loans	2,414,102		2,387,506
Allowance for loan losses	(34,351)	$ (33,729)	(33,849)	$ (34,797)	$ (34,524)	$ (32,915)
Net Loans	2,379,751		2,353,657
Commercial
Schedule of Loans by Loan Classification [Line Items]
Gross loans	2,073,395		2,052,562
Commercial real estate
Schedule of Loans by Loan Classification [Line Items]
Gross loans	1,294,509		1,303,879
Allowance for loan losses	(17,828)	(17,826)	(18,014)	(18,414)	(18,300)	(17,545)
Commercial and industrial
Schedule of Loans by Loan Classification [Line Items]
Gross loans	514,402		514,253
Allowance for loan losses	(10,731)	(10,403)	(10,493)	(11,043)	(11,171)	(9,669)
Commercial construction
Schedule of Loans by Loan Classification [Line Items]
Gross loans	264,484		234,430
Allowance for loan losses	(3,717)	(3,452)	(3,307)	(3,544)	(3,283)	(3,947)
Retail
Schedule of Loans by Loan Classification [Line Items]
Gross loans	343,594		337,858
Residential mortgages
Schedule of Loans by Loan Classification [Line Items]
Gross loans	235,392		231,501
Allowance for loan losses	(1,187)	(1,184)	(1,160)	(939)	(914)	(904)
Home equity loans and lines
Schedule of Loans by Loan Classification [Line Items]
Gross loans	97,994		96,116
Allowance for loan losses	(629)	(627)	(629)	(645)	(629)	(608)
Consumer
Schedule of Loans by Loan Classification [Line Items]
Gross loans	10,208		10,241
Allowance for loan losses	$ (259)	$ (237)	$ (246)	$ (212)	$ (227)	$ (242)

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Loans - Loan Categories Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Commercial
Schedule of Loans by Loan Classification [Line Items]
Participation loans amount	$ 69.0	$ 63.5
Participations loans sold that are still serviced amount	70.0	72.1
Residential mortgages
Schedule of Loans by Loan Classification [Line Items]
Amount of loans serviced for others	$ 16.7	$ 17.2

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Loans - Loans Serving as Collateral (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Financial Instruments Owned and Pledged as Collateral [Line Items]
Loans pledged to the FHLB for borrowing capacity	$ 521,922	$ 540,221
Commercial real estate
Financial Instruments Owned and Pledged as Collateral [Line Items]
Loans pledged to the FHLB for borrowing capacity	291,748	311,024
Residential mortgages
Financial Instruments Owned and Pledged as Collateral [Line Items]
Loans pledged to the FHLB for borrowing capacity	222,234	220,815
Home equity lines of credit
Financial Instruments Owned and Pledged as Collateral [Line Items]
Loans pledged to the FHLB for borrowing capacity	$ 7,940	$ 8,382

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Allowance For Loan Loss - Evaluation Method (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Schedule of Financing Receivable by Evaluation Method [Line Items]
Loans individually evaluated for impairment	$ 31,069	$ 31,530
Loans collectively evaluated for impairment	2,385,920	2,358,890
Gross loans	2,416,989	2,390,420
Commercial real estate
Schedule of Financing Receivable by Evaluation Method [Line Items]
Loans individually evaluated for impairment	16,906	16,318
Loans collectively evaluated for impairment	1,277,603	1,287,561
Gross loans	1,294,509	1,303,879
Commercial and industrial
Schedule of Financing Receivable by Evaluation Method [Line Items]
Loans individually evaluated for impairment	11,042	12,053
Loans collectively evaluated for impairment	503,360	502,200
Gross loans	514,402	514,253
Commercial construction
Schedule of Financing Receivable by Evaluation Method [Line Items]
Loans individually evaluated for impairment	1,723	1,736
Loans collectively evaluated for impairment	262,761	232,694
Gross loans	264,484	234,430
Residential mortgages
Schedule of Financing Receivable by Evaluation Method [Line Items]
Loans individually evaluated for impairment	934	893
Loans collectively evaluated for impairment	234,458	230,608
Gross loans	235,392	231,501
Home equity loans and lines
Schedule of Financing Receivable by Evaluation Method [Line Items]
Loans individually evaluated for impairment	432	514
Loans collectively evaluated for impairment	97,562	95,602
Gross loans	97,994	96,116
Consumer
Schedule of Financing Receivable by Evaluation Method [Line Items]
Loans individually evaluated for impairment	32	16
Loans collectively evaluated for impairment	10,176	10,225
Gross loans	$ 10,208	$ 10,241

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Allowance For Loan Loss - Adversely Classified Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Gross loans	$ 2,416,989	$ 2,390,420
Adversely classified loans to total loans	1.42%	1.49%
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Gross loans	$ 1,294,509	$ 1,303,879
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Gross loans	514,402	514,253
Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Gross loans	264,484	234,430
Residential mortgages
Financing Receivable, Recorded Investment [Line Items]
Gross loans	235,392	231,501
Home equity loans and lines
Financing Receivable, Recorded Investment [Line Items]
Gross loans	97,994	96,116
Consumer
Financing Receivable, Recorded Investment [Line Items]
Gross loans	10,208	10,241
Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	34,336	35,213
Substandard | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Gross loans	17,152	17,714
Substandard | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Gross loans	12,577	12,821
Substandard | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Gross loans	2,240	2,262
Substandard | Residential mortgages
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,849	1,820
Substandard | Home equity loans and lines
Financing Receivable, Recorded Investment [Line Items]
Gross loans	478	561
Substandard | Consumer
Financing Receivable, Recorded Investment [Line Items]
Gross loans	40	35
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	12	248
Doubtful | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	240
Doubtful | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Doubtful | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Doubtful | Residential mortgages
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Doubtful | Home equity loans and lines
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Doubtful | Consumer
Financing Receivable, Recorded Investment [Line Items]
Gross loans	12	8
Loss
Financing Receivable, Recorded Investment [Line Items]
Gross loans	44	0
Loss | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Loss | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Gross loans	44	0
Loss | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Loss | Residential mortgages
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Loss | Home equity loans and lines
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Loss | Consumer
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Not Adversely Classified
Financing Receivable, Recorded Investment [Line Items]
Gross loans	2,382,597	2,354,959
Not Adversely Classified | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,277,357	1,285,925
Not Adversely Classified | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Gross loans	501,781	501,432
Not Adversely Classified | Commercial construction
Financing Receivable, Recorded Investment [Line Items]
Gross loans	262,244	232,168
Not Adversely Classified | Residential mortgages
Financing Receivable, Recorded Investment [Line Items]
Gross loans	233,543	229,681
Not Adversely Classified | Home equity loans and lines
Financing Receivable, Recorded Investment [Line Items]
Gross loans	97,516	95,555
Not Adversely Classified | Consumer
Financing Receivable, Recorded Investment [Line Items]
Gross loans	$ 10,156	$ 10,198

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Allowance For Loan Loss - Past Due and Non-Accrual Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	$ 2,416,989	$ 2,390,420
Total Past Due Loans	17,782	19,634
Current Loans	2,399,207	2,370,786
Non-accrual loans	$ 11,978	$ 11,784
The ratio of non-accrual loans to total loans	0.50%	0.49%
Commercial real estate
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	$ 1,294,509	$ 1,303,879
Total Past Due Loans	7,872	11,438
Current Loans	1,286,637	1,292,441
Non-accrual loans	6,602	6,894
Commercial and industrial
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	514,402	514,253
Total Past Due Loans	2,474	2,935
Current Loans	511,928	511,318
Non-accrual loans	4,049	3,417
Commercial construction
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	264,484	234,430
Total Past Due Loans	5,191	4,319
Current Loans	259,293	230,111
Non-accrual loans	123	176
Residential mortgages
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	235,392	231,501
Total Past Due Loans	1,929	491
Current Loans	233,463	231,010
Non-accrual loans	745	763
Home equity loans and lines
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	97,994	96,116
Total Past Due Loans	254	391
Current Loans	97,740	95,725
Non-accrual loans	432	514
Consumer
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	10,208	10,241
Total Past Due Loans	62	60
Current Loans	10,146	10,181
Non-accrual loans	27	20
Loans 30-59 Days Past Due
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	11,287	12,685
Loans 30-59 Days Past Due | Commercial real estate
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	4,030	7,596
Loans 30-59 Days Past Due | Commercial and industrial
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	797	619
Loans 30-59 Days Past Due | Commercial construction
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	4,731	4,319
Loans 30-59 Days Past Due | Residential mortgages
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	1,617	114
Loans 30-59 Days Past Due | Home equity loans and lines
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	77	14
Loans 30-59 Days Past Due | Consumer
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	35	23
Loans 60-89 Days Past Due
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	1,956	237
Loans 60-89 Days Past Due | Commercial real estate
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	393	21
Loans 60-89 Days Past Due | Commercial and industrial
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	604	17
Loans 60-89 Days Past Due | Commercial construction
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	460	0
Loans 60-89 Days Past Due | Residential mortgages
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	312	0
Loans 60-89 Days Past Due | Home equity loans and lines
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	177	168
Loans 60-89 Days Past Due | Consumer
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	10	31
Loans equal to or greater than 90 days past due
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	4,539	6,712
Loans equal to or greater than 90 days past due | Commercial real estate
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	3,449	3,821
Loans equal to or greater than 90 days past due | Commercial and industrial
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	1,073	2,299
Loans equal to or greater than 90 days past due | Commercial construction
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	0	0
Loans equal to or greater than 90 days past due | Residential mortgages
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	0	377
Loans equal to or greater than 90 days past due | Home equity loans and lines
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	0	209
Loans equal to or greater than 90 days past due | Consumer
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	17	6
Not Adversely Classified
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	2,382,597	2,354,959
Non-accrual loans not adversely classified	33	81
Not Adversely Classified | Commercial real estate
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	1,277,357	1,285,925
Not Adversely Classified | Commercial and industrial
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	501,781	501,432
Not Adversely Classified | Commercial construction
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	262,244	232,168
Not Adversely Classified | Residential mortgages
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	233,543	229,681
Not Adversely Classified | Home equity loans and lines
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	97,516	95,555
Not Adversely Classified | Consumer
Schedule of Aging of Financing Receivables [Line Items]
Gross loans	$ 10,156	$ 10,198

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Allowance For Loan Loss - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Total recorded investment in impaired loans	$ 31,069		$ 31,069		$ 31,530
Total accruing impaired loans	19,100		19,100		19,700
Impaired non-accrual loans	12,000		12,000		11,800
Unpaid contractual principal balance	32,845		32,845		33,153
Recorded investment with no allowance	26,815		26,815		26,423
Recorded investment with allowance	4,254		4,254		5,107
Related allowance	2,349		2,349		2,224
Average recorded investment	31,036	$ 27,992	30,953	$ 27,556
Interest income recognized	259	208	520	400
Commercial real estate
Financing Receivable, Impaired [Line Items]
Total recorded investment in impaired loans	16,906		16,906		16,318
Unpaid contractual principal balance	17,800		17,800		17,140
Recorded investment with no allowance	16,739		16,739		15,948
Recorded investment with allowance	167		167		370
Related allowance	5		5		55
Average recorded investment	16,425	13,506	16,114	13,611
Interest income recognized	122	95	242	189
Commercial and industrial
Financing Receivable, Impaired [Line Items]
Total recorded investment in impaired loans	11,042		11,042		12,053
Unpaid contractual principal balance	11,575		11,575		12,538
Recorded investment with no allowance	7,403		7,403		7,752
Recorded investment with allowance	3,639		3,639		4,301
Related allowance	2,307		2,307		2,140
Average recorded investment	11,474	11,601	11,696	11,124
Interest income recognized	94	89	209	166
Commercial construction
Financing Receivable, Impaired [Line Items]
Total recorded investment in impaired loans	1,723		1,723		1,736
Unpaid contractual principal balance	1,800		1,800		1,804
Recorded investment with no allowance	1,723		1,723		1,736
Recorded investment with allowance	0		0		0
Related allowance	0		0		0
Average recorded investment	1,738	1,676	1,736	1,656
Interest income recognized	27	23	52	45
Residential mortgages
Financing Receivable, Impaired [Line Items]
Total recorded investment in impaired loans	934		934		893
Unpaid contractual principal balance	1,024		1,024		970
Recorded investment with no allowance	518		518		473
Recorded investment with allowance	416		416		420
Related allowance	5		5		13
Average recorded investment	939	644	914	629
Interest income recognized	17	1	18	0
Home equity loans and lines
Financing Receivable, Impaired [Line Items]
Total recorded investment in impaired loans	432		432		514
Unpaid contractual principal balance	614		614		685
Recorded investment with no allowance	432		432		514
Recorded investment with allowance	0		0		0
Related allowance	0		0		0
Average recorded investment	436	499	472	487
Interest income recognized	0	0	0	0
Consumer
Financing Receivable, Impaired [Line Items]
Total recorded investment in impaired loans	32		32		16
Unpaid contractual principal balance	32		32		16
Recorded investment with no allowance	0		0		0
Recorded investment with allowance	32		32		16
Related allowance	32		32		$ 16
Average recorded investment	24	66	21	49
Interest income recognized	$ (1)	$ 0	$ (1)	$ 0

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Allowance For Loan Loss - Troubled Debt Restructures (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($) restructuring	Jun. 30, 2018 USD ($) restructuring	Jun. 30, 2019 USD ($) restructuring	Jun. 30, 2018 USD ($) restructuring	Dec. 31, 2018 USD ($)
Financing Receivable, Modifications [Line Items]
Total Troubled Debt Restructure (TDR) loans	$ 24,600,000		$ 24,600,000		$ 23,100,000
TDR loans on accrual status	19,100,000		19,100,000		19,400,000
TDR loans included in non-performing loans	$ 5,500,000		$ 5,500,000		$ 3,700,000
Number of restructurings | restructuring	5	4	12	8
Post-modification recorded investment	$ 1,848,000	$ 121,000	$ 2,243,000	$ 382,000
Specific reserves allocated to TDRs	89,000	73,000	89,000	73,000
Pre-modification outstanding recorded investment	$ 1,844,000	$ 132,000	2,774,000	$ 405,000
Charge-offs associated with new TDRs			$ 0
Number of TDRs that defaulted | restructuring	0	2	2	2
Post-modification outstanding recorded investment, TDRs that defaulted		$ 85,000	$ 172,000	$ 85,000
Commercial real estate
Financing Receivable, Modifications [Line Items]
Number of restructurings | restructuring	2	0	3	2
Post-modification recorded investment	$ 1,626,000	$ 0	$ 1,626,000	$ 148,000
Pre-modification outstanding recorded investment	$ 1,626,000	$ 0	$ 2,047,000	$ 131,000
Number of TDRs that defaulted | restructuring		0	0	0
Post-modification outstanding recorded investment, TDRs that defaulted		$ 0	$ 0	$ 0
Commercial and industrial
Financing Receivable, Modifications [Line Items]
Number of restructurings | restructuring	2	2	7	4
Post-modification recorded investment	$ 216,000	$ 17,000	$ 299,000	$ 130,000
Pre-modification outstanding recorded investment	$ 212,000	$ 20,000	$ 406,000	$ 162,000
Number of TDRs that defaulted | restructuring		1	2	1
Post-modification outstanding recorded investment, TDRs that defaulted		$ 73,000	$ 172,000	$ 73,000
Commercial construction
Financing Receivable, Modifications [Line Items]
Number of restructurings | restructuring	0	0	0	0
Post-modification recorded investment	$ 0	$ 0	$ 0	$ 0
Pre-modification outstanding recorded investment	$ 0	$ 0	$ 0	$ 0
Number of TDRs that defaulted | restructuring		0	0	0
Post-modification outstanding recorded investment, TDRs that defaulted		$ 0	$ 0	$ 0
Residential mortgages
Financing Receivable, Modifications [Line Items]
Number of restructurings | restructuring	0	0	1	0
Post-modification recorded investment	$ 0	$ 0	$ 312,000	$ 0
Pre-modification outstanding recorded investment	$ 0	$ 0	$ 315,000	$ 0
Number of TDRs that defaulted | restructuring		0	0	0
Post-modification outstanding recorded investment, TDRs that defaulted		$ 0	$ 0	$ 0
Home equity loans and lines
Financing Receivable, Modifications [Line Items]
Number of restructurings | restructuring	0	2	0	2
Post-modification recorded investment	$ 0	$ 104,000	$ 0	$ 104,000
Pre-modification outstanding recorded investment	$ 0	$ 112,000	$ 0	$ 112,000
Number of TDRs that defaulted | restructuring		1	0	1
Post-modification outstanding recorded investment, TDRs that defaulted		$ 12,000	$ 0	$ 12,000
Consumer
Financing Receivable, Modifications [Line Items]
Number of restructurings | restructuring	1	0	1	0
Post-modification recorded investment	$ 6,000	$ 0	$ 6,000	$ 0
Pre-modification outstanding recorded investment	$ 6,000	$ 0	$ 6,000	$ 0
Number of TDRs that defaulted | restructuring		0	0	0
Post-modification outstanding recorded investment, TDRs that defaulted		$ 0	$ 0	$ 0
Temporary payment reduction and payment re-amortization of remaining principal over extended term
Financing Receivable, Modifications [Line Items]
Number of restructurings | restructuring			7	5
Post-modification recorded investment			$ 89,000	$ 222,000
Temporary interest only payment plan
Financing Receivable, Modifications [Line Items]
Number of restructurings | restructuring			2	2
Post-modification recorded investment			$ 395,000	$ 148,000
Other payment concessions
Financing Receivable, Modifications [Line Items]
Number of restructurings | restructuring			3	1
Post-modification recorded investment			$ 1,759,000	$ 12,000

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Allowance For Loan Loss - Other Real Estate Owned (Details)	6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value of OREO	$ 255,000	$ 0	$ 0
Net gains on sales of OREO	0	0
Consumer Mortgage Loans in Process of Foreclosure, Amount	$ 0		$ 0
Other real estate owned
Accounts, Notes, Loans and Financing Receivable [Line Items]
OREO Additions	1
OREO fair value adjustment	$ 0	$ 0

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Allowance For Loan Loss - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses to total loans ratio	1.42%	1.51%	1.42%	1.51%	1.42%
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	$ 33,729	$ 34,524	$ 33,849	$ 32,915
Provision for loan losses	955	300	555	1,900
Recoveries	151	69	474	183
Less: Charge offs	484	96	527	201
Ending Balance	34,351	34,797	34,351	34,797
Allocated to loans individually evaluated for impairment	2,349	2,683	2,349	2,683
Allocated to loans collectively evaluated for impairment	32,002	32,114	32,002	32,114
Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	17,826	18,300	18,014	17,545
Provision for loan losses	2	114	(186)	869
Recoveries	0	0	0	0
Less: Charge offs	0	0	0	0
Ending Balance	17,828	18,414	17,828	18,414
Allocated to loans individually evaluated for impairment	5	42	5	42
Allocated to loans collectively evaluated for impairment	17,823	18,372	17,823	18,372
Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	10,403	11,171	10,493	9,669
Provision for loan losses	647	(109)	241	1,326
Recoveries	140	57	456	165
Less: Charge offs	459	76	459	117
Ending Balance	10,731	11,043	10,731	11,043
Allocated to loans individually evaluated for impairment	2,307	2,621	2,307	2,621
Allocated to loans collectively evaluated for impairment	8,424	8,422	8,424	8,422
Commercial construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	3,452	3,283	3,307	3,947
Provision for loan losses	265	261	410	(403)
Recoveries	0	0	0	0
Less: Charge offs	0	0	0	0
Ending Balance	3,717	3,544	3,717	3,544
Allocated to loans individually evaluated for impairment	0	0	0	0
Allocated to loans collectively evaluated for impairment	3,717	3,544	3,717	3,544
Residential mortgages
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	1,184	914	1,160	904
Provision for loan losses	3	25	27	35
Recoveries	0	0	0	0
Less: Charge offs	0	0	0	0
Ending Balance	1,187	939	1,187	939
Allocated to loans individually evaluated for impairment	5	3	5	3
Allocated to loans collectively evaluated for impairment	1,182	936	1,182	936
Home equity loans and lines
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	627	629	629	608
Provision for loan losses	(1)	16	(5)	36
Recoveries	3	0	5	1
Less: Charge offs	0	0	0	0
Ending Balance	629	645	629	645
Allocated to loans individually evaluated for impairment	0	0	0	0
Allocated to loans collectively evaluated for impairment	629	645	629	645
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	237	227	246	242
Provision for loan losses	39	(7)	68	37
Recoveries	8	12	13	17
Less: Charge offs	25	20	68	84
Ending Balance	259	212	259	212
Allocated to loans individually evaluated for impairment	32	17	32	17
Allocated to loans collectively evaluated for impairment	$ 227	$ 195	$ 227	$ 195

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Leases Narrative (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($) property	Jun. 30, 2019 USD ($) property	Jan. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)
Lessee, Lease, Description [Line Items]
Number of operating leases | property	16	16
Operating lease under agreement to be purchased | property	1	1
Lease liability	$ 18,382	$ 18,382		$ 0
Lease right-of-use asset	19,339	19,339		$ 0
Operating lease expense	$ 373	$ 707
Weighted average remaining lease term on operating leases	27 years 8 months 12 days	27 years 8 months 12 days
Weighted average discount rate for operating leases	3.79%	3.79%
Accounting Standards Update 2016-02
Lessee, Lease, Description [Line Items]
Lease liability			$ 18,000
Lease right-of-use asset			$ 19,000

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Leases Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2019 (six remaining months)	$ 629
2020	1,242
2021	1,242
2022	1,245
2023	1,252
After 2023	24,599
Total lease payments	30,209
Less: Imputed interest	11,827
Total lease liability	$ 18,382	$ 0

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Deposits (Details) - USD ($) $ in Thousands		Jun. 30, 2019	Dec. 31, 2018
Deposits [Abstract]
Non-interest checking		$ 822,455	$ 765,029
Interest-bearing checking		496,828	403,497
Savings		209,477	193,214
Money market		1,006,526	862,028
CDs $250,000 or less		222,879	215,200
CDs greater than $250,000		71,983	69,031
Total customer deposits		2,830,148	2,507,999
Brokered deposits	[1]	0	56,783
Total deposits		2,830,148	2,564,782
Reciprocal deposits		$ 412,000	$ 342,400

[1] Brokered CDs which are $250,000 and under.

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Borrowed Funds and Subordinated Debt (Details) - USD ($)	1 Months Ended	6 Months Ended
	Jan. 31, 2015	Jun. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Borrowed funds		$ 484,000	$ 100,492,000
Subordinated debt		$ 14,866,000	$ 14,860,000
Fixed-to Floating Rate Subordinated Notes
Debt Instrument [Line Items]
Subordinated debt	$ 15,000,000
Subordinated debt, term		15 years
Original debt issuance costs	$ 190,000
Subordinated debt, rate until January 30, 2025		6.00%

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Derivatives and Hedging Activities (Details)	6 Months Ended		12 Months Ended
	Jun. 30, 2019 USD ($) instrument loan	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($) instrument loan
Derivative [Line Items]
Number of Participation Loans with Swap Contingent Liabilities | loan	1		1
Interest-rate swaps
Derivative [Line Items]
Gain (Loss) on Interest Rate Swaps	$ 0	$ 0
Number of Interest Rate Swaps | instrument	8		8
Aggregate notional value of interest-rate swaps	$ 37,100,000		$ 37,700,000
Fair Value of Interest-Rate Swap Assets	559,000		723,000
Fair Value of Interest-Rate Swap Liabilities	559,000		723,000
Counterparty Credit Risk Exposure on Interest Rate Swaps	0		678,000
Collateral posted for interest-rate swaps	400,000
Collateral received for interest-rate swaps			850,000
Receive Fixed Pay Variable | Interest-rate swaps
Derivative [Line Items]
Fair Value of Interest-Rate Swap Assets	559,000		45,000
Fair Value of Interest-Rate Swap Liabilities	207,000		723,000
Pay Fixed Receive Variable | Interest-rate swaps
Derivative [Line Items]
Fair Value of Interest-Rate Swap Assets	0		678,000
Fair Value of Interest-Rate Swap Liabilities	352,000		0
Gross Amount Interest Rate Swap Liabilities Recognized	559,000
Gross Amount Interest-Rate offset in the Statement of Financial Position	$ 207,000
Gross Amount Interest Rate Swap Asset Recognized			723,000
Gross Amount Interest-Rate offset in the Statement of Financial Position			$ 45,000

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Stockholder's Equity (Details) - $ / shares	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Class of Stock [Line Items]
Common stock, shares authorized	40,000,000	40,000,000
Common stock, par value	$ 0.01	$ 0.01
Common Stock, Shares, Outstanding	11,806,008	11,708,218
Common stock, shares issued	11,806,008	11,708,218
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares issued	0	0
Unvested participating restricted stock awards	109,501	91,708
Common Stock
Class of Stock [Line Items]
Votes Per Share, Number	1
Series A Junior Participating Preferred Stock
Class of Stock [Line Items]
Price per one one-hundredth of a share	$ 122.50
Minimum acquisition percentage to trigger the exercise of the right to purchase	10.00%
Amount of a share allowed to be purchased under right to purchase	0.01

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Supplemental Retirement Plan and Other Postretirement Benefit Obligations (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($) officer	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) officer	Jun. 30, 2018 USD ($)
Supplemental Employee Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Number of Active Executive Officers under Plan | officer	2		2
Number of Former Executive Officers under Plan | officer	1		1
Term of SERP benefits			20 years
Benefits Paid	$ 69	$ 69	$ 138	$ 138
SERP expenses	108	56	219	112
Remaining expected SERP accrual in current year	209		209
Supplemental Life Insurance Benefit
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost	$ 49	$ 44	$ 99	$ 89

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Stock-Based Compensation Summary Information for Options Granted (Details) - $ / shares	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted	23,218	14,755
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term in years	10 years	10 years
Expected volatility	33.00%	37.00%
Weighted average market price on date of grants	$ 29.84	$ 34.33
Options granted, per share weighted average fair value	$ 8.70	$ 11.98
Weighted Average | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield	2.75%	2.10%
Expected life in years	6 years 6 months	6 years 6 months
Risk-free interest rate	2.58%	2.86%
Fair Value as a percentage of market value at grant date	29.00%	35.00%

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Stock-Based Compensation Stock Options, Stock Awards, and Stock in Lieu of Directors' Fees (Details) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 31, 2019 shares	Jun. 30, 2019 USD ($) plans shares	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) plans shares	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)	Jan. 02, 2018 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of individual stock incentive plans | plans		1		1
Stock-based compensation expense		$ 518	$ 500	$ 944	$ 885
Income tax benefit for stock compensation in Income Statement		17	40	128	235
Fair market share price | $ / shares							$ 33.50
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense		48	51	$ 96	102
Restricted stock | Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				4 years
Restricted stock | Non-Employee Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				2 years
Restricted stock and common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense		409	387	$ 710	646
Common stock in lieu of cash | Non-Employee Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense		$ 61	$ 62	$ 138	$ 137	$ 250
Number of shares issued in lieu of cash to directors | shares	7,470
Vesting, Year Two | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, vesting percentage				50.00%	50.00%
Vesting, Year Four | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, vesting percentage				50.00%	50.00%
2016 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares remain available for future grants | shares		271,485		271,485
2009 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of unissued expired shares | shares		87,849		87,849

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Stock-Based Compensation Restricted Stock Grants (Details) - Restricted stock - $ / shares	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards in the period	55,198	44,505
Weighted Average Grant Date Fair Value, Stock Awards	$ 29.84	$ 34.33
Non-Employee Director | Two year vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards in the period	8,368	7,280
Employee | Four year vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards in the period	22,403	16,666
Employee | Performance-based vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards in the period	24,427	20,559

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Earnings Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Basic weighted average common shares outstanding	11,798,942	11,687,182	11,764,901	11,658,046
Dilutive shares	35,565	77,229	43,932	75,345
Diluted weighted average common shares outstanding	11,834,507	11,764,411	11,808,833	11,733,391
Antidilutive shares excluded from EPS	52,571	29,260	52,478	29,260

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Fair Value Measurements - Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Specific allowance for collateral dependent impaired loans	$ 1,600	$ 1,600
Letter of Credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortization period of estimated fair value on letters of credit	1 year
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Interest-rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of liabilities	$ 0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	2,428	1,448
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | FHLB Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Interest-rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Interest-rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of liabilities	559	723
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	465,944	431,473
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | FHLB Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Interest-rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	559	723
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Interest-rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of liabilities	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | FHLB Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	1,576	5,357
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Interest-rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	0	0
Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans (collateral dependent), Fair Value	0	0
Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 1 | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	0
Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans (collateral dependent), Fair Value	0	0
Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 2 | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	0
Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans (collateral dependent), Fair Value	1,875	2,574
Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 3 | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	255
Fair Value | Fair Value, Measurements, Recurring | Interest-rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of liabilities	559	723
Fair Value | Fair Value, Measurements, Recurring | Debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	465,944	431,473
Fair Value | Fair Value, Measurements, Recurring | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	2,428	1,448
Fair Value | Fair Value, Measurements, Recurring | FHLB Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	1,576	5,357
Fair Value | Fair Value, Measurements, Recurring | Interest-rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	559	723
Fair Value | Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans (collateral dependent), Fair Value	1,875	$ 2,574
Fair Value | Fair Value, Measurements, Nonrecurring | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	$ 255

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Fair Value Measurements - Quantitative (Details) - Fair Value, Inputs, Level 3 $ in Thousands		Jun. 30, 2019 USD ($)	Dec. 31, 2018 USD ($)
Fair Value, Measurements, Recurring | FHLB Stock
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of assets		$ 1,576	$ 5,357
Fair Value, Measurements, Recurring | FHLB Stock | FHLB stated par value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of assets		1,576	5,357
Fair Value, Measurements, Nonrecurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans (collateral dependent), Fair Value		1,875	2,574
Fair Value, Measurements, Nonrecurring | Impaired loans (collateral dependent) | Appraisal of collateral
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans (collateral dependent), Fair Value	[1]	1,875	2,574
Fair Value, Measurements, Nonrecurring | Other real estate owned
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of assets		255
Fair Value, Measurements, Nonrecurring | Other real estate owned | Appraisal of collateral
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of assets	[1]	$ 255	$ 0
Appraisal adjustments | Fair Value, Measurements, Nonrecurring | Impaired loans (collateral dependent) | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans, collateral dependent, unobservable input value or range		0.05
Appraisal adjustments | Fair Value, Measurements, Nonrecurring | Impaired loans (collateral dependent) | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans, collateral dependent, unobservable input value or range		0.5
Appraisal adjustments | Fair Value, Measurements, Nonrecurring | Other real estate owned | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned, unobservable input value or range		0
Appraisal adjustments | Fair Value, Measurements, Nonrecurring | Other real estate owned | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned, unobservable input value or range		0.3

[1] Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses.

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Fair Value Measurements - Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Carrying Amount
Financial assets:
Loans held for sale	$ 1,376	$ 701
Loans, net	2,379,751	2,353,657
Financial liabilities:
Borrowed Funds	484	100,492
Subordinated debt	14,866	14,860
Carrying Amount | Certificates of deposit
Financial liabilities:
Certificates of deposit	294,862	341,014
Fair Value
Financial assets:
Loans held for sale	1,387	710
Loans, net	2,384,279	2,331,076
Financial liabilities:
Borrowed Funds	339	100,312
Subordinated debt	15,187	14,300
Fair Value | Certificates of deposit
Financial liabilities:
Certificates of deposit	295,456	339,308
Fair Value, Inputs, Level 1
Financial assets:
Loans held for sale	0	0
Loans, net	0	0
Financial liabilities:
Borrowed Funds	0	0
Subordinated debt	0	0
Fair Value, Inputs, Level 1 | Certificates of deposit
Financial liabilities:
Certificates of deposit	0	0
Fair Value, Inputs, Level 2
Financial assets:
Loans held for sale	1,387	710
Loans, net	0	0
Financial liabilities:
Borrowed Funds	339	100,312
Subordinated debt	0	0
Fair Value, Inputs, Level 2 | Certificates of deposit
Financial liabilities:
Certificates of deposit	295,456	339,308
Fair Value, Inputs, Level 3
Financial assets:
Loans held for sale	0	0
Loans, net	2,384,279	2,331,076
Financial liabilities:
Borrowed Funds	0	0
Subordinated debt	15,187	14,300
Fair Value, Inputs, Level 3 | Certificates of deposit
Financial liabilities:
Certificates of deposit	$ 0	$ 0

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Supplemental Cash Flow (Details) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018
Supplemental financial data:
Cash paid for: interest		$ 10,753	$ 5,559
Cash paid for: income taxes		5,671	4,663
Cash paid for: lease liability		576	0
Supplemental schedule of non-cash activity:
Net purchases of investment securities not yet settled		2,950	351
Transfer from loans to other real estate owned		255	0
ROU lease assets: operating leases(1)	[1]	$ 19,635	$ 0

[1] This represents the ROU lease asset that was recorded upon adoption of ASC 842 and new leases added in the current year and is primarily offset by a corresponding lease liability