The First Bancorp, Inc. (FNLC) 10-Q 8 May 20 2020 Q1 Quarterly report Financial data

Cover

Cover - shares	3 Months Ended
	Mar. 31, 2020	May 01, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Entity File Number	0-26589
Entity Registrant Name	FIRST BANCORP, INC
Entity Incorporation, State or Country Code	ME
Entity Tax Identification Number	01-0404322
Entity Address, Address Line One	Main Street
Entity Address, City or Town	Damariscotta
Entity Address, State or Province	ME
Entity Address, Postal Zip Code	04543
Entity Central Index Key	0000765207
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Amendment Flag	false
City Area Code	207
Local Phone Number	563-3195
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		10,926,008

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Assets
Cash and cash equivalents	$ 21,117	$ 14,433	$ 15,270
Interest bearing deposits in other banks	6,047	11,310	231
Securities available for sale	312,928	360,520	325,276
Securities to be held to maturity (fair value of $349,248,000 at March 31, 2020, $287,045,000 at December 31, 2019 and $282,568,000 at March 31, 2019)	341,592	281,606	281,219
Restricted equity securities, at cost	9,994	8,982	8,982
Loans held for sale	561	154	436
Loans	1,344,208	1,297,075	1,264,639
Less allowance for loan losses	11,858	11,639	11,490
Net loans	1,332,350	1,285,436	1,253,149
Accrued interest receivable	9,648	7,167	9,307
Premises and equipment, net	21,156	21,305	21,767
Other real estate owned	316	279	584
Goodwill	29,805	29,805	29,805
Other assets	50,882	47,799	45,376
Total assets	2,136,396	2,068,796	1,991,402
Liabilities
Demand deposits	153,477	169,777	148,500
NOW deposits	382,307	393,569	371,305
Money market deposits	161,184	161,000	137,700
Savings deposits	236,706	236,141	236,894
Certificates of deposit	710,938	689,979	712,476
Total deposits	1,644,612	1,650,466	1,606,875
Borrowed funds – short term	192,937	174,850	160,309
Borrowed funds – long term	55,103	10,105	10,110
Other liabilities	28,487	20,867	16,321
Total liabilities	1,921,139	1,856,288	1,793,615
Shareholders' equity
Common stock, one cent par value per share	109	109	109
Additional paid-in capital	64,277	63,964	63,037
Retained earnings	147,904	144,839	135,364
Accumulated other comprehensive income (loss)
Net unrealized gain (loss) on securities available for sale	7,890	3,657	(1,539)
Net unrealized loss on securities transferred from available for sale to held to maturity	(174)	(182)	(194)
Net unrealized (loss) gain on cash flow hedging derivative instruments	(4,773)
Net unrealized (loss) gain on cash flow hedging derivative instruments		97	973
Net unrealized gain on postretirement costs	24	24	37
Total shareholders' equity	215,257	212,508	197,787
Total liabilities & shareholders' equity	$ 2,136,396	$ 2,068,796	$ 1,991,402
Common Stock
Number of shares authorized (in shares)	18,000,000	18,000,000	18,000,000
Number of shares issued (in shares)	10,921,206	10,899,210	10,884,381
Number of shares outstanding (in shares)	10,921,206	10,899,210	10,884,381
Book value per common share (usd per share)	$ 19.71	$ 19.50	$ 18.17
Tangible book value per common share (usd per share)	$ 16.97	$ 16.75	$ 15.42

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Assets
Securities to be held to maturity, fair value	$ 349,248	$ 287,045	$ 282,568

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Interest income
Interest and fees on loans (includes tax-exempt income of $310,000 as of March 31, 2020 and $358,000 as of March 31, 2019)	$ 15,856	$ 14,557
Interest on deposits with other banks	74	68
Interest and dividends on investments (includes tax-exempt income of $1,841,000 as of March 31, 2020 and $1,755,000 as of March 31, 2019)	4,764	4,643
Total interest income	20,694	19,268
Interest expense
Interest on deposits	5,186	5,577
Interest on borrowed funds	590	792
Total interest expense	5,776	6,369
Net interest income	14,918	12,899
Provision for loan losses	400	375
Net interest income after provision for loan losses	14,518	12,524
Non-interest income
Net securities gains	752	0
Other operating income	1,494	1,514
Total non-interest income	4,221	3,144
Non-interest expense
Salaries and employee benefits	5,025	4,410
Occupancy expense	713	652
Furniture and equipment expense	1,116	975
FDIC insurance premiums	173	208
Amortization of identified intangibles	11	11
Other operating expense	4,005	2,142
Total non-interest expense	11,043	8,398
Income before income taxes	7,696	7,270
Income tax expense	1,201	1,114
NET INCOME	$ 6,495	$ 6,156
Basic earnings per common share (usd per share)	$ 0.60	$ 0.57
Diluted earnings per common share (usd per share)	$ 0.60	$ 0.57
Other comprehensive income (loss) net of tax
Net unrealized gain on securities available for sale	$ 4,233	$ 3,512
Net unrealized gain on securities transferred from available for sale to held to maturity, net of amortization	8	3
Net unrealized loss on cash flow hedging derivative instruments	(4,870)
Net unrealized loss on cash flow hedging derivative instruments		(465)
Other comprehensive income (loss)	(629)	3,050
Comprehensive income	5,866	9,206
Investment management and fiduciary income
Non-interest income
Non-interest income	894	773
Service charges on deposit accounts
Non-interest income
Non-interest income	577	561
Mortgage origination and servicing income, net of amortization
Non-interest income
Non-interest income	$ 504	$ 296

Consolidated Statements of In_2

Consolidated Statements of Income and Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Interest and fees on loans (tax-exempt income)	$ 310	$ 358
Interest and dividends on investments (tax-exempt income)	$ 1,841	$ 1,755

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common stock and additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)
Beginning balance (in shares) at Dec. 31, 2018		10,862,651
Beginning balance at Dec. 31, 2018	$ 191,542	$ 62,855	$ 132,460	$ (3,773)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	6,156		6,156
Net unrealized gain on securities available for sale, net of tax	3,512			3,512
Net unrealized loss on cash flow hedging derivative instruments, net of tax	(465)			(465)
Net unrealized gain on securities transferred from available for sale to held to maturity, net of tax	3			3
Comprehensive income (loss)	9,206		6,156	3,050
Cash dividends declared	(3,156)		(3,156)
Equity compensation expense	123	$ 123
Payment to repurchase common stock (in shares)		(3,804)
Payment to repurchase common stock	(96)		(96)
Issuance of restricted stock (in shares)		19,087
Proceeds from sale of common stock (in shares)		6,447
Proceeds from sale of common stock	$ 168	$ 168
Ending balance (in shares) at Mar. 31, 2019	10,884,381	10,884,381
Ending balance at Mar. 31, 2019	$ 197,787	$ 63,146	135,364	(723)
Beginning balance (in shares) at Dec. 31, 2019	10,899,210	10,899,210
Beginning balance at Dec. 31, 2019	$ 212,508	$ 64,073	144,839	3,596
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	6,495		6,495
Net unrealized gain on securities available for sale, net of tax	4,233			4,233
Net unrealized loss on cash flow hedging derivative instruments, net of tax	(4,870)			(4,870)
Net unrealized gain on securities transferred from available for sale to held to maturity, net of tax	8			8
Comprehensive income (loss)	5,866		6,495	(629)
Cash dividends declared	(3,276)		(3,276)
Equity compensation expense	150	$ 150
Payment to repurchase common stock (in shares)		(5,297)
Payment to repurchase common stock	(154)		(154)
Issuance of restricted stock (in shares)		21,595
Proceeds from sale of common stock (in shares)		5,698
Proceeds from sale of common stock	$ 163	$ 163
Ending balance (in shares) at Mar. 31, 2020	10,921,206	10,921,206
Ending balance at Mar. 31, 2020	$ 215,257	$ 64,386	$ 147,904	$ 2,967

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Stockholders' Equity [Abstract]
Cash dividends declared (usd per share)	$ 0.30	$ 0.29

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities
Net income	$ 6,495,000	$ 6,156,000
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation	538,000	449,000
Change in deferred taxes	52,000	203,000
Provision for loan losses	400,000	375,000
Loans originated for resale	(11,637,000)	(4,661,000)
Proceeds from sales and transfers of loans	11,417,000	4,305,000
Net gain on sales of loans	(187,000)	(80,000)
Net gain on sale or call of securities	(752,000)	0
Net amortization of premiums on investments	369,000	261,000
Equity compensation expense	150,000	123,000
Net increase in other assets and accrued interest	(11,811,000)	(6,055,000)
Net increase (decrease) in other liabilities	7,729,000	(435,000)
Net loss on disposal of premises and equipment	0	1,000
Amortization of investment in limited partnership	78,000	77,000
Net acquisition amortization	11,000	11,000
Net cash provided by operating activities	2,852,000	730,000
Cash flows from investing activities
Increase in interest-bearing deposits in other banks	5,263,000	11,848,000
Proceeds from sales of securities available for sale	68,620,000	0
Proceeds from maturities, payments and calls of securities available for sale	21,890,000	11,622,000
Proceeds from maturities, payments, calls and sales of securities to be held to maturity	27,275,000	2,804,000
Purchases of securities available for sale	(37,173,000)	(15,325,000)
Purchases of securities to be held to maturity	(87,255,000)	(28,328,000)
Redemption of restricted equity securities	0	2,604,000
Purchase of restricted equity securities	(1,012,000)	0
Net increase in loans	(47,351,000)	(26,473,000)
Capital expenditures	(389,000)	(161,000)
Net cash used by investing activities	(50,132,000)	(41,409,000)
Cash flows from financing activities
Net decrease in demand, savings, and money market accounts	(26,813,000)	(41,277,000)
Net increase in certificates of deposit	20,959,000	121,067,000
Net increase in short-term borrowings	18,087,000	0
Advances on long-term borrowings	44,998,000	0
Repayment on long-term borrowings	0	(39,898,000)
Payment to repurchase common stock	(154,000)	(96,000)
Proceeds from sale of common stock	163,000	168,000
Dividends paid	(3,276,000)	(3,149,000)
Net cash provided by financing activities	53,964,000	36,815,000
Net increase in cash and cash equivalents	6,684,000	(3,864,000)
Cash and cash equivalents at beginning of period	14,433,000	19,134,000
Cash and cash equivalents at end of period	21,117,000	15,270,000
Interest paid	5,777,000	6,221,000
Income taxes paid	0	0
Non-cash transactions
Net transfer from loans to other real estate owned	$ 37,000	$ 0

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The First Bancorp, Inc. ("the Company") is a financial holding company that owns all of the common stock of First National Bank ("the Bank"). The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of Management, all adjustments (consisting of normally recurring accruals) considered necessary for a fair presentation have been included. All significant intercompany transactions and balances are eliminated in consolidation. The income reported for the 2020 period is not necessarily indicative of the results that may be expected for the year ending December 31, 2020 . For further information, refer to the consolidated financial statements and notes included in the Company's annual report on Form 10-K for the year ended December 31, 2019 . Risks and Uncertainties Local, U.S., and world governments have encouraged self–isolation to curtail the spread of the global pandemic, coronavirus disease (COVID–19) by mandating the temporary shut–down of business in many sectors and imposing limitations on travel and size and duration of group meetings. Most industries are experiencing disruption to business operations and the impact of reduced consumer spending. There is unprecedented uncertainty surrounding the duration of the pandemic, its potential economic ramifications, and any government actions to mitigate them. The Company’s business, financial condition and results of operations generally rely upon the ability of the Bank’s borrowers to repay their loans, the value of collateral underlying the Bank’s secured loans, and demand for loans and other products and services the Bank offers, which are highly dependent on the business environment in the Bank’s primary markets where it operates and in the United States as a whole. The Bank's primary market is the State of Maine, which relies upon tourism for a significant percentage of its economic activity. COVID-19 is expected to adversely impact the tourism industry to a greater degree than other industries, however, an overall impact of COVID-19 on the Maine economy cannot be assessed with any degree of certainty at this time. In addition to loans, demand for other products and services could be impacted by COVID-19. Depositors and other funding sources may be unwilling to renew certificates of deposit or other types of funding, or may only be willing to do so on terms, including higher interest rates, that are materially less favorable than the Bank has experienced in the recent past. Certain fee based activities such as debit card interchange and wealth management activity, could be impacted due to lower activity or market declines. Accordingly, while management expects this matter is likely to have a negative financial impact on the Company's financial position and results of future operations, such potential impact cannot be reasonably estimated as of the date of this report, May 8, 2020. Subsequent Events Events occurring subsequent to March 31, 2020 , have been evaluated as to their potential impact to the financial statements.

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The following table summarizes the amortized cost and estimated fair value of investment securities at March 31, 2020 : Amortized Cost Unrealized Gains Unrealized Losses Fair Value (Estimated) Securities available for sale U.S. Government-sponsored agencies $ 7,500,000 $ 52,000 $ — $ 7,552,000 Mortgage-backed securities 276,235,000 9,106,000 (189,000 ) 285,152,000 State and political subdivisions 19,206,000 1,018,000 — 20,224,000 $ 302,941,000 $ 10,176,000 $ (189,000 ) $ 312,928,000 Securities to be held to maturity U.S. Government-sponsored agencies $ 35,981,000 $ 207,000 $ — $ 36,188,000 Mortgage-backed securities 51,142,000 1,392,000 (7,000 ) 52,527,000 State and political subdivisions 239,719,000 5,819,000 (345,000 ) 245,193,000 Corporate securities 14,750,000 590,000 — 15,340,000 $ 341,592,000 $ 8,008,000 $ (352,000 ) $ 349,248,000 Restricted equity securities Federal Home Loan Bank Stock $ 8,957,000 $ — $ — $ 8,957,000 Federal Reserve Bank Stock 1,037,000 — — 1,037,000 $ 9,994,000 $ — $ — $ 9,994,000 The following table summarizes the amortized cost and estimated fair value of investment securities at December 31, 2019 : Amortized Cost Unrealized Gains Unrealized Losses Fair Value (Estimated) Securities available for sale U.S. Government-sponsored agencies $ 7,500,000 $ — $ (102,000 ) $ 7,398,000 Mortgage-backed securities 323,277,000 4,173,000 (833,000 ) 326,617,000 State and political subdivisions 25,113,000 1,392,000 — 26,505,000 $ 355,890,000 $ 5,565,000 $ (935,000 ) $ 360,520,000 Securities to be held to maturity U.S. Government-sponsored agencies $ 32,840,000 $ 47,000 $ (26,000 ) $ 32,861,000 Mortgage-backed securities 14,431,000 450,000 (16,000 ) 14,865,000 State and political subdivisions 219,585,000 4,936,000 (109,000 ) 224,412,000 Corporate securities 14,750,000 157,000 — 14,907,000 $ 281,606,000 $ 5,590,000 $ (151,000 ) $ 287,045,000 Restricted equity securities Federal Home Loan Bank Stock $ 7,945,000 $ — $ — $ 7,945,000 Federal Reserve Bank Stock 1,037,000 — — 1,037,000 $ 8,982,000 $ — $ — $ 8,982,000 The following table summarizes the amortized cost and estimated fair value of investment securities at March 31, 2019 : Amortized Cost Unrealized Gains Unrealized Losses Fair Value (Estimated) Securities available for sale U.S. Government-sponsored agencies $ 5,000,000 $ 16,000 $ — $ 5,016,000 Mortgage-backed securities 317,269,000 1,394,000 (3,240,000 ) 315,423,000 State and political subdivisions 4,955,000 4,000 (122,000 ) 4,837,000 $ 327,224,000 $ 1,414,000 $ (3,362,000 ) $ 325,276,000 Securities to be held to maturity U.S. Government-sponsored agencies $ 31,155,000 $ 48,000 $ (280,000 ) $ 30,923,000 Mortgage-backed securities 17,560,000 372,000 (146,000 ) 17,786,000 State and political subdivisions 225,204,000 3,162,000 (1,801,000 ) 226,565,000 Corporate securities 7,300,000 — (6,000 ) 7,294,000 $ 281,219,000 $ 3,582,000 $ (2,233,000 ) $ 282,568,000 Restricted equity securities Federal Home Loan Bank Stock $ 7,945,000 $ — $ — $ 7,945,000 Federal Reserve Bank Stock 1,037,000 — — 1,037,000 $ 8,982,000 $ — $ — $ 8,982,000 The following table summarizes the contractual maturities of investment securities at March 31, 2020 : Securities available for sale Securities to be held to maturity Amortized Cost Fair Value (Estimated) Amortized Cost Fair Value (Estimated) Due in 1 year or less $ 66,000 $ 66,000 $ 1,331,000 $ 1,337,000 Due in 1 to 5 years 25,221,000 26,159,000 27,854,000 28,361,000 Due in 5 to 10 years 62,462,000 65,032,000 184,037,000 189,214,000 Due after 10 years 215,192,000 221,671,000 128,370,000 130,336,000 $ 302,941,000 $ 312,928,000 $ 341,592,000 $ 349,248,000 The following table summarizes the contractual maturities of investment securities at December 31, 2019 : Securities available for sale Securities to be held to maturity Amortized Cost Fair Value (Estimated) Amortized Cost Fair Value (Estimated) Due in 1 year or less $ 127,000 $ 127,000 $ 1,334,000 $ 1,338,000 Due in 1 to 5 years 36,534,000 36,778,000 25,860,000 26,323,000 Due in 5 to 10 years 93,134,000 95,014,000 179,133,000 182,834,000 Due after 10 years 226,095,000 228,601,000 75,279,000 76,550,000 $ 355,890,000 $ 360,520,000 $ 281,606,000 $ 287,045,000 The following table summarizes the contractual maturities of investment securities at March 31, 2019 : Securities available for sale Securities to be held to maturity Amortized Cost Fair Value (Estimated) Amortized Cost Fair Value (Estimated) Due in 1 year or less $ — $ — $ 1,429,000 $ 1,431,000 Due in 1 to 5 years 15,670,000 15,736,000 21,096,000 21,203,000 Due in 5 to 10 years 107,978,000 108,698,000 176,967,000 178,044,000 Due after 10 years 203,576,000 200,842,000 81,727,000 81,890,000 $ 327,224,000 $ 325,276,000 $ 281,219,000 $ 282,568,000 At March 31, 2020 , securities with a fair value of $208,376,000 were pledged to secure public deposits, repurchase agreements, and for other purposes as required by law. This compares to securities with a fair value of $214,173,000 as of December 31, 2019 and $189,711,000 at March 31, 2019 , pledged for the same purposes. Gains and losses on the sale of securities are computed by subtracting the amortized cost at the time of sale from the security's selling price, net of accrued interest to be received. The following table shows securities gains and losses for the three months ended March 31, 2020 and 2019 : For the three months ended March 31, 2020 2019 Proceeds from sales of securities $ 68,620,000 $ — Gross realized gains 1,098,000 — Gross realized losses (346,000 ) — Net gain $ 752,000 $ — Related income taxes $ 158,000 $ — Management reviews securities with unrealized losses for other than temporary impairment. As of March 31, 2020 , there were 70 securities with unrealized losses held in the Company's portfolio. These securities were temporarily impaired as a result of changes in interest rates reducing their fair value, of which 14 had been temporarily impaired for 12 months or more. The Company has the ability and intent to hold its impaired securities until a recovery of their amortized cost, which may be at maturity. Information regarding securities temporarily impaired as of March 31, 2020 is summarized below: Less than 12 months 12 months or more Total Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses Mortgage-backed securities $ 2,963,000 $ (27,000 ) $ 7,424,000 $ (169,000 ) $ 10,387,000 $ (196,000 ) State and political subdivisions 19,556,000 (345,000 ) — — 19,556,000 (345,000 ) $ 22,519,000 $ (372,000 ) $ 7,424,000 $ (169,000 ) $ 29,943,000 $ (541,000 ) As of December 31, 2019 , there were 86 securities with unrealized losses held in the Company's portfolio. These securities were temporarily impaired as a result of changes in interest rates reducing their fair value, of which 28 had been temporarily impaired for 12 months or more. Information regarding securities temporarily impaired as of December 31, 2019 is summarized below: Less than 12 months 12 months or more Total Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses U.S. Government-sponsored agencies $ 12,372,000 $ (128,000 ) $ — $ — $ 12,372,000 $ (128,000 ) Mortgage-backed securities 54,244,000 (359,000 ) 18,696,000 (490,000 ) 72,940,000 (849,000 ) State and political subdivisions 10,532,000 (101,000 ) 304,000 (8,000 ) 10,836,000 (109,000 ) $ 77,148,000 $ (588,000 ) $ 19,000,000 $ (498,000 ) $ 96,148,000 $ (1,086,000 ) As of March 31, 2019 , there were 291 securities with unrealized losses held in the Company's portfolio. These securities were temporarily impaired as a result of changes in interest rates reducing their fair value, of which 274 had been temporarily impaired for 12 months or more. In the first quarter of 2019, one issuer of securities held in the portfolio was downgraded by a rating agency to less than investment grade. These securities totaled approximately 0.09% of overall state and municipal security holdings and were subsequently sold during the third quarter 2019. Information regarding securities temporarily impaired as of March 31, 2019 is summarized below: Less than 12 months 12 months or more Total Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses U.S. Government-sponsored agencies $ — $ — $ 10,875,000 $ (280,000 ) $ 10,875,000 $ (280,000 ) Mortgage-backed securities 24,525,000 (138,000 ) 198,272,000 (3,248,000 ) 222,797,000 (3,386,000 ) State and political subdivisions 1,264,000 (3,000 ) 58,168,000 (1,920,000 ) 59,432,000 (1,923,000 ) Corporate securities 2,994,000 (6,000 ) — — 2,994,000 (6,000 ) $ 28,783,000 $ (147,000 ) $ 267,315,000 $ (5,448,000 ) $ 296,098,000 $ (5,595,000 ) During the third quarter of 2014, the Company transferred securities with a total amortized cost of $89,780,000 with a corresponding fair value of $89,757,000 from available for sale to held to maturity. The net unrealized loss, net of taxes, on these securities at the date of the transfer was $15,000 . The net unrealized holding loss at the time of transfer continues to be reported in accumulated other comprehensive income (loss), net of tax and is amortized over the remaining lives of the securities as an adjustment of the yield. The amortization of the net unrealized loss reported in accumulated other comprehensive income (loss) will offset the effect on interest income of the discount for the transferred securities. The remaining unamortized balance of the net unrealized losses for the securities transferred from available for sale to held to maturity was $174,000 , net of tax, at March 31, 2020 . This compares to $182,000 and $194,000 , net of taxes, at December 31, 2019 and March 31, 2019, respectively. These securities were transferred as a part of the Company's overall investment and balance sheet strategies. The Bank is a member of the Federal Home Loan Bank ("FHLB") of Boston, a cooperatively owned wholesale bank for housing and finance in the six New England States. As a requirement of membership in the FHLB, the Bank must own a minimum required amount of FHLB stock, calculated periodically based primarily on its level of borrowings from the FHLB. The Bank uses the FHLB for a portion of its wholesale funding needs. As of March 31, 2020 and 2019 , and December 31, 2019 , the Bank's investment in FHLB stock totaled $8,957,000 , $7,945,000 and $7,945,000 , respectively. FHLB stock is a non-marketable equity security and therefore is reported at cost, which equals par value. The Company periodically evaluates its investment in FHLB stock for impairment based on, among other factors, the capital adequacy of the FHLB and its overall financial condition. No impairment losses have been recorded through March 31, 2020 . The Company will continue to monitor its investment in FHLB stock.

Loans

Loans	3 Months Ended
	Mar. 31, 2020
Loans and Leases Receivable Disclosure [Abstract]
Loans	Loans The following table shows the composition of the Company's loan portfolio as of March 31, 2020 and 2019 and at December 31, 2019 : March 31, 2020 December 31, 2019 March 31, 2019 Commercial Real estate $ 382,753,000 28.5 % $ 372,810,000 28.7 % $ 357,760,000 28.3 % Construction 43,913,000 3.3 % 38,084,000 3.0 % 34,231,000 2.7 % Other 237,896,000 17.7 % 218,773,000 16.9 % 205,462,000 16.2 % Municipal 43,537,000 3.2 % 41,288,000 3.2 % 54,246,000 4.3 % Residential Term 500,971,000 37.3 % 492,455,000 37.9 % 474,241,000 37.5 % Construction 15,202,000 1.1 % 14,813,000 1.2 % 18,450,000 1.5 % Home equity line of credit 90,674,000 6.7 % 92,349,000 7.1 % 95,692,000 7.6 % Consumer 29,262,000 2.2 % 26,503,000 2.0 % 24,557,000 1.9 % Total $ 1,344,208,000 100.0 % $ 1,297,075,000 100.0 % $ 1,264,639,000 100.0 % Loan balances include net deferred loan costs of $7,551,000 as of March 31, 2020 , $7,419,000 as of December 31, 2019 , and $6,878,000 as of March 31, 2019 . Pursuant to collateral agreements, qualifying first mortgage loans and commercial real estate loans, which totaled $401,555,000 at March 31, 2020 , were used to collateralize borrowings from the FHLB. This compares to qualifying loans which totaled $296,871,000 at December 31, 2019 , and $321,290,000 at March 31, 2019 . In addition, commercial, construction and home equity loans totaling $260,703,000 at March 31, 2020 , $240,133,000 at December 31, 2019 , and $251,591,000 at March 31, 2019 , were used to collateralize a standby line of credit at the Federal Reserve Bank of Boston that is currently unused. For all loan classes, loans over 30 days past due are considered delinquent. Information on the past-due status of loans by class of financing receivable as of March 31, 2020 , is presented in the following table: 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due All Past Due Current Total 90+ Days & Accruing Commercial Real estate $ 2,935,000 $ 2,000 $ 1,297,000 $ 4,234,000 $ 378,519,000 $ 382,753,000 $ 22,000 Construction 59,000 — 246,000 305,000 43,608,000 43,913,000 — Other 1,678,000 295,000 3,895,000 5,868,000 232,028,000 237,896,000 3,536,000 Municipal — — — — 43,537,000 43,537,000 — Residential Term 4,270,000 171,000 3,320,000 7,761,000 493,210,000 500,971,000 192,000 Construction — — — — 15,202,000 15,202,000 — Home equity line of credit 1,566,000 264,000 1,481,000 3,311,000 87,363,000 90,674,000 — Consumer 250,000 18,000 82,000 350,000 28,912,000 29,262,000 20,000 Total $ 10,758,000 $ 750,000 $ 10,321,000 $ 21,829,000 $ 1,322,379,000 $ 1,344,208,000 $ 3,770,000 Information on the past-due status of loans by class of financing receivable as of December 31, 2019 , is presented in the following table: 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due All Past Due Current Total 90+ Days & Accruing Commercial Real estate $ 786,000 $ 377,000 $ 611,000 $ 1,774,000 $ 371,036,000 $ 372,810,000 $ — Construction — 14,000 257,000 271,000 37,813,000 38,084,000 — Other 2,764,000 465,000 1,799,000 5,028,000 213,745,000 218,773,000 1,464,000 Municipal — — — — 41,288,000 41,288,000 — Residential Term 1,129,000 1,132,000 2,379,000 4,640,000 487,815,000 492,455,000 86,000 Construction — — — — 14,813,000 14,813,000 — Home equity line of credit 1,169,000 58,000 1,730,000 2,957,000 89,392,000 92,349,000 — Consumer 291,000 46,000 10,000 347,000 26,156,000 26,503,000 10,000 Total $ 6,139,000 $ 2,092,000 $ 6,786,000 $ 15,017,000 $ 1,282,058,000 $ 1,297,075,000 $ 1,560,000 Information on the past-due status of loans by class of financing receivable as of March 31, 2019 , is presented in the following table: 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due All Past Due Current Total 90+ Days & Accruing Commercial Real estate $ 282,000 $ 825,000 $ 621,000 $ 1,728,000 $ 356,032,000 $ 357,760,000 $ — Construction 47,000 — 286,000 333,000 33,898,000 34,231,000 — Other 664,000 63,000 303,000 1,030,000 204,432,000 205,462,000 — Municipal — — — — 54,246,000 54,246,000 — Residential Term 2,659,000 1,153,000 1,434,000 5,246,000 468,995,000 474,241,000 — Construction — — — — 18,450,000 18,450,000 — Home equity line of credit 1,985,000 11,000 369,000 2,365,000 93,327,000 95,692,000 — Consumer 411,000 163,000 4,000 578,000 23,979,000 24,557,000 4,000 Total $ 6,048,000 $ 2,215,000 $ 3,017,000 $ 11,280,000 $ 1,253,359,000 $ 1,264,639,000 $ 4,000 For all classes, loans are placed on non-accrual status when, based on current information and events, it is probable that the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement or when principal and interest is 90 days or more past due unless the loan is both well secured and in the process of collection (in which case the loan may continue to accrue interest in spite of its past due status). A loan is "well secured" if it is secured (1) by collateral in the form of liens on or pledges of real or personal property, including securities, that have a realizable value sufficient to discharge the debt (including accrued interest) in full, or (2) by the guarantee of a financially responsible party. A loan is "in the process of collection" if collection of the loan is proceeding in due course either (1) through legal action, including judgment enforcement procedures, or, (2) in appropriate circumstances, through collection efforts not involving legal action which are reasonably expected to result in repayment of the debt or in its restoration to a current status in the near future. Cash payments received on non-accrual loans, which are included in impaired loans, are applied to reduce the loan's principal balance until the remaining principal balance is deemed collectible, after which interest is recognized when collected. As a general rule, a loan may be restored to accrual status when payments are current for a substantial period of time, generally six months, and repayment of the remaining contractual amounts is expected, or when it otherwise becomes well secured and in the process of collection. Information on nonaccrual loans as of March 31, 2020 and 2019 and at December 31, 2019 is presented in the following table: March 31, 2020 December 31, 2019 March 31, 2019 Commercial Real estate $ 1,748,000 $ 1,784,000 $ 1,468,000 Construction 246,000 256,000 286,000 Other 457,000 6,534,000 7,067,000 Municipal — — — Residential Term 5,615,000 5,899,000 4,211,000 Construction — — — Home equity line of credit 1,916,000 2,171,000 702,000 Consumer 66,000 5,000 2,000 Total $ 10,048,000 $ 16,649,000 $ 13,736,000 Impaired loans include troubled debt restructured ("TDR") and loans placed on non-accrual. These loans are measured at the present value of expected future cash flows discounted at the loan's effective interest rate or at the fair value of the collateral if the loan is collateral dependent. If the measure of an impaired loan is lower than the recorded investment in the loan and estimated selling costs, a specific reserve is established for the difference, or, in certain situations, if the measure of an impaired loan is lower than the recorded investment in the loan and estimated selling costs, the difference is written off. A breakdown of impaired loans by class of financing receivable as of and for the period ended March 31, 2020 is presented in the following table: For the three months ended March 31, 2020 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Recognized Interest Income With No Related Allowance Commercial Real estate $ 5,162,000 $ 5,421,000 $ — $ 5,157,000 $ 47,000 Construction 246,000 265,000 — 717,000 — Other 818,000 848,000 — 793,000 3,000 Municipal — — — — — Residential Term 10,378,000 12,135,000 — 10,015,000 67,000 Construction — — — — — Home equity line of credit 1,232,000 1,306,000 — 1,185,000 4,000 Consumer — — — — — $ 17,836,000 $ 19,975,000 $ — $ 17,867,000 $ 121,000 With an Allowance Recorded Commercial Real estate $ 1,061,000 $ 1,082,000 $ 230,000 $ 1,064,000 $ 8,000 Construction 701,000 701,000 3,000 234,000 10,000 Other 172,000 194,000 172,000 4,269,000 — Municipal — — — — — Residential Term 1,660,000 1,755,000 233,000 1,999,000 13,000 Construction — — — — — Home equity line of credit 996,000 1,002,000 296,000 1,124,000 — Consumer 67,000 67,000 58,000 26,000 — $ 4,657,000 $ 4,801,000 $ 992,000 $ 8,716,000 $ 31,000 Total Commercial Real estate $ 6,223,000 $ 6,503,000 $ 230,000 $ 6,221,000 $ 55,000 Construction 947,000 966,000 3,000 951,000 10,000 Other 990,000 1,042,000 172,000 5,062,000 3,000 Municipal — — — — — Residential Term 12,038,000 13,890,000 233,000 12,014,000 80,000 Construction — — — — — Home equity line of credit 2,228,000 2,308,000 296,000 2,309,000 4,000 Consumer 67,000 67,000 58,000 26,000 — $ 22,493,000 $ 24,776,000 $ 992,000 $ 26,583,000 $ 152,000 Substantially all interest income recognized on impaired loans for all classes of financing receivables was recognized on a cash basis as received. A breakdown of impaired loans by class of financing receivable as of and for the year ended December 31, 2019 is presented in the following table: Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Recognized Interest Income With No Related Allowance Commercial Real estate $ 5,235,000 $ 5,492,000 $ — $ 7,611,000 $ 228,000 Construction 958,000 970,000 — 936,000 47,000 Other 756,000 786,000 — 965,000 29,000 Municipal — — — — — Residential Term 10,176,000 11,931,000 — 10,033,000 269,000 Construction — — — — — Home equity line of credit 1,087,000 1,151,000 — 997,000 20,000 Consumer — — — — — $ 18,212,000 $ 20,330,000 $ — $ 20,542,000 $ 593,000 With an Allowance Recorded Commercial Real estate $ 1,074,000 $ 1,093,000 $ 251,000 $ 1,528,000 $ 60,000 Construction — — — — — Other 6,319,000 6,925,000 1,273,000 6,778,000 — Municipal — — — — — Residential Term 2,263,000 2,412,000 237,000 2,424,000 82,000 Construction — — — — — Home equity line of credit 1,401,000 1,412,000 447,000 283,000 — Consumer 5,000 6,000 5,000 2,000 — $ 11,062,000 $ 11,848,000 $ 2,213,000 $ 11,015,000 $ 142,000 Total Commercial Real estate $ 6,309,000 $ 6,585,000 $ 251,000 $ 9,139,000 $ 288,000 Construction 958,000 970,000 — 936,000 47,000 Other 7,075,000 7,711,000 1,273,000 7,743,000 29,000 Municipal — — — — — Residential Term 12,439,000 14,343,000 237,000 12,457,000 351,000 Construction — — — — — Home equity line of credit 2,488,000 2,563,000 447,000 1,280,000 20,000 Consumer 5,000 6,000 5,000 2,000 — $ 29,274,000 $ 32,178,000 $ 2,213,000 $ 31,557,000 $ 735,000 A breakdown of impaired loans by class of financing receivable as of and for the period ended March 31, 2019 is presented in the following table: For the three months ended March 31, 2019 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Recognized Interest Income With No Related Allowance Commercial Real estate $ 8,391,000 $ 8,779,000 $ — $ 8,741,000 $ 90,000 Construction 1,007,000 1,007,000 — 817,000 12,000 Other 709,000 734,000 — 1,207,000 6,000 Municipal — — — — — Residential Term 8,926,000 10,345,000 — 9,007,000 68,000 Construction — — — — — Home equity line of credit 1,009,000 1,071,000 — 976,000 5,000 Consumer — — — — — $ 20,042,000 $ 21,936,000 $ — $ 20,748,000 $ 181,000 With an Allowance Recorded Commercial Real estate $ 1,566,000 $ 1,583,000 $ 233,000 $ 1,215,000 $ 26,000 Construction — — — — — Other 6,944,000 7,315,000 1,485,000 7,511,000 — Municipal — — — — — Residential Term 1,993,000 2,131,000 348,000 1,845,000 17,000 Construction — — — — — Home equity line of credit 21,000 25,000 7,000 29,000 — Consumer 2,000 2,000 2,000 1,000 — $ 10,526,000 $ 11,056,000 $ 2,075,000 $ 10,601,000 $ 43,000 Total Commercial Real estate $ 9,957,000 $ 10,362,000 $ 233,000 $ 9,956,000 $ 116,000 Construction 1,007,000 1,007,000 — 817,000 12,000 Other 7,653,000 8,049,000 1,485,000 8,718,000 6,000 Municipal — — — — — Residential Term 10,919,000 12,476,000 348,000 10,852,000 85,000 Construction — — — — — Home equity line of credit 1,030,000 1,096,000 7,000 1,005,000 5,000 Consumer 2,000 2,000 2,000 1,000 — $ 30,568,000 $ 32,992,000 $ 2,075,000 $ 31,349,000 $ 224,000 Troubled Debt Restructured A "TDR" constitutes a restructuring of debt if the Company, for economic or legal reasons related to the borrower's financial difficulties, grants a concession to the borrower that it would not otherwise consider. To determine whether or not a loan should be classified as a TDR, Management evaluates a loan based upon the following criteria: • The borrower demonstrates financial difficulty; common indicators include past due status with bank obligations, substandard credit bureau reports, or an inability to refinance with another lender, and • The Company has granted a concession; common concession types include maturity date extension, interest rate adjustments to below market pricing, and deferment of payments. As of March 31, 2020 , the Company had 81 loans with a balance of $14,968,000 that have been classified as TDRs. This compares to 81 loans with a balance of $21,424,000 and 80 loans with a balance of $25,386,000 classified as TDRs as of December 31, 2019 and March 31, 2019 , respectively. The impairment carried as a specific reserve in the allowance for loan losses is calculated by present valuing the expected cash flows on the loan at the original interest rate, or, for collateral-dependent loans, using the fair value of the collateral less costs to sell. The following table shows TDRs by class and the specific reserve as of March 31, 2020 : Number of Loans Balance Specific Reserves Commercial Real estate 16 $ 4,688,000 $ 225,000 Construction 1 701,000 3,000 Other 7 779,000 131,000 Municipal — — — Residential Term 54 8,321,000 197,000 Construction — — — Home equity line of credit 3 479,000 — Consumer — — — 81 $ 14,968,000 $ 556,000 The following table shows TDRs by class and the specific reserve as of December 31, 2019 : Number of Loans Balance Specific Reserves Commercial Real estate 17 $ 4,836,000 $ 246,000 Construction 1 701,000 — Other 8 6,932,000 1,231,000 Municipal — — — Residential Term 52 8,472,000 200,000 Construction — — — Home equity line of credit 3 483,000 — Consumer — — — 81 $ 21,424,000 $ 1,677,000 The following table shows TDRs by class and the specific reserve as of March 31, 2019 : Number of Loans Balance Specific Reserves Commercial Real estate 17 $ 8,583,000 $ 107,000 Construction 1 721,000 — Other 10 7,257,000 1,275,000 Municipal — — — Residential Term 49 8,331,000 225,000 Construction — — — Home equity line of credit 3 494,000 — Consumer — — — 80 $ 25,386,000 $ 1,607,000 As of March 31, 2020 , 22 of the loans classified as TDRs with a total balance of $3,622,000 were more than 30 days past due. Of these loans, one had been placed on TDR status in the previous 12 months. The following table shows these TDRs by class and the associated specific reserves included in the allowance for loan losses as of March 31, 2020 : Number of Loans Balance Specific Reserves Commercial Real estate 2 $ 618,000 $ — Construction — — — Other 4 540,000 131,000 Municipal — — — Residential Term 15 2,297,000 24,000 Construction — — — Home equity line of credit 1 167,000 — Consumer — — — 22 $ 3,622,000 $ 155,000 As of March 31, 2019 , 10 of the loans classified as TDRs with a total balance of $1,129,000 were more than 30 days past due. Of these loans, three had been placed on TDR status in the previous 12 months. The following table shows these TDRs by class and the associated specific reserves included in the allowance for loan losses as of March 31, 2019 : Number of Loans Balance Specific Reserves Commercial Real estate — $ — $ — Construction — — — Other 4 261,000 134,000 Municipal — — — Residential Term 5 701,000 36,000 Construction — — — Home equity line of credit 1 167,000 — Consumer — — — 10 $ 1,129,000 $ 170,000 For the three months ended March 31, 2020 , two loans were placed on TDR status. The following table shows these TDRs by class and the associated specific reserves included in the allowance for loan losses as of March 31, 2020 : Number of Loans Pre-Modification Post-Modification Outstanding Specific Reserves Commercial Real estate — $ — $ — $ — Construction — — — — Other — — — — Municipal — — — — Residential Term 2 235,000 190,000 — Construction — — — — Home equity line of credit — — — — Consumer — — — — 2 $ 235,000 $ 190,000 $ — For the three months ended March 31, 2019 , five loans were placed on TDR status. The following table shows these TDRs by class and associated specific reserves included in the allowance for loan losses as of March 31, 2019 : Number of Loans Pre-Modification Post-Modification Outstanding Specific Reserves Commercial Real estate — $ — $ — $ — Construction — — — — Other — — — — Municipal — — — — Residential Term 5 573,000 554,000 74,000 Construction — — — — Home equity line of credit — — — — Consumer — — — — 5 $ 573,000 $ 554,000 $ 74,000 As of March 31, 2020 , Management is aware of nine loans classified as TDRs that are involved in bankruptcy with an outstanding balance of $978,000 . There were also 24 loans with an outstanding balance of $2,525,000 that were classified as TDRs and on non-accrual status, of which two loans with an outstanding balance of $350,000 were in the process of foreclosure. Residential Mortgage Loans in Process of Foreclosure As of March 31, 2020 , there were 15 mortgage loans collateralized by residential real estate in the process of foreclosure with a total balance of $ 2,284,000 . This compares to 10 mortgage loans collateralized by residential real estate in the process of foreclosure with a total balance of $1,101,000 as of March 31, 2019 .

Allowance for Loan Losses

Allowance for Loan Losses	3 Months Ended
	Mar. 31, 2020
Receivables [Abstract]
Allowance for Loan Losses	Allowance for Loan Losses The Company provides for loan losses through the establishment of an allowance for loan losses which represents an estimated reserve for existing losses in the loan portfolio. A systematic methodology is used for determining the allowance that includes a quarterly review process, risk rating changes, and adjustments to the allowance. The loan portfolio is classified in eight classes and credit risk is evaluated separately in each class. Major risk characteristics relevant to each portfolio segment are as follows: Commercial Real Estate - Commercial real estate loans are impacted by factors such as competitive market forces, vacancy rates, cap rates, net operating incomes, lease renewals and overall economic demand. In addition, loans in the recreational and tourism sector can be affected by weather conditions, such as unseasonably low winter snowfalls. Commercial real estate lending also carries a higher degree of environmental risk than other real estate lending. Commercial Construction - Commercial construction loans are impacted by factors similar to those for commercial real estate loans in addition to risks related to contractor financial capacity and ability to complete a project within acceptable time frames and within budget. Commercial Other - A weakened economy, soft consumer spending, and the rising cost of labor or raw materials are examples of issues that can impact the credit quality in this segment. Municipal Loans - The overall health of the economy, including unemployment rates and housing prices, has an impact on the credit quality of this segment. Residential Real Estate Term - The overall health of the economy, including unemployment rates and housing prices, has an impact on the credit quality of this segment. Residential Real Estate Construction - Residential construction are impacted by factors similar to those for residential real estate term in addition to risks related to contractor financial capacity and ability to complete a project within acceptable time frames and within budget. Home Equity Line of Credit - The overall health of the economy, including unemployment rates and housing prices, has an impact on the credit quality of this segment. Consumer - The overall health of the economy, including unemployment rates, has an impact on the credit quality of this segment. The appropriate level of the allowance is evaluated continually based on a review of significant loans, with a particular emphasis on nonaccruing, past due, and other loans that may require special attention. Other factors include general conditions in local and national economies; loan portfolio composition and asset quality indicators; and internal factors such as changes in underwriting policies, credit administration practices, experience, ability and depth of lending management, among others. The allowance consists of four elements: (1) specific reserves for loans evaluated individually for impairment; (2) general reserves for each portfolio segment based on historical loan loss experience, (3) qualitative reserves judgmentally adjusted for local and national economic conditions, concentrations, portfolio composition, volume and severity of delinquencies and nonaccrual loans, trends of criticized and classified loans, changes in credit policies and underwriting standards, credit administration practices, and other factors as applicable for each portfolio segment; and (4) unallocated reserves. All outstanding loans are considered in evaluating the appropriateness of the allowance. A breakdown of the allowance for loan losses as of March 31, 2020 , December 31, 2019 , and March 31, 2019 , by class of financing receivable and allowance element, is presented in the following tables: As of March 31, 2020 Specific Reserves on Loans Evaluated Individually for Impairment General Reserves on Loans Based on Historical Loss Experience Reserves for Qualitative Factors Unallocated Reserves Total Reserves Commercial Real estate $ 230,000 $ 687,000 $ 2,945,000 $ — $ 3,862,000 Construction 3,000 80,000 341,000 — 424,000 Other 172,000 426,000 1,829,000 — 2,427,000 Municipal — — 29,000 — 29,000 Residential Term 233,000 300,000 693,000 — 1,226,000 Construction — 10,000 22,000 — 32,000 Home equity line of credit 296,000 168,000 548,000 — 1,012,000 Consumer 58,000 228,000 439,000 — 725,000 Unallocated — — — 2,121,000 2,121,000 $ 992,000 $ 1,899,000 $ 6,846,000 $ 2,121,000 $ 11,858,000 As of December 31, 2019 Specific Reserves on Loans Evaluated Individually for Impairment General Reserves on Loans Based on Historical Loss Experience Reserves for Qualitative Factors Unallocated Reserves Total Reserves Commercial Real estate $ 251,000 $ 729,000 $ 2,762,000 $ — $ 3,742,000 Construction — 76,000 289,000 — 365,000 Other 1,273,000 430,000 1,626,000 — 3,329,000 Municipal — — 27,000 — 27,000 Residential Term 237,000 153,000 634,000 — 1,024,000 Construction — 5,000 20,000 — 25,000 Home equity line of credit 447,000 130,000 501,000 — 1,078,000 Consumer 5,000 460,000 402,000 — 867,000 Unallocated — — — 1,182,000 1,182,000 $ 2,213,000 $ 1,983,000 $ 6,261,000 $ 1,182,000 $ 11,639,000 As of March 31, 2019 Specific Reserves on Loans Evaluated Individually for Impairment General Reserves on Loans Based on Historical Loss Experience Reserves for Qualitative Factors Unallocated Reserves Total Reserves Commercial Real estate $ 233,000 $ 790,000 $ 2,609,000 $ — $ 3,632,000 Construction — 76,000 249,000 — 325,000 Other 1,485,000 452,000 1,493,000 — 3,430,000 Municipal — — 25,000 — 25,000 Residential Term 348,000 182,000 584,000 — 1,114,000 Construction — 7,000 23,000 — 30,000 Home equity line of credit 7,000 158,000 465,000 — 630,000 Consumer 2,000 290,000 368,000 — 660,000 Unallocated — — — 1,644,000 1,644,000 $ 2,075,000 $ 1,955,000 $ 5,816,000 $ 1,644,000 $ 11,490,000 Qualitative adjustment factors are taken into consideration when determining reserve estimates. These adjustment factors are based upon Management's evaluation of various current conditions, including those listed below. • General economic conditions. • Credit quality trends with emphasis on loan delinquencies, nonaccrual levels and classified loans. • Recent loss experience in particular segments of the portfolio. • Loan volumes and concentrations, including changes in mix. • Other factors, including changes in quality of the loan origination; loan policy changes; changes in credit risk management processes; Bank regulatory and external loan review examination results. Qualitative factors applied to the portfolio or segments of the portfolio may include judgments concerning general economic conditions that may affect credit quality, credit concentrations, the pace of portfolio growth, the direction of risk rating movements, policy exception levels, and delinquency levels; these qualitative factors are also considered in connection with the unallocated portion of our allowance for loan losses. The qualitative portion of the allowance for loan losses was 0.51% of related loans as of March 31, 2020 , compared to 0.48% of related loans as of December 31, 2019 . The qualitative portion increased $585,000 between December 31, 2019 and March 31, 2020 due to a mix of factors, including initial macroeconomic impacts of the COVID-19 pandemic. The unallocated component of the allowance totaled $2,121,000 at March 31, 2020 , or 17.9% of the total reserve. This compares to $1,182,000 or 10.2% as of December 31, 2019 . The change supports general imprecision related to portfolio growth and supports general economic uncertainty resulting from the COVID-19 pandemic. The beginnings of COVID-19's impact upon the economy are captured in several factors considered in the qualitative portion of the reserve, however the depth and duration of the economic impact is unknown. Consequently, it is likely that there are underlying credit risks that have not yet surfaced in the loan specific or qualitative metrics the Company uses to estimate its allowance for loan losses, supporting an increase in the unallocated component. The allowance for loan losses as a percent of total loans stood at 0.88% as of March 31, 2020 , 0.90% at December 31, 2019 and 0.91% as of March 31, 2019 . Commercial loans are comprised of three major classes, commercial real estate loans, commercial construction loans and other commercial loans. Commercial real estate loans consist of mortgage loans to finance investments in real property such as multi-family residential, commercial/retail, office, industrial, hotels, educational and other specific or mixed use properties. Commercial real estate loans are typically written with amortizing payment structures. Collateral values are determined based on appraisals and evaluations in accordance with established policy and regulatory guidelines. Commercial real estate loans typically have a loan-to-value ratio of up to 80% based upon current valuation information at the time the loan is made. Commercial real estate loans are primarily paid by the cash flow generated from the real property, such as operating leases, rents, or other operating cash flows from the borrower. Commercial construction loans consist of loans to finance construction in a mix of owner- and non-owner occupied commercial real estate properties. Commercial construction loans typically have maturities of less than two years. Payment structures during the construction period are typically on an interest only basis, although principal payments may be established depending on the type of construction project being financed. During the construction phase, commercial construction loans are primarily paid by cash flow generated from the construction project or other operating cash flows from the borrower or guarantors, if applicable. At the end of the construction period, loan repayment typically comes from a third party source in the event that the Company will not be providing permanent term financing. Collateral valuation and loan-to-value guidelines follow those for commercial real estate loans. Other commercial loans consist of revolving and term loan obligations extended to business and corporate enterprises for the purpose of financing working capital and or capital investment. Collateral generally consists of pledges of business assets including, but not limited to, accounts receivable, inventory, plant and equipment, and/or real estate, if applicable. Commercial loans are primarily paid by the operating cash flow of the borrower. Commercial loans may be secured or unsecured. Municipal loans are comprised of loans to municipalities in Maine for capitalized expenditures, construction projects or tax anticipation notes. All municipal loans are considered general obligations of the municipality and are collateralized by the taxing ability of the municipality for repayment of debt. Residential loans are comprised of two classes: term loans and construction loans. Residential term loans consist of residential real estate loans held in the Company's loan portfolio made to borrowers who demonstrate the ability to make scheduled payments with full consideration to underwriting factors. Borrower qualifications include favorable credit history combined with supportive income requirements and loan-to-value ratios within established policy and regulatory guidelines. Collateral values are determined based on appraisals and evaluations in accordance with established policy and regulatory guidelines. Residential loans typically have a loan-to-value ratio of up to 80% based on appraisal information at the time the loan is made. Collateral consists of mortgage liens on one- to four-family residential properties. Loans are offered with fixed or adjustable rates with amortization terms of up to thirty years . Residential construction loans typically consist of loans for the purpose of constructing single family residences to be owned and occupied by the borrower. Borrower qualifications include favorable credit history combined with supportive income requirements and loan-to-value ratios within established policy and regulatory guidelines. Residential construction loans normally have construction terms of one year or less and payment during the construction term is typically on an interest only basis from sources including interest reserves, borrower liquidity and/or income. Residential construction loans will typically convert to permanent financing from the Company or have another financing commitment in place from an acceptable mortgage lender. Collateral valuation and loan-to-value guidelines are consistent with those for residential term loans. Home equity lines of credit are made to qualified individuals and are secured by senior or junior mortgage liens on owner occupied one- to four-family homes, condominiums, or vacation homes. The home equity line of credit typically has a variable interest rate and is billed as interest-only payments during the draw period. At the end of the draw period, the home equity line of credit is billed as a percentage of the principal balance plus all accrued interest. Loan maturities are normally 300 months. Borrower qualifications include favorable credit history combined with supportive income requirements and combined loan-to- value ratios usually not exceeding 80% inclusive of priority liens. Collateral valuation guidelines follow those for residential real estate loans. Consumer loan products including personal lines of credit and amortizing loans made to qualified individuals for various purposes such as auto, recreational vehicles, debt consolidation, personal expenses or overdraft protection. Borrower qualifications include favorable credit history combined with supportive income and collateral requirements within established policy guidelines. Consumer loans may be secured or unsecured. Construction, land and land development loans, both commercial and residential, comprise a small portion of the portfolio, and at 30.6% of capital are below the regulatory guidance limit of 100.0% of capital at March 31, 2020 . Construction loans and non-owner-occupied commercial real estate loans are at 126.5% of total capital, below the regulatory limit of 300.0% of capital at March 31, 2020 . The process of establishing the allowance with respect to the commercial loan portfolio begins when a Loan Officer or Senior Officer (or designate) initially assigns each loan a risk rating, using established credit criteria. Approximately 60% of a trailing four quarter average gross commercial portfolio is subject to review and validation annually by an independent consulting firm. Additionally, commercial loan relationships with exposure greater than or equal to $500,000 are subject to review annually by the Company's internal credit review function. The methodology employs Management's judgment as to the level of losses on existing loans based on internal review of the loan portfolio, including an analysis of a borrower's current financial position, and the consideration of current and anticipated economic conditions and their potential effects on specific borrowers and or lines of business. In determining the Company's ability to collect certain loans, Management also considers the fair value of underlying collateral. The risk rating system has eight levels, defined as follows: 1 Strong Credits rated "1" are characterized by borrowers fully responsible for the credit with excellent capacity to pay principal and interest. Loans rated "1" may be secured with acceptable forms of liquid collateral. 2 Above Average Credits rated "2" are characterized by borrowers that have better than average liquidity, capitalization, earnings and/or cash flow with a consistent record of solid financial performance. 3 Satisfactory Credits rated "3" are characterized by borrowers with favorable liquidity, profitability and financial condition with adequate cash flow to pay debt service. 4 Average Credits rated "4" are characterized by borrowers that present risk more than 1, 2 and 3 rated loans and merit an ordinary level of ongoing monitoring. Financial condition is on par or somewhat below industry averages while cash flow is generally adequate to meet debt service requirements. 5 Watch Credits rated "5" are characterized by borrowers that warrant greater monitoring due to financial condition or unresolved and identified risk factors. 6 Other Assets Especially Mentioned (OAEM) Loans in this category are currently protected but are potentially weak and constitute an undue and unwarranted credit risk, but not to the point of justifying a classification of substandard. OAEM have potential weaknesses which may, if not checked or corrected, weaken the asset or inadequately protect the Company's credit position at some future date. 7 Substandard Loans in this category are inadequately protected by the paying capacity of the borrower or of the collateral pledged, if any. Loans so classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. Substandard loans are characterized by the distinct possibility that the Company may sustain some loss if the deficiencies are not corrected. 8 Doubtful Loans classified "Doubtful" have the same weaknesses as those classified substandard with the added characteristic that the weaknesses make collection or liquidation in full, based on currently existing facts, conditions, and values, highly questionable and improbable. The possibility of loss is high, but because of certain important and reasonably specific pending factors which may work to the advantage and strengthening of the asset, its classification as an estimated loss is deferred until its more exact status may be determined. The following table summarizes the risk ratings for the Company's commercial real estate, commercial construction, commercial other, and municipal loans as of March 31, 2020 : Commercial Real Estate Commercial Construction Commercial Other Municipal Loans All Risk- Rated Loans 1 Strong $ — $ — $ 4,559,000 $ 28,000 $ 4,587,000 2 Above Average 10,222,000 842,000 5,933,000 40,340,000 57,337,000 3 Satisfactory 83,905,000 1,873,000 40,255,000 372,000 126,405,000 4 Average 203,263,000 26,029,000 131,664,000 2,797,000 363,753,000 5 Watch 68,618,000 14,702,000 46,357,000 — 129,677,000 6 OAEM 1,834,000 — 2,824,000 — 4,658,000 7 Substandard 14,911,000 467,000 6,304,000 — 21,682,000 8 Doubtful — — — — — Total $ 382,753,000 $ 43,913,000 $ 237,896,000 $ 43,537,000 $ 708,099,000 The following table summarizes the risk ratings for the Company's commercial real estate, commercial construction, commercial other, and municipal loans as of December 31, 2019 : Commercial Real Estate Commercial Construction Commercial Other Municipal Loans All Risk- Rated Loans 1 Strong $ — $ — $ 4,258,000 $ 32,000 $ 4,290,000 2 Above Average 12,393,000 794,000 6,187,000 38,290,000 57,664,000 3 Satisfactory 74,709,000 2,305,000 41,527,000 379,000 118,920,000 4 Average 205,510,000 19,017,000 107,389,000 2,587,000 334,503,000 5 Watch 63,582,000 15,488,000 47,152,000 — 126,222,000 6 OAEM 1,160,000 — 1,988,000 — 3,148,000 7 Substandard 15,456,000 480,000 10,272,000 — 26,208,000 8 Doubtful — — — — — Total $ 372,810,000 $ 38,084,000 $ 218,773,000 $ 41,288,000 $ 670,955,000 The following table summarizes the risk ratings for the Company's commercial real estate, commercial construction, commercial other, and municipal loans as of March 31, 2019 : Commercial Real Estate Commercial Construction Commercial Other Municipal Loans All Risk- Rated Loans 1 Strong $ — $ — $ 3,630,000 $ 43,000 $ 3,673,000 2 Above Average 10,097,000 36,000 4,447,000 51,806,000 66,386,000 3 Satisfactory 82,595,000 2,352,000 43,963,000 450,000 129,360,000 4 Average 179,290,000 23,267,000 89,825,000 1,947,000 294,329,000 5 Watch 63,503,000 8,290,000 50,619,000 — 122,412,000 6 OAEM 2,847,000 — 1,993,000 — 4,840,000 7 Substandard 19,305,000 286,000 10,985,000 — 30,576,000 8 Doubtful 123,000 — — — 123,000 Total $ 357,760,000 $ 34,231,000 $ 205,462,000 $ 54,246,000 $ 651,699,000 Commercial loans are generally charged off when all or a portion of the principal amount is determined to be uncollectible. This determination is based on circumstances specific to a borrower including repayment ability, analysis of collateral and other factors as applicable. Residential loans are comprised of two classes: term loans, which include traditional amortizing home mortgages, and construction loans, which include loans for owner-occupied residential construction. Residential loans typically have a 75% to 80% loan to value based upon current appraisal information at the time the loan is made. Home equity loans and lines of credit are typically written to the same underwriting standards. Consumer loans are primarily amortizing loans to individuals collateralized by automobiles, pleasure craft and recreation vehicles, typically with a maximum loan to value of 80% to 90% of the purchase price of the collateral. Consumer loans also include a small amount of unsecured short-term time notes to individuals. Residential loans, consumer loans and home equity lines of credit are segregated into homogeneous pools with similar risk characteristics. Trends and current conditions are analyzed and historical loss experience is adjusted accordingly. Quantitative and qualitative adjustment factors for these segments are consistent with those for the commercial and municipal classes. Certain loans in the residential, home equity lines of credit and consumer classes identified as having the potential for further deterioration are analyzed individually to confirm impairment status, and to determine the need for a specific reserve; however there is no formal rating system used for these classes. Consumer loans greater than 120 days past due are generally charged off. Residential loans 90 days or more past due are placed on non-accrual status unless the loans are both well secured and in the process of collection. One- to four-family residential real estate loans and home equity loans are written down or charged-off no later than 180 days past due, or for residential real estate secured loans having a borrower in bankruptcy, within 60 days of receipt of notification of filing from the bankruptcy court, whichever is sooner. This is subject to completion of a current assessment of the value of the collateral with any outstanding loan balance in excess of the fair value of the property, less costs to sell, written down or charged-off. There were no changes to the Company's accounting policies or methodology used to estimate the allowance for loan losses during the three months ended March 31, 2020 . The following table presents allowance for loan losses activity by class for the three months ended March 31, 2020 , and allowance for loan loss balances by class and related loan balances by class as of March 31, 2020 : Commercial Municipal Residential Home Equity Line of Credit Consumer Unallocated Total Real Estate Construction Other Term Construction For the three months ended March 31, 2020 Beginning balance $ 3,742,000 $ 365,000 $ 3,329,000 $ 27,000 $ 1,024,000 $ 25,000 $ 1,078,000 $ 867,000 $ 1,182,000 $ 11,639,000 Charge offs — — — — 2,000 — 153,000 100,000 — 255,000 Recoveries — — 20,000 — 10,000 — 1,000 43,000 — 74,000 Provision (credit) 120,000 59,000 (922,000 ) 2,000 194,000 7,000 86,000 (85,000 ) 939,000 400,000 Ending balance $ 3,862,000 $ 424,000 $ 2,427,000 $ 29,000 $ 1,226,000 $ 32,000 $ 1,012,000 $ 725,000 $ 2,121,000 $ 11,858,000 Allowance for loan losses as of March 31, 2020 Ending balance specifically evaluated for impairment $ 230,000 $ 3,000 $ 172,000 $ — $ 233,000 $ — $ 296,000 $ 58,000 $ — $ 992,000 Ending balance collectively evaluated for impairment $ 3,632,000 $ 421,000 $ 2,255,000 $ 29,000 $ 993,000 $ 32,000 $ 716,000 $ 667,000 $ 2,121,000 $ 10,866,000 Related loan balances as of March 31, 2020 Ending balance $ 382,753,000 $ 43,913,000 $ 237,896,000 $ 43,537,000 $ 500,971,000 $ 15,202,000 $ 90,674,000 $ 29,262,000 $ — $ 1,344,208,000 Ending balance specifically evaluated for impairment $ 6,223,000 $ 947,000 $ 990,000 $ — $ 12,038,000 $ — $ 2,228,000 $ 67,000 $ — $ 22,493,000 Ending balance collectively evaluated for impairment $ 376,530,000 $ 42,966,000 $ 236,906,000 $ 43,537,000 $ 488,933,000 $ 15,202,000 $ 88,446,000 $ 29,195,000 $ — $ 1,321,715,000 The following table presents allowance for loan losses activity by class for the year ended December 31, 2019 and allowance for loan loss balances by class and related loan balances by class as of December 31, 2019 : Commercial Municipal Residential Home Equity Line of Credit Consumer Unallocated Total Real Estate Construction Other Term Construction For the year ended December 31, 2019 Beginning balance $ 3,567,000 $ 255,000 $ 3,541,000 $ 24,000 $ 1,235,000 $ 34,000 $ 730,000 $ 630,000 $ 1,216,000 $ 11,232,000 Charge offs 89,000 — 179,000 — 445,000 — 69,000 338,000 — 1,120,000 Recoveries 15,000 — 73,000 — 57,000 — 4,000 128,000 — 277,000 Provision (credit) 249,000 110,000 (106,000 ) 3,000 177,000 (9,000 ) 413,000 447,000 (34,000 ) 1,250,000 Ending balance $ 3,742,000 $ 365,000 $ 3,329,000 $ 27,000 $ 1,024,000 $ 25,000 $ 1,078,000 $ 867,000 $ 1,182,000 $ 11,639,000 Allowance for loan losses as of December 31, 2019 Ending balance specifically evaluated for impairment $ 251,000 $ — $ 1,273,000 $ — $ 237,000 $ — $ 447,000 $ 5,000 $ — $ 2,213,000 Ending balance collectively evaluated for impairment $ 3,491,000 $ 365,000 $ 2,056,000 $ 27,000 $ 787,000 $ 25,000 $ 631,000 $ 862,000 $ 1,182,000 $ 9,426,000 Related loan balances as of December 31, 2019 Ending balance $ 372,810,000 $ 38,084,000 $ 218,773,000 $ 41,288,000 $ 492,455,000 $ 14,813,000 $ 92,349,000 $ 26,503,000 $ — $ 1,297,075,000 Ending balance specifically evaluated for impairment $ 6,309,000 $ 958,000 $ 7,075,000 $ — $ 12,439,000 $ — $ 2,488,000 $ 5,000 $ — $ 29,274,000 Ending balance collectively evaluated for impairment $ 366,501,000 $ 37,126,000 $ 211,698,000 $ 41,288,000 $ 480,016,000 $ 14,813,000 $ 89,861,000 $ 26,498,000 $ — $ 1,267,801,000 The following table presents allowance for loan losses activity by class for the three months ended March 31, 2019 , and allowance for loan loss balances by class and related loan balances by class as of March 31, 2019 : Commercial Municipal Residential Home Equity Line of Credit Consumer Unallocated Total Real Estate Construction Other Term Construction For the three months ended March 31, 2019 Beginning balance $ 3,567,000 $ 255,000 $ 3,541,000 $ 24,000 $ 1,235,000 $ 34,000 $ 730,000 $ 630,000 $ 1,216,000 $ 11,232,000 Charge offs — — 1,000 — 49,000 — 38,000 63,000 — 151,000 Recoveries 8,000 — 1,000 — 3,000 — 1,000 21,000 — 34,000 Provision (credit) 57,000 70,000 (111,000 ) 1,000 (75,000 ) (4,000 ) (63,000 ) 72,000 428,000 375,000 Ending balance $ 3,632,000 $ 325,000 $ 3,430,000 $ 25,000 $ 1,114,000 $ 30,000 $ 630,000 $ 660,000 $ 1,644,000 $ 11,490,000 Allowance for loan losses as of March 31, 2019 Ending balance specifically evaluated for impairment $ 233,000 $ — $ 1,485,000 $ — $ 348,000 $ — $ 7,000 $ 2,000 $ — $ 2,075,000 Ending balance collectively evaluated for impairment $ 3,399,000 $ 325,000 $ 1,945,000 $ 25,000 $ 766,000 $ 30,000 $ 623,000 $ 658,000 $ 1,644,000 $ 9,415,000 Related loan balances as of March 31, 2019 Ending balance $ 357,760,000 $ 34,231,000 $ 205,462,000 $ 54,246,000 $ 474,241,000 $ 18,450,000 $ 95,692,000 $ 24,557,000 $ — $ 1,264,639,000 Ending balance specifically evaluated for impairment $ 9,957,000 $ 1,007,000 $ 7,653,000 $ — $ 10,919,000 $ — $ 1,030,000 $ 2,000 $ — $ 30,568,000 Ending balance collectively evaluated for impairment $ 347,803,000 $ 33,224,000 $ 197,809,000 $ 54,246,000 $ 463,322,000 $ 18,450,000 $ 94,662,000 $ 24,555,000 $ — $ 1,234,071,000

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2020
Share-based Payment Arrangement [Abstract]
Stock-Based Compensation	Stock-Based Compensation At the 2010 Annual Meeting, shareholders approved the 2010 Equity Incentive Plan (the "2010 Plan"). This reserves 400,000 shares of common stock for issuance in connection with stock options, restricted stock awards and other equity based awards to attract and retain the best available personnel, provide additional incentive to officers, employees and non-employee Directors and promote the success of the Company. Such grants and awards will be structured in a manner that does not encourage the recipients to expose the Company to undue or inappropriate risk. Options issued under the 2010 Plan will qualify for treatment as incentive stock options for purposes of Section 422 of the Internal Revenue Code. Other compensation under the 2010 Plan will qualify as performance-based for purposes of Section 162(m) of the Internal Revenue Code, and will satisfy NASDAQ guidelines relating to equity compensation. As of March 31, 2020 , 184,487 shares of restricted stock had been granted under the 2010 Plan, of which 71,374 shares remain restricted as of March 31, 2020 as detailed in the following table: Year Granted Vesting Term (In Years) Shares Remaining Term (In Years) 2015 5.0 527 0.3 2016 5.0 10,874 0.8 2017 5.0 7,017 1.8 2018 3.0 5,371 0.9 2018 4.0 2,068 1.8 2018 5.0 6,184 2.8 2019 2.0 1,484 0.8 2019 3.0 16,254 1.8 2020 1.0 2,309 0.8 2020 2.0 694 1.8 2020 3.0 18,592 2.8 71,374 2.0 The compensation cost related to these restricted stock grants is $1,785,000 and is recognized over the vesting terms of each grant. In the three months ended March 31, 2020 , $150,000 of expense was recognized for these restricted shares, leaving $1,087,000 in unrecognized expense as of March 31, 2020 . In the three months ended March 31, 2019 , $123,000 of expense was recognized for restricted shares, leaving $1,046,000 in unrecognized expense as of March 31, 2019 . The 2010 Plan expired on April 28, 2020. At the 2020 Annual Meeting, shareholders approved the 2020 Equity Incentive Plan (the "2020 Plan"). The 2020 Plan reserves 400,000 shares of common stock of the Company for issuance in connection with stock options, restricted stock awards and other equity based awards for the same purpose and under the same terms as the 2010 Plan. No awards have been granted to date under the 2020 Plan.

Common Stock

Common Stock	3 Months Ended
	Mar. 31, 2020
Stockholders' Equity Note [Abstract]
Common Stock	Common Stock Proceeds from sale of common stock totaled $163,000 and $168,000 for the three months ended March 31, 2020 and 2019 , respectively.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share The following table sets forth the computation of basic and diluted earnings per share (EPS) for the three months ended March 31, 2020 and 2019 : Income (Numerator) Shares (Denominator) Per-Share Amount For the three months ended March 31, 2020 Net income as reported $ 6,495,000 Basic EPS: Income available to common shareholders 6,495,000 10,844,600 $ 0.60 Effect of dilutive securities: restricted stock 69,753 Diluted EPS: Income available to common shareholders plus assumed conversions $ 6,495,000 10,914,353 $ 0.60 For the three months ended March 31, 2019 Net income as reported $ 6,156,000 Basic EPS: Income available to common shareholders 6,156,000 10,802,782 $ 0.57 Effect of dilutive securities: restricted stock 73,953 Diluted EPS: Income available to common shareholders plus assumed conversions $ 6,156,000 10,876,735 $ 0.57

Employee Benefit Plans

Employee Benefit Plans	3 Months Ended
	Mar. 31, 2020
Retirement Benefits, Description [Abstract]
Employee Benefit Plans	Employee Benefit Plans 401(k) Plan The Bank has a defined contribution plan available to substantially all employees who have completed 3 months of service. Employees may contribute up to Internal Revenue Service ("IRS") determined limits and the Bank may match employee contributions not to exceed 3.0% of compensation depending on contribution level. Subject to a vote of the Board of Directors, the Bank may also make a profit-sharing contribution to the Plan. Such contribution equaled 2.0% of each eligible employee's compensation in 2019 . The amount for 2020 has not been established. The expense related to the 401(k) plan was $255,000 and $185,000 for the three months ended March 31, 2020 and 2019 , respectively. Deferred Compensation and Supplemental Retirement Benefits The Bank also provides unfunded supplemental retirement benefits for certain officers, payable in installments over 20 years upon retirement or death. The agreements consist of individual contracts with differing characteristics that, when taken together, do not constitute a postretirement plan. The costs for these benefits are recognized over the service periods of the participating officers in accordance with Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 712 "Compensation – Nonretirement Postemployment Benefits". The expense of these supplemental retirement benefits was $40,000 for the three months ended March 31, 2020 and 2019 . As of March 31, 2020 , the associated accrued liability included in other liabilities in the balance sheet was $2,772,000 compared to $2,828,000 and $2,894,000 at December 31, 2019 and March 31, 2019 , respectively. Post-Retirement Benefit Plans The Bank sponsors two post-retirement benefit plans. One plan currently provides a subsidy for health insurance premiums to certain retired employees and a future subsidy for six active employees who were age 50 and over in 1996. These subsidies are based on years of service and range between $40 and $1,200 per month per person. The other plan provides life insurance coverage to certain retired employees and health insurance for retired directors. None of these plans are pre-funded. The Company utilizes FASB ASC Topic 712 to recognize the overfunded or underfunded status of a defined benefit postretirement plan as an asset or liability in its balance sheet and to recognize changes in the funded status in the year in which the changes occur through comprehensive income (loss). The following table sets forth the accumulated postretirement benefit obligation and funded status: At or for the three months ended March 31, 2020 2019 Change in benefit obligation Benefit obligation at beginning of year $ 1,581,000 $ 1,599,000 Interest cost 16,000 17,000 Benefits paid (27,000 ) (28,000 ) Benefit obligation at end of period $ 1,570,000 $ 1,588,000 Funded status Benefit obligation at end of period $ (1,570,000 ) $ (1,588,000 ) Unamortized gain (31,000 ) (47,000 ) Accrued benefit cost at end of period $ (1,601,000 ) $ (1,635,000 ) The following table sets forth the net periodic pension cost: For the three months ended March 31, 2020 2019 Components of net periodic benefit cost Interest cost $ 16,000 $ 17,000 Net periodic benefit cost $ 16,000 $ 17,000 Amounts not yet reflected in net periodic benefit cost and included in accumulated other comprehensive income are as follows: March 31, December 31, 2019 March 31, Unamortized net actuarial gain $ 31,000 $ 31,000 $ 47,000 Deferred tax expense (7,000 ) (7,000 ) (10,000 ) Net unrecognized postretirement benefits included in accumulated other comprehensive income $ 24,000 $ 24,000 $ 37,000 A weighted average discount rate of 3.00% was used in determining the accumulated benefit obligation and the net periodic benefit cost. The assumed health care cost trend rate is 7.0% . The measurement date for benefit obligations was as of year-end for prior years presented. The expected benefit payments for all of 2020 are $108,000 . Plan expense for 2020 is estimated to be $64,000 . A 1% change in trend assumptions would create an approximate change in the same direction of $100,000 in the accumulated benefit obligation, $7,000 in the interest cost and $1,000 in the service cost.

Other Comprehensive Income (Los

Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Other Comprehensive Income (Loss)	Other Comprehensive Income (Loss) The following table summarizes activity in the unrealized gain or loss on available for sale securities included in other comprehensive income (loss) for the three months ended March 31, 2020 and 2019 . For the three months ended March 31, 2020 2019 Balance at beginning of period $ 3,657,000 $ (5,051,000 ) Unrealized gains arising during the period 6,109,000 4,446,000 Reclassification of net realized gains during the period (752,000 ) — Related deferred taxes (1,124,000 ) (934,000 ) Net change 4,233,000 3,512,000 Balance at end of period $ 7,890,000 $ (1,539,000 ) The reclassification of realized gains is included in the net securities gains line of the consolidated statements of income and comprehensive income and the tax effect is included in the income tax expense line of the same statement. The following table summarizes activity in the unrealized loss on securities transferred from available for sale to held to maturity included in other comprehensive income (loss) for the three months ended March 31, 2020 and 2019 . For the three months ended March 31, 2020 2019 Balance at beginning of period $ (182,000 ) $ (197,000 ) Amortization of net unrealized gains 10,000 4,000 Related deferred taxes (2,000 ) (1,000 ) Net change 8,000 3,000 Balance at end of period $ (174,000 ) $ (194,000 ) The following table presents the effect of the Company's derivative financial instruments included in other comprehensive income (loss) for the three months ended March 31, 2020 and 2019 . For the three months ended March 31, 2020 2019 Balance at beginning of period $ 97,000 $ 1,438,000 Unrealized losses on cash flow hedging derivatives arising during the period (6,165,000 ) (589,000 ) Related deferred taxes 1,295,000 124,000 Net change (4,870,000 ) (465,000 ) Balance at end of period $ (4,773,000 ) $ 973,000 The following table summarizes activity in the unrealized gain or loss on postretirement benefits included in other comprehensive income (loss) for the three months ended March 31, 2020 and 2019 . For the three months ended March 31, 2020 2019 Unrecognized postretirement benefits at beginning of period $ 24,000 $ 37,000 Amortization of unrecognized transition obligation — — Change in unamortized net actuarial gain (loss) — — Related deferred taxes — — Unrecognized postretirement benefits at end of period $ 24,000 $ 37,000

Financial Derivative Instrument

Financial Derivative Instruments	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Financial Derivative Instruments	Financial Derivative Instruments The Bank uses derivative financial instruments for risk management purposes and not for trading or speculative purposes. As part of its overall asset and liability management strategy, the Bank periodically uses derivative instruments to minimize significant unplanned fluctuations in earnings and cash flows caused by interest rate volatility. The Bank’s interest rate risk management strategy involves modifying the re-pricing characteristics of certain assets or liabilities so that changes in interest rates do not have a significant effect on net interest income. The Bank recognizes its derivative instruments in the consolidated balance sheet at fair value. On the date the derivative instrument is entered into, the Bank designates whether the derivative is part of a hedging relationship (i.e., cash flow or fair value hedge). The Bank formally documents relationships between hedging instruments and hedged items, as well as its risk management objective and strategy for undertaking hedge transactions. The Bank also assesses, both at the hedge’s inception and on an ongoing basis, whether the derivatives used in hedging transactions are highly effective in offsetting the changes in cash flows or fair values of hedged items. Changes in fair value of derivative instruments that are highly effective and qualify as cash flow hedges are recorded in other comprehensive income or loss. Any ineffective portion is recorded in earnings. The Bank discontinues hedge accounting when it is determined that the derivative is no longer highly effective in offsetting changes of the hedged risk on the hedged item, or management determines that the designation of the derivative as a hedging instrument is no longer appropriate. The details of the interest rate swap agreements are as follows: March 31, 2020 December 31, 2019 March 31, 2019 Effective Date Maturity Date Variable Index Received Fixed Rate Paid Presentation on Consolidated Balance Sheet Notional Amount Fair Value Notional Amount Fair Value Notional Amount Fair Value 06/05/2018 12/05/2019 1-Month USD LIBOR 2.466 % Other Liabilities $ — $ — $ — $ — $ 25,000,000 $ (7,000 ) 06/27/2016 06/27/2021 1-Month USD LIBOR 0.893 % Other (Liabilities) Assets 20,000,000 (151,000 ) 20,000,000 199,000 20,000,000 586,000 06/28/2016 06/28/2021 1-Month USD LIBOR 0.940 % Other (Liabilities) Assets 30,000,000 (244,000 ) 30,000,000 278,000 30,000,000 847,000 06/05/2018 06/05/2020 1-Month USD LIBOR 2.547 % Other Liabilities — — 25,000,000 (96,000 ) 25,000,000 (57,000 ) 06/05/2018 12/05/2020 1-Month USD LIBOR 2.603 % Other Liabilities — — 25,000,000 (234,000 ) 25,000,000 (137,000 ) 12/05/2019 12/05/2022 3-Month USD LIBOR 1.779 % Other Liabilities — — 25,000,000 (98,000 ) — — 08/02/2019 08/02/2024 1-Month USD LIBOR 1.590 % Other Liabilities 12,500,000 (663,000 ) 12,500,000 (11,000 ) — — 08/05/2019 08/05/2024 1-Month USD LIBOR 1.420 % Other (Liabilities) Assets 12,500,000 (571,000 ) 12,500,000 85,000 — — 02/12/2020 02/12/2023 3-Month USD LIBOR 1.486 % Other Liabilities 25,000,000 (748,000 ) — — — — 02/12/2020 02/12/2024 3-Month USD LIBOR 1.477 % Other Liabilities 25,000,000 (972,000 ) — — — — 06/28/2021 06/28/2026 1-Month USD LIBOR 1.158 % Other Liabilities 50,000,000 (1,569,000 ) — — — — 03/13/2020 03/13/2025 3-Month USD LIBOR 0.855 % Other Liabilities 25,000,000 (463,000 ) — — — — 03/13/2020 03/13/2030 3-Month USD LIBOR 1.029 % Other Liabilities 20,000,000 (661,000 ) — — — — $ 220,000,000 $ (6,042,000 ) $ 150,000,000 $ 123,000 $ 125,000,000 1,232,000 During the first quarter of 2020, the Bank took advantage of market opportunities to restructure several interest rate swap positions and extend funding at favorable interest rates; one-time charges totaling $1.76 million were incurred and expensed in the quarter in connection with the restructuring. The Company would reclassify unrealized gains or losses accounted for within accumulated other comprehensive income (loss) into earnings if the interest rate swaps were to become ineffective or the swaps were to terminate. In the next 12 months, the Company does not believe it will be required to reclassify any unrealized gains or losses accounted for within accumulated other comprehensive income (loss) into earnings as a result of ineffectiveness or swap termination. Amounts paid or received under the swaps are reported in interest expense in the statement of income, and in interest paid in the statement of cash flows. Customer loan derivatives The Bank will enter into interest rate swaps with qualified commercial customers. Through these arrangements, the Bank is able to provide a means for a loan customer to obtain a long-term fixed rate, while it simultaneously contracts with an approved, highly-rated, third-party financial institution as counterparty to swap the fixed rate for a variable rate. Such loan level arrangements are not designated as hedges for accounting purposes, and are recorded at fair value in the Company’s consolidated balance sheet. At March 31, 2020 there were two customer loan swap arrangements in place, detailed below: March 31, 2020 December 31, 2019 March 31, 2019 Presentation on Consolidated Balance Sheet Number of Positions Notional Amount Fair Value Number of Positions Notional Amount Fair Value Number of Positions Notional Amount Fair Value Pay Fixed, Receive Variable Other Liabilities 2 $ 16,394,000 $ (3,280,000 ) 2 $ 16,374,000 $ (1,205,000 ) — $ — $ — Receive Fixed, Pay Variable Other Assets 2 16,394,000 3,280,000 2 16,374,000 1,205,000 — — — Total 4 $ 32,588,000 $ — 4 $ 32,748,000 $ — — $ — $ — Derivative collateral The Bank has entered into a master netting arrangement with its counterparty and settles payments with the counterparty as necessary. The Bank's arrangement with its institutional counterparty requires it to post cash or other assets as collateral for its various loan swap contracts in a net liability position based on their fair values and the Bank's credit rating or receive cash collateral for contracts in a net asset position as requested. At March 31, 2020 , the Bank posted to the counterparty $3,100,000 of cash and $10,000,000 in securities as collateral on its swap contracts. The required amount to be pledged was $ 9,322,000 . Cessation of LIBOR The Company is aware that LIBOR may no longer be published after December 31, 2021. The International Swap and Derivatives Association ("ISDA"), the organization that oversees and guides swap and derivatives markets and participants, continues to work on transitions and replacement rates, including having replacement rates in place before the possible cessation of LIBOR at the end of 2021, and has committed to providing more definitive recommendations later in 2020. The Bank intends to continue to monitor these developments closely and expects to pursue the steps ultimately recommended by ISDA to provide for an orderly transition to a post-LIBOR environment. Of the interest rate swap contracts the Bank has in place as of March 31, 2020 , two contracts carrying a total notional amount of $50 million are set to mature prior to December 31, 2021; seven contracts with a total notional amount of $170 million have maturity dates beyond December 31, 2021. The two customer loan swap contracts shown in the table immediately above have maturity dates of December 19, 2029 and October 1, 2039.

Mortgage Servicing Rights

Mortgage Servicing Rights	3 Months Ended
	Mar. 31, 2020
Transfers and Servicing [Abstract]
Mortgage Servicing Rights	Mortgage Servicing Rights FASB ASC Topic 860 "Transfers and Servicing" requires all separately recognized servicing assets and servicing liabilities to be initially measured at fair value, if practicable. The Company's servicing assets and servicing liabilities are reported using the amortization method and carried at the lower of amortized cost or fair value by strata. In evaluating the carrying values of mortgage servicing rights, the Company obtains third party valuations based on loan level data including note rate, type and term of the underlying loans. The model utilizes several assumptions, the most significant of which is loan prepayments, calculated using a three -months moving average of weekly prepayment data published by the Public Securities Association (PSA) and modeled against the serviced loan portfolio, and the discount rate to discount future cash flows. As of March 31, 2020 , the prepayment assumption using the PSA model was 209 , which translates into an anticipated prepayment rate of 12.54% . The discount rate is 9.00% . Other assumptions include delinquency rates, foreclosure rates, servicing cost inflation, and annual unit loan cost. All assumptions are adjusted periodically to reflect current circumstances. Amortization of mortgage servicing rights, as well as write-offs due to prepayments of the related mortgage loans, are recorded as a charge against mortgage servicing fee income. For the three months ended March 31, 2020 and 2019 , servicing rights capitalized totaled $129,000 and $58,000 , respectively. Servicing rights amortized for the three-month periods ended March 31, 2020 and 2019 were $66,000 and $56,000 , respectively. The fair value of servicing rights was $2,126,000 , $2,089,000 and $2,410,000 at March 31, 2020 , December 31, 2019 and March 31, 2019 , respectively. The Bank serviced loans for others totaling $268,077,000 , $266,173,000 and $260,553,000 at March 31, 2020 , December 31, 2019 , and March 31, 2019 , respectively. Mortgage servicing rights are included in other assets and detailed in the following table: March 31, December 31, March 31, Mortgage servicing rights $ 6,269,000 $ 6,140,000 $ 5,776,000 Accumulated amortization (4,660,000 ) (4,594,000 ) (4,420,000 ) $ 1,609,000 $ 1,546,000 $ 1,356,000

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes FASB ASC Topic 740 "Income Taxes" defines the criteria that an individual tax position must satisfy for some or all of the benefits of that position to be recognized in a company's financial statements. Topic 740 prescribes a recognition threshold of more-likely-than-not, and a measurement attribute for all tax positions taken or expected to be taken on a tax return, in order for those tax positions to be recognized in the financial statements. The Company is currently open to audit under the statute of limitations by the IRS for the years ended December 31, 2016 through 2019.

Certificates of Deposit

Certificates of Deposit	3 Months Ended
	Mar. 31, 2020
Banking and Thrift [Abstract]
Certificates of Deposit	Certificates of Deposit The following table represents the breakdown of certificates of deposit at March 31, 2020 and 2019 , and at December 31, 2019 : March 31, 2020 December 31, 2019 March 31, 2019 Certificates of deposit < $100,000 $ 274,621,000 $ 277,225,000 $ 398,689,000 Certificates $100,000 to $250,000 364,530,000 345,241,000 238,429,000 Certificates $250,000 and over 71,787,000 67,513,000 75,358,000 $ 710,938,000 $ 689,979,000 $ 712,476,000

Reclassifications

Reclassifications	3 Months Ended
	Mar. 31, 2020
Accounting Changes and Error Corrections [Abstract]
Reclassifications	Reclassifications Certain items from the prior year were reclassified in the financial statements to conform with the current year presentation. These do not have a material impact on the consolidated balance sheet or statement of income and comprehensive income presentations.

Fair Value

Fair Value	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value	Fair Value Certain assets and liabilities are recorded at fair value to provide additional insight into the Company's quality of earnings. Some of these assets and liabilities are measured on a recurring basis while others are measured on a nonrecurring basis, with the determination based upon applicable existing accounting pronouncements. For example, securities available for sale are recorded at fair value on a recurring basis. Other assets, such as, other real estate owned and impaired loans, are recorded at fair value on a nonrecurring basis using the lower of cost or market methodology to determine impairment of individual assets. The Company groups assets and liabilities which are recorded at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. A financial instrument's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement (with level 1 considered highest and level 3 considered lowest). A brief description of each level follows: Level 1 - Valuation is based upon quoted prices for identical instruments in active markets. Level 2 - Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. Level 3 - Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates that market participants would use in pricing the asset or liability. Valuation includes use of discounted cash flow models and similar techniques. The fair value methods and assumptions for the Company's financial instruments and other assets measured at fair value are set forth below. Investment Securities The fair values of investment securities are estimated by independent providers using a market approach with observable inputs, including matrix pricing and recent transactions. In obtaining such valuation information from third parties, the Company has evaluated their valuation methodologies used to develop the fair values in order to determine whether the valuations are representative of an exit price in the Company's principal markets. The Company's principal markets for its securities portfolios are the secondary institutional markets, with an exit price that is predominantly reflective of bid level pricing in those markets. Fair values are calculated based on the value of one unit without regard to any premium or discount that may result from concentrations of ownership of a financial instrument, possible tax ramifications, or estimated transaction costs. If these considerations had been incorporated into the fair value estimates, the aggregate fair value could have been changed. Loans Fair values are estimated for portfolios of loans based on exit pricing notion. The fair values of performing loans are calculated by discounting scheduled cash flows through the estimated maturity using estimated market discount rates that reflect the credit and interest risk inherent in the loan. The estimates of maturity are based on the Company's historical experience with repayments for each loan classification, modified, as required, by an estimate of the effect of current economic and lending conditions, and the effects of estimated prepayments. Assumptions regarding credit risk, cash flows, and discount rates are judgmentally determined using available market information and specific borrower information. Management has made estimates of fair value using discount rates that it believes to be reasonable. However, because there is no market for many of these financial instruments, Management has no basis to determine whether the fair value presented above would be indicative of the value negotiated in an actual sale. As such, the Company classifies loans as Level 3, except for certain collateral-dependent impaired loans. Fair values of impaired loans are based on estimated cash flows and are discounted using a rate commensurate with the risk associated with the estimated cash flows, or if collateral dependent, discounted to the appraised value of the collateral as determined by reference to sale prices of similar properties, less costs to sell. As such, the Company classifies collateral dependent impaired loans for which a specific reserve results in a fair value measure as Level 2. All other impaired loans are classified as Level 3. Other Real Estate Owned Real estate acquired through foreclosure is initially recorded at fair value. The fair value of other real estate owned is based on property appraisals and an analysis of similar properties currently available. As such, the Company records other real estate owned as nonrecurring Level 2. Mortgage Servicing Rights Mortgage servicing rights represent the value associated with servicing residential mortgage loans. Servicing assets and servicing liabilities are reported using the amortization method and compared to fair value for impairment. In evaluating the fair values of mortgage servicing rights, the Company obtains third party valuations based on loan level data including note rate, type and term of the underlying loans. As such, the Company classifies mortgage servicing rights as Level 2. Time Deposits The fair value of maturity deposits is based on the discounted value of contractual cash flows using a replacement cost of funds approach. The discount rate is estimated using the cost of funds borrowing rate in the market. As such, the Company classifies deposits as Level 2. Borrowed Funds The fair value of borrowed funds is based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently available for borrowings of similar remaining maturities. As such, the Company classifies borrowed funds as Level 2. Derivatives The fair value of interest rate swaps is determined using inputs that are observable in the market place obtained from third parties including yield curves, publicly available volatilities, and floating indexes and, accordingly, are classified as Level 2 inputs. The credit value adjustments associated with derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by the Company and its counterparties. As of March 31, 2020 and 2019 , and December 31, 2019 , the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives due to collateral postings. Customer Loan Derivatives The valuation of the Company’s customer loan derivatives is obtained from a third-party pricing service and is determined using a discounted cash flow analysis on the expected cash flows of each derivative. The pricing analysis is based on observable inputs for the contractual terms of the derivatives, including the period to maturity and interest rate curves. The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of master netting arrangements and any applicable credit enhancements, such as collateral postings. Limitations Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. These values do not reflect any premium or discount that could result from offering for sale at one time the Company's entire holdings of a particular financial instrument. Because no market exists for a significant portion of the Company's financial instruments, fair value estimates are based on Management's judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and therefore cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Fair value estimates are based on existing on- and off-balance-sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. Other significant assets and liabilities that are not considered financial instruments include the deferred tax asset, premises and equipment, and other real estate owned. In addition, tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on fair value estimates and have not been considered in any of the estimates. Assets and Liabilities Recorded at Fair Value on a Recurring Basis The following tables present the balances of assets and liabilities that were measured at fair value on a recurring basis as of March 31, 2020 , December 31, 2019 and March 31, 2019 . At March 31, 2020 Level 1 Level 2 Level 3 Total Securities available for sale U.S. Government-sponsored agencies $ — $ 7,552,000 $ — $ 7,552,000 Mortgage-backed securities — 285,152,000 — 285,152,000 State and political subdivisions — 20,224,000 — 20,224,000 Total securities available for sale — 312,928,000 — 312,928,000 Customer loan interest swap agreements — 3,280,000 — 3,280,000 Total interest rate swap agreements $ — $ 3,280,000 $ — $ 3,280,000 Total assets $ — $ 316,208,000 $ — $ 316,208,000 At March 31, 2020 Level 1 Level 2 Level 3 Total Interest rate swap agreements $ — $ 9,322,000 $ — $ 9,322,000 Total liabilities $ — $ 9,322,000 $ — $ 9,322,000 At December 31, 2019 Level 1 Level 2 Level 3 Total Securities available for sale U.S. Government-sponsored agencies $ — $ 7,398,000 $ — $ 7,398,000 Mortgage-backed securities — 326,617,000 — 326,617,000 State and political subdivisions — 26,505,000 — 26,505,000 Total securities available for sale — 360,520,000 — 360,520,000 Interest rate swap agreements — 562,000 — 562,000 Customer loan interest swap agreements — 1,205,000 1,205,000 Total interest rate swap agreements 1,767,000 1,767,000 Total assets $ — $ 362,287,000 $ — $ 362,287,000 At December 31, 2019 Level 1 Level 2 Level 3 Total Interest rate swap agreements $ — $ 439,000 $ — $ 439,000 Customer loan interest swap agreements $ 1,205,000 $ 1,205,000 Total liabilities $ — $ 1,644,000 $ — $ 1,644,000 At March 31, 2019 Level 1 Level 2 Level 3 Total Securities available for sale U.S. Treasury and agency $ — $ 5,016,000 $ — $ 5,016,000 Mortgage-backed securities — 315,423,000 — 315,423,000 State and political subdivisions — 4,837,000 — 4,837,000 Total securities available for sale — 325,276,000 — 325,276,000 Interest rate swap agreements — 1,433,000 — 1,433,000 Total assets $ — $ 326,709,000 $ — $ 326,709,000 At March 31, 2019 Level 1 Level 2 Level 3 Total Interest rate swap agreements $ — $ 201,000 $ — $ 201,000 Total liabilities $ — $ 201,000 $ — $ 201,000 Assets Recorded at Fair Value on a Non-Recurring Basis The following tables include assets measured at fair value on a nonrecurring basis that have had a fair value adjustment since their initial recognition. Other real estate owned is presented net of an allowance of $0 at March 31, 2020 , 2019 and December 31, 2019 . Only collateral-dependent impaired loans with a related specific allowance for loan losses or a partial charge off are included in impaired loans for purposes of fair value disclosures. Impaired loans below are presented net of specific allowances of $706,000 , $1,916,000 and $1,822,000 at March 31, 2020 , December 31, 2019 , and March 31, 2019 , respectively. At March 31, 2020 Level 1 Level 2 Level 3 Total Other real estate owned $ — $ 316,000 $ — $ 316,000 Impaired loans — 1,051,000 — 1,051,000 Total assets $ — $ 1,367,000 $ — $ 1,367,000 At December 31, 2019 Level 1 Level 2 Level 3 Total Other real estate owned $ — $ 279,000 $ — $ 279,000 Impaired loans — 6,579,000 — 6,579,000 Total assets $ — $ 6,858,000 $ — $ 6,858,000 At March 31, 2019 Level 1 Level 2 Level 3 Total Other real estate owned $ — $ 584,000 $ — $ 584,000 Impaired loans — 6,519,000 — 6,519,000 Total assets $ — $ 7,103,000 $ — $ 7,103,000 Fair Value of Financial Instruments FASB ASC Topic 825 "Financial Instruments" requires disclosures of fair value information about financial instruments, whether or not recognized in the balance sheet, if the fair values can be reasonably determined. Fair value is best determined based upon quoted market prices. However, in many instances, there are no quoted market prices for the Company's various financial instruments. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques using observable inputs when available. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. Accordingly, the fair value estimates may not be realized in an immediate settlement of the instrument. Topic 825 excludes certain financial instruments and all nonfinancial instruments from its disclosure requirements. Accordingly, the aggregate fair value amounts presented may not necessarily represent the underlying fair value of the Company. This summary excludes financial assets and liabilities for which carrying value approximates fair values and financial instruments that are recorded at fair value on a recurring basis. Financial instruments for which carrying values approximate fair value include cash equivalents, interest-bearing deposits in other banks, demand, NOW, savings and money market deposits. The estimated fair value of demand, NOW, savings and money market deposits is the amount payable on demand at the reporting date. Carrying value is used because the accounts have no stated maturity and the customer has the ability to withdraw funds immediately. The carrying amount and estimated fair values for financial instruments as of March 31, 2020 were as follows: Carrying value Estimated fair value Level 1 Level 2 Level 3 Financial assets Securities to be held to maturity $ 341,592,000 $ 349,248,000 $ — $ 349,248,000 $ — Loans (net of allowance for loan losses) Commercial Real estate 378,049,000 371,916,000 — 7,000 371,909,000 Construction 43,397,000 42,693,000 — — 42,693,000 Other 234,940,000 233,411,000 — — 233,411,000 Municipal 43,502,000 41,909,000 — — 41,909,000 Residential Term 499,478,000 503,098,000 — 335,000 502,763,000 Construction 15,163,000 15,304,000 — — 15,304,000 Home equity line of credit 89,442,000 89,407,000 — 700,000 88,707,000 Consumer 28,379,000 26,933,000 — 9,000 26,924,000 Total loans 1,332,350,000 1,324,671,000 — 1,051,000 1,323,620,000 Mortgage servicing rights 1,609,000 2,126,000 — 2,126,000 — Financial liabilities Local certificates of deposit $ 290,440,000 $ 290,886,000 $ — $ 290,886,000 $ — National certificates of deposit 420,498,000 429,110,000 — 429,110,000 — Total certificates of deposits 710,938,000 719,996,000 — 719,996,000 — Repurchase agreements 37,937,000 37,494,000 — 37,494,000 — Federal Home Loan Bank advances 210,103,000 211,228,000 — 211,228,000 — Total borrowed funds 248,040,000 248,722,000 — 248,722,000 — The carrying amounts and estimated fair values for financial instruments as of December 31, 2019 were as follows: Carrying value Estimated fair value Level 1 Level 2 Level 3 Financial assets Securities to be held to maturity $ 281,606,000 $ 287,045,000 $ — $ 287,045,000 $ — Loans (net of allowance for loan losses) Commercial Real estate 368,645,000 364,626,000 — 2,000 364,624,000 Construction 37,678,000 37,366,000 — — 37,366,000 Other 215,068,000 212,548,000 — 5,046,000 207,502,000 Municipal 41,258,000 40,552,000 — — 40,552,000 Residential Term 491,315,000 491,359,000 — 577,000 490,782,000 Construction 14,785,000 14,786,000 — — 14,786,000 Home equity line of credit 91,149,000 90,959,000 — 954,000 90,005,000 Consumer 25,538,000 23,489,000 — — 23,489,000 Total loans 1,285,436,000 1,275,685,000 — 6,579,000 1,269,106,000 Mortgage servicing rights 1,546,000 2,089,000 — 2,089,000 — Financial liabilities Local certificates of deposit $ 285,602,000 $ 281,480,000 $ — $ 281,480,000 $ — National certificates of deposit 404,377,000 412,337,000 — 412,337,000 — Total deposits 689,979,000 693,817,000 — 693,817,000 — Repurchase agreements 37,450,000 37,450,000 — 37,450,000 — Federal Home Loan Bank advances 147,505,000 140,063,000 — 140,063,000 — Total borrowed funds 184,955,000 177,513,000 — 177,513,000 — The carrying amount and estimated fair values for financial instruments as of March 31, 2019 were as follows: Carrying value Estimated fair value Level 1 Level 2 Level 3 Financial assets Securities to be held to maturity $ 281,219,000 $ 282,568,000 $ — $ 282,568,000 $ — Loans (net of allowance for loan losses) Commercial Real estate 353,521,000 347,398,000 — 422,000 346,976,000 Construction 33,852,000 33,266,000 — — 33,266,000 Other 201,459,000 199,700,000 — 5,458,000 194,242,000 Municipal 54,217,000 53,179,000 — — 53,179,000 Residential Term 472,941,000 463,150,000 — 625,000 462,525,000 Construction 18,415,000 18,034,000 — — 18,034,000 Home equity line of credit 94,957,000 92,834,000 — 14,000 92,820,000 Consumer 23,787,000 22,124,000 — — 22,124,000 Total loans 1,253,149,000 1,229,685,000 — 6,519,000 1,223,166,000 Mortgage servicing rights 1,356,000 2,410,000 — 2,410,000 — Financial liabilities Local certificates of deposit 293,980,000 293,325,000 — 293,325,000 — National certificates of deposit 418,496,000 419,285,000 — 419,285,000 — Total certificates of deposits 712,476,000 712,610,000 — 712,610,000 — Repurchase agreements 30,309,000 30,276,000 — 30,276,000 — Federal Home Loan Bank advances 140,110,000 139,565,000 — 139,565,000 — Total borrowed funds 170,419,000 169,841,000 — 169,841,000 —

Impact of Recently Issued Accou

Impact of Recently Issued Accounting Standards	3 Months Ended
	Mar. 31, 2020
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Impact of Recently Issued Accounting Standards	Impact of Recently Issued Accounting Standards In June 2016, the FASB issued Accounting Standards Update (ASU) No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. Under the new guidance, which will replace the existing incurred loss model for recognizing credit losses, banks and other lending institutions will be required to recognize the full amount of expected credit losses. The new guidance, which is referred to as the current expected credit loss model, requires that expected credit losses for financial assets held at the reporting date that are accounted for at amortized cost be measured and recognized based on historical experience and current and reasonably supportable forecasted conditions to reflect the full amount of expected credit losses. A modified version of these requirements also applies to debt securities classified as available for sale. The ASU was to be effective for all SEC registrants for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. On October 16, 2019 FASB voted to finalize a proposal issued in August 2019 under which the effective implementation date was changed for SEC registrants meeting the definition of a Smaller Reporting Company to fiscal years beginning after December 15, 2022. Early adoption is permitted for fiscal years beginning after December 15, 2018, including interim periods within such years. The Company qualifies as a Smaller Reporting Company. It continues to evaluate the impact of the adoption of the ASU on its consolidated financial statements, and continues to anticipates that it may have a material impact upon adoption. The Bank has formed an implementation committee for ASU No. 2016-13. To date, committee members have participated in educational seminars on the new standards, identified the historical data sets that will be necessary to implement the new standard, and have chosen a third-party vendor who provides software solutions for ASU No. 2016-13 modeling and calculation. The Bank is in the late stages of implementing this software and plans to run incurred loss and current expected credit models in parallel until adoption of ASU No. 2016-13. In January 2017, the FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The ASU was issued to reduce the cost and complexity of the goodwill impairment test. To simplify the subsequent measurement of goodwill, step two of the goodwill impairment test was eliminated. Instead, a Company will recognize an impairment of goodwill should the carrying value of a reporting unit exceed its fair value (i.e. step one). The ASU was effective for the Company on January 1, 2020 and will be applied prospectively. Implementation of this ASU did not have a material effect on the Company's consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-13, Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement. This ASU eliminates, adds and modifies certain disclosure requirements for fair value measurements. Among the changes, entities will no longer be required to disclose the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, but will be required to disclose the range and weighted average used to develop significant unobservable inputs for Level 3 fair value measurements. ASU No. 2018-13 is effective for interim and annual reporting periods beginning after December 15, 2019; early adoption is permitted. Entities are also allowed to elect early adoption for the eliminated or modified disclosure requirements and delay adoption of the new disclosure requirements until their effective date. As ASU No. 2018-13 only revises disclosure requirements, it did not have a material impact on the Company’s consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-14, Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans . This ASU makes minor changes to the disclosure requirements for employers that sponsor defined benefit pension and/or other postretirement benefit plans. ASU 2018-14 is effective for fiscal years ending after December 15, 2020; early adoption is permitted. As ASU 2018-14 only revises disclosure requirements, it will not have a material impact on the Company’s consolidated financial statements.

Basis of Presentation (Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Financial Derivative Instruments	The Bank uses derivative financial instruments for risk management purposes and not for trading or speculative purposes. As part of its overall asset and liability management strategy, the Bank periodically uses derivative instruments to minimize significant unplanned fluctuations in earnings and cash flows caused by interest rate volatility. The Bank’s interest rate risk management strategy involves modifying the re-pricing characteristics of certain assets or liabilities so that changes in interest rates do not have a significant effect on net interest income. The Bank recognizes its derivative instruments in the consolidated balance sheet at fair value. On the date the derivative instrument is entered into, the Bank designates whether the derivative is part of a hedging relationship (i.e., cash flow or fair value hedge). The Bank formally documents relationships between hedging instruments and hedged items, as well as its risk management objective and strategy for undertaking hedge transactions. The Bank also assesses, both at the hedge’s inception and on an ongoing basis, whether the derivatives used in hedging transactions are highly effective in offsetting the changes in cash flows or fair values of hedged items. Changes in fair value of derivative instruments that are highly effective and qualify as cash flow hedges are recorded in other comprehensive income or loss. Any ineffective portion is recorded in earnings. The Bank discontinues hedge accounting when it is determined that the derivative is no longer highly effective in offsetting changes of the hedged risk on the hedged item, or management determines that the designation of the derivative as a hedging instrument is no longer appropriate.
Reclassifications	Certain items from the prior year were reclassified in the financial statements to conform with the current year presentation. These do not have a material impact on the consolidated balance sheet or statement of income and comprehensive income presentations.
Fair Value	Certain assets and liabilities are recorded at fair value to provide additional insight into the Company's quality of earnings. Some of these assets and liabilities are measured on a recurring basis while others are measured on a nonrecurring basis, with the determination based upon applicable existing accounting pronouncements. For example, securities available for sale are recorded at fair value on a recurring basis. Other assets, such as, other real estate owned and impaired loans, are recorded at fair value on a nonrecurring basis using the lower of cost or market methodology to determine impairment of individual assets. The Company groups assets and liabilities which are recorded at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. A financial instrument's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement (with level 1 considered highest and level 3 considered lowest). A brief description of each level follows: Level 1 - Valuation is based upon quoted prices for identical instruments in active markets. Level 2 - Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. Level 3 - Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates that market participants would use in pricing the asset or liability. Valuation includes use of discounted cash flow models and similar techniques. The fair value methods and assumptions for the Company's financial instruments and other assets measured at fair value are set forth below. Investment Securities The fair values of investment securities are estimated by independent providers using a market approach with observable inputs, including matrix pricing and recent transactions. In obtaining such valuation information from third parties, the Company has evaluated their valuation methodologies used to develop the fair values in order to determine whether the valuations are representative of an exit price in the Company's principal markets. The Company's principal markets for its securities portfolios are the secondary institutional markets, with an exit price that is predominantly reflective of bid level pricing in those markets. Fair values are calculated based on the value of one unit without regard to any premium or discount that may result from concentrations of ownership of a financial instrument, possible tax ramifications, or estimated transaction costs. If these considerations had been incorporated into the fair value estimates, the aggregate fair value could have been changed. Loans Fair values are estimated for portfolios of loans based on exit pricing notion. The fair values of performing loans are calculated by discounting scheduled cash flows through the estimated maturity using estimated market discount rates that reflect the credit and interest risk inherent in the loan. The estimates of maturity are based on the Company's historical experience with repayments for each loan classification, modified, as required, by an estimate of the effect of current economic and lending conditions, and the effects of estimated prepayments. Assumptions regarding credit risk, cash flows, and discount rates are judgmentally determined using available market information and specific borrower information. Management has made estimates of fair value using discount rates that it believes to be reasonable. However, because there is no market for many of these financial instruments, Management has no basis to determine whether the fair value presented above would be indicative of the value negotiated in an actual sale. As such, the Company classifies loans as Level 3, except for certain collateral-dependent impaired loans. Fair values of impaired loans are based on estimated cash flows and are discounted using a rate commensurate with the risk associated with the estimated cash flows, or if collateral dependent, discounted to the appraised value of the collateral as determined by reference to sale prices of similar properties, less costs to sell. As such, the Company classifies collateral dependent impaired loans for which a specific reserve results in a fair value measure as Level 2. All other impaired loans are classified as Level 3. Other Real Estate Owned Real estate acquired through foreclosure is initially recorded at fair value. The fair value of other real estate owned is based on property appraisals and an analysis of similar properties currently available. As such, the Company records other real estate owned as nonrecurring Level 2. Mortgage Servicing Rights Mortgage servicing rights represent the value associated with servicing residential mortgage loans. Servicing assets and servicing liabilities are reported using the amortization method and compared to fair value for impairment. In evaluating the fair values of mortgage servicing rights, the Company obtains third party valuations based on loan level data including note rate, type and term of the underlying loans. As such, the Company classifies mortgage servicing rights as Level 2. Time Deposits The fair value of maturity deposits is based on the discounted value of contractual cash flows using a replacement cost of funds approach. The discount rate is estimated using the cost of funds borrowing rate in the market. As such, the Company classifies deposits as Level 2. Borrowed Funds The fair value of borrowed funds is based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently available for borrowings of similar remaining maturities. As such, the Company classifies borrowed funds as Level 2. Derivatives The fair value of interest rate swaps is determined using inputs that are observable in the market place obtained from third parties including yield curves, publicly available volatilities, and floating indexes and, accordingly, are classified as Level 2 inputs. The credit value adjustments associated with derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by the Company and its counterparties. As of March 31, 2020 and 2019 , and December 31, 2019 , the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives due to collateral postings. Customer Loan Derivatives The valuation of the Company’s customer loan derivatives is obtained from a third-party pricing service and is determined using a discounted cash flow analysis on the expected cash flows of each derivative. The pricing analysis is based on observable inputs for the contractual terms of the derivatives, including the period to maturity and interest rate curves. The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of master netting arrangements and any applicable credit enhancements, such as collateral postings. Limitations Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. These values do not reflect any premium or discount that could result from offering for sale at one time the Company's entire holdings of a particular financial instrument. Because no market exists for a significant portion of the Company's financial instruments, fair value estimates are based on Management's judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and therefore cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Fair value estimates are based on existing on- and off-balance-sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. Other significant assets and liabilities that are not considered financial instruments include the deferred tax asset, premises and equipment, and other real estate owned. In addition, tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on fair value estimates and have not been considered in any of the estimates.
Fair Value of Financial Instruments	Fair Value of Financial Instruments FASB ASC Topic 825 "Financial Instruments" requires disclosures of fair value information about financial instruments, whether or not recognized in the balance sheet, if the fair values can be reasonably determined. Fair value is best determined based upon quoted market prices. However, in many instances, there are no quoted market prices for the Company's various financial instruments. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques using observable inputs when available. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. Accordingly, the fair value estimates may not be realized in an immediate settlement of the instrument. Topic 825 excludes certain financial instruments and all nonfinancial instruments from its disclosure requirements. Accordingly, the aggregate fair value amounts presented may not necessarily represent the underlying fair value of the Company. This summary excludes financial assets and liabilities for which carrying value approximates fair values and financial instruments that are recorded at fair value on a recurring basis. Financial instruments for which carrying values approximate fair value include cash equivalents, interest-bearing deposits in other banks, demand, NOW, savings and money market deposits. The estimated fair value of demand, NOW, savings and money market deposits is the amount payable on demand at the reporting date. Carrying value is used because the accounts have no stated maturity and the customer has the ability to withdraw funds immediately.
Impact of Recently Issued Accounting Standards	Impact of Recently Issued Accounting Standards In June 2016, the FASB issued Accounting Standards Update (ASU) No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. Under the new guidance, which will replace the existing incurred loss model for recognizing credit losses, banks and other lending institutions will be required to recognize the full amount of expected credit losses. The new guidance, which is referred to as the current expected credit loss model, requires that expected credit losses for financial assets held at the reporting date that are accounted for at amortized cost be measured and recognized based on historical experience and current and reasonably supportable forecasted conditions to reflect the full amount of expected credit losses. A modified version of these requirements also applies to debt securities classified as available for sale. The ASU was to be effective for all SEC registrants for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. On October 16, 2019 FASB voted to finalize a proposal issued in August 2019 under which the effective implementation date was changed for SEC registrants meeting the definition of a Smaller Reporting Company to fiscal years beginning after December 15, 2022. Early adoption is permitted for fiscal years beginning after December 15, 2018, including interim periods within such years. The Company qualifies as a Smaller Reporting Company. It continues to evaluate the impact of the adoption of the ASU on its consolidated financial statements, and continues to anticipates that it may have a material impact upon adoption. The Bank has formed an implementation committee for ASU No. 2016-13. To date, committee members have participated in educational seminars on the new standards, identified the historical data sets that will be necessary to implement the new standard, and have chosen a third-party vendor who provides software solutions for ASU No. 2016-13 modeling and calculation. The Bank is in the late stages of implementing this software and plans to run incurred loss and current expected credit models in parallel until adoption of ASU No. 2016-13. In January 2017, the FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The ASU was issued to reduce the cost and complexity of the goodwill impairment test. To simplify the subsequent measurement of goodwill, step two of the goodwill impairment test was eliminated. Instead, a Company will recognize an impairment of goodwill should the carrying value of a reporting unit exceed its fair value (i.e. step one). The ASU was effective for the Company on January 1, 2020 and will be applied prospectively. Implementation of this ASU did not have a material effect on the Company's consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-13, Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement. This ASU eliminates, adds and modifies certain disclosure requirements for fair value measurements. Among the changes, entities will no longer be required to disclose the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, but will be required to disclose the range and weighted average used to develop significant unobservable inputs for Level 3 fair value measurements. ASU No. 2018-13 is effective for interim and annual reporting periods beginning after December 15, 2019; early adoption is permitted. Entities are also allowed to elect early adoption for the eliminated or modified disclosure requirements and delay adoption of the new disclosure requirements until their effective date. As ASU No. 2018-13 only revises disclosure requirements, it did not have a material impact on the Company’s consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-14, Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans . This ASU makes minor changes to the disclosure requirements for employers that sponsor defined benefit pension and/or other postretirement benefit plans. ASU 2018-14 is effective for fiscal years ending after December 15, 2020; early adoption is permitted. As ASU 2018-14 only revises disclosure requirements, it will not have a material impact on the Company’s consolidated financial statements.

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Schedule of Available For Sale, Held-to-Maturity, and Restricted Equity Securities	The following table summarizes the amortized cost and estimated fair value of investment securities at March 31, 2020 : Amortized Cost Unrealized Gains Unrealized Losses Fair Value (Estimated) Securities available for sale U.S. Government-sponsored agencies $ 7,500,000 $ 52,000 $ — $ 7,552,000 Mortgage-backed securities 276,235,000 9,106,000 (189,000 ) 285,152,000 State and political subdivisions 19,206,000 1,018,000 — 20,224,000 $ 302,941,000 $ 10,176,000 $ (189,000 ) $ 312,928,000 Securities to be held to maturity U.S. Government-sponsored agencies $ 35,981,000 $ 207,000 $ — $ 36,188,000 Mortgage-backed securities 51,142,000 1,392,000 (7,000 ) 52,527,000 State and political subdivisions 239,719,000 5,819,000 (345,000 ) 245,193,000 Corporate securities 14,750,000 590,000 — 15,340,000 $ 341,592,000 $ 8,008,000 $ (352,000 ) $ 349,248,000 Restricted equity securities Federal Home Loan Bank Stock $ 8,957,000 $ — $ — $ 8,957,000 Federal Reserve Bank Stock 1,037,000 — — 1,037,000 $ 9,994,000 $ — $ — $ 9,994,000 The following table summarizes the amortized cost and estimated fair value of investment securities at December 31, 2019 : Amortized Cost Unrealized Gains Unrealized Losses Fair Value (Estimated) Securities available for sale U.S. Government-sponsored agencies $ 7,500,000 $ — $ (102,000 ) $ 7,398,000 Mortgage-backed securities 323,277,000 4,173,000 (833,000 ) 326,617,000 State and political subdivisions 25,113,000 1,392,000 — 26,505,000 $ 355,890,000 $ 5,565,000 $ (935,000 ) $ 360,520,000 Securities to be held to maturity U.S. Government-sponsored agencies $ 32,840,000 $ 47,000 $ (26,000 ) $ 32,861,000 Mortgage-backed securities 14,431,000 450,000 (16,000 ) 14,865,000 State and political subdivisions 219,585,000 4,936,000 (109,000 ) 224,412,000 Corporate securities 14,750,000 157,000 — 14,907,000 $ 281,606,000 $ 5,590,000 $ (151,000 ) $ 287,045,000 Restricted equity securities Federal Home Loan Bank Stock $ 7,945,000 $ — $ — $ 7,945,000 Federal Reserve Bank Stock 1,037,000 — — 1,037,000 $ 8,982,000 $ — $ — $ 8,982,000 The following table summarizes the amortized cost and estimated fair value of investment securities at March 31, 2019 : Amortized Cost Unrealized Gains Unrealized Losses Fair Value (Estimated) Securities available for sale U.S. Government-sponsored agencies $ 5,000,000 $ 16,000 $ — $ 5,016,000 Mortgage-backed securities 317,269,000 1,394,000 (3,240,000 ) 315,423,000 State and political subdivisions 4,955,000 4,000 (122,000 ) 4,837,000 $ 327,224,000 $ 1,414,000 $ (3,362,000 ) $ 325,276,000 Securities to be held to maturity U.S. Government-sponsored agencies $ 31,155,000 $ 48,000 $ (280,000 ) $ 30,923,000 Mortgage-backed securities 17,560,000 372,000 (146,000 ) 17,786,000 State and political subdivisions 225,204,000 3,162,000 (1,801,000 ) 226,565,000 Corporate securities 7,300,000 — (6,000 ) 7,294,000 $ 281,219,000 $ 3,582,000 $ (2,233,000 ) $ 282,568,000 Restricted equity securities Federal Home Loan Bank Stock $ 7,945,000 $ — $ — $ 7,945,000 Federal Reserve Bank Stock 1,037,000 — — 1,037,000 $ 8,982,000 $ — $ — $ 8,982,000
Contractual Maturities of Investment Securities	The following table summarizes the contractual maturities of investment securities at March 31, 2020 : Securities available for sale Securities to be held to maturity Amortized Cost Fair Value (Estimated) Amortized Cost Fair Value (Estimated) Due in 1 year or less $ 66,000 $ 66,000 $ 1,331,000 $ 1,337,000 Due in 1 to 5 years 25,221,000 26,159,000 27,854,000 28,361,000 Due in 5 to 10 years 62,462,000 65,032,000 184,037,000 189,214,000 Due after 10 years 215,192,000 221,671,000 128,370,000 130,336,000 $ 302,941,000 $ 312,928,000 $ 341,592,000 $ 349,248,000 The following table summarizes the contractual maturities of investment securities at December 31, 2019 : Securities available for sale Securities to be held to maturity Amortized Cost Fair Value (Estimated) Amortized Cost Fair Value (Estimated) Due in 1 year or less $ 127,000 $ 127,000 $ 1,334,000 $ 1,338,000 Due in 1 to 5 years 36,534,000 36,778,000 25,860,000 26,323,000 Due in 5 to 10 years 93,134,000 95,014,000 179,133,000 182,834,000 Due after 10 years 226,095,000 228,601,000 75,279,000 76,550,000 $ 355,890,000 $ 360,520,000 $ 281,606,000 $ 287,045,000 The following table summarizes the contractual maturities of investment securities at March 31, 2019 : Securities available for sale Securities to be held to maturity Amortized Cost Fair Value (Estimated) Amortized Cost Fair Value (Estimated) Due in 1 year or less $ — $ — $ 1,429,000 $ 1,431,000 Due in 1 to 5 years 15,670,000 15,736,000 21,096,000 21,203,000 Due in 5 to 10 years 107,978,000 108,698,000 176,967,000 178,044,000 Due after 10 years 203,576,000 200,842,000 81,727,000 81,890,000 $ 327,224,000 $ 325,276,000 $ 281,219,000 $ 282,568,000
Schedule of Securities Gains and Losses	The following table shows securities gains and losses for the three months ended March 31, 2020 and 2019 : For the three months ended March 31, 2020 2019 Proceeds from sales of securities $ 68,620,000 $ — Gross realized gains 1,098,000 — Gross realized losses (346,000 ) — Net gain $ 752,000 $ — Related income taxes $ 158,000 $ —
Schedule of Securities Temporarily Impaired	Information regarding securities temporarily impaired as of March 31, 2020 is summarized below: Less than 12 months 12 months or more Total Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses Mortgage-backed securities $ 2,963,000 $ (27,000 ) $ 7,424,000 $ (169,000 ) $ 10,387,000 $ (196,000 ) State and political subdivisions 19,556,000 (345,000 ) — — 19,556,000 (345,000 ) $ 22,519,000 $ (372,000 ) $ 7,424,000 $ (169,000 ) $ 29,943,000 $ (541,000 ) As of December 31, 2019 , there were 86 securities with unrealized losses held in the Company's portfolio. These securities were temporarily impaired as a result of changes in interest rates reducing their fair value, of which 28 had been temporarily impaired for 12 months or more. Information regarding securities temporarily impaired as of December 31, 2019 is summarized below: Less than 12 months 12 months or more Total Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses U.S. Government-sponsored agencies $ 12,372,000 $ (128,000 ) $ — $ — $ 12,372,000 $ (128,000 ) Mortgage-backed securities 54,244,000 (359,000 ) 18,696,000 (490,000 ) 72,940,000 (849,000 ) State and political subdivisions 10,532,000 (101,000 ) 304,000 (8,000 ) 10,836,000 (109,000 ) $ 77,148,000 $ (588,000 ) $ 19,000,000 $ (498,000 ) $ 96,148,000 $ (1,086,000 ) As of March 31, 2019 , there were 291 securities with unrealized losses held in the Company's portfolio. These securities were temporarily impaired as a result of changes in interest rates reducing their fair value, of which 274 had been temporarily impaired for 12 months or more. In the first quarter of 2019, one issuer of securities held in the portfolio was downgraded by a rating agency to less than investment grade. These securities totaled approximately 0.09% of overall state and municipal security holdings and were subsequently sold during the third quarter 2019. Information regarding securities temporarily impaired as of March 31, 2019 is summarized below: Less than 12 months 12 months or more Total Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses U.S. Government-sponsored agencies $ — $ — $ 10,875,000 $ (280,000 ) $ 10,875,000 $ (280,000 ) Mortgage-backed securities 24,525,000 (138,000 ) 198,272,000 (3,248,000 ) 222,797,000 (3,386,000 ) State and political subdivisions 1,264,000 (3,000 ) 58,168,000 (1,920,000 ) 59,432,000 (1,923,000 ) Corporate securities 2,994,000 (6,000 ) — — 2,994,000 (6,000 ) $ 28,783,000 $ (147,000 ) $ 267,315,000 $ (5,448,000 ) $ 296,098,000 $ (5,595,000 )

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2020
Loans and Leases Receivable Disclosure [Abstract]
Composition of Loan Portfolio	The following table shows the composition of the Company's loan portfolio as of March 31, 2020 and 2019 and at December 31, 2019 : March 31, 2020 December 31, 2019 March 31, 2019 Commercial Real estate $ 382,753,000 28.5 % $ 372,810,000 28.7 % $ 357,760,000 28.3 % Construction 43,913,000 3.3 % 38,084,000 3.0 % 34,231,000 2.7 % Other 237,896,000 17.7 % 218,773,000 16.9 % 205,462,000 16.2 % Municipal 43,537,000 3.2 % 41,288,000 3.2 % 54,246,000 4.3 % Residential Term 500,971,000 37.3 % 492,455,000 37.9 % 474,241,000 37.5 % Construction 15,202,000 1.1 % 14,813,000 1.2 % 18,450,000 1.5 % Home equity line of credit 90,674,000 6.7 % 92,349,000 7.1 % 95,692,000 7.6 % Consumer 29,262,000 2.2 % 26,503,000 2.0 % 24,557,000 1.9 % Total $ 1,344,208,000 100.0 % $ 1,297,075,000 100.0 % $ 1,264,639,000 100.0 %
Past Due Loans Aging	Information on the past-due status of loans by class of financing receivable as of March 31, 2020 , is presented in the following table: 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due All Past Due Current Total 90+ Days & Accruing Commercial Real estate $ 2,935,000 $ 2,000 $ 1,297,000 $ 4,234,000 $ 378,519,000 $ 382,753,000 $ 22,000 Construction 59,000 — 246,000 305,000 43,608,000 43,913,000 — Other 1,678,000 295,000 3,895,000 5,868,000 232,028,000 237,896,000 3,536,000 Municipal — — — — 43,537,000 43,537,000 — Residential Term 4,270,000 171,000 3,320,000 7,761,000 493,210,000 500,971,000 192,000 Construction — — — — 15,202,000 15,202,000 — Home equity line of credit 1,566,000 264,000 1,481,000 3,311,000 87,363,000 90,674,000 — Consumer 250,000 18,000 82,000 350,000 28,912,000 29,262,000 20,000 Total $ 10,758,000 $ 750,000 $ 10,321,000 $ 21,829,000 $ 1,322,379,000 $ 1,344,208,000 $ 3,770,000 Information on the past-due status of loans by class of financing receivable as of December 31, 2019 , is presented in the following table: 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due All Past Due Current Total 90+ Days & Accruing Commercial Real estate $ 786,000 $ 377,000 $ 611,000 $ 1,774,000 $ 371,036,000 $ 372,810,000 $ — Construction — 14,000 257,000 271,000 37,813,000 38,084,000 — Other 2,764,000 465,000 1,799,000 5,028,000 213,745,000 218,773,000 1,464,000 Municipal — — — — 41,288,000 41,288,000 — Residential Term 1,129,000 1,132,000 2,379,000 4,640,000 487,815,000 492,455,000 86,000 Construction — — — — 14,813,000 14,813,000 — Home equity line of credit 1,169,000 58,000 1,730,000 2,957,000 89,392,000 92,349,000 — Consumer 291,000 46,000 10,000 347,000 26,156,000 26,503,000 10,000 Total $ 6,139,000 $ 2,092,000 $ 6,786,000 $ 15,017,000 $ 1,282,058,000 $ 1,297,075,000 $ 1,560,000 Information on the past-due status of loans by class of financing receivable as of March 31, 2019 , is presented in the following table: 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due All Past Due Current Total 90+ Days & Accruing Commercial Real estate $ 282,000 $ 825,000 $ 621,000 $ 1,728,000 $ 356,032,000 $ 357,760,000 $ — Construction 47,000 — 286,000 333,000 33,898,000 34,231,000 — Other 664,000 63,000 303,000 1,030,000 204,432,000 205,462,000 — Municipal — — — — 54,246,000 54,246,000 — Residential Term 2,659,000 1,153,000 1,434,000 5,246,000 468,995,000 474,241,000 — Construction — — — — 18,450,000 18,450,000 — Home equity line of credit 1,985,000 11,000 369,000 2,365,000 93,327,000 95,692,000 — Consumer 411,000 163,000 4,000 578,000 23,979,000 24,557,000 4,000 Total $ 6,048,000 $ 2,215,000 $ 3,017,000 $ 11,280,000 $ 1,253,359,000 $ 1,264,639,000 $ 4,000
Nonaccrual Loans	Information on nonaccrual loans as of March 31, 2020 and 2019 and at December 31, 2019 is presented in the following table: March 31, 2020 December 31, 2019 March 31, 2019 Commercial Real estate $ 1,748,000 $ 1,784,000 $ 1,468,000 Construction 246,000 256,000 286,000 Other 457,000 6,534,000 7,067,000 Municipal — — — Residential Term 5,615,000 5,899,000 4,211,000 Construction — — — Home equity line of credit 1,916,000 2,171,000 702,000 Consumer 66,000 5,000 2,000 Total $ 10,048,000 $ 16,649,000 $ 13,736,000
Impaired Loans by Class of Financing Receivable	A breakdown of impaired loans by class of financing receivable as of and for the period ended March 31, 2020 is presented in the following table: For the three months ended March 31, 2020 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Recognized Interest Income With No Related Allowance Commercial Real estate $ 5,162,000 $ 5,421,000 $ — $ 5,157,000 $ 47,000 Construction 246,000 265,000 — 717,000 — Other 818,000 848,000 — 793,000 3,000 Municipal — — — — — Residential Term 10,378,000 12,135,000 — 10,015,000 67,000 Construction — — — — — Home equity line of credit 1,232,000 1,306,000 — 1,185,000 4,000 Consumer — — — — — $ 17,836,000 $ 19,975,000 $ — $ 17,867,000 $ 121,000 With an Allowance Recorded Commercial Real estate $ 1,061,000 $ 1,082,000 $ 230,000 $ 1,064,000 $ 8,000 Construction 701,000 701,000 3,000 234,000 10,000 Other 172,000 194,000 172,000 4,269,000 — Municipal — — — — — Residential Term 1,660,000 1,755,000 233,000 1,999,000 13,000 Construction — — — — — Home equity line of credit 996,000 1,002,000 296,000 1,124,000 — Consumer 67,000 67,000 58,000 26,000 — $ 4,657,000 $ 4,801,000 $ 992,000 $ 8,716,000 $ 31,000 Total Commercial Real estate $ 6,223,000 $ 6,503,000 $ 230,000 $ 6,221,000 $ 55,000 Construction 947,000 966,000 3,000 951,000 10,000 Other 990,000 1,042,000 172,000 5,062,000 3,000 Municipal — — — — — Residential Term 12,038,000 13,890,000 233,000 12,014,000 80,000 Construction — — — — — Home equity line of credit 2,228,000 2,308,000 296,000 2,309,000 4,000 Consumer 67,000 67,000 58,000 26,000 — $ 22,493,000 $ 24,776,000 $ 992,000 $ 26,583,000 $ 152,000 Substantially all interest income recognized on impaired loans for all classes of financing receivables was recognized on a cash basis as received. A breakdown of impaired loans by class of financing receivable as of and for the year ended December 31, 2019 is presented in the following table: Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Recognized Interest Income With No Related Allowance Commercial Real estate $ 5,235,000 $ 5,492,000 $ — $ 7,611,000 $ 228,000 Construction 958,000 970,000 — 936,000 47,000 Other 756,000 786,000 — 965,000 29,000 Municipal — — — — — Residential Term 10,176,000 11,931,000 — 10,033,000 269,000 Construction — — — — — Home equity line of credit 1,087,000 1,151,000 — 997,000 20,000 Consumer — — — — — $ 18,212,000 $ 20,330,000 $ — $ 20,542,000 $ 593,000 With an Allowance Recorded Commercial Real estate $ 1,074,000 $ 1,093,000 $ 251,000 $ 1,528,000 $ 60,000 Construction — — — — — Other 6,319,000 6,925,000 1,273,000 6,778,000 — Municipal — — — — — Residential Term 2,263,000 2,412,000 237,000 2,424,000 82,000 Construction — — — — — Home equity line of credit 1,401,000 1,412,000 447,000 283,000 — Consumer 5,000 6,000 5,000 2,000 — $ 11,062,000 $ 11,848,000 $ 2,213,000 $ 11,015,000 $ 142,000 Total Commercial Real estate $ 6,309,000 $ 6,585,000 $ 251,000 $ 9,139,000 $ 288,000 Construction 958,000 970,000 — 936,000 47,000 Other 7,075,000 7,711,000 1,273,000 7,743,000 29,000 Municipal — — — — — Residential Term 12,439,000 14,343,000 237,000 12,457,000 351,000 Construction — — — — — Home equity line of credit 2,488,000 2,563,000 447,000 1,280,000 20,000 Consumer 5,000 6,000 5,000 2,000 — $ 29,274,000 $ 32,178,000 $ 2,213,000 $ 31,557,000 $ 735,000 A breakdown of impaired loans by class of financing receivable as of and for the period ended March 31, 2019 is presented in the following table: For the three months ended March 31, 2019 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Recognized Interest Income With No Related Allowance Commercial Real estate $ 8,391,000 $ 8,779,000 $ — $ 8,741,000 $ 90,000 Construction 1,007,000 1,007,000 — 817,000 12,000 Other 709,000 734,000 — 1,207,000 6,000 Municipal — — — — — Residential Term 8,926,000 10,345,000 — 9,007,000 68,000 Construction — — — — — Home equity line of credit 1,009,000 1,071,000 — 976,000 5,000 Consumer — — — — — $ 20,042,000 $ 21,936,000 $ — $ 20,748,000 $ 181,000 With an Allowance Recorded Commercial Real estate $ 1,566,000 $ 1,583,000 $ 233,000 $ 1,215,000 $ 26,000 Construction — — — — — Other 6,944,000 7,315,000 1,485,000 7,511,000 — Municipal — — — — — Residential Term 1,993,000 2,131,000 348,000 1,845,000 17,000 Construction — — — — — Home equity line of credit 21,000 25,000 7,000 29,000 — Consumer 2,000 2,000 2,000 1,000 — $ 10,526,000 $ 11,056,000 $ 2,075,000 $ 10,601,000 $ 43,000 Total Commercial Real estate $ 9,957,000 $ 10,362,000 $ 233,000 $ 9,956,000 $ 116,000 Construction 1,007,000 1,007,000 — 817,000 12,000 Other 7,653,000 8,049,000 1,485,000 8,718,000 6,000 Municipal — — — — — Residential Term 10,919,000 12,476,000 348,000 10,852,000 85,000 Construction — — — — — Home equity line of credit 1,030,000 1,096,000 7,000 1,005,000 5,000 Consumer 2,000 2,000 2,000 1,000 — $ 30,568,000 $ 32,992,000 $ 2,075,000 $ 31,349,000 $ 224,000
Troubled Debt Restructurings on Financing Receivables	The following table shows TDRs by class and the specific reserve as of March 31, 2020 : Number of Loans Balance Specific Reserves Commercial Real estate 16 $ 4,688,000 $ 225,000 Construction 1 701,000 3,000 Other 7 779,000 131,000 Municipal — — — Residential Term 54 8,321,000 197,000 Construction — — — Home equity line of credit 3 479,000 — Consumer — — — 81 $ 14,968,000 $ 556,000 The following table shows TDRs by class and the specific reserve as of December 31, 2019 : Number of Loans Balance Specific Reserves Commercial Real estate 17 $ 4,836,000 $ 246,000 Construction 1 701,000 — Other 8 6,932,000 1,231,000 Municipal — — — Residential Term 52 8,472,000 200,000 Construction — — — Home equity line of credit 3 483,000 — Consumer — — — 81 $ 21,424,000 $ 1,677,000 The following table shows TDRs by class and the specific reserve as of March 31, 2019 : Number of Loans Balance Specific Reserves Commercial Real estate 17 $ 8,583,000 $ 107,000 Construction 1 721,000 — Other 10 7,257,000 1,275,000 Municipal — — — Residential Term 49 8,331,000 225,000 Construction — — — Home equity line of credit 3 494,000 — Consumer — — — 80 $ 25,386,000 $ 1,607,000 As of March 31, 2020 , 22 of the loans classified as TDRs with a total balance of $3,622,000 were more than 30 days past due. Of these loans, one had been placed on TDR status in the previous 12 months. The following table shows these TDRs by class and the associated specific reserves included in the allowance for loan losses as of March 31, 2020 : Number of Loans Balance Specific Reserves Commercial Real estate 2 $ 618,000 $ — Construction — — — Other 4 540,000 131,000 Municipal — — — Residential Term 15 2,297,000 24,000 Construction — — — Home equity line of credit 1 167,000 — Consumer — — — 22 $ 3,622,000 $ 155,000 As of March 31, 2019 , 10 of the loans classified as TDRs with a total balance of $1,129,000 were more than 30 days past due. Of these loans, three had been placed on TDR status in the previous 12 months. The following table shows these TDRs by class and the associated specific reserves included in the allowance for loan losses as of March 31, 2019 : Number of Loans Balance Specific Reserves Commercial Real estate — $ — $ — Construction — — — Other 4 261,000 134,000 Municipal — — — Residential Term 5 701,000 36,000 Construction — — — Home equity line of credit 1 167,000 — Consumer — — — 10 $ 1,129,000 $ 170,000 For the three months ended March 31, 2020 , two loans were placed on TDR status. The following table shows these TDRs by class and the associated specific reserves included in the allowance for loan losses as of March 31, 2020 : Number of Loans Pre-Modification Post-Modification Outstanding Specific Reserves Commercial Real estate — $ — $ — $ — Construction — — — — Other — — — — Municipal — — — — Residential Term 2 235,000 190,000 — Construction — — — — Home equity line of credit — — — — Consumer — — — — 2 $ 235,000 $ 190,000 $ — For the three months ended March 31, 2019 , five loans were placed on TDR status. The following table shows these TDRs by class and associated specific reserves included in the allowance for loan losses as of March 31, 2019 : Number of Loans Pre-Modification Post-Modification Outstanding Specific Reserves Commercial Real estate — $ — $ — $ — Construction — — — — Other — — — — Municipal — — — — Residential Term 5 573,000 554,000 74,000 Construction — — — — Home equity line of credit — — — — Consumer — — — — 5 $ 573,000 $ 554,000 $ 74,000

Allowance for Loan Losses (Tabl

Allowance for Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2020
Receivables [Abstract]
Allowance for Loan Losses by Class of Financing Receivable and Allowance	A breakdown of the allowance for loan losses as of March 31, 2020 , December 31, 2019 , and March 31, 2019 , by class of financing receivable and allowance element, is presented in the following tables: As of March 31, 2020 Specific Reserves on Loans Evaluated Individually for Impairment General Reserves on Loans Based on Historical Loss Experience Reserves for Qualitative Factors Unallocated Reserves Total Reserves Commercial Real estate $ 230,000 $ 687,000 $ 2,945,000 $ — $ 3,862,000 Construction 3,000 80,000 341,000 — 424,000 Other 172,000 426,000 1,829,000 — 2,427,000 Municipal — — 29,000 — 29,000 Residential Term 233,000 300,000 693,000 — 1,226,000 Construction — 10,000 22,000 — 32,000 Home equity line of credit 296,000 168,000 548,000 — 1,012,000 Consumer 58,000 228,000 439,000 — 725,000 Unallocated — — — 2,121,000 2,121,000 $ 992,000 $ 1,899,000 $ 6,846,000 $ 2,121,000 $ 11,858,000 As of December 31, 2019 Specific Reserves on Loans Evaluated Individually for Impairment General Reserves on Loans Based on Historical Loss Experience Reserves for Qualitative Factors Unallocated Reserves Total Reserves Commercial Real estate $ 251,000 $ 729,000 $ 2,762,000 $ — $ 3,742,000 Construction — 76,000 289,000 — 365,000 Other 1,273,000 430,000 1,626,000 — 3,329,000 Municipal — — 27,000 — 27,000 Residential Term 237,000 153,000 634,000 — 1,024,000 Construction — 5,000 20,000 — 25,000 Home equity line of credit 447,000 130,000 501,000 — 1,078,000 Consumer 5,000 460,000 402,000 — 867,000 Unallocated — — — 1,182,000 1,182,000 $ 2,213,000 $ 1,983,000 $ 6,261,000 $ 1,182,000 $ 11,639,000 As of March 31, 2019 Specific Reserves on Loans Evaluated Individually for Impairment General Reserves on Loans Based on Historical Loss Experience Reserves for Qualitative Factors Unallocated Reserves Total Reserves Commercial Real estate $ 233,000 $ 790,000 $ 2,609,000 $ — $ 3,632,000 Construction — 76,000 249,000 — 325,000 Other 1,485,000 452,000 1,493,000 — 3,430,000 Municipal — — 25,000 — 25,000 Residential Term 348,000 182,000 584,000 — 1,114,000 Construction — 7,000 23,000 — 30,000 Home equity line of credit 7,000 158,000 465,000 — 630,000 Consumer 2,000 290,000 368,000 — 660,000 Unallocated — — — 1,644,000 1,644,000 $ 2,075,000 $ 1,955,000 $ 5,816,000 $ 1,644,000 $ 11,490,000
Summary of Risk Ratings for Loans	The following table summarizes the risk ratings for the Company's commercial real estate, commercial construction, commercial other, and municipal loans as of March 31, 2020 : Commercial Real Estate Commercial Construction Commercial Other Municipal Loans All Risk- Rated Loans 1 Strong $ — $ — $ 4,559,000 $ 28,000 $ 4,587,000 2 Above Average 10,222,000 842,000 5,933,000 40,340,000 57,337,000 3 Satisfactory 83,905,000 1,873,000 40,255,000 372,000 126,405,000 4 Average 203,263,000 26,029,000 131,664,000 2,797,000 363,753,000 5 Watch 68,618,000 14,702,000 46,357,000 — 129,677,000 6 OAEM 1,834,000 — 2,824,000 — 4,658,000 7 Substandard 14,911,000 467,000 6,304,000 — 21,682,000 8 Doubtful — — — — — Total $ 382,753,000 $ 43,913,000 $ 237,896,000 $ 43,537,000 $ 708,099,000 The following table summarizes the risk ratings for the Company's commercial real estate, commercial construction, commercial other, and municipal loans as of December 31, 2019 : Commercial Real Estate Commercial Construction Commercial Other Municipal Loans All Risk- Rated Loans 1 Strong $ — $ — $ 4,258,000 $ 32,000 $ 4,290,000 2 Above Average 12,393,000 794,000 6,187,000 38,290,000 57,664,000 3 Satisfactory 74,709,000 2,305,000 41,527,000 379,000 118,920,000 4 Average 205,510,000 19,017,000 107,389,000 2,587,000 334,503,000 5 Watch 63,582,000 15,488,000 47,152,000 — 126,222,000 6 OAEM 1,160,000 — 1,988,000 — 3,148,000 7 Substandard 15,456,000 480,000 10,272,000 — 26,208,000 8 Doubtful — — — — — Total $ 372,810,000 $ 38,084,000 $ 218,773,000 $ 41,288,000 $ 670,955,000 The following table summarizes the risk ratings for the Company's commercial real estate, commercial construction, commercial other, and municipal loans as of March 31, 2019 : Commercial Real Estate Commercial Construction Commercial Other Municipal Loans All Risk- Rated Loans 1 Strong $ — $ — $ 3,630,000 $ 43,000 $ 3,673,000 2 Above Average 10,097,000 36,000 4,447,000 51,806,000 66,386,000 3 Satisfactory 82,595,000 2,352,000 43,963,000 450,000 129,360,000 4 Average 179,290,000 23,267,000 89,825,000 1,947,000 294,329,000 5 Watch 63,503,000 8,290,000 50,619,000 — 122,412,000 6 OAEM 2,847,000 — 1,993,000 — 4,840,000 7 Substandard 19,305,000 286,000 10,985,000 — 30,576,000 8 Doubtful 123,000 — — — 123,000 Total $ 357,760,000 $ 34,231,000 $ 205,462,000 $ 54,246,000 $ 651,699,000
Allowance for Loan Losses Transactions	The following table presents allowance for loan losses activity by class for the three months ended March 31, 2020 , and allowance for loan loss balances by class and related loan balances by class as of March 31, 2020 : Commercial Municipal Residential Home Equity Line of Credit Consumer Unallocated Total Real Estate Construction Other Term Construction For the three months ended March 31, 2020 Beginning balance $ 3,742,000 $ 365,000 $ 3,329,000 $ 27,000 $ 1,024,000 $ 25,000 $ 1,078,000 $ 867,000 $ 1,182,000 $ 11,639,000 Charge offs — — — — 2,000 — 153,000 100,000 — 255,000 Recoveries — — 20,000 — 10,000 — 1,000 43,000 — 74,000 Provision (credit) 120,000 59,000 (922,000 ) 2,000 194,000 7,000 86,000 (85,000 ) 939,000 400,000 Ending balance $ 3,862,000 $ 424,000 $ 2,427,000 $ 29,000 $ 1,226,000 $ 32,000 $ 1,012,000 $ 725,000 $ 2,121,000 $ 11,858,000 Allowance for loan losses as of March 31, 2020 Ending balance specifically evaluated for impairment $ 230,000 $ 3,000 $ 172,000 $ — $ 233,000 $ — $ 296,000 $ 58,000 $ — $ 992,000 Ending balance collectively evaluated for impairment $ 3,632,000 $ 421,000 $ 2,255,000 $ 29,000 $ 993,000 $ 32,000 $ 716,000 $ 667,000 $ 2,121,000 $ 10,866,000 Related loan balances as of March 31, 2020 Ending balance $ 382,753,000 $ 43,913,000 $ 237,896,000 $ 43,537,000 $ 500,971,000 $ 15,202,000 $ 90,674,000 $ 29,262,000 $ — $ 1,344,208,000 Ending balance specifically evaluated for impairment $ 6,223,000 $ 947,000 $ 990,000 $ — $ 12,038,000 $ — $ 2,228,000 $ 67,000 $ — $ 22,493,000 Ending balance collectively evaluated for impairment $ 376,530,000 $ 42,966,000 $ 236,906,000 $ 43,537,000 $ 488,933,000 $ 15,202,000 $ 88,446,000 $ 29,195,000 $ — $ 1,321,715,000 The following table presents allowance for loan losses activity by class for the year ended December 31, 2019 and allowance for loan loss balances by class and related loan balances by class as of December 31, 2019 : Commercial Municipal Residential Home Equity Line of Credit Consumer Unallocated Total Real Estate Construction Other Term Construction For the year ended December 31, 2019 Beginning balance $ 3,567,000 $ 255,000 $ 3,541,000 $ 24,000 $ 1,235,000 $ 34,000 $ 730,000 $ 630,000 $ 1,216,000 $ 11,232,000 Charge offs 89,000 — 179,000 — 445,000 — 69,000 338,000 — 1,120,000 Recoveries 15,000 — 73,000 — 57,000 — 4,000 128,000 — 277,000 Provision (credit) 249,000 110,000 (106,000 ) 3,000 177,000 (9,000 ) 413,000 447,000 (34,000 ) 1,250,000 Ending balance $ 3,742,000 $ 365,000 $ 3,329,000 $ 27,000 $ 1,024,000 $ 25,000 $ 1,078,000 $ 867,000 $ 1,182,000 $ 11,639,000 Allowance for loan losses as of December 31, 2019 Ending balance specifically evaluated for impairment $ 251,000 $ — $ 1,273,000 $ — $ 237,000 $ — $ 447,000 $ 5,000 $ — $ 2,213,000 Ending balance collectively evaluated for impairment $ 3,491,000 $ 365,000 $ 2,056,000 $ 27,000 $ 787,000 $ 25,000 $ 631,000 $ 862,000 $ 1,182,000 $ 9,426,000 Related loan balances as of December 31, 2019 Ending balance $ 372,810,000 $ 38,084,000 $ 218,773,000 $ 41,288,000 $ 492,455,000 $ 14,813,000 $ 92,349,000 $ 26,503,000 $ — $ 1,297,075,000 Ending balance specifically evaluated for impairment $ 6,309,000 $ 958,000 $ 7,075,000 $ — $ 12,439,000 $ — $ 2,488,000 $ 5,000 $ — $ 29,274,000 Ending balance collectively evaluated for impairment $ 366,501,000 $ 37,126,000 $ 211,698,000 $ 41,288,000 $ 480,016,000 $ 14,813,000 $ 89,861,000 $ 26,498,000 $ — $ 1,267,801,000 The following table presents allowance for loan losses activity by class for the three months ended March 31, 2019 , and allowance for loan loss balances by class and related loan balances by class as of March 31, 2019 : Commercial Municipal Residential Home Equity Line of Credit Consumer Unallocated Total Real Estate Construction Other Term Construction For the three months ended March 31, 2019 Beginning balance $ 3,567,000 $ 255,000 $ 3,541,000 $ 24,000 $ 1,235,000 $ 34,000 $ 730,000 $ 630,000 $ 1,216,000 $ 11,232,000 Charge offs — — 1,000 — 49,000 — 38,000 63,000 — 151,000 Recoveries 8,000 — 1,000 — 3,000 — 1,000 21,000 — 34,000 Provision (credit) 57,000 70,000 (111,000 ) 1,000 (75,000 ) (4,000 ) (63,000 ) 72,000 428,000 375,000 Ending balance $ 3,632,000 $ 325,000 $ 3,430,000 $ 25,000 $ 1,114,000 $ 30,000 $ 630,000 $ 660,000 $ 1,644,000 $ 11,490,000 Allowance for loan losses as of March 31, 2019 Ending balance specifically evaluated for impairment $ 233,000 $ — $ 1,485,000 $ — $ 348,000 $ — $ 7,000 $ 2,000 $ — $ 2,075,000 Ending balance collectively evaluated for impairment $ 3,399,000 $ 325,000 $ 1,945,000 $ 25,000 $ 766,000 $ 30,000 $ 623,000 $ 658,000 $ 1,644,000 $ 9,415,000 Related loan balances as of March 31, 2019 Ending balance $ 357,760,000 $ 34,231,000 $ 205,462,000 $ 54,246,000 $ 474,241,000 $ 18,450,000 $ 95,692,000 $ 24,557,000 $ — $ 1,264,639,000 Ending balance specifically evaluated for impairment $ 9,957,000 $ 1,007,000 $ 7,653,000 $ — $ 10,919,000 $ — $ 1,030,000 $ 2,000 $ — $ 30,568,000 Ending balance collectively evaluated for impairment $ 347,803,000 $ 33,224,000 $ 197,809,000 $ 54,246,000 $ 463,322,000 $ 18,450,000 $ 94,662,000 $ 24,555,000 $ — $ 1,234,071,000

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2020
Share-based Payment Arrangement [Abstract]
Schedule of Nonvested Restricted Stock Units Activity	As of March 31, 2020 , 184,487 shares of restricted stock had been granted under the 2010 Plan, of which 71,374 shares remain restricted as of March 31, 2020 as detailed in the following table: Year Granted Vesting Term (In Years) Shares Remaining Term (In Years) 2015 5.0 527 0.3 2016 5.0 10,874 0.8 2017 5.0 7,017 1.8 2018 3.0 5,371 0.9 2018 4.0 2,068 1.8 2018 5.0 6,184 2.8 2019 2.0 1,484 0.8 2019 3.0 16,254 1.8 2020 1.0 2,309 0.8 2020 2.0 694 1.8 2020 3.0 18,592 2.8 71,374 2.0

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Basic and Diluted Earnings per Share (EPS)	The following table sets forth the computation of basic and diluted earnings per share (EPS) for the three months ended March 31, 2020 and 2019 : Income (Numerator) Shares (Denominator) Per-Share Amount For the three months ended March 31, 2020 Net income as reported $ 6,495,000 Basic EPS: Income available to common shareholders 6,495,000 10,844,600 $ 0.60 Effect of dilutive securities: restricted stock 69,753 Diluted EPS: Income available to common shareholders plus assumed conversions $ 6,495,000 10,914,353 $ 0.60 For the three months ended March 31, 2019 Net income as reported $ 6,156,000 Basic EPS: Income available to common shareholders 6,156,000 10,802,782 $ 0.57 Effect of dilutive securities: restricted stock 73,953 Diluted EPS: Income available to common shareholders plus assumed conversions $ 6,156,000 10,876,735 $ 0.57

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 2020
Retirement Benefits, Description [Abstract]
Accumulated Post-retirement Benefit Obligation and Funded Status	The following table sets forth the accumulated postretirement benefit obligation and funded status: At or for the three months ended March 31, 2020 2019 Change in benefit obligation Benefit obligation at beginning of year $ 1,581,000 $ 1,599,000 Interest cost 16,000 17,000 Benefits paid (27,000 ) (28,000 ) Benefit obligation at end of period $ 1,570,000 $ 1,588,000 Funded status Benefit obligation at end of period $ (1,570,000 ) $ (1,588,000 ) Unamortized gain (31,000 ) (47,000 ) Accrued benefit cost at end of period $ (1,601,000 ) $ (1,635,000 )
Schedule of Net Pension Costs	The following table sets forth the net periodic pension cost: For the three months ended March 31, 2020 2019 Components of net periodic benefit cost Interest cost $ 16,000 $ 17,000 Net periodic benefit cost $ 16,000 $ 17,000
Schedule of Net Periodic Benefit Cost Not Yet Recognized	Amounts not yet reflected in net periodic benefit cost and included in accumulated other comprehensive income are as follows: March 31, December 31, 2019 March 31, Unamortized net actuarial gain $ 31,000 $ 31,000 $ 47,000 Deferred tax expense (7,000 ) (7,000 ) (10,000 ) Net unrecognized postretirement benefits included in accumulated other comprehensive income $ 24,000 $ 24,000 $ 37,000

Other Comprehensive Income (L_2

Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table summarizes activity in the unrealized gain or loss on available for sale securities included in other comprehensive income (loss) for the three months ended March 31, 2020 and 2019 . For the three months ended March 31, 2020 2019 Balance at beginning of period $ 3,657,000 $ (5,051,000 ) Unrealized gains arising during the period 6,109,000 4,446,000 Reclassification of net realized gains during the period (752,000 ) — Related deferred taxes (1,124,000 ) (934,000 ) Net change 4,233,000 3,512,000 Balance at end of period $ 7,890,000 $ (1,539,000 ) The following table summarizes activity in the unrealized loss on securities transferred from available for sale to held to maturity included in other comprehensive income (loss) for the three months ended March 31, 2020 and 2019 . For the three months ended March 31, 2020 2019 Balance at beginning of period $ (182,000 ) $ (197,000 ) Amortization of net unrealized gains 10,000 4,000 Related deferred taxes (2,000 ) (1,000 ) Net change 8,000 3,000 Balance at end of period $ (174,000 ) $ (194,000 ) The following table presents the effect of the Company's derivative financial instruments included in other comprehensive income (loss) for the three months ended March 31, 2020 and 2019 . For the three months ended March 31, 2020 2019 Balance at beginning of period $ 97,000 $ 1,438,000 Unrealized losses on cash flow hedging derivatives arising during the period (6,165,000 ) (589,000 ) Related deferred taxes 1,295,000 124,000 Net change (4,870,000 ) (465,000 ) Balance at end of period $ (4,773,000 ) $ 973,000 The following table summarizes activity in the unrealized gain or loss on postretirement benefits included in other comprehensive income (loss) for the three months ended March 31, 2020 and 2019 . For the three months ended March 31, 2020 2019 Unrecognized postretirement benefits at beginning of period $ 24,000 $ 37,000 Amortization of unrecognized transition obligation — — Change in unamortized net actuarial gain (loss) — — Related deferred taxes — — Unrecognized postretirement benefits at end of period $ 24,000 $ 37,000

Financial Derivative Instrume_2

Financial Derivative Instruments (Tables)	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	At March 31, 2020 there were two customer loan swap arrangements in place, detailed below: March 31, 2020 December 31, 2019 March 31, 2019 Presentation on Consolidated Balance Sheet Number of Positions Notional Amount Fair Value Number of Positions Notional Amount Fair Value Number of Positions Notional Amount Fair Value Pay Fixed, Receive Variable Other Liabilities 2 $ 16,394,000 $ (3,280,000 ) 2 $ 16,374,000 $ (1,205,000 ) — $ — $ — Receive Fixed, Pay Variable Other Assets 2 16,394,000 3,280,000 2 16,374,000 1,205,000 — — — Total 4 $ 32,588,000 $ — 4 $ 32,748,000 $ — — $ — $ — The details of the interest rate swap agreements are as follows: March 31, 2020 December 31, 2019 March 31, 2019 Effective Date Maturity Date Variable Index Received Fixed Rate Paid Presentation on Consolidated Balance Sheet Notional Amount Fair Value Notional Amount Fair Value Notional Amount Fair Value 06/05/2018 12/05/2019 1-Month USD LIBOR 2.466 % Other Liabilities $ — $ — $ — $ — $ 25,000,000 $ (7,000 ) 06/27/2016 06/27/2021 1-Month USD LIBOR 0.893 % Other (Liabilities) Assets 20,000,000 (151,000 ) 20,000,000 199,000 20,000,000 586,000 06/28/2016 06/28/2021 1-Month USD LIBOR 0.940 % Other (Liabilities) Assets 30,000,000 (244,000 ) 30,000,000 278,000 30,000,000 847,000 06/05/2018 06/05/2020 1-Month USD LIBOR 2.547 % Other Liabilities — — 25,000,000 (96,000 ) 25,000,000 (57,000 ) 06/05/2018 12/05/2020 1-Month USD LIBOR 2.603 % Other Liabilities — — 25,000,000 (234,000 ) 25,000,000 (137,000 ) 12/05/2019 12/05/2022 3-Month USD LIBOR 1.779 % Other Liabilities — — 25,000,000 (98,000 ) — — 08/02/2019 08/02/2024 1-Month USD LIBOR 1.590 % Other Liabilities 12,500,000 (663,000 ) 12,500,000 (11,000 ) — — 08/05/2019 08/05/2024 1-Month USD LIBOR 1.420 % Other (Liabilities) Assets 12,500,000 (571,000 ) 12,500,000 85,000 — — 02/12/2020 02/12/2023 3-Month USD LIBOR 1.486 % Other Liabilities 25,000,000 (748,000 ) — — — — 02/12/2020 02/12/2024 3-Month USD LIBOR 1.477 % Other Liabilities 25,000,000 (972,000 ) — — — — 06/28/2021 06/28/2026 1-Month USD LIBOR 1.158 % Other Liabilities 50,000,000 (1,569,000 ) — — — — 03/13/2020 03/13/2025 3-Month USD LIBOR 0.855 % Other Liabilities 25,000,000 (463,000 ) — — — — 03/13/2020 03/13/2030 3-Month USD LIBOR 1.029 % Other Liabilities 20,000,000 (661,000 ) — — — — $ 220,000,000 $ (6,042,000 ) $ 150,000,000 $ 123,000 $ 125,000,000 1,232,000

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	3 Months Ended
	Mar. 31, 2020
Transfers and Servicing [Abstract]
Reconciliation of Mortgage Servicing Assets	Mortgage servicing rights are included in other assets and detailed in the following table: March 31, December 31, March 31, Mortgage servicing rights $ 6,269,000 $ 6,140,000 $ 5,776,000 Accumulated amortization (4,660,000 ) (4,594,000 ) (4,420,000 ) $ 1,609,000 $ 1,546,000 $ 1,356,000

Certificates of Deposit (Tables

Certificates of Deposit (Tables)	3 Months Ended
	Mar. 31, 2020
Banking and Thrift [Abstract]
Certificates of Deposit	The following table represents the breakdown of certificates of deposit at March 31, 2020 and 2019 , and at December 31, 2019 : March 31, 2020 December 31, 2019 March 31, 2019 Certificates of deposit < $100,000 $ 274,621,000 $ 277,225,000 $ 398,689,000 Certificates $100,000 to $250,000 364,530,000 345,241,000 238,429,000 Certificates $250,000 and over 71,787,000 67,513,000 75,358,000 $ 710,938,000 $ 689,979,000 $ 712,476,000

Fair Value (Tables)

Fair Value (Tables)	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured on Recurring Basis Measured at Fair Value	The following tables present the balances of assets and liabilities that were measured at fair value on a recurring basis as of March 31, 2020 , December 31, 2019 and March 31, 2019 . At March 31, 2020 Level 1 Level 2 Level 3 Total Securities available for sale U.S. Government-sponsored agencies $ — $ 7,552,000 $ — $ 7,552,000 Mortgage-backed securities — 285,152,000 — 285,152,000 State and political subdivisions — 20,224,000 — 20,224,000 Total securities available for sale — 312,928,000 — 312,928,000 Customer loan interest swap agreements — 3,280,000 — 3,280,000 Total interest rate swap agreements $ — $ 3,280,000 $ — $ 3,280,000 Total assets $ — $ 316,208,000 $ — $ 316,208,000 At March 31, 2020 Level 1 Level 2 Level 3 Total Interest rate swap agreements $ — $ 9,322,000 $ — $ 9,322,000 Total liabilities $ — $ 9,322,000 $ — $ 9,322,000 At December 31, 2019 Level 1 Level 2 Level 3 Total Securities available for sale U.S. Government-sponsored agencies $ — $ 7,398,000 $ — $ 7,398,000 Mortgage-backed securities — 326,617,000 — 326,617,000 State and political subdivisions — 26,505,000 — 26,505,000 Total securities available for sale — 360,520,000 — 360,520,000 Interest rate swap agreements — 562,000 — 562,000 Customer loan interest swap agreements — 1,205,000 1,205,000 Total interest rate swap agreements 1,767,000 1,767,000 Total assets $ — $ 362,287,000 $ — $ 362,287,000 At December 31, 2019 Level 1 Level 2 Level 3 Total Interest rate swap agreements $ — $ 439,000 $ — $ 439,000 Customer loan interest swap agreements $ 1,205,000 $ 1,205,000 Total liabilities $ — $ 1,644,000 $ — $ 1,644,000 At March 31, 2019 Level 1 Level 2 Level 3 Total Securities available for sale U.S. Treasury and agency $ — $ 5,016,000 $ — $ 5,016,000 Mortgage-backed securities — 315,423,000 — 315,423,000 State and political subdivisions — 4,837,000 — 4,837,000 Total securities available for sale — 325,276,000 — 325,276,000 Interest rate swap agreements — 1,433,000 — 1,433,000 Total assets $ — $ 326,709,000 $ — $ 326,709,000 At March 31, 2019 Level 1 Level 2 Level 3 Total Interest rate swap agreements $ — $ 201,000 $ — $ 201,000 Total liabilities $ — $ 201,000 $ — $ 201,000
Assets Measured on Nonrecurring Basis Measured at Fair Value	The following tables include assets measured at fair value on a nonrecurring basis that have had a fair value adjustment since their initial recognition. Other real estate owned is presented net of an allowance of $0 at March 31, 2020 , 2019 and December 31, 2019 . Only collateral-dependent impaired loans with a related specific allowance for loan losses or a partial charge off are included in impaired loans for purposes of fair value disclosures. Impaired loans below are presented net of specific allowances of $706,000 , $1,916,000 and $1,822,000 at March 31, 2020 , December 31, 2019 , and March 31, 2019 , respectively. At March 31, 2020 Level 1 Level 2 Level 3 Total Other real estate owned $ — $ 316,000 $ — $ 316,000 Impaired loans — 1,051,000 — 1,051,000 Total assets $ — $ 1,367,000 $ — $ 1,367,000 At December 31, 2019 Level 1 Level 2 Level 3 Total Other real estate owned $ — $ 279,000 $ — $ 279,000 Impaired loans — 6,579,000 — 6,579,000 Total assets $ — $ 6,858,000 $ — $ 6,858,000 At March 31, 2019 Level 1 Level 2 Level 3 Total Other real estate owned $ — $ 584,000 $ — $ 584,000 Impaired loans — 6,519,000 — 6,519,000 Total assets $ — $ 7,103,000 $ — $ 7,103,000
Estimated Fair Value of Financial Instruments	The carrying amount and estimated fair values for financial instruments as of March 31, 2020 were as follows: Carrying value Estimated fair value Level 1 Level 2 Level 3 Financial assets Securities to be held to maturity $ 341,592,000 $ 349,248,000 $ — $ 349,248,000 $ — Loans (net of allowance for loan losses) Commercial Real estate 378,049,000 371,916,000 — 7,000 371,909,000 Construction 43,397,000 42,693,000 — — 42,693,000 Other 234,940,000 233,411,000 — — 233,411,000 Municipal 43,502,000 41,909,000 — — 41,909,000 Residential Term 499,478,000 503,098,000 — 335,000 502,763,000 Construction 15,163,000 15,304,000 — — 15,304,000 Home equity line of credit 89,442,000 89,407,000 — 700,000 88,707,000 Consumer 28,379,000 26,933,000 — 9,000 26,924,000 Total loans 1,332,350,000 1,324,671,000 — 1,051,000 1,323,620,000 Mortgage servicing rights 1,609,000 2,126,000 — 2,126,000 — Financial liabilities Local certificates of deposit $ 290,440,000 $ 290,886,000 $ — $ 290,886,000 $ — National certificates of deposit 420,498,000 429,110,000 — 429,110,000 — Total certificates of deposits 710,938,000 719,996,000 — 719,996,000 — Repurchase agreements 37,937,000 37,494,000 — 37,494,000 — Federal Home Loan Bank advances 210,103,000 211,228,000 — 211,228,000 — Total borrowed funds 248,040,000 248,722,000 — 248,722,000 — The carrying amounts and estimated fair values for financial instruments as of December 31, 2019 were as follows: Carrying value Estimated fair value Level 1 Level 2 Level 3 Financial assets Securities to be held to maturity $ 281,606,000 $ 287,045,000 $ — $ 287,045,000 $ — Loans (net of allowance for loan losses) Commercial Real estate 368,645,000 364,626,000 — 2,000 364,624,000 Construction 37,678,000 37,366,000 — — 37,366,000 Other 215,068,000 212,548,000 — 5,046,000 207,502,000 Municipal 41,258,000 40,552,000 — — 40,552,000 Residential Term 491,315,000 491,359,000 — 577,000 490,782,000 Construction 14,785,000 14,786,000 — — 14,786,000 Home equity line of credit 91,149,000 90,959,000 — 954,000 90,005,000 Consumer 25,538,000 23,489,000 — — 23,489,000 Total loans 1,285,436,000 1,275,685,000 — 6,579,000 1,269,106,000 Mortgage servicing rights 1,546,000 2,089,000 — 2,089,000 — Financial liabilities Local certificates of deposit $ 285,602,000 $ 281,480,000 $ — $ 281,480,000 $ — National certificates of deposit 404,377,000 412,337,000 — 412,337,000 — Total deposits 689,979,000 693,817,000 — 693,817,000 — Repurchase agreements 37,450,000 37,450,000 — 37,450,000 — Federal Home Loan Bank advances 147,505,000 140,063,000 — 140,063,000 — Total borrowed funds 184,955,000 177,513,000 — 177,513,000 — The carrying amount and estimated fair values for financial instruments as of March 31, 2019 were as follows: Carrying value Estimated fair value Level 1 Level 2 Level 3 Financial assets Securities to be held to maturity $ 281,219,000 $ 282,568,000 $ — $ 282,568,000 $ — Loans (net of allowance for loan losses) Commercial Real estate 353,521,000 347,398,000 — 422,000 346,976,000 Construction 33,852,000 33,266,000 — — 33,266,000 Other 201,459,000 199,700,000 — 5,458,000 194,242,000 Municipal 54,217,000 53,179,000 — — 53,179,000 Residential Term 472,941,000 463,150,000 — 625,000 462,525,000 Construction 18,415,000 18,034,000 — — 18,034,000 Home equity line of credit 94,957,000 92,834,000 — 14,000 92,820,000 Consumer 23,787,000 22,124,000 — — 22,124,000 Total loans 1,253,149,000 1,229,685,000 — 6,519,000 1,223,166,000 Mortgage servicing rights 1,356,000 2,410,000 — 2,410,000 — Financial liabilities Local certificates of deposit 293,980,000 293,325,000 — 293,325,000 — National certificates of deposit 418,496,000 419,285,000 — 419,285,000 — Total certificates of deposits 712,476,000 712,610,000 — 712,610,000 — Repurchase agreements 30,309,000 30,276,000 — 30,276,000 — Federal Home Loan Bank advances 140,110,000 139,565,000 — 139,565,000 — Total borrowed funds 170,419,000 169,841,000 — 169,841,000 —

Investment Securities - Amortiz

Investment Securities - Amortized Cost and Estimated Fair Value of Available for Sale Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 302,941	$ 355,890	$ 327,224
Unrealized Gains	10,176	5,565	1,414
Unrealized Losses	(189)	(935)	(3,362)
Fair Value (Estimated)	312,928	360,520	325,276
U.S. Government-sponsored agencies
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	7,500	7,500	5,000
Unrealized Gains	52	0	16
Unrealized Losses	0	(102)	0
Fair Value (Estimated)	7,552	7,398	5,016
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	276,235	323,277	317,269
Unrealized Gains	9,106	4,173	1,394
Unrealized Losses	(189)	(833)	(3,240)
Fair Value (Estimated)	285,152	326,617	315,423
State and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	19,206	25,113	4,955
Unrealized Gains	1,018	1,392	4
Unrealized Losses	0	0	(122)
Fair Value (Estimated)	$ 20,224	$ 26,505	$ 4,837

Investment Securities - Amort_2

Investment Securities - Amortized Cost and Estimated Fair Value of Held to Maturity Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 341,592	$ 281,606	$ 281,219
Unrealized Gains	8,008	5,590	3,582
Unrealized Losses	(352)	(151)	(2,233)
Fair Value (Estimated)	349,248	287,045	282,568
U.S. Government-sponsored agencies
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	35,981	32,840	31,155
Unrealized Gains	207	47	48
Unrealized Losses	0	(26)	(280)
Fair Value (Estimated)	36,188	32,861	30,923
Mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	51,142	14,431	17,560
Unrealized Gains	1,392	450	372
Unrealized Losses	(7)	(16)	(146)
Fair Value (Estimated)	52,527	14,865	17,786
State and political subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	239,719	219,585	225,204
Unrealized Gains	5,819	4,936	3,162
Unrealized Losses	(345)	(109)	(1,801)
Fair Value (Estimated)	245,193	224,412	226,565
Corporate securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	14,750	14,750	7,300
Unrealized Gains	590	157	0
Unrealized Losses	0	0	(6)
Fair Value (Estimated)	$ 15,340	$ 14,907	$ 7,294

Investment Securities - Amort_3

Investment Securities - Amortized Cost and Estimated Fair Value of Restricted Equity Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Federal Home Loan Bank Stock	$ 8,957	$ 7,945	$ 7,945
Federal Reserve Bank Stock	1,037	1,037	1,037
Restricted equity securities	$ 9,994	$ 8,982	$ 8,982

Investment Securities - Contrac

Investment Securities - Contractual Maturities of Investment Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Debt Securities, Available-for-sale, Amortized Cost, Fiscal Year Maturity [Abstract]
Due in 1 year or less, Securities available for sale, Amortized Cost	$ 66	$ 127	$ 0
Due in 1 to 5 years, Securities available for sale, Amortized Cost	25,221	36,534	15,670
Due in 5 to 10 years, Securities available for sale, Amortized Cost	62,462	93,134	107,978
Due after 10 years, Securities available for sale, Amortized Cost	215,192	226,095	203,576
Amortized Cost	302,941	355,890	327,224
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Due in 1 year or less, Securities available for sale, Fair Value (Estimated)	66	127	0
Due in 1 to 5 years, Securities available for sale, Fair Value (Estimated)	26,159	36,778	15,736
Due in 5 to 10 years, Securities available for sale, Fair Value (Estimated)	65,032	95,014	108,698
Due after 10 years, Securities available for sale, Fair Value (Estimated)	221,671	228,601	200,842
Securities available for sale, Fair Value (Estimated)	312,928	360,520	325,276
Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract]
Due in 1 year or less, Securities to be held to maturity, Amortized Cost	1,331	1,334	1,429
Due in 1 to 5 years, Securities to be held to maturity, Amortized Cost	27,854	25,860	21,096
Due in 5 to 10 years, Securities to be held to maturity, Amortized Cost	184,037	179,133	176,967
Due after 10 years, Securities to be held to maturity, Amortized Cost	128,370	75,279	81,727
Securities to be held to maturity, Amortized Cost	341,592	281,606	281,219
Debt Securities, Held-to-maturity, Maturity, Fair Value [Abstract]
Due in 1 year or less, Securities to be held to maturity, Fair Value (Estimated)	1,337	1,338	1,431
Due in 1 to 5 years, Securities to be held to maturity, Fair Value (Estimated)	28,361	26,323	21,203
Due in 5 to 10 years, Securities to be held to maturity, Fair Value (Estimated)	189,214	182,834	178,044
Due after 10 years, Securities to be held to maturity, Fair Value (Estimated)	130,336	76,550	81,890
Securities to be held to maturity, Fair Value (Estimated)	$ 349,248	$ 287,045	$ 282,568

Investment Securities - Additio

Investment Securities - Additional Information (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020USD ($)securitystate	Mar. 31, 2019USD ($)security	Dec. 31, 2019USD ($)security	Sep. 30, 2014USD ($)
Debt Securities, Available-for-sale [Line Items]
Number of securities temporarily impaired (security) | security	70	291	86
Number of securities temporarily impaired for twelve months or more (security) | security	14	274	28
Length of time securities temporarily impaired	12 months	12 months	12 months
Amortized cost of transferred securities from available-for-sale to held-to-maturity				$ 89,780
Fair value of transferred securities from available-for-sale to held-to-maturity				89,757
Net unrealized loss, net of taxes on transferred securities				$ 15
Unamortized balance of net unrealized losses	$ 174	$ 194	$ 182
Number of states in New England where FHLB serve (state) | state	6
FHLB stock investment	$ 8,957	$ 7,945	7,945
State and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Percentage of overall security holdings downgraded		0.09%
Other equity securities
Debt Securities, Available-for-sale [Line Items]
Fair value of securities pledged as collateral	$ 208,376	$ 189,711	$ 214,173

Investment Securities - Gains a

Investment Securities - Gains and Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales of securities	$ 68,620	$ 0
Gross realized gains	1,098	0
Gross realized losses	(346)	0
Net gain	752	0
Related income taxes	$ 158	$ 0

Investment Securities - Tempora

Investment Securities - Temporarily Impaired Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	$ 22,519	$ 77,148	$ 28,783
Unrealized Losses (Less than 12 months)	(372)	(588)	(147)
Fair Value (Estimated) (12 months or more)	7,424	19,000	267,315
Unrealized Losses (12 months or more)	(169)	(498)	(5,448)
Fair Value (Estimated)	29,943	96,148	296,098
Unrealized Losses	(541)	(1,086)	(5,595)
U.S. Government-sponsored agencies
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)		12,372	0
Unrealized Losses (Less than 12 months)		(128)	0
Fair Value (Estimated) (12 months or more)		0	10,875
Unrealized Losses (12 months or more)		0	(280)
Fair Value (Estimated)		12,372	10,875
Unrealized Losses		(128)	(280)
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	2,963	54,244	24,525
Unrealized Losses (Less than 12 months)	(27)	(359)	(138)
Fair Value (Estimated) (12 months or more)	7,424	18,696	198,272
Unrealized Losses (12 months or more)	(169)	(490)	(3,248)
Fair Value (Estimated)	10,387	72,940	222,797
Unrealized Losses	(196)	(849)	(3,386)
State and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	19,556	10,532	1,264
Unrealized Losses (Less than 12 months)	(345)	(101)	(3)
Fair Value (Estimated) (12 months or more)	0	304	58,168
Unrealized Losses (12 months or more)	0	(8)	(1,920)
Fair Value (Estimated)	19,556	10,836	59,432
Unrealized Losses	$ (345)	$ (109)	(1,923)
Corporate securities
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)			2,994
Unrealized Losses (Less than 12 months)			(6)
Fair Value (Estimated) (12 months or more)			0
Unrealized Losses (12 months or more)			0
Fair Value (Estimated)			2,994
Unrealized Losses			$ (6)

Loans - Loan Portfolio (Details

Loans - Loan Portfolio (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Schedule of Financing Receivables [Line Items]
Loans	$ 1,344,208	$ 1,297,075	$ 1,264,639
Percentage of loans receivable, by type	100.00%	100.00%	100.00%
Commercial | Real estate
Schedule of Financing Receivables [Line Items]
Loans	$ 382,753	$ 372,810	$ 357,760
Percentage of loans receivable, by type	28.50%	28.70%	28.30%
Commercial | Construction
Schedule of Financing Receivables [Line Items]
Loans	$ 43,913	$ 38,084	$ 34,231
Percentage of loans receivable, by type	3.30%	3.00%	2.70%
Commercial | Other
Schedule of Financing Receivables [Line Items]
Loans	$ 237,896	$ 218,773	$ 205,462
Percentage of loans receivable, by type	17.70%	16.90%	16.20%
Municipal
Schedule of Financing Receivables [Line Items]
Loans	$ 43,537	$ 41,288	$ 54,246
Percentage of loans receivable, by type	3.20%	3.20%	4.30%
Residential | Construction
Schedule of Financing Receivables [Line Items]
Loans	$ 15,202	$ 14,813	$ 18,450
Percentage of loans receivable, by type	1.10%	1.20%	1.50%
Residential | Term
Schedule of Financing Receivables [Line Items]
Loans	$ 500,971	$ 492,455	$ 474,241
Percentage of loans receivable, by type	37.30%	37.90%	37.50%
Home equity line of credit
Schedule of Financing Receivables [Line Items]
Loans	$ 90,674	$ 92,349	$ 95,692
Percentage of loans receivable, by type	6.70%	7.10%	7.60%
Consumer
Schedule of Financing Receivables [Line Items]
Loans	$ 29,262	$ 26,503	$ 24,557
Percentage of loans receivable, by type	2.20%	2.00%	1.90%

Loans - Narrative (Details)

Loans - Narrative (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020USD ($)loan	Mar. 31, 2019USD ($)loan	Dec. 31, 2019USD ($)loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net deferred loan costs	$ 7,551	$ 6,878	$ 7,419
Qualifying first mortgage loans	401,555	321,290	296,871
Loans pledged as collateral	$ 260,703	$ 251,591	$ 240,133
Loans classified as TDR (loan) | loan	81	80	81
Value of loans classified as TDR	$ 14,968	$ 25,386	$ 21,424
Number of loans | loan	22	10
Value of TDR loans more than 30 days past due	$ 3,622	$ 1,129
Number of TDR loans more than 30 days past due (loan) | loan	1	3
Number of loans placed on TDR status (loan) | loan	2	5
Number of TDR loans involved in bankruptcy (loan) | loan	9
Value of TDR loans involved in bankruptcy	$ 978
Number of TDR loans on non-accrual status (loan) | loan	24
Value of TDR loans on non-accrual status	$ 2,525
Number of TDR loans in the process of foreclosure (loan) | loan	2
Loans classified as TDRs in process of foreclosure	$ 350
Number of mortgage loans in the process of foreclosure (loan) | loan	15	10
Value of mortgage loans in the process of foreclosure	$ 2,284	$ 1,101
Unallocated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of days past due	30 days	30 days

Loans - Past-due Status of Loan

Loans - Past-due Status of Loans by Class (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Schedule of Financing Receivables [Line Items]
All Past Due	$ 21,829	$ 15,017	$ 11,280
Current	1,322,379	1,282,058	1,253,359
Total	1,344,208	1,297,075	1,264,639
90 Days or More & Accruing	3,770	1,560	4
30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	10,758	6,139	6,048
60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	750	2,092	2,215
90 Days or More Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	10,321	6,786	3,017
Commercial | Real estate
Schedule of Financing Receivables [Line Items]
All Past Due	4,234	1,774	1,728
Current	378,519	371,036	356,032
Total	382,753	372,810	357,760
90 Days or More & Accruing	22	0	0
Commercial | Real estate | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	2,935	786	282
Commercial | Real estate | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	2	377	825
Commercial | Real estate | 90 Days or More Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	1,297	611	621
Commercial | Construction
Schedule of Financing Receivables [Line Items]
All Past Due	305	271	333
Current	43,608	37,813	33,898
Total	43,913	38,084	34,231
90 Days or More & Accruing	0	0	0
Commercial | Construction | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	59	0	47
Commercial | Construction | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	0	14	0
Commercial | Construction | 90 Days or More Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	246	257	286
Commercial | Other
Schedule of Financing Receivables [Line Items]
All Past Due	5,868	5,028	1,030
Current	232,028	213,745	204,432
Total	237,896	218,773	205,462
90 Days or More & Accruing	3,536	1,464	0
Commercial | Other | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	1,678	2,764	664
Commercial | Other | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	295	465	63
Commercial | Other | 90 Days or More Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	3,895	1,799	303
Municipal
Schedule of Financing Receivables [Line Items]
All Past Due	0	0	0
Current	43,537	41,288	54,246
Total	43,537	41,288	54,246
90 Days or More & Accruing	0	0	0
Municipal | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	0	0	0
Municipal | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	0	0	0
Municipal | 90 Days or More Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	0	0	0
Residential | Construction
Schedule of Financing Receivables [Line Items]
All Past Due	0	0	0
Current	15,202	14,813	18,450
Total	15,202	14,813	18,450
90 Days or More & Accruing	0	0	0
Residential | Construction | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	0	0	0
Residential | Construction | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	0	0	0
Residential | Construction | 90 Days or More Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	0	0	0
Residential | Term
Schedule of Financing Receivables [Line Items]
All Past Due	7,761	4,640	5,246
Current	493,210	487,815	468,995
Total	500,971	492,455	474,241
90 Days or More & Accruing	192	86	0
Residential | Term | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	4,270	1,129	2,659
Residential | Term | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	171	1,132	1,153
Residential | Term | 90 Days or More Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	3,320	2,379	1,434
Home equity line of credit
Schedule of Financing Receivables [Line Items]
All Past Due	3,311	2,957	2,365
Current	87,363	89,392	93,327
Total	90,674	92,349	95,692
90 Days or More & Accruing	0	0	0
Home equity line of credit | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	1,566	1,169	1,985
Home equity line of credit | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	264	58	11
Home equity line of credit | 90 Days or More Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	1,481	1,730	369
Consumer
Schedule of Financing Receivables [Line Items]
All Past Due	350	347	578
Current	28,912	26,156	23,979
Total	29,262	26,503	24,557
90 Days or More & Accruing	20	10	4
Consumer | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	250	291	411
Consumer | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	18	46	163
Consumer | 90 Days or More Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	$ 82	$ 10	$ 4

Loans - Nonaccrual Loans (Detai

Loans - Nonaccrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	$ 10,048	$ 16,649	$ 13,736
Commercial | Real estate
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	1,748	1,784	1,468
Commercial | Construction
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	246	256	286
Commercial | Other
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	457	6,534	7,067
Municipal
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	0	0	0
Residential | Construction
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	0	0	0
Residential | Term
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	5,615	5,899	4,211
Home equity line of credit
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	1,916	2,171	702
Consumer
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	$ 66	$ 5	$ 2

Loans - Impaired Loans by Class

Loans - Impaired Loans by Class (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded investment, with no related allowance	$ 17,836	$ 20,042	$ 18,212
Recorded investment, with related allowance	4,657	10,526	11,062
Recorded Investment	22,493	30,568	29,274
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no related allowance	19,975	21,936	20,330
Unpaid principal balance with related allowance	4,801	11,056	11,848
Unpaid Principal Balance	24,776	32,992	32,178
Related Allowance	992	2,075	2,213
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment, with no related allowance	17,867	20,748	20,542
Average recorded investment, with related allowance	8,716	10,601	11,015
Average Recorded Investment	26,583	31,349	31,557
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract]
Recognized interest income, with no related allowance	121	181	593
Recognized interest income, with related allowance	31	43	142
Recognized Interest Income	152	224	735
Commercial | Real estate
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded investment, with no related allowance	5,162	8,391	5,235
Recorded investment, with related allowance	1,061	1,566	1,074
Recorded Investment	6,223	9,957	6,309
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no related allowance	5,421	8,779	5,492
Unpaid principal balance with related allowance	1,082	1,583	1,093
Unpaid Principal Balance	6,503	10,362	6,585
Related Allowance	230	233	251
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment, with no related allowance	5,157	8,741	7,611
Average recorded investment, with related allowance	1,064	1,215	1,528
Average Recorded Investment	6,221	9,956	9,139
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract]
Recognized interest income, with no related allowance	47	90	228
Recognized interest income, with related allowance	8	26	60
Recognized Interest Income	55	116	288
Commercial | Construction
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded investment, with no related allowance	246	1,007	958
Recorded investment, with related allowance	701	0	0
Recorded Investment	947	1,007	958
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no related allowance	265	1,007	970
Unpaid principal balance with related allowance	701	0	0
Unpaid Principal Balance	966	1,007	970
Related Allowance	3	0	0
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment, with no related allowance	717	817	936
Average recorded investment, with related allowance	234	0	0
Average Recorded Investment	951	817	936
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract]
Recognized interest income, with no related allowance	0	12	47
Recognized interest income, with related allowance	10	0	0
Recognized Interest Income	10	12	47
Commercial | Other
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded investment, with no related allowance	818	709	756
Recorded investment, with related allowance	172	6,944	6,319
Recorded Investment	990	7,653	7,075
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no related allowance	848	734	786
Unpaid principal balance with related allowance	194	7,315	6,925
Unpaid Principal Balance	1,042	8,049	7,711
Related Allowance	172	1,485	1,273
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment, with no related allowance	793	1,207	965
Average recorded investment, with related allowance	4,269	7,511	6,778
Average Recorded Investment	5,062	8,718	7,743
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract]
Recognized interest income, with no related allowance	3	6	29
Recognized interest income, with related allowance	0	0	0
Recognized Interest Income	3	6	29
Municipal
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded investment, with no related allowance	0	0	0
Recorded investment, with related allowance	0	0	0
Recorded Investment	0	0	0
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no related allowance	0	0	0
Unpaid principal balance with related allowance	0	0	0
Unpaid Principal Balance	0	0	0
Related Allowance	0	0	0
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment, with no related allowance	0	0	0
Average recorded investment, with related allowance	0	0	0
Average Recorded Investment	0	0	0
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract]
Recognized interest income, with no related allowance	0	0	0
Recognized interest income, with related allowance	0	0	0
Recognized Interest Income	0	0	0
Residential | Construction
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded investment, with no related allowance	0	0	0
Recorded investment, with related allowance	0	0	0
Recorded Investment	0	0	0
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no related allowance	0	0	0
Unpaid principal balance with related allowance	0	0	0
Unpaid Principal Balance	0	0	0
Related Allowance	0	0	0
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment, with no related allowance	0	0	0
Average recorded investment, with related allowance	0	0	0
Average Recorded Investment	0	0	0
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract]
Recognized interest income, with no related allowance	0	0	0
Recognized interest income, with related allowance	0	0	0
Recognized Interest Income	0	0	0
Residential | Term
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded investment, with no related allowance	10,378	8,926	10,176
Recorded investment, with related allowance	1,660	1,993	2,263
Recorded Investment	12,038	10,919	12,439
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no related allowance	12,135	10,345	11,931
Unpaid principal balance with related allowance	1,755	2,131	2,412
Unpaid Principal Balance	13,890	12,476	14,343
Related Allowance	233	348	237
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment, with no related allowance	10,015	9,007	10,033
Average recorded investment, with related allowance	1,999	1,845	2,424
Average Recorded Investment	12,014	10,852	12,457
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract]
Recognized interest income, with no related allowance	67	68	269
Recognized interest income, with related allowance	13	17	82
Recognized Interest Income	80	85	351
Home equity line of credit
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded investment, with no related allowance	1,232	1,009	1,087
Recorded investment, with related allowance	996	21	1,401
Recorded Investment	2,228	1,030	2,488
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no related allowance	1,306	1,071	1,151
Unpaid principal balance with related allowance	1,002	25	1,412
Unpaid Principal Balance	2,308	1,096	2,563
Related Allowance	296	7	447
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment, with no related allowance	1,185	976	997
Average recorded investment, with related allowance	1,124	29	283
Average Recorded Investment	2,309	1,005	1,280
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract]
Recognized interest income, with no related allowance	4	5	20
Recognized interest income, with related allowance	0	0	0
Recognized Interest Income	4	5	20
Consumer
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded investment, with no related allowance	0	0	0
Recorded investment, with related allowance	67	2	5
Recorded Investment	67	2	5
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no related allowance	0	0	0
Unpaid principal balance with related allowance	67	2	6
Unpaid Principal Balance	67	2	6
Related Allowance	58	2	5
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment, with no related allowance	0	0	0
Average recorded investment, with related allowance	26	1	2
Average Recorded Investment	26	1	2
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract]
Recognized interest income, with no related allowance	0	0	0
Recognized interest income, with related allowance	0	0	0
Recognized Interest Income	$ 0	$ 0	$ 0

Loans - TDR's by Class and Spec

Loans - TDR's by Class and Specific Reserves (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020USD ($)loan	Mar. 31, 2019USD ($)loan	Dec. 31, 2019USD ($)loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	81	80	81
Balance	$ 14,968	$ 25,386	$ 21,424
Specific Reserves	$ 556	$ 1,607	$ 1,677
Commercial | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	16	17	17
Balance	$ 4,688	$ 8,583	$ 4,836
Specific Reserves	$ 225	$ 107	$ 246
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	1	1	1
Balance	$ 701	$ 721	$ 701
Specific Reserves	$ 3	$ 0	$ 0
Commercial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	7	10	8
Balance	$ 779	$ 7,257	$ 6,932
Specific Reserves	$ 131	$ 1,275	$ 1,231
Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0	0	0
Balance	$ 0	$ 0	$ 0
Specific Reserves	$ 0	$ 0	$ 0
Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0	0	0
Balance	$ 0	$ 0	$ 0
Specific Reserves	$ 0	$ 0	$ 0
Residential | Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	54	49	52
Balance	$ 8,321	$ 8,331	$ 8,472
Specific Reserves	$ 197	$ 225	$ 200
Home equity line of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	3	3	3
Balance	$ 479	$ 494	$ 483
Specific Reserves	$ 0	$ 0	$ 0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0	0	0
Balance	$ 0	$ 0	$ 0
Specific Reserves	$ 0	$ 0	$ 0

Loans - TDR's by Class and Sp_2

Loans - TDR's by Class and Specific Reserves More Than 30 Days Past Due (Details) $ in Thousands	Mar. 31, 2020USD ($)loan	Mar. 31, 2019USD ($)loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	22	10
Balance	$ 3,622	$ 1,129
Specific Reserves	$ 155	$ 170
Commercial | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	2	0
Balance	$ 618	$ 0
Specific Reserves	$ 0	$ 0
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Specific Reserves	$ 0	$ 0
Commercial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	4	4
Balance	$ 540	$ 261
Specific Reserves	$ 131	$ 134
Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Specific Reserves	$ 0	$ 0
Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Specific Reserves	$ 0	$ 0
Residential | Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	15	5
Balance	$ 2,297	$ 701
Specific Reserves	$ 24	$ 36
Home equity line of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	1	1
Balance	$ 167	$ 167
Specific Reserves	$ 0	$ 0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Specific Reserves	$ 0	$ 0

Loans - Pre-Modification and Po

Loans - Pre-Modification and Post-Modification Outstanding Recorded Investment (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)loan	Mar. 31, 2019USD ($)loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	2	5
Pre-Modification Outstanding Recorded Investment	$ 235	$ 573
Post-Modification Outstanding Recorded Investment	190	554
Specific Reserves	$ 0	$ 74
Commercial | Real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	0	0
Specific Reserves	$ 0	$ 0
Commercial | Construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	0	0
Specific Reserves	$ 0	$ 0
Commercial | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	0	0
Specific Reserves	$ 0	$ 0
Municipal
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	0	0
Specific Reserves	$ 0	$ 0
Residential | Construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	0	0
Specific Reserves	$ 0	$ 0
Residential | Term
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	2	5
Pre-Modification Outstanding Recorded Investment	$ 235	$ 573
Post-Modification Outstanding Recorded Investment	190	554
Specific Reserves	$ 0	$ 74
Home equity line of credit
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	0	0
Specific Reserves	$ 0	$ 0
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	0	0
Specific Reserves	$ 0	$ 0

Allowance for Loan Losses - Nar

Allowance for Loan Losses - Narrative (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020USD ($)loan_class	Dec. 31, 2019USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of classes in the loan portfolio | loan_class	8
Allowance for loan and lease losses (as a percentage)	0.51%	0.48%
Allowance for loan and lease losses, period increase (decrease)	$ 585
Allowance for loan losses	$ 11,858	$ 11,639	$ 11,490	$ 11,232
Allowance for loan losses as a percent of total loans	0.88%	0.90%	0.91%
Number of classes in the commercial loan portfolio | loan_class	3
Residential loans typical loan to value range (as a percentage)	80.00%
Number of classes in the residential loan portfolio | loan_class	2
Construction loans accrual to company capital	30.60%
Constructions loan portfolio maximum to company capital	100.00%
Construction and non owner occupied commercial real estate	126.50%
Maximum loan portfolio to company capital	300.00%
Outstanding loans and commitments subject by independent consulting firm	60.00%
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 725	$ 867	$ 660	630
Delinquent period before consumer loans charged off	120 days
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan-to-value ratio	0.80
Amortization term of residential loans	30 years
Delinquent period before residential loans placed on non accrual status	90 days
Delinquent period for loans charged off	180 days
Delinquency period for loans charged off after receipt of notification from bankruptcy court	60 days
Home equity line of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 1,012	1,078	630	730
Loan-to-value ratio	0.80
Loan maturities period	300 months
Unallocated Reserves
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 2,121	$ 1,182	1,644
Total reserve allowance accounted for by loan loss allowances (percent)	17.90%	10.20%
Construction | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 32	$ 25	$ 30	$ 34
Loan maturities period	1 year
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential loans typical loan to value range (as a percentage)	75.00%
Collateralized consumer loans to individuals loan to value maximum range (as a percentage)	80.00%
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential loans typical loan to value range (as a percentage)	80.00%
Collateralized consumer loans to individuals loan to value maximum range (as a percentage)	90.00%

Allowance for Loan Losses - Fin

Allowance for Loan Losses - Financing Receivable and Allowance Element by Class (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 11,858	$ 11,639	$ 11,490	$ 11,232
Specific Reserves on Loans Evaluated Individually for Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	992	2,213	2,075
General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	1,899	1,983	1,955
Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	6,846	6,261	5,816
Unallocated Reserves
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	2,121	1,182	1,644
Commercial | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	3,862	3,742	3,632	3,567
Commercial | Real estate | Specific Reserves on Loans Evaluated Individually for Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	230	251	233
Commercial | Real estate | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	687	729	790
Commercial | Real estate | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	2,945	2,762	2,609
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	424	365	325	255
Commercial | Construction | Specific Reserves on Loans Evaluated Individually for Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	3	0	0
Commercial | Construction | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	80	76	76
Commercial | Construction | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	341	289	249
Commercial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	2,427	3,329	3,430	3,541
Commercial | Other | Specific Reserves on Loans Evaluated Individually for Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	172	1,273	1,485
Commercial | Other | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	426	430	452
Commercial | Other | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	1,829	1,626	1,493
Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	29	27	25	24
Municipal | Specific Reserves on Loans Evaluated Individually for Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	0	0	0
Municipal | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	0	0	0
Municipal | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	29	27	25
Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	32	25	30	34
Residential | Construction | Specific Reserves on Loans Evaluated Individually for Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	0	0	0
Residential | Construction | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	10	5	7
Residential | Construction | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	22	20	23
Residential | Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	1,226	1,024	1,114	1,235
Residential | Term | Specific Reserves on Loans Evaluated Individually for Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	233	237	348
Residential | Term | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	300	153	182
Residential | Term | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	693	634	584
Home equity line of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	1,012	1,078	630	730
Home equity line of credit | Specific Reserves on Loans Evaluated Individually for Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	296	447	7
Home equity line of credit | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	168	130	158
Home equity line of credit | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	548	501	465
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	725	867	660	630
Consumer | Specific Reserves on Loans Evaluated Individually for Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	58	5	2
Consumer | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	228	460	290
Consumer | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	439	402	368
Unallocated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	2,121	1,182	1,644	$ 1,216
Unallocated | Unallocated Reserves
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 2,121	$ 1,182	$ 1,644

Allowance for Loan Losses - Ris

Allowance for Loan Losses - Risk Ratings by Segment (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	$ 708,099	$ 670,955	$ 651,699
1 Strong
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	4,587	4,290	3,673
2 Above Average
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	57,337	57,664	66,386
3 Satisfactory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	126,405	118,920	129,360
4 Average
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	363,753	334,503	294,329
5 Watch
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	129,677	126,222	122,412
6 OAEM
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	4,658	3,148	4,840
7 Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	21,682	26,208	30,576
8 Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	0	0	123
Commercial | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	382,753	372,810	357,760
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	43,913	38,084	34,231
Commercial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	237,896	218,773	205,462
Commercial | 1 Strong | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	0	0	0
Commercial | 1 Strong | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	0	0	0
Commercial | 1 Strong | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	4,559	4,258	3,630
Commercial | 2 Above Average | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	10,222	12,393	10,097
Commercial | 2 Above Average | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	842	794	36
Commercial | 2 Above Average | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	5,933	6,187	4,447
Commercial | 3 Satisfactory | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	83,905	74,709	82,595
Commercial | 3 Satisfactory | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	1,873	2,305	2,352
Commercial | 3 Satisfactory | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	40,255	41,527	43,963
Commercial | 4 Average | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	203,263	205,510	179,290
Commercial | 4 Average | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	26,029	19,017	23,267
Commercial | 4 Average | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	131,664	107,389	89,825
Commercial | 5 Watch | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	68,618	63,582	63,503
Commercial | 5 Watch | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	14,702	15,488	8,290
Commercial | 5 Watch | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	46,357	47,152	50,619
Commercial | 6 OAEM | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	1,834	1,160	2,847
Commercial | 6 OAEM | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	0	0	0
Commercial | 6 OAEM | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	2,824	1,988	1,993
Commercial | 7 Substandard | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	14,911	15,456	19,305
Commercial | 7 Substandard | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	467	480	286
Commercial | 7 Substandard | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	6,304	10,272	10,985
Commercial | 8 Doubtful | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	0	0	123
Commercial | 8 Doubtful | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	0	0	0
Commercial | 8 Doubtful | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	0	0	0
Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	43,537	41,288	54,246
Municipal | 1 Strong
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	28	32	43
Municipal | 2 Above Average
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	40,340	38,290	51,806
Municipal | 3 Satisfactory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	372	379	450
Municipal | 4 Average
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	2,797	2,587	1,947
Municipal | 5 Watch
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	0	0	0
Municipal | 6 OAEM
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	0	0	0
Municipal | 7 Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	0	0	0
Municipal | 8 Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	$ 0	$ 0	$ 0

Allowance for Loan Losses - All

Allowance for Loan Losses - Allowance for Loan Loss Activity by Class (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 11,639	$ 11,232	$ 11,232
Charge offs	255	151	1,120
Recoveries	74	34	277
Provision (credit)	400	375	1,250
Ending balance	11,858	11,490	11,639
Ending balance specifically evaluated for impairment	992	2,075	2,213
Ending balance collectively evaluated for impairment	10,866	9,415	9,426
Total	1,344,208	1,264,639	1,297,075
Ending balance specifically evaluated for impairment	22,493	30,568	29,274
Ending balance collectively evaluated for impairment	1,321,715	1,234,071	1,267,801
Commercial | Real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	3,742	3,567	3,567
Charge offs	0	0	89
Recoveries	0	8	15
Provision (credit)	120	57	249
Ending balance	3,862	3,632	3,742
Ending balance specifically evaluated for impairment	230	233	251
Ending balance collectively evaluated for impairment	3,632	3,399	3,491
Total	382,753	357,760	372,810
Ending balance specifically evaluated for impairment	6,223	9,957	6,309
Ending balance collectively evaluated for impairment	376,530	347,803	366,501
Commercial | Construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	365	255	255
Charge offs	0	0	0
Recoveries	0	0	0
Provision (credit)	59	70	110
Ending balance	424	325	365
Ending balance specifically evaluated for impairment	3	0	0
Ending balance collectively evaluated for impairment	421	325	365
Total	43,913	34,231	38,084
Ending balance specifically evaluated for impairment	947	1,007	958
Ending balance collectively evaluated for impairment	42,966	33,224	37,126
Commercial | Other
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	3,329	3,541	3,541
Charge offs	0	1	179
Recoveries	20	1	73
Provision (credit)	(922)	(111)	(106)
Ending balance	2,427	3,430	3,329
Ending balance specifically evaluated for impairment	172	1,485	1,273
Ending balance collectively evaluated for impairment	2,255	1,945	2,056
Total	237,896	205,462	218,773
Ending balance specifically evaluated for impairment	990	7,653	7,075
Ending balance collectively evaluated for impairment	236,906	197,809	211,698
Municipal
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	27	24	24
Charge offs	0	0	0
Recoveries	0	0	0
Provision (credit)	2	1	3
Ending balance	29	25	27
Ending balance specifically evaluated for impairment	0	0	0
Ending balance collectively evaluated for impairment	29	25	27
Total	43,537	54,246	41,288
Ending balance specifically evaluated for impairment	0	0	0
Ending balance collectively evaluated for impairment	43,537	54,246	41,288
Residential | Construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	25	34	34
Charge offs	0	0	0
Recoveries	0	0	0
Provision (credit)	7	(4)	(9)
Ending balance	32	30	25
Ending balance specifically evaluated for impairment	0	0	0
Ending balance collectively evaluated for impairment	32	30	25
Total	15,202	18,450	14,813
Ending balance specifically evaluated for impairment	0	0	0
Ending balance collectively evaluated for impairment	15,202	18,450	14,813
Residential | Term
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,024	1,235	1,235
Charge offs	2	49	445
Recoveries	10	3	57
Provision (credit)	194	(75)	177
Ending balance	1,226	1,114	1,024
Ending balance specifically evaluated for impairment	233	348	237
Ending balance collectively evaluated for impairment	993	766	787
Total	500,971	474,241	492,455
Ending balance specifically evaluated for impairment	12,038	10,919	12,439
Ending balance collectively evaluated for impairment	488,933	463,322	480,016
Home equity line of credit
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,078	730	730
Charge offs	153	38	69
Recoveries	1	1	4
Provision (credit)	86	(63)	413
Ending balance	1,012	630	1,078
Ending balance specifically evaluated for impairment	296	7	447
Ending balance collectively evaluated for impairment	716	623	631
Total	90,674	95,692	92,349
Ending balance specifically evaluated for impairment	2,228	1,030	2,488
Ending balance collectively evaluated for impairment	88,446	94,662	89,861
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	867	630	630
Charge offs	100	63	338
Recoveries	43	21	128
Provision (credit)	(85)	72	447
Ending balance	725	660	867
Ending balance specifically evaluated for impairment	58	2	5
Ending balance collectively evaluated for impairment	667	658	862
Total	29,262	24,557	26,503
Ending balance specifically evaluated for impairment	67	2	5
Ending balance collectively evaluated for impairment	29,195	24,555	26,498
Unallocated
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,182	1,216	1,216
Charge offs	0	0	0
Recoveries	0	0	0
Provision (credit)	939	428	(34)
Ending balance	2,121	1,644	1,182
Ending balance specifically evaluated for impairment	0	0	0
Ending balance collectively evaluated for impairment	2,121	1,644	1,182
Total	0	0	0
Ending balance specifically evaluated for impairment	0	0	0
Ending balance collectively evaluated for impairment	$ 0	$ 0	$ 0

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share based compensation cost	$ 1,785	$ 1,785
Compensation expense recognized		150	$ 123
Share-based compensation expense not yet recognized	$ 1,087	$ 1,087	$ 1,046
Plan 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Capital shares reserved for future issuance (in shares)				400,000
Plan 2010 | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants during the period (in shares)	184,487
Number of shares that remain restricted (in shares)	71,374	71,374

Stock-Based Compensation - Shar

Stock-Based Compensation - Shares of Restricted Stock Granted under 2010 Plan (Details) - Plan 2010 - Restricted Stock - shares	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares	71,374
Remaining Term	2 years
2015 | Five Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term						5 years
Shares	527
Remaining Term						9 days
2016 | Five Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term					5 years
Shares	10,874
Remaining Term					24 days
2017 | Five Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term				5 years
Shares	7,017
Remaining Term				1 year 9 months 18 days
2018 | Five Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term			5 years
Shares	6,184
Remaining Term			2 years 9 months 18 days
2018 | Three Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term			3 years
Shares	5,371
Remaining Term			27 days
2018 | Four Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term			4 years
Shares	2,068
Remaining Term			1 year 9 months 18 days
2019 | Three Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term		3 years
Shares	16,254
Remaining Term		1 year 9 months 18 days
2019 | Two Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term		2 years
Shares	1,484
Remaining Term		24 days
2020 | Three Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term	3 years
Shares	18,592
Remaining Term	2 years 9 months 18 days
2020 | Two Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term	2 years
Shares	694
Remaining Term	1 year 9 months 18 days
2020 | One Year
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term	1 year
Shares	2,309
Remaining Term	24 days

Common Stock (Details)

Common Stock (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Class of Stock [Line Items]
Proceeds from sale of common stock	$ 163	$ 168
Capital Purchase Program
Class of Stock [Line Items]
Proceeds from sale of common stock	$ 163	$ 168

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income (Numerator) [Abstract]
Net income as reported	$ 6,495	$ 6,156
Basic EPS: Income available to common shareholders	6,495	6,156
Diluted EPS: Income available to common shareholders plus assumed conversions	$ 6,495	$ 6,156
Shares (Denominator) [Abstract]
Basic EPS: Income available to common shareholders (in shares)	10,844,600	10,802,782
Effect of dilutive securities: restricted stock (in shares)	69,753	73,953
Diluted EPS: Income available to common shareholders plus assumed conversions (in shares)	10,914,353	10,876,735
Per-Share Amount [Abstract]
Basic EPS: Income available to common shareholders (in dollars per share)	$ 0.60	$ 0.57
Diluted EPS: Income available to common shareholders plus assumed conversions (in dollars per share)	$ 0.60	$ 0.57

Employee Benefit Plans - Narrat

Employee Benefit Plans - Narrative (Details)	3 Months Ended
	Mar. 31, 2020USD ($)employeepost_retirement_benefit_plan	Mar. 31, 2019USD ($)	Dec. 31, 2019USD ($)
Retirement Benefits, Description [Abstract]
Requisite period of service	3 months
Defined contribution plan employer maximum percentage match of annual salary based on employee contribution	3.00%
Defined contribution plan employer maximum percentage of annual profit-sharing contribution to plan for benefit of employee			2.00%
Expense related to 401(k) plan	$ 255,000	$ 185,000
Unfunded, supplemental retirement benefits payable period	20 years
Pension expense	$ 40,000	40,000
Accrued pension liability	$ 2,772,000	$ 2,894,000	$ 2,828,000
Number of post retirement benefit plans (post retirement benefit plan) | post_retirement_benefit_plan	2
Number of employees currently eligible (employee) | employee	6
Requisite age (in years)	50 years
Post-retirement benefit plan health insurance subsidy range minimum per month per person	$ 40
Post-retirement benefit plan health insurance subsidy range maximum per month per person	$ 1,200
Discount rate	3.00%
Assumed health care cost trend rate	7.00%
Expected future benefit payments, current year	$ 108,000
Estimated plan expense	64,000
Effect of one percentage point increase on accumulated benefit obligation	100,000
Effect of one percentage point increase on interest cost	7,000
Effect of one percentage point increase on service cost	$ 1,000

Employee Benefit Plans - Accumu

Employee Benefit Plans - Accumulated Post-Retirement Benefit Obligation, Funded Status, and Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Change in benefit obligation
Benefit obligation at beginning of year	$ 1,581	$ 1,599
Interest cost	16	17
Benefits paid	(27)	(28)
Benefit obligation at end of period	1,570	1,588
Funded status
Benefit obligation at end of period	(1,570)	(1,588)	$ (1,570)	$ (1,588)
Unamortized gain			(31)	(47)
Accrued benefit cost at end of period			$ (1,601)	$ (1,635)
Components of net periodic benefit cost
Interest cost	16	17
Net periodic benefit cost	$ 16	$ 17

Employee Benefit Plans - Schedu

Employee Benefit Plans - Schedule of Net Periodic Benefit Cost Not Yet Recognized (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Retirement Benefits, Description [Abstract]
Unamortized net actuarial gain	$ 31	$ 31	$ 47
Deferred tax expense	(7)	(7)	(10)
Net unrecognized postretirement benefits included in accumulated other comprehensive income	$ 24	$ 24	$ 37

Other Comprehensive Income (L_3

Other Comprehensive Income (Loss) - Summary of Available for Sale Securities Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 212,508	$ 191,542
Other comprehensive income (loss)	(629)	3,050
Ending balance	215,257	197,787
Accumulated Net Investment Gain (Loss) Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	3,657	(5,051)
Unrealized gains arising during the period	6,109	4,446
Reclassification of net realized gains during the period	(752)	0
Related deferred taxes	(1,124)	(934)
Other comprehensive income (loss)	4,233	3,512
Ending balance	$ 7,890	$ (1,539)

Other Comprehensive Income (L_4

Other Comprehensive Income (Loss) - Reclassification of Available-for-Sale Securities to Held-to-Maturity Securities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Reclassification of Available-for-Sale Securities to Held-to-maturity Roll Forward [Roll Forward]
Beginning balance	$ 212,508	$ 191,542
Other comprehensive income (loss)	(629)	3,050
Ending balance	215,257	197,787
Accumulated Net Gain (Loss) on Securities Transferred from Available-for-Sale to Held-to-Maturity
Reclassification of Available-for-Sale Securities to Held-to-maturity Roll Forward [Roll Forward]
Beginning balance	(182)	(197)
Amortization of net unrealized gains	10	4
Related deferred taxes	(2)	(1)
Other comprehensive income (loss)	8	3
Ending balance	$ (174)	$ (194)

Other Comprehensive Income (L_5

Other Comprehensive Income (Loss) - Derivative Instruments Included in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 212,508	$ 191,542
Other comprehensive income (loss)	(629)	3,050
Ending balance	215,257	197,787
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	97	1,438
Unrealized losses on cash flow hedging derivatives arising during the period	(6,165)	(589)
Related deferred taxes	1,295	124
Other comprehensive income (loss)	(4,870)	(465)
Ending balance	$ (4,773)	$ 973

Other Comprehensive Income (L_6

Other Comprehensive Income (Loss) - Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	$ 212,508	$ 191,542
Ending balance	215,257	197,787
Accumulated Defined Benefit Plans Adjustment Attributable to Parent
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	24	37
Amortization of unrecognized transition obligation	0	0
Change in unamortized net actuarial gain (loss)	0	0
Related deferred taxes	0	0
Ending balance	$ 24	$ 37

Financial Derivative Instrume_3

Financial Derivative Instruments (Details)	3 Months Ended
	Mar. 31, 2020USD ($)derivative	Dec. 31, 2019USD ($)derivative	Mar. 31, 2019USD ($)derivative
Interest Rate Swap
Derivative [Line Items]
Expense incurred from restructuring derivatives	$ 1,760,000
Not Designated as Hedging Instrument | Customer loan interest swap agreements
Derivative [Line Items]
Fair Value	$ 0	$ 0	$ 0
Number of derivative instruments | derivative	4	4	0
Derivative notional amount	$ 32,588,000	$ 32,748,000	$ 0
Other Liabilities | Not Designated as Hedging Instrument | Customer loan interest swap agreements
Derivative [Line Items]
Fair Value	$ (3,280,000)	$ (1,205,000)	$ 0
Number of derivative instruments | derivative	2	2	0
Derivative notional amount	$ 16,394,000	$ 16,374,000	$ 0
Other Assets | Not Designated as Hedging Instrument | Customer loan interest swap agreements
Derivative [Line Items]
Fair Value	$ 3,280,000	$ 1,205,000	$ 0
Number of derivative instruments | derivative	2	2	0
Derivative notional amount	$ 16,394,000	$ 16,374,000	$ 0
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap December 5 2019
Derivative [Line Items]
Fixed Rate Paid	2.466%
Notional Amount	$ 0	0	25,000,000
Fair Value	$ 0	0	(7,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap June 27 2021
Derivative [Line Items]
Fixed Rate Paid	0.893%
Notional Amount	$ 20,000,000	20,000,000	20,000,000
Fair Value	$ (151,000)	199,000	586,000
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap June 28 2021
Derivative [Line Items]
Fixed Rate Paid	0.94%
Notional Amount	$ 30,000,000	30,000,000	30,000,000
Fair Value	$ (244,000)	278,000	847,000
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap June 5 2020
Derivative [Line Items]
Fixed Rate Paid	2.547%
Notional Amount	$ 0	25,000,000	25,000,000
Fair Value	$ 0	(96,000)	(57,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap December 5 2020
Derivative [Line Items]
Fixed Rate Paid	2.603%
Notional Amount	$ 0	25,000,000	25,000,000
Fair Value	$ 0	(234,000)	(137,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap December 5 2022
Derivative [Line Items]
Fixed Rate Paid	1.779%
Notional Amount	$ 0	25,000,000	0
Fair Value	$ 0	(98,000)	0
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap August 2 2024
Derivative [Line Items]
Fixed Rate Paid	1.59%
Notional Amount	$ 12,500,000	12,500,000	0
Fair Value	$ (663,000)	(11,000)	0
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap August 5 2024
Derivative [Line Items]
Fixed Rate Paid	1.42%
Notional Amount	$ 12,500,000	12,500,000	0
Fair Value	$ (571,000)	85,000	0
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap February 12 2023
Derivative [Line Items]
Fixed Rate Paid	1.486%
Notional Amount	$ 25,000,000	0	0
Fair Value	$ (748,000)	0	0
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap February 12 2024
Derivative [Line Items]
Fixed Rate Paid	1.477%
Notional Amount	$ 25,000,000	0	0
Fair Value	$ (972,000)	0	0
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap June 28 2026
Derivative [Line Items]
Fixed Rate Paid	1.158%
Notional Amount	$ 50,000,000	0	0
Fair Value	$ (1,569,000)	0	0
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap March 13 2025
Derivative [Line Items]
Fixed Rate Paid	0.855%
Notional Amount	$ 25,000,000	0	0
Fair Value	$ (463,000)	0	0
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap March 13 2030
Derivative [Line Items]
Fixed Rate Paid	1.029%
Notional Amount	$ 20,000,000	0	0
Fair Value	(661,000)	0	0
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap
Derivative [Line Items]
Notional Amount	220,000,000	150,000,000	125,000,000
Fair Value	(6,042,000)	$ 123,000	$ 1,232,000
Cash Flow Hedging | Designated as Hedging Instrument | Customer Loan Swaps
Derivative [Line Items]
Required amount to be pledged	9,322,000
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap Maturity Date Prior to December 31, 2021
Derivative [Line Items]
Notional Amount	$ 50,000,000
Number of derivative instruments | derivative	2
Cash Flow Hedging | Designated as Hedging Instrument | Contract With Maturity Dates Beyond December 31, 2021
Derivative [Line Items]
Notional Amount	$ 170,000,000
Number of derivative instruments | derivative	7
Cash Flow Hedging | Designated as Hedging Instrument | Customer Loan Swaps Maturity Dates December 19, 2029 and October 1, 2039
Derivative [Line Items]
Number of derivative instruments | derivative	2
Cash Flow Hedging | Not Designated as Hedging Instrument | Customer loan interest swap agreements
Derivative [Line Items]
Collateral posted, cash	$ 3,100,000
Collateral posted, securities	$ 10,000,000

Mortgage Servicing Rights - Nar

Mortgage Servicing Rights - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Transfers and Servicing [Abstract]
Moving average of weekly prepayment assumption	3 years
Prepayment speed (as a percentage)	12.54%
Discount rate adjustment rate (as a percentage)	9.00%
Servicing rights capitalized	$ 129	$ 58
Servicing rights amortized	66	56
Mortgage servicing rights	2,126	2,410	$ 2,089
Residential mortgage loans serviced for others, principal	$ 268,077	$ 260,553	$ 266,173

Mortgage Servicing Rights - Sch

Mortgage Servicing Rights - Schedule of Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Transfers and Servicing [Abstract]
Mortgage servicing rights	$ 6,269	$ 6,140	$ 5,776
Accumulated amortization	(4,660)	(4,594)	(4,420)
Total servicing asset at fair value	$ 1,609	$ 1,546	$ 1,356

Certificates of Deposit (Detail

Certificates of Deposit (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Banking and Thrift [Abstract]
Certificates of deposit of less than $100,000	$ 274,621	$ 277,225	$ 398,689
Certificates $100,000 to $250,000	364,530	345,241	238,429
Certificates $250,000 and over	71,787	67,513	75,358
Total certificates of deposit	$ 710,938	$ 689,979	$ 712,476

Fair Value - Assets and Liabili

Fair Value - Assets and Liabilities Recorded at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 312,928	$ 360,520	$ 325,276
U.S. Government-sponsored agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	7,552	7,398	5,016
Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	285,152	326,617	315,423
State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	20,224	26,505	4,837
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Derivative assets	0
Total assets	0	0	0
Derivative liabilities	0	0	0
Fair Value, Measurements, Recurring | Level 1 | Interest rate swap agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		0	0
Derivative liabilities	0	0	0
Fair Value, Measurements, Recurring | Level 1 | Customer loan interest swap agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Fair Value, Measurements, Recurring | Level 1 | U.S. Government-sponsored agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Fair Value, Measurements, Recurring | Level 1 | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Fair Value, Measurements, Recurring | Level 1 | State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	312,928	360,520	325,276
Derivative assets	3,280	1,767
Total assets	316,208	362,287	326,709
Derivative liabilities	9,322	1,644	201
Fair Value, Measurements, Recurring | Level 2 | Interest rate swap agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		562	1,433
Derivative liabilities	9,322	439	201
Fair Value, Measurements, Recurring | Level 2 | Customer loan interest swap agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	3,280	1,205
Derivative liabilities		1,205
Fair Value, Measurements, Recurring | Level 2 | U.S. Government-sponsored agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	7,552	7,398	5,016
Fair Value, Measurements, Recurring | Level 2 | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	285,152	326,617	315,423
Fair Value, Measurements, Recurring | Level 2 | State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	20,224	26,505	4,837
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Derivative assets	0
Total assets	0	0	0
Derivative liabilities	0	0	0
Fair Value, Measurements, Recurring | Level 3 | Interest rate swap agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		0	0
Derivative liabilities	0	0	0
Fair Value, Measurements, Recurring | Level 3 | Customer loan interest swap agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0
Fair Value, Measurements, Recurring | Level 3 | U.S. Government-sponsored agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Fair Value, Measurements, Recurring | Level 3 | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Fair Value, Measurements, Recurring | Level 3 | State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Fair Value, Measurements, Recurring | Total Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	312,928	360,520	325,276
Derivative assets	3,280	1,767
Total assets	316,208	362,287	326,709
Derivative liabilities	9,322	1,644	201
Fair Value, Measurements, Recurring | Total Fair Value | Interest rate swap agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		562	1,433
Derivative liabilities	9,322	439	201
Fair Value, Measurements, Recurring | Total Fair Value | Customer loan interest swap agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	3,280	1,205
Derivative liabilities		1,205
Fair Value, Measurements, Recurring | Total Fair Value | U.S. Government-sponsored agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	7,552	7,398	5,016
Fair Value, Measurements, Recurring | Total Fair Value | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	285,152	326,617	315,423
Fair Value, Measurements, Recurring | Total Fair Value | State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 20,224	$ 26,505	$ 4,837

Fair Value - Additional Informa

Fair Value - Additional Information (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Valuation allowance on real estate owned	$ 0	$ 0	$ 0
Valuation allowance on impaired financing receivable	$ 706,000	$ 1,916,000	$ 1,822,000

Fair Value - Assets Recorded at

Fair Value - Assets Recorded at Fair Value on a Non-Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 316	$ 279	$ 584
Fair Value, Measurements, Nonrecurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	0	0	0
Impaired loans	0	0	0
Total assets	0	0	0
Fair Value, Measurements, Nonrecurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	316	279	584
Impaired loans	1,051	6,579	6,519
Total assets	1,367	6,858	7,103
Fair Value, Measurements, Nonrecurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	0	0	0
Impaired loans	0	0	0
Total assets	0	0	0
Fair Value, Measurements, Nonrecurring | Total Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	316	279	584
Impaired loans	1,051	6,579	6,519
Total assets	$ 1,367	$ 6,858	$ 7,103

Fair Value - Assets and Liabi_2

Fair Value - Assets and Liabilities at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities to be held to maturity, carrying value	$ 341,592	$ 281,606	$ 281,219
Securities to be held to maturity	349,248	287,045	282,568
Mortgage servicing rights	2,126	2,089	2,410
Total deposits	1,644,612	1,650,466	1,606,875
Carrying value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities to be held to maturity, carrying value	341,592	281,606	281,219
Loans	1,332,350	1,285,436	1,253,149
Mortgage servicing rights, carrying value	1,609	1,546	1,356
Local certificates of deposit	290,440	285,602	293,980
National certificates of deposit	420,498	404,377	418,496
Total deposits	710,938	689,979	712,476
Repurchase agreements	37,937	37,450	30,309
Federal Home Loan Bank advances	210,103	147,505	140,110
Total borrowed funds	248,040	184,955	170,419
Carrying value | Commercial | Real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	378,049	368,645	353,521
Carrying value | Commercial | Construction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	43,397	37,678	33,852
Carrying value | Commercial | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	234,940	215,068	201,459
Carrying value | Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	43,502	41,258	54,217
Carrying value | Residential | Construction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	15,163	14,785	18,415
Carrying value | Residential | Term
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	499,478	491,315	472,941
Carrying value | Home equity line of credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	89,442	91,149	94,957
Carrying value | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	28,379	25,538	23,787
Total Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities to be held to maturity	349,248	287,045	282,568
Loans	1,324,671	1,275,685	1,229,685
Mortgage servicing rights	2,126	2,089	2,410
Local certificates of deposit	290,886	281,480	293,325
National certificates of deposit	429,110	412,337	419,285
Total deposits	719,996	693,817	712,610
Repurchase agreements	37,494	37,450	30,276
Federal Home Loan Bank advances	211,228	140,063	139,565
Total borrowed funds	248,722	177,513	169,841
Total Fair Value | Commercial | Real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	371,916	364,626	347,398
Total Fair Value | Commercial | Construction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	42,693	37,366	33,266
Total Fair Value | Commercial | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	233,411	212,548	199,700
Total Fair Value | Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	41,909	40,552	53,179
Total Fair Value | Residential | Construction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	15,304	14,786	18,034
Total Fair Value | Residential | Term
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	503,098	491,359	463,150
Total Fair Value | Home equity line of credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	89,407	90,959	92,834
Total Fair Value | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	26,933	23,489	22,124
Total Fair Value | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities to be held to maturity	0	0	0
Loans	0	0	0
Mortgage servicing rights	0	0	0
Local certificates of deposit	0	0	0
National certificates of deposit	0	0	0
Total deposits	0	0	0
Repurchase agreements	0	0	0
Federal Home Loan Bank advances	0	0	0
Total borrowed funds	0	0	0
Total Fair Value | Level 1 | Commercial | Real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0	0
Total Fair Value | Level 1 | Commercial | Construction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0	0
Total Fair Value | Level 1 | Commercial | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0	0
Total Fair Value | Level 1 | Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0	0
Total Fair Value | Level 1 | Residential | Construction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0	0
Total Fair Value | Level 1 | Residential | Term
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0	0
Total Fair Value | Level 1 | Home equity line of credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0	0
Total Fair Value | Level 1 | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0	0
Total Fair Value | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities to be held to maturity	349,248	287,045	282,568
Loans	1,051	6,579	6,519
Mortgage servicing rights	2,126	2,089	2,410
Local certificates of deposit	290,886	281,480	293,325
National certificates of deposit	429,110	412,337	419,285
Total deposits	719,996	693,817	712,610
Repurchase agreements	37,494	37,450	30,276
Federal Home Loan Bank advances	211,228	140,063	139,565
Total borrowed funds	248,722	177,513	169,841
Total Fair Value | Level 2 | Commercial | Real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	7	2	422
Total Fair Value | Level 2 | Commercial | Construction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0	0
Total Fair Value | Level 2 | Commercial | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	5,046	5,458
Total Fair Value | Level 2 | Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0	0
Total Fair Value | Level 2 | Residential | Construction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0	0
Total Fair Value | Level 2 | Residential | Term
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	335	577	625
Total Fair Value | Level 2 | Home equity line of credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	700	954	14
Total Fair Value | Level 2 | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	9	0	0
Total Fair Value | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities to be held to maturity	0	0	0
Loans	1,323,620	1,269,106	1,223,166
Mortgage servicing rights	0	0	0
Local certificates of deposit	0	0	0
National certificates of deposit	0	0	0
Total deposits	0	0	0
Repurchase agreements	0	0	0
Federal Home Loan Bank advances	0	0	0
Total borrowed funds	0	0	0
Total Fair Value | Level 3 | Commercial | Real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	371,909	364,624	346,976
Total Fair Value | Level 3 | Commercial | Construction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	42,693	37,366	33,266
Total Fair Value | Level 3 | Commercial | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	233,411	207,502	194,242
Total Fair Value | Level 3 | Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	41,909	40,552	53,179
Total Fair Value | Level 3 | Residential | Construction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	15,304	14,786	18,034
Total Fair Value | Level 3 | Residential | Term
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	502,763	490,782	462,525
Total Fair Value | Level 3 | Home equity line of credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	88,707	90,005	92,820
Total Fair Value | Level 3 | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	$ 26,924	$ 23,489	$ 22,124