The First Bancorp, Inc. (FNLC) 10-Q 9 May 17 2017 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	May 01, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	First Bancorp, Inc /ME/
Entity Central Index Key	765,207
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		10,817,220
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2017

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Assets
Cash and cash equivalents	$ 17,600	$ 17,366	$ 14,533
Interest bearing deposits in other banks	3,272	293	6,372
Securities available for sale	312,624	300,416	216,725
Securities to be held to maturity (fair value of $239,378,000 at March 31, 2017, $225,537,000 at December 31, 2016 and $243,337,000 at March 31, 2016)	240,829	226,828	236,611
Restricted equity securities, at cost	13,363	11,930	13,875
Loans held for sale	979	782	224
Loans	1,089,735	1,071,526	1,004,942
Less allowance for loan losses	10,367	10,138	10,219
Net loans	1,079,368	1,061,388	994,723
Accrued interest receivable	6,854	5,532	6,271
Premises and equipment, net	21,760	22,202	21,392
Other real estate owned	525	375	1,592
Goodwill	29,805	29,805	29,805
Other assets	36,849	35,958	32,558
Total assets	1,763,828	1,712,875	1,574,681
Liabilities
Demand deposits	181,188	140,482	116,756
NOW deposits	273,050	282,971	240,112
Money market deposits	142,220	125,544	74,643
Savings deposits	222,976	217,340	205,218
Certificates of deposit	527,049	476,620	472,712
Total deposits	1,346,483	1,242,957	1,109,441
Borrowed funds – short term	106,342	158,774	151,399
Borrowed funds – long term	120,125	120,127	125,132
Other liabilities	16,025	18,496	17,164
Total liabilities	1,588,975	1,540,354	1,403,136
Shareholders' equity
Common stock, one cent par value per share	108	108	108
Additional paid-in capital	60,991	60,723	60,064
Retained earnings	113,697	111,693	108,677
Accumulated other comprehensive income (loss)
Net unrealized gain (loss) on securities available for sale	(934)	(935)	2,975
Net unrealized loss on securities transferred from available for sale to held to maturity	(133)	(129)	(123)
Net unrealized gain on cash flow hedging derivative instruments	1,226	1,163	0
Net unrealized loss on postretirement benefit costs	(102)	(102)	(156)
Total shareholders' equity	174,853	172,521	171,545
Total liabilities & shareholders' equity	$ 1,763,828	$ 1,712,875	$ 1,574,681
Common Stock
Number of shares authorized (shares)	18,000,000	18,000,000	18,000,000
Number of shares outstanding (shares)	10,814,132	10,793,946	10,775,307
Book value per common share (usd per share)	$ 16.17	$ 15.98	$ 15.92
Tangible book value per common share (usd per share)	$ 13.39	$ 13.20	$ 13.13

Consolidated Balance Sheets (U3

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Assets
Securities to be held to maturity	$ 239,378	$ 225,537	$ 243,337
Shareholders' equity
Number of shares issued (shares)	10,814,132	10,793,946	10,775,307
Common stock, par value per share (usd per share)	$ 0.01	$ 0.01	$ 0.01

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Interest income
Interest and fees on loans (includes tax-exempt income of $186,000 in 2017 and $148,000 in 2016)	$ 10,652	$ 9,734
Interest on deposits with other banks	15	3
Interest and dividends on investments (includes tax-exempt income of $1,569,000 in 2017 and $1,237,000 in 2016)	3,824	3,539
Total interest income	14,491	13,276
Interest expense
Interest on deposits	1,994	1,353
Interest on borrowed funds	1,021	1,194
Total interest expense	3,015	2,547
Net interest income	11,476	10,729
Provision for loan losses	500	375
Net interest income after provision for loan losses	10,976	10,354
Non-interest income
Investment management and fiduciary income	631	563
Service charges on deposit accounts	502	574
Net securities gains	3	536
Mortgage origination and servicing income, net of amortization	332	129
Other operating income	1,375	1,162
Total non-interest income	2,843	2,964
Non-interest expense
Salaries and employee benefits	3,970	3,598
Occupancy expense	624	578
Furniture and equipment expense	870	796
FDIC insurance premiums	240	214
Amortization of identified intangibles	11	11
Other operating expense	1,983	2,003
Total non-interest expense	7,698	7,200
Income before income taxes	6,121	6,118
Income tax expense	1,484	1,615
NET INCOME	$ 4,637	$ 4,503
Basic earnings per common share (usd per share)	$ 0.43	$ 0.42
Diluted earnings per common share (usd per share)	$ 0.43	$ 0.42
Other comprehensive income (loss) net of tax
Net unrealized gain on securities available for sale	$ 1	$ 1,852
Net unrealized loss on securities transferred from available for sale to held to maturity, net of amortization	(4)	(11)
Net unrealized gain on cash flow hedging derivative instruments	63	0
Other comprehensive income	60	1,841
Comprehensive income	$ 4,697	$ 6,344

Consolidated Statements of Inc5

Consolidated Statements of Income and Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Interest and fees on loans (tax-exempt income)	$ 186	$ 148
Interest and dividends on investments (tax-exempt income)	$ 1,569	$ 1,237

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)
Balance, beginning balance at Dec. 31, 2015	$ 167,498	$ 59,970	$ 106,673	$ 855
Balance, beginning period (in shares) at Dec. 31, 2015		10,753,855
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	4,503		4,503
Net unrealized gain on securities available for sale, net of tax	1,852			1,852
Net unrealized loss on securities transferred from available for sale to held to maturity, net of tax	(11)			(11)
Comprehensive income	6,344		4,503	1,841
Cash dividends declared	(2,370)		(2,370)
Equity compensation expense	49	$ 49
Payment to repurchase common stock	(129)		(129)
Payment to repurchase of common stock (in shares)		(6,936)
Tax benefit from vesting of restricted stock	32	$ 32
Issuance of restricted stock (in shares)		21,847
Proceeds from sale of common stock	121	$ 121
Proceeds from sale of common stock (in shares)		6,541
Balance, ending period at Mar. 31, 2016	$ 171,545	$ 60,172	108,677	2,696
Balance, ending balance (in shares) at Mar. 31, 2016	10,775,307	10,775,307
Balance, beginning balance at Dec. 31, 2016	$ 172,521	$ 60,831	111,693	(3)
Balance, beginning period (in shares) at Dec. 31, 2016	10,793,946	10,793,946
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 4,637		4,637
Net unrealized gain on securities available for sale, net of tax	1			1
Net unrealized gain on cash flow hedging derivative instruments	63			63
Net unrealized loss on securities transferred from available for sale to held to maturity, net of tax	(4)			(4)
Comprehensive income	4,697		4,637	60
Cash dividends declared	(2,487)		(2,487)
Equity compensation expense	83	$ 83
Payment to repurchase common stock	(146)		(146)
Payment to repurchase of common stock (in shares)		(5,258)
Issuance of restricted stock (in shares)		18,850
Proceeds from sale of common stock	185	$ 185
Proceeds from sale of common stock (in shares)		6,594
Balance, ending period at Mar. 31, 2017	$ 174,853	$ 61,099	$ 113,697	$ 57
Balance, ending balance (in shares) at Mar. 31, 2017	10,814,132	10,814,132

Consolidated Statements of Cha7

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Stockholders' Equity [Abstract]
Cash dividends declared (usd per share)	$ 0.23	$ 0.22

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities
Net income	$ 4,637	$ 4,503
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation	457	432
Change in deferred taxes	80	(111)
Provision for loan losses	500	375
Loans originated for resale	(10,069)	(4,560)
Proceeds from sales and transfers of loans	10,024	4,799
Net gain on sales of loans	(152)	(114)
Net gain on sale or call of securities	(3)	(536)
Net amortization of premiums on investments	904	619
Net gain on sale of other real estate owned	(1)	(7)
Equity compensation expense	83	49
Tax benefit from vesting of restricted stock	0	32
Net increase in other assets and accrued interest	(2,192)	(1,944)
Net decrease in other liabilities	(1,269)	(388)
Net loss on disposal of premises and equipment	7	0
Amortization of investment in limited partnership	45	49
Net acquisition amortization	11	11
Net cash provided by operating activities	3,062	3,209
Cash flows from investing activities
Increase in interest-bearing deposits in other banks	(2,979)	(2,359)
Proceeds from sales of securities available for sale	3	8,868
Proceeds from maturities, payments and calls of securities available for sale	103,781	8,852
Proceeds from maturities, payments and calls of securities to be held to maturity	2,756	6,228
Proceeds from sales of other real estate owned	44	201
Purchases of securities available for sale	(117,017)	(8,672)
Purchases of securities to be held to maturity	(16,637)	(2,785)
Redemption of restricted equity securities	0	382
Purchase of restricted equity securities	(1,433)	0
Net increase in loans	(18,673)	(16,630)
Capital expenditures	(22)	(8)
Net cash used by investing activities	(50,177)	(5,923)
Cash flows from financing activities
Net increase (decrease) in demand, savings, and money market accounts	53,097	(35,478)
Net increase in certificates of deposit	50,429	101,730
Net decrease in short-term borrowings	(52,434)	(70,926)
Advances on long-term borrowings	0	10,000
Payment to repurchase common stock	(146)	(129)
Proceeds from sale of common stock	185	121
Dividends paid	(3,782)	(2,370)
Net cash provided by financing activities	47,349	2,948
Net increase in cash and cash equivalents	234	234
Cash and cash equivalents at beginning of period	17,366	14,299
Cash and cash equivalents at end of period	17,600	14,533
Interest paid	2,975	2,487
Non-cash transactions
Net transfer from loans to other real estate owned	$ 193	$ 254

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2017
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 normal 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 2017 period is not necessarily indicative of the results that may be expected for the year ending December 31, 2017 . 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, 2016 . Subsequent Events Events occurring subsequent to March 31, 2017 , have been evaluated as to their potential impact to the financial statements.

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2017
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, 2017 : Amortized Cost Unrealized Gains Unrealized Losses Fair Value (Estimated) Securities available for sale Mortgage-backed securities $ 295,424,000 $ 1,407,000 $ (3,204,000 ) $ 293,627,000 State and political subdivisions 15,407,000 474,000 (176,000 ) 15,705,000 Other equity securities 3,229,000 67,000 (4,000 ) 3,292,000 $ 314,060,000 $ 1,948,000 $ (3,384,000 ) $ 312,624,000 Securities to be held to maturity U.S. Government-sponsored agencies $ 12,050,000 $ — $ (317,000 ) $ 11,733,000 Mortgage-backed securities 29,093,000 880,000 (135,000 ) 29,838,000 State and political subdivisions 195,386,000 2,079,000 (3,958,000 ) 193,507,000 Corporate securities 4,300,000 — — 4,300,000 $ 240,829,000 $ 2,959,000 $ (4,410,000 ) $ 239,378,000 Restricted equity securities Federal Home Loan Bank Stock $ 12,326,000 $ — $ — $ 12,326,000 Federal Reserve Bank Stock 1,037,000 — — 1,037,000 $ 13,363,000 $ — $ — $ 13,363,000 The following table summarizes the amortized cost and estimated fair value of investment securities at December 31, 2016 : Amortized Cost Unrealized Gains Unrealized Losses Fair Value (Estimated) Securities available for sale Mortgage-backed securities $ 282,397,000 $ 1,334,000 $ (3,127,000 ) $ 280,604,000 State and political subdivisions 16,183,000 475,000 (176,000 ) 16,482,000 Other equity securities 3,274,000 63,000 (7,000 ) 3,330,000 $ 301,854,000 $ 1,872,000 $ (3,310,000 ) $ 300,416,000 Securities to be held to maturity U.S. Government-sponsored agencies $ 11,943,000 $ 35,000 $ (233,000 ) $ 11,745,000 Mortgage-backed securities 31,201,000 967,000 (147,000 ) 32,021,000 State and political subdivisions 179,384,000 1,971,000 (3,884,000 ) 177,471,000 Corporate securities 4,300,000 — — 4,300,000 $ 226,828,000 $ 2,973,000 $ (4,264,000 ) $ 225,537,000 Restricted equity securities Federal Home Loan Bank Stock $ 10,893,000 $ — $ — $ 10,893,000 Federal Reserve Bank Stock 1,037,000 — — 1,037,000 $ 11,930,000 $ — $ — $ 11,930,000 The following table summarizes the amortized cost and estimated fair value of investment securities at March 31, 2016 : Amortized Cost Unrealized Gains Unrealized Losses Fair Value (Estimated) Securities available for sale Mortgage-backed securities $ 190,025,000 $ 3,837,000 $ (205,000 ) $ 193,657,000 State and political subdivisions 18,975,000 948,000 (19,000 ) 19,904,000 Other equity securities 3,148,000 39,000 (23,000 ) 3,164,000 $ 212,148,000 $ 4,824,000 $ (247,000 ) $ 216,725,000 Securities to be held to maturity U.S. Government-sponsored agencies $ 68,009,000 $ 37,000 $ (107,000 ) $ 67,939,000 Mortgage-backed securities 39,828,000 1,675,000 (35,000 ) 41,468,000 State and political subdivisions 124,474,000 5,156,000 — 129,630,000 Corporate securities 4,300,000 — — 4,300,000 $ 236,611,000 $ 6,868,000 $ (142,000 ) $ 243,337,000 Restricted equity securities Federal Home Loan Bank Stock $ 12,838,000 $ — $ — $ 12,838,000 Federal Reserve Bank Stock 1,037,000 — — 1,037,000 $ 13,875,000 $ — $ — $ 13,875,000 The following table summarizes the contractual maturities of investment securities at March 31, 2017 : 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 $ 43,000 $ 43,000 $ 903,000 $ 908,000 Due in 1 to 5 years 1,909,000 1,953,000 12,213,000 12,477,000 Due in 5 to 10 years 31,835,000 32,471,000 42,819,000 43,562,000 Due after 10 years 277,044,000 274,865,000 184,894,000 182,431,000 Equity securities 3,229,000 3,292,000 — — $ 314,060,000 $ 312,624,000 $ 240,829,000 $ 239,378,000 The following table summarizes the contractual maturities of investment securities at December 31, 2016 : 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 $ 253,000 $ 253,000 $ 906,000 $ 913,000 Due in 1 to 5 years 2,251,000 2,298,000 13,451,000 13,714,000 Due in 5 to 10 years 21,043,000 21,505,000 41,588,000 42,448,000 Due after 10 years 275,033,000 273,030,000 170,883,000 168,462,000 Equity securities 3,274,000 3,330,000 — — $ 301,854,000 $ 300,416,000 $ 226,828,000 $ 225,537,000 The following table summarizes the contractual maturities of investment securities at March 31, 2016 : 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 $ 2,599,000 $ 2,633,000 $ 1,825,000 $ 1,847,000 Due in 1 to 5 years 3,321,000 3,390,000 6,709,000 6,925,000 Due in 5 to 10 years 19,222,000 19,946,000 56,874,000 58,932,000 Due after 10 years 183,858,000 187,592,000 171,203,000 175,633,000 Equity securities 3,148,000 3,164,000 — — $ 212,148,000 $ 216,725,000 $ 236,611,000 $ 243,337,000 At March 31, 2017 , securities with a fair value of $227,683,000 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 $222,328,000 as of December 31, 2016 and $202,296,000 at March 31, 2016 , pledged for the same purposes. Gains and losses on the sale of securities available for sale 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, 2017 and 2016 : For the three months ended March 31, 2017 2016 Proceeds from sales of securities $ 3,000 $ 8,868,000 Gross realized gains 3,000 536,000 Gross realized losses — — Net gain $ 3,000 $ 536,000 Related income taxes $ 1,000 $ 188,000 Management reviews securities with unrealized losses for other than temporary impairment. As of March 31, 2017 , there were 311 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 13 had been temporarily impaired for 12 months or more. At the present time, there have been no material changes in the credit quality of these securities resulting in other than temporary impairment, and in Management's opinion, no additional write-down for other-than-temporary impairment is warranted. Information regarding securities temporarily impaired as of March 31, 2017 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 $ 10,824,000 $ (317,000 ) $ — $ — $ 10,824,000 $ (317,000 ) Mortgage-backed securities 198,068,000 (3,193,000 ) 2,432,000 (146,000 ) 200,500,000 (3,339,000 ) State and political subdivisions 78,516,000 (4,134,000 ) — — 78,516,000 (4,134,000 ) Other equity securities — — 62,000 (4,000 ) 62,000 (4,000 ) $ 287,408,000 $ (7,644,000 ) $ 2,494,000 $ (150,000 ) $ 289,902,000 $ (7,794,000 ) As of December 31, 2016 , there were 299 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 15 had been temporarily impaired for 12 months or more. Information regarding securities temporarily impaired as of December 31, 2016 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 $ 6,642,000 $ (233,000 ) $ — $ — $ 6,642,000 $ (233,000 ) Mortgage-backed securities 197,528,000 (3,090,000 ) 2,905,000 (184,000 ) 200,433,000 (3,274,000 ) State and political subdivisions 72,348,000 (4,060,000 ) — — 72,348,000 (4,060,000 ) Other equity securities — — 128,000 (7,000 ) 128,000 (7,000 ) $ 276,518,000 $ (7,383,000 ) $ 3,033,000 $ (191,000 ) $ 279,551,000 $ (7,574,000 ) As of March 31, 2016 , there were 34 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 12 had been temporarily impaired for 12 months or more. Information regarding securities temporarily impaired as of March 31, 2016 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 $ — $ — $ 4,893,000 $ (107,000 ) $ 4,893,000 $ (107,000 ) Mortgage-backed securities 17,125,000 (170,000 ) 1,866,000 (70,000 ) 18,991,000 (240,000 ) State and political subdivisions 522,000 — 1,417,000 (19,000 ) 1,939,000 (19,000 ) Other equity securities 235,000 (6,000 ) 106,000 (17,000 ) 341,000 (23,000 ) $ 17,882,000 $ (176,000 ) $ 8,282,000 $ (213,000 ) $ 26,164,000 $ (389,000 ) 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 $133,000 at March 31, 2017 . 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 much of its wholesale funding needs. As of March 31, 2017 and 2016 , and December 31, 2016 , the Bank's investment in FHLB stock totaled $12,326,000 , $12,838,000 and $10,893,000 , 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, 2017 . The Bank will continue to monitor its investment in FHLB stock.

Loans

Loans	3 Months Ended
	Mar. 31, 2017
Loans and Leases Receivable Disclosure [Abstract]
Loans	Loans The following table shows the composition of the Company's loan portfolio as of March 31, 2017 and 2016 and at December 31, 2016 : March 31, 2017 December 31, 2016 March 31, 2016 Commercial Real estate $ 304,663,000 28.0 % $ 302,506,000 28.2 % $ 279,683,000 27.8 % Construction 28,775,000 2.6 % 25,406,000 2.4 % 20,138,000 2.0 % Other 158,507,000 14.4 % 150,769,000 14.1 % 133,629,000 13.3 % Municipal 28,327,000 2.6 % 27,056,000 2.5 % 19,042,000 1.9 % Residential Term 421,202,000 38.7 % 411,469,000 38.4 % 405,495,000 40.3 % Construction 13,717,000 1.3 % 18,303,000 1.7 % 11,754,000 1.2 % Home equity line of credit 110,016,000 10.1 % 110,907,000 10.4 % 110,249,000 11.0 % Consumer 24,528,000 2.3 % 25,110,000 2.3 % 24,952,000 2.5 % Total $ 1,089,735,000 100.0 % $ 1,071,526,000 100.0 % $ 1,004,942,000 100.0 % Loan balances include net deferred loan costs of $5,167,000 as of March 31, 2017 , $4,921,000 as of December 31, 2016 , and $4,053,000 as of March 31, 2016 . Pursuant to collateral agreements, qualifying first mortgage loans, which totaled $254,512,000 at March 31, 2017 , $257,122,000 at December 31, 2016 , and $277,905,000 at March 31, 2016 , were used to collateralize borrowings from the FHLB. In addition, commercial, construction and home equity loans totaling $285,464,000 at March 31, 2017 , $261,463,000 at December 31, 2016 , and $258,369,000 at March 31, 2016 , 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, 2017 , 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 $ 142,000 $ 772,000 $ 1,823,000 $ 2,737,000 $ 301,926,000 $ 304,663,000 $ — Construction 20,000 — — 20,000 28,755,000 28,775,000 — Other 199,000 154,000 439,000 792,000 157,715,000 158,507,000 — Municipal — — — — 28,327,000 28,327,000 — Residential Term 3,555,000 — 1,603,000 5,158,000 416,044,000 421,202,000 — Construction — — — — 13,717,000 13,717,000 — Home equity line of credit 392,000 167,000 773,000 1,332,000 108,684,000 110,016,000 — Consumer 328,000 34,000 11,000 373,000 24,155,000 24,528,000 11,000 Total $ 4,636,000 $ 1,127,000 $ 4,649,000 $ 10,412,000 $ 1,079,323,000 $ 1,089,735,000 $ 11,000 Information on the past-due status of loans by class of financing receivable as of December 31, 2016 , 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 $ 1,039,000 $ 22,000 $ 2,415,000 $ 3,476,000 $ 299,030,000 $ 302,506,000 $ 753,000 Construction — — — — 25,406,000 25,406,000 — Other 202,000 33,000 796,000 1,031,000 149,738,000 150,769,000 20,000 Municipal — — — — 27,056,000 27,056,000 — Residential Term 631,000 3,970,000 1,802,000 6,403,000 405,066,000 411,469,000 — Construction — — — — 18,303,000 18,303,000 — Home equity line of credit 704,000 157,000 703,000 1,564,000 109,343,000 110,907,000 — Consumer 135,000 45,000 4,000 184,000 24,926,000 25,110,000 4,000 Total $ 2,711,000 $ 4,227,000 $ 5,720,000 $ 12,658,000 $ 1,058,868,000 $ 1,071,526,000 $ 777,000 Information on the past-due status of loans by class of financing receivable as of March 31, 2016 , 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 $ 428,000 $ 376,000 $ 451,000 $ 1,255,000 $ 278,428,000 $ 279,683,000 $ — Construction — — 150,000 150,000 19,988,000 20,138,000 — Other 323,000 110,000 — 433,000 133,196,000 133,629,000 — Municipal — — — — 19,042,000 19,042,000 — Residential Term 2,321,000 62,000 2,400,000 4,783,000 400,712,000 405,495,000 411,000 Construction — — — — 11,754,000 11,754,000 — Home equity line of credit 718,000 122,000 543,000 1,383,000 108,866,000 110,249,000 — Consumer 176,000 26,000 41,000 243,000 24,709,000 24,952,000 41,000 Total $ 3,966,000 $ 696,000 $ 3,585,000 $ 8,247,000 $ 996,695,000 $ 1,004,942,000 $ 452,000 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, 2017 and 2016 and at December 31, 2016 is presented in the following table: March 31, 2017 December 31, 2016 March 31, 2016 Commercial Real estate $ 2,625,000 $ 1,907,000 $ 920,000 Construction — — 180,000 Other 938,000 964,000 69,000 Municipal — — — Residential Term 4,028,000 4,060,000 4,677,000 Construction — — — Home equity line of credit 909,000 843,000 841,000 Consumer — — — Total $ 8,500,000 $ 7,774,000 $ 6,687,000 Impaired loans include troubled debt restructured 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, 2017 is presented in the following table: For the three months ended March 31, 2017 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Recognized Interest Income With No Related Allowance Commercial Real estate $ 5,949,000 $ 6,450,000 $ — $ 5,444,000 $ 51,000 Construction — — — — — Other 1,476,000 1,636,000 — 1,595,000 22,000 Municipal — — — — — Residential Term 11,388,000 12,470,000 — 11,402,000 129,000 Construction — — — — — Home equity line of credit 1,422,000 1,752,000 — 1,376,000 9,000 Consumer — — — — — $ 20,235,000 $ 22,308,000 $ — $ 19,817,000 $ 211,000 With an Allowance Recorded Commercial Real estate $ 4,722,000 $ 4,908,000 $ 351,000 $ 4,741,000 $ 46,000 Construction 763,000 763,000 101,000 763,000 9,000 Other 234,000 272,000 39,000 125,000 4,000 Municipal — — — — — Residential Term 1,872,000 2,020,000 251,000 2,077,000 23,000 Construction — — — — — Home equity line of credit 26,000 27,000 26,000 26,000 — Consumer — — — — — $ 7,617,000 $ 7,990,000 $ 768,000 $ 7,732,000 $ 82,000 Total Commercial Real estate $ 10,671,000 $ 11,358,000 $ 351,000 $ 10,185,000 $ 97,000 Construction 763,000 763,000 101,000 763,000 9,000 Other 1,710,000 1,908,000 39,000 1,720,000 26,000 Municipal — — — — — Residential Term 13,260,000 14,490,000 251,000 13,479,000 152,000 Construction — — — — — Home equity line of credit 1,448,000 1,779,000 26,000 1,402,000 9,000 Consumer — — — — — $ 27,852,000 $ 30,298,000 $ 768,000 $ 27,549,000 $ 293,000 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, 2016 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 $ 5,201,000 $ 5,614,000 $ — $ 6,252,000 $ 220,000 Construction — — — 32,000 — Other 1,671,000 1,852,000 — 1,074,000 86,000 Municipal — — — — — Residential Term 11,483,000 12,654,000 — 11,025,000 442,000 Construction — — — — — Home equity line of credit 1,361,000 1,733,000 — 1,213,000 33,000 Consumer — — — 9,000 — $ 19,716,000 $ 21,853,000 $ — $ 19,605,000 $ 781,000 With an Allowance Recorded Commercial Real estate $ 4,820,000 $ 4,925,000 $ 505,000 $ 4,153,000 $ 186,000 Construction 763,000 763,000 100,000 816,000 36,000 Other 72,000 72,000 39,000 317,000 — Municipal — — — — — Residential Term 2,186,000 2,328,000 304,000 3,209,000 101,000 Construction — — — — — Home equity line of credit 26,000 28,000 26,000 69,000 — Consumer — — — 48,000 — $ 7,867,000 $ 8,116,000 $ 974,000 $ 8,612,000 $ 323,000 Total Commercial Real estate $ 10,021,000 $ 10,539,000 $ 505,000 $ 10,405,000 $ 406,000 Construction 763,000 763,000 100,000 848,000 36,000 Other 1,743,000 1,924,000 39,000 1,391,000 86,000 Municipal — — — — — Residential Term 13,669,000 14,982,000 304,000 14,234,000 543,000 Construction — — — — — Home equity line of credit 1,387,000 1,761,000 26,000 1,282,000 33,000 Consumer — — — 57,000 — $ 27,583,000 $ 29,969,000 $ 974,000 $ 28,217,000 $ 1,104,000 A breakdown of impaired loans by class of financing receivable as of and for the period ended March 31, 2016 is presented in the following table: For the three months ended March 31, 2016 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Recognized Interest Income With No Related Allowance Commercial Real estate $ 7,381,000 $ 7,712,000 $ — $ 7,221,000 $ 79,000 Construction 179,000 238,000 — 80,000 1,000 Other 1,097,000 1,137,000 — 1,121,000 8,000 Municipal — — — — — Residential Term 10,543,000 11,541,000 — 10,715,000 91,000 Construction — — — — — Home equity line of credit 1,344,000 2,023,000 — 1,353,000 8,000 Consumer — — — — — $ 20,544,000 $ 22,651,000 $ — $ 20,490,000 $ 187,000 With an Allowance Recorded Commercial Real estate $ 3,129,000 $ 3,213,000 $ 69,000 $ 3,399,000 $ 36,000 Construction 788,000 788,000 96,000 926,000 8,000 Other 88,000 96,000 21,000 80,000 — Municipal — — — — — Residential Term 3,997,000 4,265,000 384,000 3,995,000 43,000 Construction — — — — — Home equity line of credit 64,000 65,000 29,000 83,000 1,000 Consumer — — — — — $ 8,066,000 $ 8,427,000 $ 599,000 $ 8,483,000 $ 88,000 Total Commercial Real estate $ 10,510,000 $ 10,925,000 $ 69,000 $ 10,620,000 $ 115,000 Construction 967,000 1,026,000 96,000 1,006,000 9,000 Other 1,185,000 1,233,000 21,000 1,201,000 8,000 Municipal — — — — — Residential Term 14,540,000 15,806,000 384,000 14,710,000 134,000 Construction — — — — — Home equity line of credit 1,408,000 2,088,000 29,000 1,436,000 9,000 Consumer — — — — — $ 28,610,000 $ 31,078,000 $ 599,000 $ 28,973,000 $ 275,000 Troubled Debt Restructured A troubled debt restructured ("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, 2017 , the Company had 70 loans with a value of $21,121,000 that have been classified as TDRs. This compares to 71 loans with a value of $21,526,000 and 82 loans with a value of $23,628,000 classified as TDRs as of December 31, 2016 and March 31, 2016 , 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, 2017 : Number of Loans Balance Specific Reserves Commercial Real estate 10 $ 8,703,000 $ 82,000 Construction 1 763,000 101,000 Other 5 772,000 2,000 Municipal — — — Residential Term 51 10,344,000 201,000 Construction — — — Home equity line of credit 3 539,000 — Consumer — — — 70 $ 21,121,000 $ 386,000 The following table shows TDRs by class and the specific reserve as of December 31, 2016 : Number of Loans Balance Specific Reserves Commercial Real estate 10 $ 8,937,000 $ 375,000 Construction 1 763,000 100,000 Other 5 779,000 — Municipal — — — Residential Term 52 10,503,000 261,000 Construction — — — Home equity line of credit 3 544,000 — Consumer — — — 71 $ 21,526,000 $ 736,000 The following table shows TDRs by class and the specific reserve as of March 31, 2016 : Number of Loans Balance Specific Reserves Commercial Real estate 14 $ 10,133,000 $ 65,000 Construction 1 788,000 96,000 Other 10 1,116,000 — Municipal — — — Residential Term 53 10,856,000 275,000 Construction — — — Home equity line of credit 4 735,000 — Consumer — — — 82 $ 23,628,000 $ 436,000 As of March 31, 2017 , nine of the loans classified as TDRs with a total balance of $1,651,000 were more than 30 days past due. None of these loans 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, 2017 : Number of Loans Balance Specific Reserves Commercial Real estate 1 $ 658,000 $ — Construction — — — Other — — — Municipal — — — Residential Term 7 826,000 — Construction — — — Home equity line of credit 1 167,000 — Consumer — — — 9 $ 1,651,000 $ — As of March 31, 2016 , six of the loans classified as TDRs with a total balance of $890,000 were more than 30 days past due. None of these loans 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, 2016 : Number of Loans Balance Specific Reserves Commercial Real estate 1 $ 155,000 $ — Construction — — — Other — — — Municipal — — — Residential Term 5 735,000 46,000 Construction — — — Home equity line of credit — — — Consumer — — — 6 $ 890,000 $ 46,000 For the three months ended March 31, 2017 and 2016, no loans were placed on TDR status. As of March 31, 2017 , Management is aware of six loans classified as TDRs that are involved in bankruptcy with an outstanding balance of $1,524,000 . There were also nine loans with an outstanding balance of $1,770,000 that were classified as TDRs and on non-accrual status, of which one loan with an outstanding balance of 658,000 was in the process of foreclosure. Residential Mortgage Loans in Process of Foreclosure As of March 31, 2017 , there were 12 mortgage loans collateralized by residential real estate in the process of foreclosure with a total balance of $ 1,773,000 ; this compares to 14 mortgage loans collateralized by residential real estate in the process of foreclosure with a total balance of $1,399,000 as of March 31, 2016 .

Allowance for Loan Losses

Allowance for Loan Losses	3 Months Ended
	Mar. 31, 2017
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. 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, 2017 , December 31, 2016 , and March 31, 2016 , by class of financing receivable and allowance element, is presented in the following tables: As of March 31, 2017 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 $ 351,000 $ 1,631,000 $ 2,033,000 $ — $ 4,015,000 Construction 101,000 151,000 189,000 — 441,000 Other 39,000 840,000 1,046,000 — 1,925,000 Municipal — — 18,000 — 18,000 Residential Term 251,000 282,000 436,000 — 969,000 Construction — 9,000 15,000 — 24,000 Home equity line of credit 26,000 439,000 346,000 — 811,000 Consumer — 337,000 236,000 — 573,000 Unallocated — — — 1,591,000 1,591,000 $ 768,000 $ 3,689,000 $ 4,319,000 $ 1,591,000 $ 10,367,000 As of December 31, 2016 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 $ 505,000 $ 1,471,000 $ 2,012,000 $ — $ 3,988,000 Construction 100,000 125,000 171,000 — 396,000 Other 39,000 735,000 1,006,000 — 1,780,000 Municipal — — 18,000 — 18,000 Residential Term 304,000 563,000 421,000 — 1,288,000 Construction — 25,000 19,000 — 44,000 Home equity line of credit 26,000 444,000 337,000 — 807,000 Consumer — 328,000 231,000 — 559,000 Unallocated — — — 1,258,000 1,258,000 $ 974,000 $ 3,691,000 $ 4,215,000 $ 1,258,000 $ 10,138,000 As of March 31, 2016 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 $ 69,000 $ 1,236,000 $ 2,219,000 $ — $ 3,524,000 Construction 96,000 89,000 160,000 — 345,000 Other 21,000 592,000 1,063,000 — 1,676,000 Municipal — — 17,000 — 17,000 Residential Term 384,000 630,000 460,000 — 1,474,000 Construction — 19,000 14,000 — 33,000 Home equity line of credit 29,000 502,000 374,000 — 905,000 Consumer — 413,000 241,000 — 654,000 Unallocated — — — 1,591,000 1,591,000 $ 599,000 $ 3,481,000 $ 4,548,000 $ 1,591,000 $ 10,219,000 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. The qualitative portion of the allowance for loan losses was 0.40% of related loans as of March 31, 2017 and 0.39% as of December 31, 2016 . The qualitative portion increased $104,000 between December 31, 2016 and March 31, 2017 due to loan growth and a combination of some slippage in certain economic factors and internal loan quality measures. The unallocated component of the allowance totaled $1,591,000 at March 31, 2017 , or 15.3% of the total reserve. This compares to $1,258,000 or 12.4% as of December 31, 2016 . The allowance for loan losses as a percent of total loans stood at 0.95% as of March 31, 2017 and December 31, 2016. This compares to 1.02% as of March 31, 2016 . 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 state 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 27.8% of capital are below the regulatory limit of 100.0% of capital at March 31, 2017 . Construction loans and non-owner-occupied commercial real estate loans are at 107.1% of total capital, below the regulatory limit of 300.0% of capital at March 31, 2017 . The process of establishing the allowance with respect to the commercial loan portfolio begins when a loan officer initially assigns each loan a risk rating, using established credit criteria. Approximately 50% of the outstanding loans and commitments are subject to review and validation annually by an independent consulting firm, as well as periodically 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, 2017 : Commercial Real Estate Commercial Construction Commercial Other Municipal Loans All Risk- Rated Loans 1 Strong $ 2,000 $ — $ 499,000 $ — $ 501,000 2 Above Average 14,213,000 45,000 8,222,000 27,479,000 49,959,000 3 Satisfactory 83,021,000 2,051,000 47,724,000 848,000 133,644,000 4 Average 138,865,000 18,283,000 72,791,000 — 229,939,000 5 Watch 45,053,000 8,239,000 14,280,000 — 67,572,000 6 OAEM 4,036,000 — 5,661,000 — 9,697,000 7 Substandard 19,473,000 157,000 9,330,000 — 28,960,000 8 Doubtful — — — — — Total $ 304,663,000 $ 28,775,000 $ 158,507,000 $ 28,327,000 $ 520,272,000 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, 2016 : Commercial Real Estate Commercial Construction Commercial Other Municipal Loans All Risk- Rated Loans 1 Strong $ 2,000 $ — $ 850,000 $ — $ 852,000 2 Above Average 13,981,000 49,000 8,934,000 25,527,000 48,491,000 3 Satisfactory 81,286,000 1,345,000 48,212,000 1,529,000 132,372,000 4 Average 139,421,000 16,506,000 65,146,000 — 221,073,000 5 Watch 43,181,000 7,349,000 16,864,000 — 67,394,000 6 OAEM 4,569,000 — 1,587,000 — 6,156,000 7 Substandard 20,066,000 157,000 9,176,000 — 29,399,000 8 Doubtful — — — — — Total $ 302,506,000 $ 25,406,000 $ 150,769,000 $ 27,056,000 $ 505,737,000 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, 2016 : Commercial Real Estate Commercial Construction Commercial Other Municipal Loans All Risk- Rated Loans 1 Strong $ 6,000 $ — $ 990,000 $ — $ 996,000 2 Above Average 27,586,000 55,000 7,707,000 17,331,000 52,679,000 3 Satisfactory 59,080,000 2,898,000 31,629,000 1,711,000 95,318,000 4 Average 129,432,000 11,926,000 67,550,000 — 208,908,000 5 Watch 34,025,000 5,109,000 20,345,000 — 59,479,000 6 OAEM 9,821,000 — 2,490,000 — 12,311,000 7 Substandard 19,733,000 150,000 2,918,000 — 22,801,000 8 Doubtful — — — — — Total $ 279,683,000 $ 20,138,000 $ 133,629,000 $ 19,042,000 $ 452,492,000 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, 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, 2017 . The following table presents allowance for loan losses activity by class for the three months ended March 31, 2017 , and allowance for loan loss balances by class and related loan balances by class as of March 31, 2017 : Commercial Municipal Residential Home Equity Line of Credit Consumer Unallocated Total Real Estate Construction Other Term Construction For the three months ended March 31, 2017 Beginning balance $ 3,988,000 $ 396,000 $ 1,780,000 $ 18,000 $ 1,288,000 $ 44,000 $ 807,000 $ 559,000 $ 1,258,000 $ 10,138,000 Charge offs 164,000 — — — 53,000 — 7,000 103,000 — 327,000 Recoveries — — 11,000 — 14,000 — — 31,000 — 56,000 Provision (credit) 191,000 45,000 134,000 — (280,000 ) (20,000 ) 11,000 86,000 333,000 500,000 Ending balance $ 4,015,000 $ 441,000 $ 1,925,000 $ 18,000 $ 969,000 $ 24,000 $ 811,000 $ 573,000 $ 1,591,000 $ 10,367,000 Allowance for loan losses as of March 31, 2017 Ending balance specifically evaluated for impairment $ 351,000 $ 101,000 $ 39,000 $ — $ 251,000 $ — $ 26,000 $ — $ — $ 768,000 Ending balance collectively evaluated for impairment $ 3,664,000 $ 340,000 $ 1,886,000 $ 18,000 $ 718,000 $ 24,000 $ 785,000 $ 573,000 $ 1,591,000 $ 9,599,000 Related loan balances as of March 31, 2017 Ending balance $ 304,663,000 $ 28,775,000 $ 158,507,000 $ 28,327,000 $ 421,202,000 $ 13,717,000 $ 110,016,000 $ 24,528,000 $ — $ 1,089,735,000 Ending balance specifically evaluated for impairment $ 10,671,000 $ 763,000 $ 1,710,000 $ — $ 13,260,000 $ — $ 1,448,000 $ — $ — $ 27,852,000 Ending balance collectively evaluated for impairment $ 293,992,000 $ 28,012,000 $ 156,797,000 $ 28,327,000 $ 407,942,000 $ 13,717,000 $ 108,568,000 $ 24,528,000 $ — $ 1,061,883,000 The following table presents allowance for loan losses activity by class for the year-ended December 31, 2016 and allowance for loan loss balances by class and related loan balances by class as of December 31, 2016 : Municipal Residential Home Equity Line of Credit Consumer Unallocated Total Real Estate Construction Other Term Construction Beginning balance $ 3,120,000 $ 580,000 $ 1,452,000 $ 17,000 $ 1,391,000 $ 24,000 $ 893,000 $ 566,000 $ 1,873,000 $ 9,916,000 Charge offs 294,000 75,000 376,000 — 379,000 — 147,000 450,000 — 1,721,000 Recoveries — 8,000 129,000 — 93,000 — 5,000 108,000 — 343,000 Provision (credit) 1,162,000 (117,000 ) 575,000 1,000 183,000 20,000 56,000 335,000 (615,000 ) 1,600,000 Ending balance $ 3,988,000 $ 396,000 $ 1,780,000 $ 18,000 $ 1,288,000 $ 44,000 $ 807,000 $ 559,000 $ 1,258,000 $ 10,138,000 Ending balance specifically evaluated for impairment $ 505,000 $ 100,000 $ 39,000 $ — $ 304,000 $ — $ 26,000 $ — $ — $ 974,000 Ending balance collectively evaluated for impairment $ 3,483,000 $ 296,000 $ 1,741,000 $ 18,000 $ 984,000 $ 44,000 $ 781,000 $ 559,000 $ 1,258,000 $ 9,164,000 Ending balance $ 302,506,000 $ 25,406,000 $ 150,769,000 $ 27,056,000 $ 411,469,000 $ 18,303,000 $ 110,907,000 $ 25,110,000 $ — $ 1,071,526,000 Ending balance specifically evaluated for impairment $ 10,021,000 $ 763,000 $ 1,743,000 $ — $ 13,669,000 $ — $ 1,387,000 $ — $ — $ 27,583,000 Ending balance collectively evaluated for impairment $ 292,485,000 $ 24,643,000 $ 149,026,000 $ 27,056,000 $ 397,800,000 $ 18,303,000 $ 109,520,000 $ 25,110,000 $ — $ 1,043,943,000 The following table presents allowance for loan losses activity by class for the three months ended March 31, 2016 , and allowance for loan loss balances by class and related loan balances by class as of March 31, 2016 : Commercial Municipal Residential Home Equity Line of Credit Consumer Unallocated Total Real Estate Construction Other Term Construction For the three months ended March 31, 2016 Beginning balance $ 3,120,000 $ 580,000 $ 1,452,000 $ 17,000 $ 1,391,000 $ 24,000 $ 893,000 $ 566,000 $ 1,873,000 $ 9,916,000 Charge offs — 58,000 — — 20,000 — 49,000 63,000 — 190,000 Recoveries — — 20,000 — 65,000 — 1,000 32,000 — 118,000 Provision (credit) 404,000 (177,000 ) 204,000 — 38,000 9,000 60,000 119,000 (282,000 ) 375,000 Ending balance $ 3,524,000 $ 345,000 $ 1,676,000 $ 17,000 $ 1,474,000 $ 33,000 $ 905,000 $ 654,000 $ 1,591,000 $ 10,219,000 Allowance for loan losses as of March 31, 2016 Ending balance specifically evaluated for impairment $ 69,000 $ 96,000 $ 21,000 $ — $ 384,000 $ — $ 29,000 $ — $ — $ 599,000 Ending balance collectively evaluated for impairment $ 3,455,000 $ 249,000 $ 1,655,000 $ 17,000 $ 1,090,000 $ 33,000 $ 876,000 $ 654,000 $ 1,591,000 $ 9,620,000 Related loan balances as of March 31, 2016 Ending balance $ 279,683,000 $ 20,138,000 $ 133,629,000 $ 19,042,000 $ 405,495,000 $ 11,754,000 $ 110,249,000 $ 24,952,000 $ — $ 1,004,942,000 Ending balance specifically evaluated for impairment $ 10,510,000 $ 967,000 $ 1,185,000 $ — $ 14,540,000 $ — $ 1,408,000 $ — $ — $ 28,610,000 Ending balance collectively evaluated for impairment $ 269,173,000 $ 19,171,000 $ 132,444,000 $ 19,042,000 $ 390,955,000 $ 11,754,000 $ 108,841,000 $ 24,952,000 $ — $ 976,332,000

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Options and 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 our business. 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, 2017 , 127,560 shares of restricted stock had been granted under the 2010 Plan, of which 71,086 shares remain restricted as of March 31, 2017 as detailed in the following table: Year Granted Vesting Term (In Years) Shares Remaining Term (In Years) 2013 5.0 14,776 0.6 2014 5.0 10,422 1.6 2015 5.0 12,023 2.6 2016 5.0 15,015 3.6 2017 1.0 3,976 0.9 2017 3.0 4,902 2.9 2017 5.0 9,972 4.9 71,086 2.5 The compensation cost related to these restricted stock grants is $1,428,000 and will be recognized over the vesting terms of each grant. In the three months ended March 31, 2017 , $83,000 of expense was recognized for these restricted shares, leaving $911,000 in unrecognized expense as of March 31, 2017 . In the three months ended March 31, 2016 , $49,000 of expense was recognized for restricted shares, leaving $706,000 in unrecognized expense as of March 31, 2016 .

Preferred and Common Stock

Preferred and Common Stock	3 Months Ended
	Mar. 31, 2017
Stockholders' Equity Note [Abstract]
Preferred and Common Stock	Preferred and Common Stock Preferred Stock On January 9, 2009, the Company issued $25,000,000 in Fixed Rate Cumulative Perpetual Preferred Stock, Series A, to the U.S. Treasury ("Treasury') under the Capital Purchase Program ("the CPP Shares"). The CPP Shares qualified as Tier 1 capital on the Company's books for regulatory purposes and ranked senior to the Company's common stock and senior or at an equal level in the Company's capital structure to any other shares of preferred stock the Company may issue in the future. In three separate transactions in 2012 and 2013, the Company repurchased all of the CPP shares from the Treasury. Incident to such issuance of the CPP shares, the Company issued to the Treasury warrants (the "Warrants") to purchase up to 225,904 shares of the Company's common stock at a price per share of $16.60 (subject to adjustment). The Warrants (and any shares of common stock issuable pursuant to the Warrants) are freely transferable by the Treasury to third parties. The Warrants have a term of ten years and could be exercised by the Treasury or a subsequent holder at any time or from time to time during their term. To the extent they had not previously been exercised, the Warrants will expire after ten years. The Warrants were unchanged as a result of the CPP Shares repurchase transactions. In May 2015, the Treasury sold the Warrants to private parties. In accordance with the contractual terms of the Warrants, the number of shares issuable upon exercise and strike price were adjusted at the time of the sale. As a result of this transaction, the aggregate number of shares of common stock issuable under the Warrants were adjusted to 226,819 shares with a strike price of $16.53 per share. In November 2016, the Company repurchased all of the outstanding Warrants for an aggregate purchase price of $1,750,000 . Common Stock Proceeds from sale of common stock totaled $185,000 and $121,000 for the three months ended March 31, 2017 and 2016 , respectively.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2017
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, 2017 and 2016 : Income (Numerator) Shares (Denominator) Per-Share Amount For the three months ended March 31, 2017 Net income as reported $ 4,637,000 Basic EPS: Income available to common shareholders 4,637,000 10,734,281 $ 0.43 Effect of dilutive securities: restricted stock 73,623 Diluted EPS: Income available to common shareholders plus assumed conversions $ 4,637,000 10,807,904 $ 0.43 For the three months ended March 31, 2016 Net income as reported $ 4,503,000 Basic EPS: Income available to common shareholders 4,503,000 10,699,440 $ 0.42 Effect of dilutive securities: restricted stock and warrants 95,672 Diluted EPS: Income available to common shareholders plus assumed conversions $ 4,503,000 10,795,112 $ 0.42 All earnings per share calculations have been made using the weighted average number of shares outstanding during the period. The potentially dilutive securities are unvested shares of restricted stock granted to certain key members of Management and the warrants. The number of dilutive shares is calculated using the treasury method, assuming that all warrants were exercisable at the end of each period. Warrants that are out-of-the-money are not considered in the calculation of dilutive earnings per share as the effect would be anti-dilutive. The following table presents the number of warrants outstanding as of March 31, 2016 and the amount for which the average market price at period end is above or below the strike price: Outstanding In-the-Money Out-of-the-Money For the three months ended March 31, 2016 Warrants issued to private parties 226,819 226,819 — Total 226,819 226,819 —

Employee Benefit Plans

Employee Benefit Plans	3 Months Ended
	Mar. 31, 2017
General Discussion of Pension and Other Postretirement Benefits [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 2016 . The amount for 2017 has not been established. The expense related to the 401(k) plan was $130,000 and $120,000 for the three months ended March 31, 2017 and 2016 , 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 $54,000 for the three months ended March 31, 2017 and 2016. As of March 31, 2017 , the associated accrued liability included in other liabilities in the balance sheet was $3,045,000 compared to $3,073,000 and $3,082,000 at December 31, 2016 and March 31, 2016 , 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 seven 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, 2017 2016 Change in benefit obligation Benefit obligation at beginning of year $ 1,870,000 $ 1,967,000 Interest cost 19,000 21,000 Benefits paid (32,000 ) (30,000 ) Benefit obligation at end of period $ 1,857,000 $ 1,958,000 Funded status Benefit obligation at end of period $ (1,857,000 ) $ (1,958,000 ) Unamortized loss 102,000 240,000 Accrued benefit cost at end of period $ (1,755,000 ) $ (1,718,000 ) The following table sets forth the net periodic pension cost: For the three months ended March 31, 2017 2016 Components of net periodic benefit cost Interest cost $ 19,000 $ 21,000 Net periodic benefit cost $ 19,000 $ 21,000 Amounts not yet reflected in net periodic benefit cost and included in accumulated other comprehensive income (loss) are as follows: March 31, December 31, 2016 March 31, Unamortized net actuarial loss $ (156,000 ) $ (156,000 ) $ (240,000 ) Deferred tax benefit at 35% 54,000 54,000 84,000 Net unrecognized postretirement benefits included in accumulated other comprehensive income (loss) $ (102,000 ) $ (102,000 ) $ (156,000 ) A weighted average discount rate of 4.25% 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 2017 are $126,000 . Plan expense for 2017 is estimated to be $77,000 . 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, 2017
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, 2017 and 2016 . For the three months ended March 31, 2017 2016 Balance at beginning of period $ (935,000 ) $ 1,123,000 Unrealized gains arising during the period 5,000 3,385,000 Reclassification of realized gains during the period (3,000 ) (536,000 ) Related deferred taxes (1,000 ) (997,000 ) Net change 1,000 1,852,000 Balance at end of period $ (934,000 ) $ 2,975,000 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, 2017 and 2016 . For the three months ended March 31, 2017 2016 Balance at beginning of period $ (129,000 ) $ (112,000 ) Amortization of net unrealized losses (6,000 ) (17,000 ) Related deferred taxes 2,000 6,000 Net change (4,000 ) (11,000 ) Balance at end of period $ (133,000 ) $ (123,000 ) 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, 2017 and 2016 . For the three months ended March 31, 2017 2016 Balance at beginning of period $ 1,163,000 $ — Unrealized gains on cash flow hedging derivatives arising during the period 96,000 — Related deferred taxes (33,000 ) — Net change 63,000 — Balance at end of period $ 1,226,000 $ — 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, 2017 and 2016 . For the three months ended March 31, 2017 2016 Unrecognized postretirement benefits at beginning of period $ (102,000 ) $ (156,000 ) Amortization of unrecognized transition obligation — — Change in unamortized net actuarial gain (loss) — — Related deferred taxes — — Unrecognized postretirement benefits at end of period $ (102,000 ) $ (156,000 )

Financial Derivative Instrument

Financial Derivative Instruments	3 Months Ended
	Mar. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Financial Derivative Instruments	Financial Derivative Instruments As part of its overall asset and liability management strategy, the Company periodically uses derivative instruments to minimize significant unplanned fluctuations in earnings and cash flows caused by interest rate volatility. The Company’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 Company recognizes its derivative instruments in the consolidated balance sheet at fair value. On the date the derivative instrument is entered into, the Company designates whether the derivative is part of a hedging relationship (i.e., cash flow or fair value hedge). The Company formally documents relationships between hedging instruments and hedged items, as well as its risk management objective and strategy for undertaking hedge transactions. The Company 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 Company 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. In 2016, interest rate swaps were contracted to limit the Company’s exposure to rising interest rates on short-term liabilities indexed to one-month London Inter-bank Offered Rates (LIBOR). The interest rate swaps were designated as cash flow hedges. The details of the interest rate swap agreements are as follows: As of March 31 2017 2016 Notional Amount Effective Date Maturity Date Variable Index Received Fixed Rate Paid Fair Value (1) Fair Value (1) $ 30,000,000 June 28, 2016 June 28, 2021 1-Month USD LIBOR 0.940 % $ 1,108,000 $ — $ 20,000,000 June 27, 2016 June 27, 2021 1-Month USD LIBOR 0.893 % $ 778,000 — $ 50,000,000 $ 1,886,000 $ — (1) Presented within other assets in the consolidated balance sheet. 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.

Mortgage Servicing Rights

Mortgage Servicing Rights	3 Months Ended
	Mar. 31, 2017
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, 2017 , the prepayment assumption using the PSA model was 200 , which translates into an anticipated prepayment rate of 12.00% . The discount rate is the quarterly average 10 year U.S. Treasury plus 5.00% . 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, 2017 and 2016 , servicing rights capitalized totaled $102,000 and $0 , respectively. Servicing rights amortized for the three-month periods ended March 31, 2017 and 2016 , were $95,000 and $97,000 respectively. The fair value of servicing rights was $1,853,000 , $1,696,000 and $1,543,000 at March 31, 2017 , December 31, 2016 and March 31, 2016 , respectively. The Bank serviced loans for others totaling $251,865,000 , $250,083,000 and $223,565,000 at March 31, 2017 , December 31, 2016 , and March 31, 2016 , respectively. Mortgage servicing rights are included in other assets and detailed in the following table: March 31, December 31, March 31, Mortgage servicing rights $ 4,491,000 $ 5,901,000 $ 5,747,000 Accumulated amortization (3,415,000 ) (4,680,000 ) (4,716,000 ) Impairment reserve (22,000 ) (108,000 ) (107,000 ) $ 1,054,000 $ 1,113,000 $ 924,000

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2017
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, 2013 through 2015.

Certificates of Deposit

Certificates of Deposit	3 Months Ended
	Mar. 31, 2017
Banking and Thrift [Abstract]
Certificates of Deposit	Certificates of Deposit The following table represents the breakdown of certificates of deposit at March 31, 2017 and 2016 , and at December 31, 2016 : March 31, 2017 December 31, 2016 March 31, 2016 Certificates of deposit < $100,000 $ 246,792,000 $ 195,115,000 $ 197,006,000 Certificates $100,000 to $250,000 236,971,000 240,904,000 226,644,000 Certificates $250,000 and over 43,286,000 40,601,000 49,062,000 $ 527,049,000 $ 476,620,000 $ 472,712,000

Reclassifications

Reclassifications	3 Months Ended
	Mar. 31, 2017
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, 2017
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. Cash, Cash Equivalents and Interest-Bearing Deposits in Other Banks The carrying values of cash equivalents, due from banks and federal funds sold approximate their relative fair values. As such, the Company classifies these financial instruments as Level 1. 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. The carrying values of restricted equity securities approximate fair values. As such, the Company classifies investment securities as Level 2. Loans Held for Sale Loans held for sale are recorded at the lower of aggregate carrying value or fair value. The fair value of mortgage loans held for sale is based on what secondary markets are currently offering for portfolios with similar characteristics. As such, the Company classifies mortgage loans held for sale as Level 2. Loans Fair values are estimated for portfolios of loans with similar financial characteristics. 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. Accrued Interest Receivable The fair value estimate of this financial instrument approximates the carrying value as this financial instrument has a short maturity. It is the Company's policy to stop accruing interest on loans for which it is probable that the interest is not collectible. Therefore, this financial instrument has been adjusted for estimated credit loss. As such, the Company classifies accrued interest receivable as Level 2. Deposits The fair value of deposits is based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently offered for deposits of similar remaining maturities. As such, the Company classifies deposits as Level 2. The fair value estimates do not include the benefit that results from the low-cost funding provided by the deposits compared to the cost of borrowing funds in the market. If that value were considered, the fair value of the Company's net assets could increase. 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, 2017 , 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. Accrued Interest Payable The fair value estimate approximates the carrying amount as this financial instrument has a short maturity. The Company classifies accrued interest payable as Level 2. Off-Balance-Sheet Instruments Off-balance-sheet instruments include loan commitments. Fair values for loan commitments have not been presented as the future revenue derived from such financial instruments is not significant. 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 that were measured at fair value on a recurring basis as of March 31, 2017 , December 31, 2016 and March 31, 2016 . At March 31, 2017 Level 1 Level 2 Level 3 Total Securities available for sale Mortgage-backed securities $ — $ 293,627,000 $ — $ 293,627,000 State and political subdivisions — 15,705,000 — 15,705,000 Other equity securities — 3,292,000 — 3,292,000 Total securities available for sale — 312,624,000 — 312,624,000 Interest rate swap agreements — 1,886,000 — 1,886,000 Total assets $ — $ 314,510,000 $ — $ 314,510,000 At December 31, 2016 Level 1 Level 2 Level 3 Total Securities available for sale Mortgage-backed securities $ — $ 280,604,000 $ — $ 280,604,000 State and political subdivisions — 16,482,000 — 16,482,000 Other equity securities — 3,330,000 — 3,330,000 Total securities available for sale $ — $ 300,416,000 $ — $ 300,416,000 Interest rate swap agreements $ — $ 1,790,000 $ — $ 1,790,000 Total assets $ — $ 302,206,000 $ — $ 302,206,000 At March 31, 2016 Level 1 Level 2 Level 3 Total Securities available for sale Mortgage-backed securities $ — $ 193,657,000 $ — $ 193,657,000 State and political subdivisions — 19,904,000 — 19,904,000 Other equity securities — 3,164,000 — 3,164,000 Total assets $ — $ 216,725,000 $ — $ 216,725,000 Assets and Liabilities 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 $78,000 , $205,000 and $130,000 at March 31, 2017 , December 31, 2016 , and March 31, 2016 , respectively. 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 $356,000 , $478,000 and $158,000 at March 31, 2017 , December 31, 2016 , and March 31, 2016 , respectively. At March 31, 2017 Level 1 Level 2 Level 3 Total Other real estate owned $ — $ 525,000 $ — $ 525,000 Impaired loans — 718,000 — 718,000 Total assets $ — $ 1,243,000 $ — $ 1,243,000 At December 31, 2016 Level 1 Level 2 Level 3 Total Other real estate owned $ — $ 375,000 $ — $ 375,000 Impaired loans — 827,000 — 827,000 Total assets $ — $ 1,202,000 $ — $ 1,202,000 At March 31, 2016 Level 1 Level 2 Level 3 Total Other real estate owned $ — $ 1,592,000 $ — $ 1,592,000 Impaired loans — 879,000 — 879,000 Total assets $ — $ 2,471,000 $ — $ 2,471,000 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. The carrying amount and estimated fair values for financial instruments as of March 31, 2017 were as follows: Carrying value Estimated fair value Level 1 Level 2 Level 3 Financial assets Cash and cash equivalents $ 17,600,000 $ 17,600,000 $ 17,600,000 $ — $ — Interest bearing deposits in other banks 3,272,000 3,272,000 3,272,000 — — Securities available for sale 312,624,000 312,624,000 — 312,624,000 — Securities to be held to maturity 240,829,000 239,378,000 — 239,378,000 — Restricted equity securities 13,363,000 13,363,000 — 13,363,000 — Loans held for sale 979,000 979,000 — 979,000 — Loans (net of allowance for loan losses) Commercial Real estate 299,920,000 295,039,000 — 424,000 294,615,000 Construction 28,254,000 27,794,000 — — 27,794,000 Other 156,233,000 154,823,000 — 33,000 154,790,000 Municipal 28,306,000 28,737,000 — — 28,737,000 Residential Term 420,057,000 420,393,000 — 261,000 420,132,000 Construction 13,689,000 13,593,000 — — 13,593,000 Home equity line of credit 109,058,000 107,823,000 — — 107,823,000 Consumer 23,851,000 23,519,000 — — 23,519,000 Total loans 1,079,368,000 1,071,721,000 — 718,000 1,071,003,000 Mortgage servicing rights 1,054,000 1,853,000 — 1,853,000 — Interest rate swap agreements 1,886,000 1,886,000 — 1,886,000 — Accrued interest receivable 6,854,000 6,854,000 — 6,854,000 — Financial liabilities Demand deposits $ 181,188,000 $ 171,979,000 $ — $ 171,979,000 $ — NOW deposits 273,050,000 250,323,000 — 250,323,000 — Money market deposits 142,220,000 130,374,000 — 130,374,000 — Savings deposits 222,976,000 193,142,000 — 193,142,000 — Local certificates of deposit 213,296,000 212,337,000 — 212,337,000 — National certificates of deposit 313,753,000 313,833,000 — 313,833,000 — Total deposits 1,346,483,000 1,271,988,000 — 1,271,988,000 — Repurchase agreements 76,342,000 72,399,000 — 72,399,000 — Federal Home Loan Bank advances 150,125,000 149,358,000 — 149,358,000 — Total borrowed funds 226,467,000 221,757,000 — 221,757,000 — Accrued interest payable 519,000 519,000 — 519,000 — The carrying amounts and estimated fair values for financial instruments as of December 31, 2016 were as follows: Carrying value Estimated fair value Level 1 Level 2 Level 3 Financial assets Cash and cash equivalents $ 17,366,000 $ 17,366,000 $ 17,366,000 $ — $ — Interest bearing deposits in other banks 293,000 293,000 293,000 — — Securities available for sale 300,416,000 300,416,000 — 300,416,000 — Securities to be held to maturity 226,828,000 225,537,000 — 225,537,000 — Restricted equity securities 11,930,000 11,930,000 — 11,930,000 — Loans held for sale 782,000 782,000 — 782,000 — Loans (net of allowance for loan losses) Commercial Real estate 297,952,000 293,103,000 — 558,000 292,545,000 Construction 24,954,000 24,548,000 — — 24,548,000 Other 148,737,000 147,394,000 — 33,000 147,361,000 Municipal 27,035,000 27,446,000 — — 27,446,000 Residential Term 409,999,000 410,327,000 — 236,000 410,091,000 Construction 18,253,000 18,125,000 — — 18,125,000 Home equity line of credit 109,986,000 108,740,000 — — 108,740,000 Consumer 24,472,000 24,131,000 — — 24,131,000 Total loans 1,061,388,000 1,053,814,000 — 827,000 1,052,987,000 Mortgage servicing rights 1,113,000 1,696,000 — 1,696,000 — Interest rate swap agreements 1,790,000 1,790,000 — 1,790,000 — Accrued interest receivable 5,532,000 5,532,000 — 5,532,000 — Financial liabilities Demand deposits $ 140,482,000 $ 133,342,000 $ — $ 133,342,000 $ — NOW deposits 282,971,000 259,418,000 — 259,418,000 — Money market deposits 125,544,000 115,087,000 — 115,087,000 — Savings deposits 217,340,000 188,260,000 — 188,260,000 — Local certificates of deposit 210,316,000 209,370,000 — 209,370,000 — National certificates of deposit 266,304,000 266,372,000 — 266,372,000 — Total deposits 1,242,957,000 1,171,849,000 — 1,171,849,000 — Repurchase agreements 84,174,000 79,827,000 — 79,827,000 — Federal Home Loan Bank advances 194,727,000 193,733,000 — 193,733,000 — Total borrowed funds 278,901,000 273,560,000 — 273,560,000 — Accrued interest payable 479,000 479,000 — 479,000 — The carrying amount and estimated fair values for financial instruments as of March 31, 2016 were as follows: Carrying value Estimated fair value Level 1 Level 2 Level 3 Financial assets Cash and cash equivalents $ 14,533,000 $ 14,533,000 $ 14,533,000 $ — $ — Interest bearing deposits in other banks 6,372,000 6,372,000 6,372,000 — — Securities available for sale 216,725,000 216,725,000 — 216,725,000 — Securities to be held to maturity 236,611,000 243,337,000 — 243,337,000 — Restricted equity securities 13,875,000 13,875,000 — 13,875,000 — Loans held for sale 224,000 224,000 — 224,000 — Loans (net of allowance for loan losses) Commercial Real estate 275,510,000 272,302,000 — — 272,302,000 Construction 19,729,000 19,499,000 — — 19,499,000 Other 131,644,000 131,637,000 — — 131,637,000 Municipal 19,022,000 19,994,000 — — 19,994,000 Residential Term 403,749,000 410,670,000 — 17,000 410,653,000 Construction 11,715,000 11,648,000 — — 11,648,000 Home equity line of credit 109,177,000 108,274,000 — 862,000 107,412,000 Consumer 24,177,000 24,153,000 — — 24,153,000 Total loans 994,723,000 998,177,000 — 879,000 997,298,000 Mortgage servicing rights 924,000 1,543,000 — 1,543,000 — Accrued interest receivable 6,271,000 6,271,000 — 6,271,000 — Financial liabilities Demand deposits $ 116,756,000 $ 116,614,000 $ — $ 116,614,000 $ — NOW deposits 240,112,000 230,934,000 — 230,934,000 — Money market deposits 74,643,000 68,221,000 — 68,221,000 — Savings deposits 205,218,000 187,346,000 — 187,346,000 — Local certificates of deposit 207,664,000 209,455,000 — 209,455,000 — National certificates of deposit 265,048,000 265,335,000 — 265,335,000 — Total deposits 1,109,441,000 1,077,905,000 — 1,077,905,000 — Repurchase agreements 91,399,000 88,442,000 — 88,442,000 — Federal Home Loan Bank advances 185,132,000 186,398,000 — 186,398,000 — Total borrowed funds 276,531,000 274,840,000 — 274,840,000 — Accrued interest payable 495,000 495,000 — 495,000 —

Impact of Recently Issued Accou

Impact of Recently Issued Accounting Standards	3 Months Ended
	Mar. 31, 2017
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Impact of Recently Issued Accounting Standards	Impact of Recently Issued Accounting Standards In January 2016, the FASB issued Accounting Standards Update ("ASU") No. 2016-01, Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Financial Liabilities. The ASU was issued to enhance the reporting model for financial instruments to provide users of financial statements with more decision-useful information. This ASU changes how entities account for equity investments that do not result in consolidation and are not accounted for under the equity method of accounting. The ASU also changes certain disclosure requirements and other aspects of U.S. GAAP, including a requirement for public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. The ASU is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The ASU will not have a material effect on the Company's consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842). The ASU was issued to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. The ASU is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018. Management is reviewing the guidance in the ASU to determine whether it will have a material effect on the Company’s consolidated financial statements. In March 2016, the FASB issued ASU No. 2016-09, Improvements to Employee Share-Based Payment Accounting. This ASU includes provisions intended to simplify various aspects related to how share-based payments are accounted for and presented in the financial statements. Some of the key provisions of this new ASU include: (1) companies will no longer record excess tax benefits and certain tax deficiencies in additional paid-in capital (APIC). Instead, they will record all excess tax benefits and tax deficiencies as income tax expense or benefit in the income statement, and APIC pools will be eliminated. The guidance also eliminates the requirement that excess tax benefits be realized before companies can recognize them. In addition, the guidance requires companies to present excess tax benefits as an operating activity on the statement of cash flows rather than as a financing activity; (2) increase the amount an employer can withhold to cover income taxes on awards and still qualify for the exception to liability classification for shares used to satisfy the employer’s statutory income tax withholding obligation. The new guidance will also require an employer to classify the cash paid to a tax authority when shares are withheld to satisfy its statutory income tax withholding obligation as a financing activity on its statement of cash flows (current guidance did not specify how these cash flows should be classified); and (3) permit companies to make an accounting policy election for the impact of forfeitures on the recognition of expense for share-based payment awards. Forfeitures can be estimated on the date the award is granted, or recognized when they occur. ASU No. 2016-09 is effective for interim and annual reporting periods beginning after December 15, 2016. The adoption of the ASU did not have a material effect on the Company’s consolidated financial statements. In June 2016, the FASB issued 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 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for fiscal years beginning after December 15, 2018, including interim periods within such years. The Company is evaluating the potential impact of the ASU on its consolidated financial statements and anticipates the ASU may have a material impact.

Basis of Presentation (Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Financial Derivative Instruments	Financial Derivative Instruments As part of its overall asset and liability management strategy, the Company periodically uses derivative instruments to minimize significant unplanned fluctuations in earnings and cash flows caused by interest rate volatility. The Company’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 Company recognizes its derivative instruments in the consolidated balance sheet at fair value. On the date the derivative instrument is entered into, the Company designates whether the derivative is part of a hedging relationship (i.e., cash flow or fair value hedge). The Company formally documents relationships between hedging instruments and hedged items, as well as its risk management objective and strategy for undertaking hedge transactions. The Company 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 Company 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. In 2016, interest rate swaps were contracted to limit the Company’s exposure to rising interest rates on short-term liabilities indexed to one-month London Inter-bank Offered Rates (LIBOR). The interest rate swaps were designated as cash flow hedges.
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 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.
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.
Impact of Recently Issued Accounting Standards	Impact of Recently Issued Accounting Standards In January 2016, the FASB issued Accounting Standards Update ("ASU") No. 2016-01, Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Financial Liabilities. The ASU was issued to enhance the reporting model for financial instruments to provide users of financial statements with more decision-useful information. This ASU changes how entities account for equity investments that do not result in consolidation and are not accounted for under the equity method of accounting. The ASU also changes certain disclosure requirements and other aspects of U.S. GAAP, including a requirement for public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. The ASU is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The ASU will not have a material effect on the Company's consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842). The ASU was issued to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. The ASU is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018. Management is reviewing the guidance in the ASU to determine whether it will have a material effect on the Company’s consolidated financial statements. In March 2016, the FASB issued ASU No. 2016-09, Improvements to Employee Share-Based Payment Accounting. This ASU includes provisions intended to simplify various aspects related to how share-based payments are accounted for and presented in the financial statements. Some of the key provisions of this new ASU include: (1) companies will no longer record excess tax benefits and certain tax deficiencies in additional paid-in capital (APIC). Instead, they will record all excess tax benefits and tax deficiencies as income tax expense or benefit in the income statement, and APIC pools will be eliminated. The guidance also eliminates the requirement that excess tax benefits be realized before companies can recognize them. In addition, the guidance requires companies to present excess tax benefits as an operating activity on the statement of cash flows rather than as a financing activity; (2) increase the amount an employer can withhold to cover income taxes on awards and still qualify for the exception to liability classification for shares used to satisfy the employer’s statutory income tax withholding obligation. The new guidance will also require an employer to classify the cash paid to a tax authority when shares are withheld to satisfy its statutory income tax withholding obligation as a financing activity on its statement of cash flows (current guidance did not specify how these cash flows should be classified); and (3) permit companies to make an accounting policy election for the impact of forfeitures on the recognition of expense for share-based payment awards. Forfeitures can be estimated on the date the award is granted, or recognized when they occur. ASU No. 2016-09 is effective for interim and annual reporting periods beginning after December 15, 2016. The adoption of the ASU did not have a material effect on the Company’s consolidated financial statements. In June 2016, the FASB issued 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 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for fiscal years beginning after December 15, 2018, including interim periods within such years. The Company is evaluating the potential impact of the ASU on its consolidated financial statements and anticipates the ASU may have a material impact.

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2017
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, 2017 : Amortized Cost Unrealized Gains Unrealized Losses Fair Value (Estimated) Securities available for sale Mortgage-backed securities $ 295,424,000 $ 1,407,000 $ (3,204,000 ) $ 293,627,000 State and political subdivisions 15,407,000 474,000 (176,000 ) 15,705,000 Other equity securities 3,229,000 67,000 (4,000 ) 3,292,000 $ 314,060,000 $ 1,948,000 $ (3,384,000 ) $ 312,624,000 Securities to be held to maturity U.S. Government-sponsored agencies $ 12,050,000 $ — $ (317,000 ) $ 11,733,000 Mortgage-backed securities 29,093,000 880,000 (135,000 ) 29,838,000 State and political subdivisions 195,386,000 2,079,000 (3,958,000 ) 193,507,000 Corporate securities 4,300,000 — — 4,300,000 $ 240,829,000 $ 2,959,000 $ (4,410,000 ) $ 239,378,000 Restricted equity securities Federal Home Loan Bank Stock $ 12,326,000 $ — $ — $ 12,326,000 Federal Reserve Bank Stock 1,037,000 — — 1,037,000 $ 13,363,000 $ — $ — $ 13,363,000 The following table summarizes the amortized cost and estimated fair value of investment securities at December 31, 2016 : Amortized Cost Unrealized Gains Unrealized Losses Fair Value (Estimated) Securities available for sale Mortgage-backed securities $ 282,397,000 $ 1,334,000 $ (3,127,000 ) $ 280,604,000 State and political subdivisions 16,183,000 475,000 (176,000 ) 16,482,000 Other equity securities 3,274,000 63,000 (7,000 ) 3,330,000 $ 301,854,000 $ 1,872,000 $ (3,310,000 ) $ 300,416,000 Securities to be held to maturity U.S. Government-sponsored agencies $ 11,943,000 $ 35,000 $ (233,000 ) $ 11,745,000 Mortgage-backed securities 31,201,000 967,000 (147,000 ) 32,021,000 State and political subdivisions 179,384,000 1,971,000 (3,884,000 ) 177,471,000 Corporate securities 4,300,000 — — 4,300,000 $ 226,828,000 $ 2,973,000 $ (4,264,000 ) $ 225,537,000 Restricted equity securities Federal Home Loan Bank Stock $ 10,893,000 $ — $ — $ 10,893,000 Federal Reserve Bank Stock 1,037,000 — — 1,037,000 $ 11,930,000 $ — $ — $ 11,930,000 The following table summarizes the amortized cost and estimated fair value of investment securities at March 31, 2016 : Amortized Cost Unrealized Gains Unrealized Losses Fair Value (Estimated) Securities available for sale Mortgage-backed securities $ 190,025,000 $ 3,837,000 $ (205,000 ) $ 193,657,000 State and political subdivisions 18,975,000 948,000 (19,000 ) 19,904,000 Other equity securities 3,148,000 39,000 (23,000 ) 3,164,000 $ 212,148,000 $ 4,824,000 $ (247,000 ) $ 216,725,000 Securities to be held to maturity U.S. Government-sponsored agencies $ 68,009,000 $ 37,000 $ (107,000 ) $ 67,939,000 Mortgage-backed securities 39,828,000 1,675,000 (35,000 ) 41,468,000 State and political subdivisions 124,474,000 5,156,000 — 129,630,000 Corporate securities 4,300,000 — — 4,300,000 $ 236,611,000 $ 6,868,000 $ (142,000 ) $ 243,337,000 Restricted equity securities Federal Home Loan Bank Stock $ 12,838,000 $ — $ — $ 12,838,000 Federal Reserve Bank Stock 1,037,000 — — 1,037,000 $ 13,875,000 $ — $ — $ 13,875,000
Contractual Maturities of Investment Securities	The following table summarizes the contractual maturities of investment securities at March 31, 2017 : 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 $ 43,000 $ 43,000 $ 903,000 $ 908,000 Due in 1 to 5 years 1,909,000 1,953,000 12,213,000 12,477,000 Due in 5 to 10 years 31,835,000 32,471,000 42,819,000 43,562,000 Due after 10 years 277,044,000 274,865,000 184,894,000 182,431,000 Equity securities 3,229,000 3,292,000 — — $ 314,060,000 $ 312,624,000 $ 240,829,000 $ 239,378,000 The following table summarizes the contractual maturities of investment securities at December 31, 2016 : 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 $ 253,000 $ 253,000 $ 906,000 $ 913,000 Due in 1 to 5 years 2,251,000 2,298,000 13,451,000 13,714,000 Due in 5 to 10 years 21,043,000 21,505,000 41,588,000 42,448,000 Due after 10 years 275,033,000 273,030,000 170,883,000 168,462,000 Equity securities 3,274,000 3,330,000 — — $ 301,854,000 $ 300,416,000 $ 226,828,000 $ 225,537,000 The following table summarizes the contractual maturities of investment securities at March 31, 2016 : 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 $ 2,599,000 $ 2,633,000 $ 1,825,000 $ 1,847,000 Due in 1 to 5 years 3,321,000 3,390,000 6,709,000 6,925,000 Due in 5 to 10 years 19,222,000 19,946,000 56,874,000 58,932,000 Due after 10 years 183,858,000 187,592,000 171,203,000 175,633,000 Equity securities 3,148,000 3,164,000 — — $ 212,148,000 $ 216,725,000 $ 236,611,000 $ 243,337,000
Schedule of Securities Gains and Losses	The following table shows securities gains and losses for the three months ended March 31, 2017 and 2016 : For the three months ended March 31, 2017 2016 Proceeds from sales of securities $ 3,000 $ 8,868,000 Gross realized gains 3,000 536,000 Gross realized losses — — Net gain $ 3,000 $ 536,000 Related income taxes $ 1,000 $ 188,000
Schedule of Temporary Impairment Losses	Information regarding securities temporarily impaired as of March 31, 2017 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 $ 10,824,000 $ (317,000 ) $ — $ — $ 10,824,000 $ (317,000 ) Mortgage-backed securities 198,068,000 (3,193,000 ) 2,432,000 (146,000 ) 200,500,000 (3,339,000 ) State and political subdivisions 78,516,000 (4,134,000 ) — — 78,516,000 (4,134,000 ) Other equity securities — — 62,000 (4,000 ) 62,000 (4,000 ) $ 287,408,000 $ (7,644,000 ) $ 2,494,000 $ (150,000 ) $ 289,902,000 $ (7,794,000 ) As of December 31, 2016 , there were 299 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 15 had been temporarily impaired for 12 months or more. Information regarding securities temporarily impaired as of December 31, 2016 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 $ 6,642,000 $ (233,000 ) $ — $ — $ 6,642,000 $ (233,000 ) Mortgage-backed securities 197,528,000 (3,090,000 ) 2,905,000 (184,000 ) 200,433,000 (3,274,000 ) State and political subdivisions 72,348,000 (4,060,000 ) — — 72,348,000 (4,060,000 ) Other equity securities — — 128,000 (7,000 ) 128,000 (7,000 ) $ 276,518,000 $ (7,383,000 ) $ 3,033,000 $ (191,000 ) $ 279,551,000 $ (7,574,000 ) As of March 31, 2016 , there were 34 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 12 had been temporarily impaired for 12 months or more. Information regarding securities temporarily impaired as of March 31, 2016 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 $ — $ — $ 4,893,000 $ (107,000 ) $ 4,893,000 $ (107,000 ) Mortgage-backed securities 17,125,000 (170,000 ) 1,866,000 (70,000 ) 18,991,000 (240,000 ) State and political subdivisions 522,000 — 1,417,000 (19,000 ) 1,939,000 (19,000 ) Other equity securities 235,000 (6,000 ) 106,000 (17,000 ) 341,000 (23,000 ) $ 17,882,000 $ (176,000 ) $ 8,282,000 $ (213,000 ) $ 26,164,000 $ (389,000 )

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2017
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, 2017 and 2016 and at December 31, 2016 : March 31, 2017 December 31, 2016 March 31, 2016 Commercial Real estate $ 304,663,000 28.0 % $ 302,506,000 28.2 % $ 279,683,000 27.8 % Construction 28,775,000 2.6 % 25,406,000 2.4 % 20,138,000 2.0 % Other 158,507,000 14.4 % 150,769,000 14.1 % 133,629,000 13.3 % Municipal 28,327,000 2.6 % 27,056,000 2.5 % 19,042,000 1.9 % Residential Term 421,202,000 38.7 % 411,469,000 38.4 % 405,495,000 40.3 % Construction 13,717,000 1.3 % 18,303,000 1.7 % 11,754,000 1.2 % Home equity line of credit 110,016,000 10.1 % 110,907,000 10.4 % 110,249,000 11.0 % Consumer 24,528,000 2.3 % 25,110,000 2.3 % 24,952,000 2.5 % Total $ 1,089,735,000 100.0 % $ 1,071,526,000 100.0 % $ 1,004,942,000 100.0 %
Past Due Loans Aging	Information on the past-due status of loans by class of financing receivable as of March 31, 2017 , 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 $ 142,000 $ 772,000 $ 1,823,000 $ 2,737,000 $ 301,926,000 $ 304,663,000 $ — Construction 20,000 — — 20,000 28,755,000 28,775,000 — Other 199,000 154,000 439,000 792,000 157,715,000 158,507,000 — Municipal — — — — 28,327,000 28,327,000 — Residential Term 3,555,000 — 1,603,000 5,158,000 416,044,000 421,202,000 — Construction — — — — 13,717,000 13,717,000 — Home equity line of credit 392,000 167,000 773,000 1,332,000 108,684,000 110,016,000 — Consumer 328,000 34,000 11,000 373,000 24,155,000 24,528,000 11,000 Total $ 4,636,000 $ 1,127,000 $ 4,649,000 $ 10,412,000 $ 1,079,323,000 $ 1,089,735,000 $ 11,000 Information on the past-due status of loans by class of financing receivable as of December 31, 2016 , 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 $ 1,039,000 $ 22,000 $ 2,415,000 $ 3,476,000 $ 299,030,000 $ 302,506,000 $ 753,000 Construction — — — — 25,406,000 25,406,000 — Other 202,000 33,000 796,000 1,031,000 149,738,000 150,769,000 20,000 Municipal — — — — 27,056,000 27,056,000 — Residential Term 631,000 3,970,000 1,802,000 6,403,000 405,066,000 411,469,000 — Construction — — — — 18,303,000 18,303,000 — Home equity line of credit 704,000 157,000 703,000 1,564,000 109,343,000 110,907,000 — Consumer 135,000 45,000 4,000 184,000 24,926,000 25,110,000 4,000 Total $ 2,711,000 $ 4,227,000 $ 5,720,000 $ 12,658,000 $ 1,058,868,000 $ 1,071,526,000 $ 777,000 Information on the past-due status of loans by class of financing receivable as of March 31, 2016 , 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 $ 428,000 $ 376,000 $ 451,000 $ 1,255,000 $ 278,428,000 $ 279,683,000 $ — Construction — — 150,000 150,000 19,988,000 20,138,000 — Other 323,000 110,000 — 433,000 133,196,000 133,629,000 — Municipal — — — — 19,042,000 19,042,000 — Residential Term 2,321,000 62,000 2,400,000 4,783,000 400,712,000 405,495,000 411,000 Construction — — — — 11,754,000 11,754,000 — Home equity line of credit 718,000 122,000 543,000 1,383,000 108,866,000 110,249,000 — Consumer 176,000 26,000 41,000 243,000 24,709,000 24,952,000 41,000 Total $ 3,966,000 $ 696,000 $ 3,585,000 $ 8,247,000 $ 996,695,000 $ 1,004,942,000 $ 452,000
Nonaccrual Loans	Information on nonaccrual loans as of March 31, 2017 and 2016 and at December 31, 2016 is presented in the following table: March 31, 2017 December 31, 2016 March 31, 2016 Commercial Real estate $ 2,625,000 $ 1,907,000 $ 920,000 Construction — — 180,000 Other 938,000 964,000 69,000 Municipal — — — Residential Term 4,028,000 4,060,000 4,677,000 Construction — — — Home equity line of credit 909,000 843,000 841,000 Consumer — — — Total $ 8,500,000 $ 7,774,000 $ 6,687,000
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, 2017 is presented in the following table: For the three months ended March 31, 2017 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Recognized Interest Income With No Related Allowance Commercial Real estate $ 5,949,000 $ 6,450,000 $ — $ 5,444,000 $ 51,000 Construction — — — — — Other 1,476,000 1,636,000 — 1,595,000 22,000 Municipal — — — — — Residential Term 11,388,000 12,470,000 — 11,402,000 129,000 Construction — — — — — Home equity line of credit 1,422,000 1,752,000 — 1,376,000 9,000 Consumer — — — — — $ 20,235,000 $ 22,308,000 $ — $ 19,817,000 $ 211,000 With an Allowance Recorded Commercial Real estate $ 4,722,000 $ 4,908,000 $ 351,000 $ 4,741,000 $ 46,000 Construction 763,000 763,000 101,000 763,000 9,000 Other 234,000 272,000 39,000 125,000 4,000 Municipal — — — — — Residential Term 1,872,000 2,020,000 251,000 2,077,000 23,000 Construction — — — — — Home equity line of credit 26,000 27,000 26,000 26,000 — Consumer — — — — — $ 7,617,000 $ 7,990,000 $ 768,000 $ 7,732,000 $ 82,000 Total Commercial Real estate $ 10,671,000 $ 11,358,000 $ 351,000 $ 10,185,000 $ 97,000 Construction 763,000 763,000 101,000 763,000 9,000 Other 1,710,000 1,908,000 39,000 1,720,000 26,000 Municipal — — — — — Residential Term 13,260,000 14,490,000 251,000 13,479,000 152,000 Construction — — — — — Home equity line of credit 1,448,000 1,779,000 26,000 1,402,000 9,000 Consumer — — — — — $ 27,852,000 $ 30,298,000 $ 768,000 $ 27,549,000 $ 293,000 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, 2016 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 $ 5,201,000 $ 5,614,000 $ — $ 6,252,000 $ 220,000 Construction — — — 32,000 — Other 1,671,000 1,852,000 — 1,074,000 86,000 Municipal — — — — — Residential Term 11,483,000 12,654,000 — 11,025,000 442,000 Construction — — — — — Home equity line of credit 1,361,000 1,733,000 — 1,213,000 33,000 Consumer — — — 9,000 — $ 19,716,000 $ 21,853,000 $ — $ 19,605,000 $ 781,000 With an Allowance Recorded Commercial Real estate $ 4,820,000 $ 4,925,000 $ 505,000 $ 4,153,000 $ 186,000 Construction 763,000 763,000 100,000 816,000 36,000 Other 72,000 72,000 39,000 317,000 — Municipal — — — — — Residential Term 2,186,000 2,328,000 304,000 3,209,000 101,000 Construction — — — — — Home equity line of credit 26,000 28,000 26,000 69,000 — Consumer — — — 48,000 — $ 7,867,000 $ 8,116,000 $ 974,000 $ 8,612,000 $ 323,000 Total Commercial Real estate $ 10,021,000 $ 10,539,000 $ 505,000 $ 10,405,000 $ 406,000 Construction 763,000 763,000 100,000 848,000 36,000 Other 1,743,000 1,924,000 39,000 1,391,000 86,000 Municipal — — — — — Residential Term 13,669,000 14,982,000 304,000 14,234,000 543,000 Construction — — — — — Home equity line of credit 1,387,000 1,761,000 26,000 1,282,000 33,000 Consumer — — — 57,000 — $ 27,583,000 $ 29,969,000 $ 974,000 $ 28,217,000 $ 1,104,000 A breakdown of impaired loans by class of financing receivable as of and for the period ended March 31, 2016 is presented in the following table: For the three months ended March 31, 2016 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Recognized Interest Income With No Related Allowance Commercial Real estate $ 7,381,000 $ 7,712,000 $ — $ 7,221,000 $ 79,000 Construction 179,000 238,000 — 80,000 1,000 Other 1,097,000 1,137,000 — 1,121,000 8,000 Municipal — — — — — Residential Term 10,543,000 11,541,000 — 10,715,000 91,000 Construction — — — — — Home equity line of credit 1,344,000 2,023,000 — 1,353,000 8,000 Consumer — — — — — $ 20,544,000 $ 22,651,000 $ — $ 20,490,000 $ 187,000 With an Allowance Recorded Commercial Real estate $ 3,129,000 $ 3,213,000 $ 69,000 $ 3,399,000 $ 36,000 Construction 788,000 788,000 96,000 926,000 8,000 Other 88,000 96,000 21,000 80,000 — Municipal — — — — — Residential Term 3,997,000 4,265,000 384,000 3,995,000 43,000 Construction — — — — — Home equity line of credit 64,000 65,000 29,000 83,000 1,000 Consumer — — — — — $ 8,066,000 $ 8,427,000 $ 599,000 $ 8,483,000 $ 88,000 Total Commercial Real estate $ 10,510,000 $ 10,925,000 $ 69,000 $ 10,620,000 $ 115,000 Construction 967,000 1,026,000 96,000 1,006,000 9,000 Other 1,185,000 1,233,000 21,000 1,201,000 8,000 Municipal — — — — — Residential Term 14,540,000 15,806,000 384,000 14,710,000 134,000 Construction — — — — — Home equity line of credit 1,408,000 2,088,000 29,000 1,436,000 9,000 Consumer — — — — — $ 28,610,000 $ 31,078,000 $ 599,000 $ 28,973,000 $ 275,000
Troubled Debt Restructurings on Financing Receivables	The following table shows these TDRs by class and the associated specific reserves included in the allowance for loan losses as of March 31, 2016 : Number of Loans Balance Specific Reserves Commercial Real estate 1 $ 155,000 $ — Construction — — — Other — — — Municipal — — — Residential Term 5 735,000 46,000 Construction — — — Home equity line of credit — — — Consumer — — — 6 $ 890,000 $ 46,000 The following table shows TDRs by class and the specific reserve as of March 31, 2017 : Number of Loans Balance Specific Reserves Commercial Real estate 10 $ 8,703,000 $ 82,000 Construction 1 763,000 101,000 Other 5 772,000 2,000 Municipal — — — Residential Term 51 10,344,000 201,000 Construction — — — Home equity line of credit 3 539,000 — Consumer — — — 70 $ 21,121,000 $ 386,000 The following table shows TDRs by class and the specific reserve as of December 31, 2016 : Number of Loans Balance Specific Reserves Commercial Real estate 10 $ 8,937,000 $ 375,000 Construction 1 763,000 100,000 Other 5 779,000 — Municipal — — — Residential Term 52 10,503,000 261,000 Construction — — — Home equity line of credit 3 544,000 — Consumer — — — 71 $ 21,526,000 $ 736,000 The following table shows TDRs by class and the specific reserve as of March 31, 2016 : Number of Loans Balance Specific Reserves Commercial Real estate 14 $ 10,133,000 $ 65,000 Construction 1 788,000 96,000 Other 10 1,116,000 — Municipal — — — Residential Term 53 10,856,000 275,000 Construction — — — Home equity line of credit 4 735,000 — Consumer — — — 82 $ 23,628,000 $ 436,000 The following table shows these TDRs by class and the associated specific reserves included in the allowance for loan losses as of March 31, 2017 : Number of Loans Balance Specific Reserves Commercial Real estate 1 $ 658,000 $ — Construction — — — Other — — — Municipal — — — Residential Term 7 826,000 — Construction — — — Home equity line of credit 1 167,000 — Consumer — — — 9 $ 1,651,000 $ —

Allowance for Loan Losses (Tabl

Allowance for Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2017
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, 2017 , December 31, 2016 , and March 31, 2016 , by class of financing receivable and allowance element, is presented in the following tables: As of March 31, 2017 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 $ 351,000 $ 1,631,000 $ 2,033,000 $ — $ 4,015,000 Construction 101,000 151,000 189,000 — 441,000 Other 39,000 840,000 1,046,000 — 1,925,000 Municipal — — 18,000 — 18,000 Residential Term 251,000 282,000 436,000 — 969,000 Construction — 9,000 15,000 — 24,000 Home equity line of credit 26,000 439,000 346,000 — 811,000 Consumer — 337,000 236,000 — 573,000 Unallocated — — — 1,591,000 1,591,000 $ 768,000 $ 3,689,000 $ 4,319,000 $ 1,591,000 $ 10,367,000 As of December 31, 2016 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 $ 505,000 $ 1,471,000 $ 2,012,000 $ — $ 3,988,000 Construction 100,000 125,000 171,000 — 396,000 Other 39,000 735,000 1,006,000 — 1,780,000 Municipal — — 18,000 — 18,000 Residential Term 304,000 563,000 421,000 — 1,288,000 Construction — 25,000 19,000 — 44,000 Home equity line of credit 26,000 444,000 337,000 — 807,000 Consumer — 328,000 231,000 — 559,000 Unallocated — — — 1,258,000 1,258,000 $ 974,000 $ 3,691,000 $ 4,215,000 $ 1,258,000 $ 10,138,000 As of March 31, 2016 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 $ 69,000 $ 1,236,000 $ 2,219,000 $ — $ 3,524,000 Construction 96,000 89,000 160,000 — 345,000 Other 21,000 592,000 1,063,000 — 1,676,000 Municipal — — 17,000 — 17,000 Residential Term 384,000 630,000 460,000 — 1,474,000 Construction — 19,000 14,000 — 33,000 Home equity line of credit 29,000 502,000 374,000 — 905,000 Consumer — 413,000 241,000 — 654,000 Unallocated — — — 1,591,000 1,591,000 $ 599,000 $ 3,481,000 $ 4,548,000 $ 1,591,000 $ 10,219,000
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, 2017 : Commercial Real Estate Commercial Construction Commercial Other Municipal Loans All Risk- Rated Loans 1 Strong $ 2,000 $ — $ 499,000 $ — $ 501,000 2 Above Average 14,213,000 45,000 8,222,000 27,479,000 49,959,000 3 Satisfactory 83,021,000 2,051,000 47,724,000 848,000 133,644,000 4 Average 138,865,000 18,283,000 72,791,000 — 229,939,000 5 Watch 45,053,000 8,239,000 14,280,000 — 67,572,000 6 OAEM 4,036,000 — 5,661,000 — 9,697,000 7 Substandard 19,473,000 157,000 9,330,000 — 28,960,000 8 Doubtful — — — — — Total $ 304,663,000 $ 28,775,000 $ 158,507,000 $ 28,327,000 $ 520,272,000 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, 2016 : Commercial Real Estate Commercial Construction Commercial Other Municipal Loans All Risk- Rated Loans 1 Strong $ 2,000 $ — $ 850,000 $ — $ 852,000 2 Above Average 13,981,000 49,000 8,934,000 25,527,000 48,491,000 3 Satisfactory 81,286,000 1,345,000 48,212,000 1,529,000 132,372,000 4 Average 139,421,000 16,506,000 65,146,000 — 221,073,000 5 Watch 43,181,000 7,349,000 16,864,000 — 67,394,000 6 OAEM 4,569,000 — 1,587,000 — 6,156,000 7 Substandard 20,066,000 157,000 9,176,000 — 29,399,000 8 Doubtful — — — — — Total $ 302,506,000 $ 25,406,000 $ 150,769,000 $ 27,056,000 $ 505,737,000 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, 2016 : Commercial Real Estate Commercial Construction Commercial Other Municipal Loans All Risk- Rated Loans 1 Strong $ 6,000 $ — $ 990,000 $ — $ 996,000 2 Above Average 27,586,000 55,000 7,707,000 17,331,000 52,679,000 3 Satisfactory 59,080,000 2,898,000 31,629,000 1,711,000 95,318,000 4 Average 129,432,000 11,926,000 67,550,000 — 208,908,000 5 Watch 34,025,000 5,109,000 20,345,000 — 59,479,000 6 OAEM 9,821,000 — 2,490,000 — 12,311,000 7 Substandard 19,733,000 150,000 2,918,000 — 22,801,000 8 Doubtful — — — — — Total $ 279,683,000 $ 20,138,000 $ 133,629,000 $ 19,042,000 $ 452,492,000
Allowance for Loan Losses Transactions	The following table presents allowance for loan losses activity by class for the three months ended March 31, 2017 , and allowance for loan loss balances by class and related loan balances by class as of March 31, 2017 : Commercial Municipal Residential Home Equity Line of Credit Consumer Unallocated Total Real Estate Construction Other Term Construction For the three months ended March 31, 2017 Beginning balance $ 3,988,000 $ 396,000 $ 1,780,000 $ 18,000 $ 1,288,000 $ 44,000 $ 807,000 $ 559,000 $ 1,258,000 $ 10,138,000 Charge offs 164,000 — — — 53,000 — 7,000 103,000 — 327,000 Recoveries — — 11,000 — 14,000 — — 31,000 — 56,000 Provision (credit) 191,000 45,000 134,000 — (280,000 ) (20,000 ) 11,000 86,000 333,000 500,000 Ending balance $ 4,015,000 $ 441,000 $ 1,925,000 $ 18,000 $ 969,000 $ 24,000 $ 811,000 $ 573,000 $ 1,591,000 $ 10,367,000 Allowance for loan losses as of March 31, 2017 Ending balance specifically evaluated for impairment $ 351,000 $ 101,000 $ 39,000 $ — $ 251,000 $ — $ 26,000 $ — $ — $ 768,000 Ending balance collectively evaluated for impairment $ 3,664,000 $ 340,000 $ 1,886,000 $ 18,000 $ 718,000 $ 24,000 $ 785,000 $ 573,000 $ 1,591,000 $ 9,599,000 Related loan balances as of March 31, 2017 Ending balance $ 304,663,000 $ 28,775,000 $ 158,507,000 $ 28,327,000 $ 421,202,000 $ 13,717,000 $ 110,016,000 $ 24,528,000 $ — $ 1,089,735,000 Ending balance specifically evaluated for impairment $ 10,671,000 $ 763,000 $ 1,710,000 $ — $ 13,260,000 $ — $ 1,448,000 $ — $ — $ 27,852,000 Ending balance collectively evaluated for impairment $ 293,992,000 $ 28,012,000 $ 156,797,000 $ 28,327,000 $ 407,942,000 $ 13,717,000 $ 108,568,000 $ 24,528,000 $ — $ 1,061,883,000 The following table presents allowance for loan losses activity by class for the year-ended December 31, 2016 and allowance for loan loss balances by class and related loan balances by class as of December 31, 2016 : Municipal Residential Home Equity Line of Credit Consumer Unallocated Total Real Estate Construction Other Term Construction Beginning balance $ 3,120,000 $ 580,000 $ 1,452,000 $ 17,000 $ 1,391,000 $ 24,000 $ 893,000 $ 566,000 $ 1,873,000 $ 9,916,000 Charge offs 294,000 75,000 376,000 — 379,000 — 147,000 450,000 — 1,721,000 Recoveries — 8,000 129,000 — 93,000 — 5,000 108,000 — 343,000 Provision (credit) 1,162,000 (117,000 ) 575,000 1,000 183,000 20,000 56,000 335,000 (615,000 ) 1,600,000 Ending balance $ 3,988,000 $ 396,000 $ 1,780,000 $ 18,000 $ 1,288,000 $ 44,000 $ 807,000 $ 559,000 $ 1,258,000 $ 10,138,000 Ending balance specifically evaluated for impairment $ 505,000 $ 100,000 $ 39,000 $ — $ 304,000 $ — $ 26,000 $ — $ — $ 974,000 Ending balance collectively evaluated for impairment $ 3,483,000 $ 296,000 $ 1,741,000 $ 18,000 $ 984,000 $ 44,000 $ 781,000 $ 559,000 $ 1,258,000 $ 9,164,000 Ending balance $ 302,506,000 $ 25,406,000 $ 150,769,000 $ 27,056,000 $ 411,469,000 $ 18,303,000 $ 110,907,000 $ 25,110,000 $ — $ 1,071,526,000 Ending balance specifically evaluated for impairment $ 10,021,000 $ 763,000 $ 1,743,000 $ — $ 13,669,000 $ — $ 1,387,000 $ — $ — $ 27,583,000 Ending balance collectively evaluated for impairment $ 292,485,000 $ 24,643,000 $ 149,026,000 $ 27,056,000 $ 397,800,000 $ 18,303,000 $ 109,520,000 $ 25,110,000 $ — $ 1,043,943,000 The following table presents allowance for loan losses activity by class for the three months ended March 31, 2016 , and allowance for loan loss balances by class and related loan balances by class as of March 31, 2016 : Commercial Municipal Residential Home Equity Line of Credit Consumer Unallocated Total Real Estate Construction Other Term Construction For the three months ended March 31, 2016 Beginning balance $ 3,120,000 $ 580,000 $ 1,452,000 $ 17,000 $ 1,391,000 $ 24,000 $ 893,000 $ 566,000 $ 1,873,000 $ 9,916,000 Charge offs — 58,000 — — 20,000 — 49,000 63,000 — 190,000 Recoveries — — 20,000 — 65,000 — 1,000 32,000 — 118,000 Provision (credit) 404,000 (177,000 ) 204,000 — 38,000 9,000 60,000 119,000 (282,000 ) 375,000 Ending balance $ 3,524,000 $ 345,000 $ 1,676,000 $ 17,000 $ 1,474,000 $ 33,000 $ 905,000 $ 654,000 $ 1,591,000 $ 10,219,000 Allowance for loan losses as of March 31, 2016 Ending balance specifically evaluated for impairment $ 69,000 $ 96,000 $ 21,000 $ — $ 384,000 $ — $ 29,000 $ — $ — $ 599,000 Ending balance collectively evaluated for impairment $ 3,455,000 $ 249,000 $ 1,655,000 $ 17,000 $ 1,090,000 $ 33,000 $ 876,000 $ 654,000 $ 1,591,000 $ 9,620,000 Related loan balances as of March 31, 2016 Ending balance $ 279,683,000 $ 20,138,000 $ 133,629,000 $ 19,042,000 $ 405,495,000 $ 11,754,000 $ 110,249,000 $ 24,952,000 $ — $ 1,004,942,000 Ending balance specifically evaluated for impairment $ 10,510,000 $ 967,000 $ 1,185,000 $ — $ 14,540,000 $ — $ 1,408,000 $ — $ — $ 28,610,000 Ending balance collectively evaluated for impairment $ 269,173,000 $ 19,171,000 $ 132,444,000 $ 19,042,000 $ 390,955,000 $ 11,754,000 $ 108,841,000 $ 24,952,000 $ — $ 976,332,000

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Nonvested Restricted Stock Units Activity	As of March 31, 2017 , 127,560 shares of restricted stock had been granted under the 2010 Plan, of which 71,086 shares remain restricted as of March 31, 2017 as detailed in the following table: Year Granted Vesting Term (In Years) Shares Remaining Term (In Years) 2013 5.0 14,776 0.6 2014 5.0 10,422 1.6 2015 5.0 12,023 2.6 2016 5.0 15,015 3.6 2017 1.0 3,976 0.9 2017 3.0 4,902 2.9 2017 5.0 9,972 4.9 71,086 2.5

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2017
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, 2017 and 2016 : Income (Numerator) Shares (Denominator) Per-Share Amount For the three months ended March 31, 2017 Net income as reported $ 4,637,000 Basic EPS: Income available to common shareholders 4,637,000 10,734,281 $ 0.43 Effect of dilutive securities: restricted stock 73,623 Diluted EPS: Income available to common shareholders plus assumed conversions $ 4,637,000 10,807,904 $ 0.43 For the three months ended March 31, 2016 Net income as reported $ 4,503,000 Basic EPS: Income available to common shareholders 4,503,000 10,699,440 $ 0.42 Effect of dilutive securities: restricted stock and warrants 95,672 Diluted EPS: Income available to common shareholders plus assumed conversions $ 4,503,000 10,795,112 $ 0.42
Number of options and warrants outstanding and amount above or below the strike price	The following table presents the number of warrants outstanding as of March 31, 2016 and the amount for which the average market price at period end is above or below the strike price: Outstanding In-the-Money Out-of-the-Money For the three months ended March 31, 2016 Warrants issued to private parties 226,819 226,819 — Total 226,819 226,819 —

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 2017
General Discussion of Pension and Other Postretirement Benefits [Abstract]
Accumulated post-retirement benefit obligation, funded status, net periodic benefit cost and assumptions used	The following table sets forth the accumulated postretirement benefit obligation and funded status: At or for the three months ended March 31, 2017 2016 Change in benefit obligation Benefit obligation at beginning of year $ 1,870,000 $ 1,967,000 Interest cost 19,000 21,000 Benefits paid (32,000 ) (30,000 ) Benefit obligation at end of period $ 1,857,000 $ 1,958,000 Funded status Benefit obligation at end of period $ (1,857,000 ) $ (1,958,000 ) Unamortized loss 102,000 240,000 Accrued benefit cost at end of period $ (1,755,000 ) $ (1,718,000 )
Schedule of net benefit costs	The following table sets forth the net periodic pension cost: For the three months ended March 31, 2017 2016 Components of net periodic benefit cost Interest cost $ 19,000 $ 21,000 Net periodic benefit cost $ 19,000 $ 21,000
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 (loss) are as follows: March 31, December 31, 2016 March 31, Unamortized net actuarial loss $ (156,000 ) $ (156,000 ) $ (240,000 ) Deferred tax benefit at 35% 54,000 54,000 84,000 Net unrecognized postretirement benefits included in accumulated other comprehensive income (loss) $ (102,000 ) $ (102,000 ) $ (156,000 )

Other Comprehensive Income (L32

Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2017
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, 2017 and 2016 . For the three months ended March 31, 2017 2016 Balance at beginning of period $ (935,000 ) $ 1,123,000 Unrealized gains arising during the period 5,000 3,385,000 Reclassification of realized gains during the period (3,000 ) (536,000 ) Related deferred taxes (1,000 ) (997,000 ) Net change 1,000 1,852,000 Balance at end of period $ (934,000 ) $ 2,975,000 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, 2017 and 2016 . For the three months ended March 31, 2017 2016 Unrecognized postretirement benefits at beginning of period $ (102,000 ) $ (156,000 ) Amortization of unrecognized transition obligation — — Change in unamortized net actuarial gain (loss) — — Related deferred taxes — — Unrecognized postretirement benefits at end of period $ (102,000 ) $ (156,000 ) 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, 2017 and 2016 . For the three months ended March 31, 2017 2016 Balance at beginning of period $ (129,000 ) $ (112,000 ) Amortization of net unrealized losses (6,000 ) (17,000 ) Related deferred taxes 2,000 6,000 Net change (4,000 ) (11,000 ) Balance at end of period $ (133,000 ) $ (123,000 ) 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, 2017 and 2016 . For the three months ended March 31, 2017 2016 Balance at beginning of period $ 1,163,000 $ — Unrealized gains on cash flow hedging derivatives arising during the period 96,000 — Related deferred taxes (33,000 ) — Net change 63,000 — Balance at end of period $ 1,226,000 $ —

Financial Derivative Instrume33

Financial Derivative Instruments (Tables)	3 Months Ended
	Mar. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	The details of the interest rate swap agreements are as follows: As of March 31 2017 2016 Notional Amount Effective Date Maturity Date Variable Index Received Fixed Rate Paid Fair Value (1) Fair Value (1) $ 30,000,000 June 28, 2016 June 28, 2021 1-Month USD LIBOR 0.940 % $ 1,108,000 $ — $ 20,000,000 June 27, 2016 June 27, 2021 1-Month USD LIBOR 0.893 % $ 778,000 — $ 50,000,000 $ 1,886,000 $ — (1) Presented within other assets in the consolidated balance sheet.

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	3 Months Ended
	Mar. 31, 2017
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 $ 4,491,000 $ 5,901,000 $ 5,747,000 Accumulated amortization (3,415,000 ) (4,680,000 ) (4,716,000 ) Impairment reserve (22,000 ) (108,000 ) (107,000 ) $ 1,054,000 $ 1,113,000 $ 924,000

Certificates of Deposit (Tables

Certificates of Deposit (Tables)	3 Months Ended
	Mar. 31, 2017
Banking and Thrift [Abstract]
Certificates of deposit	The following table represents the breakdown of certificates of deposit at March 31, 2017 and 2016 , and at December 31, 2016 : March 31, 2017 December 31, 2016 March 31, 2016 Certificates of deposit < $100,000 $ 246,792,000 $ 195,115,000 $ 197,006,000 Certificates $100,000 to $250,000 236,971,000 240,904,000 226,644,000 Certificates $250,000 and over 43,286,000 40,601,000 49,062,000 $ 527,049,000 $ 476,620,000 $ 472,712,000

Fair Value (Tables)

Fair Value (Tables)	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Assets and liabilities measured on recurring basis measured at fair value	The following tables present the balances of assets and that were measured at fair value on a recurring basis as of March 31, 2017 , December 31, 2016 and March 31, 2016 . At March 31, 2017 Level 1 Level 2 Level 3 Total Securities available for sale Mortgage-backed securities $ — $ 293,627,000 $ — $ 293,627,000 State and political subdivisions — 15,705,000 — 15,705,000 Other equity securities — 3,292,000 — 3,292,000 Total securities available for sale — 312,624,000 — 312,624,000 Interest rate swap agreements — 1,886,000 — 1,886,000 Total assets $ — $ 314,510,000 $ — $ 314,510,000 At December 31, 2016 Level 1 Level 2 Level 3 Total Securities available for sale Mortgage-backed securities $ — $ 280,604,000 $ — $ 280,604,000 State and political subdivisions — 16,482,000 — 16,482,000 Other equity securities — 3,330,000 — 3,330,000 Total securities available for sale $ — $ 300,416,000 $ — $ 300,416,000 Interest rate swap agreements $ — $ 1,790,000 $ — $ 1,790,000 Total assets $ — $ 302,206,000 $ — $ 302,206,000 At March 31, 2016 Level 1 Level 2 Level 3 Total Securities available for sale Mortgage-backed securities $ — $ 193,657,000 $ — $ 193,657,000 State and political subdivisions — 19,904,000 — 19,904,000 Other equity securities — 3,164,000 — 3,164,000 Total assets $ — $ 216,725,000 $ — $ 216,725,000
Assets and liabilities measured on non-recurring 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 $78,000 , $205,000 and $130,000 at March 31, 2017 , December 31, 2016 , and March 31, 2016 , respectively. 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 $356,000 , $478,000 and $158,000 at March 31, 2017 , December 31, 2016 , and March 31, 2016 , respectively. At March 31, 2017 Level 1 Level 2 Level 3 Total Other real estate owned $ — $ 525,000 $ — $ 525,000 Impaired loans — 718,000 — 718,000 Total assets $ — $ 1,243,000 $ — $ 1,243,000 At December 31, 2016 Level 1 Level 2 Level 3 Total Other real estate owned $ — $ 375,000 $ — $ 375,000 Impaired loans — 827,000 — 827,000 Total assets $ — $ 1,202,000 $ — $ 1,202,000 At March 31, 2016 Level 1 Level 2 Level 3 Total Other real estate owned $ — $ 1,592,000 $ — $ 1,592,000 Impaired loans — 879,000 — 879,000 Total assets $ — $ 2,471,000 $ — $ 2,471,000
Estimated fair value of financial instruments	The carrying amount and estimated fair values for financial instruments as of March 31, 2016 were as follows: Carrying value Estimated fair value Level 1 Level 2 Level 3 Financial assets Cash and cash equivalents $ 14,533,000 $ 14,533,000 $ 14,533,000 $ — $ — Interest bearing deposits in other banks 6,372,000 6,372,000 6,372,000 — — Securities available for sale 216,725,000 216,725,000 — 216,725,000 — Securities to be held to maturity 236,611,000 243,337,000 — 243,337,000 — Restricted equity securities 13,875,000 13,875,000 — 13,875,000 — Loans held for sale 224,000 224,000 — 224,000 — Loans (net of allowance for loan losses) Commercial Real estate 275,510,000 272,302,000 — — 272,302,000 Construction 19,729,000 19,499,000 — — 19,499,000 Other 131,644,000 131,637,000 — — 131,637,000 Municipal 19,022,000 19,994,000 — — 19,994,000 Residential Term 403,749,000 410,670,000 — 17,000 410,653,000 Construction 11,715,000 11,648,000 — — 11,648,000 Home equity line of credit 109,177,000 108,274,000 — 862,000 107,412,000 Consumer 24,177,000 24,153,000 — — 24,153,000 Total loans 994,723,000 998,177,000 — 879,000 997,298,000 Mortgage servicing rights 924,000 1,543,000 — 1,543,000 — Accrued interest receivable 6,271,000 6,271,000 — 6,271,000 — Financial liabilities Demand deposits $ 116,756,000 $ 116,614,000 $ — $ 116,614,000 $ — NOW deposits 240,112,000 230,934,000 — 230,934,000 — Money market deposits 74,643,000 68,221,000 — 68,221,000 — Savings deposits 205,218,000 187,346,000 — 187,346,000 — Local certificates of deposit 207,664,000 209,455,000 — 209,455,000 — National certificates of deposit 265,048,000 265,335,000 — 265,335,000 — Total deposits 1,109,441,000 1,077,905,000 — 1,077,905,000 — Repurchase agreements 91,399,000 88,442,000 — 88,442,000 — Federal Home Loan Bank advances 185,132,000 186,398,000 — 186,398,000 — Total borrowed funds 276,531,000 274,840,000 — 274,840,000 — Accrued interest payable 495,000 495,000 — 495,000 — The carrying amount and estimated fair values for financial instruments as of March 31, 2017 were as follows: Carrying value Estimated fair value Level 1 Level 2 Level 3 Financial assets Cash and cash equivalents $ 17,600,000 $ 17,600,000 $ 17,600,000 $ — $ — Interest bearing deposits in other banks 3,272,000 3,272,000 3,272,000 — — Securities available for sale 312,624,000 312,624,000 — 312,624,000 — Securities to be held to maturity 240,829,000 239,378,000 — 239,378,000 — Restricted equity securities 13,363,000 13,363,000 — 13,363,000 — Loans held for sale 979,000 979,000 — 979,000 — Loans (net of allowance for loan losses) Commercial Real estate 299,920,000 295,039,000 — 424,000 294,615,000 Construction 28,254,000 27,794,000 — — 27,794,000 Other 156,233,000 154,823,000 — 33,000 154,790,000 Municipal 28,306,000 28,737,000 — — 28,737,000 Residential Term 420,057,000 420,393,000 — 261,000 420,132,000 Construction 13,689,000 13,593,000 — — 13,593,000 Home equity line of credit 109,058,000 107,823,000 — — 107,823,000 Consumer 23,851,000 23,519,000 — — 23,519,000 Total loans 1,079,368,000 1,071,721,000 — 718,000 1,071,003,000 Mortgage servicing rights 1,054,000 1,853,000 — 1,853,000 — Interest rate swap agreements 1,886,000 1,886,000 — 1,886,000 — Accrued interest receivable 6,854,000 6,854,000 — 6,854,000 — Financial liabilities Demand deposits $ 181,188,000 $ 171,979,000 $ — $ 171,979,000 $ — NOW deposits 273,050,000 250,323,000 — 250,323,000 — Money market deposits 142,220,000 130,374,000 — 130,374,000 — Savings deposits 222,976,000 193,142,000 — 193,142,000 — Local certificates of deposit 213,296,000 212,337,000 — 212,337,000 — National certificates of deposit 313,753,000 313,833,000 — 313,833,000 — Total deposits 1,346,483,000 1,271,988,000 — 1,271,988,000 — Repurchase agreements 76,342,000 72,399,000 — 72,399,000 — Federal Home Loan Bank advances 150,125,000 149,358,000 — 149,358,000 — Total borrowed funds 226,467,000 221,757,000 — 221,757,000 — Accrued interest payable 519,000 519,000 — 519,000 — The carrying amounts and estimated fair values for financial instruments as of December 31, 2016 were as follows: Carrying value Estimated fair value Level 1 Level 2 Level 3 Financial assets Cash and cash equivalents $ 17,366,000 $ 17,366,000 $ 17,366,000 $ — $ — Interest bearing deposits in other banks 293,000 293,000 293,000 — — Securities available for sale 300,416,000 300,416,000 — 300,416,000 — Securities to be held to maturity 226,828,000 225,537,000 — 225,537,000 — Restricted equity securities 11,930,000 11,930,000 — 11,930,000 — Loans held for sale 782,000 782,000 — 782,000 — Loans (net of allowance for loan losses) Commercial Real estate 297,952,000 293,103,000 — 558,000 292,545,000 Construction 24,954,000 24,548,000 — — 24,548,000 Other 148,737,000 147,394,000 — 33,000 147,361,000 Municipal 27,035,000 27,446,000 — — 27,446,000 Residential Term 409,999,000 410,327,000 — 236,000 410,091,000 Construction 18,253,000 18,125,000 — — 18,125,000 Home equity line of credit 109,986,000 108,740,000 — — 108,740,000 Consumer 24,472,000 24,131,000 — — 24,131,000 Total loans 1,061,388,000 1,053,814,000 — 827,000 1,052,987,000 Mortgage servicing rights 1,113,000 1,696,000 — 1,696,000 — Interest rate swap agreements 1,790,000 1,790,000 — 1,790,000 — Accrued interest receivable 5,532,000 5,532,000 — 5,532,000 — Financial liabilities Demand deposits $ 140,482,000 $ 133,342,000 $ — $ 133,342,000 $ — NOW deposits 282,971,000 259,418,000 — 259,418,000 — Money market deposits 125,544,000 115,087,000 — 115,087,000 — Savings deposits 217,340,000 188,260,000 — 188,260,000 — Local certificates of deposit 210,316,000 209,370,000 — 209,370,000 — National certificates of deposit 266,304,000 266,372,000 — 266,372,000 — Total deposits 1,242,957,000 1,171,849,000 — 1,171,849,000 — Repurchase agreements 84,174,000 79,827,000 — 79,827,000 — Federal Home Loan Bank advances 194,727,000 193,733,000 — 193,733,000 — Total borrowed funds 278,901,000 273,560,000 — 273,560,000 — Accrued interest payable 479,000 479,000 — 479,000 —

Investment Securities Amortized

Investment Securities Amortized Cost and Estimated Fair Value of Available for Sale Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 314,060	$ 301,854	$ 212,148
Unrealized Gains	1,948	1,872	4,824
Unrealized Losses	(3,384)	(3,310)	(247)
Fair Value (Estimated)	312,624	300,416	216,725
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	295,424	282,397	190,025
Unrealized Gains	1,407	1,334	3,837
Unrealized Losses	(3,204)	(3,127)	(205)
Fair Value (Estimated)	293,627	280,604	193,657
State and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	15,407	16,183	18,975
Unrealized Gains	474	475	948
Unrealized Losses	(176)	(176)	(19)
Fair Value (Estimated)	15,705	16,482	19,904
Other equity securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,229	3,274	3,148
Unrealized Gains	67	63	39
Unrealized Losses	(4)	(7)	(23)
Fair Value (Estimated)	$ 3,292	$ 3,330	$ 3,164

Investment Securities Amortiz38

Investment Securities Amortized Cost and Estimated Fair Value of Held to Maturity Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 240,829	$ 226,828	$ 236,611
Unrealized Gains	2,959	2,973	6,868
Unrealized Losses	(4,410)	(4,264)	(142)
Fair Value (Estimated)	239,378	225,537	243,337
U.S. Government-sponsored agencies
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	12,050	11,943	68,009
Unrealized Gains	0	35	37
Unrealized Losses	(317)	(233)	(107)
Fair Value (Estimated)	11,733	11,745	67,939
Mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	29,093	31,201	39,828
Unrealized Gains	880	967	1,675
Unrealized Losses	(135)	(147)	(35)
Fair Value (Estimated)	29,838	32,021	41,468
State and political subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	195,386	179,384	124,474
Unrealized Gains	2,079	1,971	5,156
Unrealized Losses	(3,958)	(3,884)	0
Fair Value (Estimated)	193,507	177,471	129,630
Corporate securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	4,300	4,300	4,300
Unrealized Gains	0	0	0
Unrealized Losses	0	0	0
Fair Value (Estimated)	$ 4,300	$ 4,300	$ 4,300

Investment Securities Amortiz39

Investment Securities Amortized Cost and Estimated Fair Value of Restricted Equity Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Restricted Equity Securities [Line Items]
Amortized Cost	$ 13,363	$ 11,930	$ 13,875
Unrealized Gains	0	0	0
Unrealized Losses	0	0	0
Fair Value (Estimated)	13,363	11,930	13,875
Federal Home Loan Bank Stock
Restricted Equity Securities [Line Items]
Amortized Cost	12,326	10,893	12,838
Unrealized Gains	0	0	0
Unrealized Losses	0	0	0
Fair Value (Estimated)	12,326	10,893	12,838
Federal Reserve Bank Stock
Restricted Equity Securities [Line Items]
Amortized Cost	1,037	1,037	1,037
Unrealized Gains	0	0	0
Unrealized Losses	0	0	0
Fair Value (Estimated)	$ 1,037	$ 1,037	$ 1,037

Investment Securities Contractu

Investment Securities Contractual Maturities of Investment Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Due in 1 year or less, Securities available for sale, Amortized Cost	$ 43	$ 253	$ 2,599
Due in 1 to 5 years, Securities available for sale, Amortized Cost	1,909	2,251	3,321
Due in 5 to 10 years, Securities available for sale, Amortized Cost	31,835	21,043	19,222
Due after 10 years, Securities available for sale, Amortized Cost	277,044	275,033	183,858
Equity securities, Amortized Cost	3,229	3,274	3,148
Amortized Cost	314,060	301,854	212,148
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due in 1 year or less, Securities available for sale, Fair Value (Estimated)	43	253	2,633
Due in 1 to 5 years, Securities available for sale, Fair Value (Estimated)	1,953	2,298	3,390
Due in 5 to 10 years, Securities available for sale, Fair Value (Estimated)	32,471	21,505	19,946
Due after 10 years, Securities available for sale, Fair Value (Estimated)	274,865	273,030	187,592
Equity securities, Fair Value (Estimated)	3,292	3,330	3,164
Fair Value (Estimated)	312,624	300,416	216,725
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract]
Due in 1 year or less, Securities available to be held to maturity, Amortized Cost	903	906	1,825
Due in 1 to 5 years, Securities to be held to maturity, Amortized Cost	12,213	13,451	6,709
Due in 5 to 10 years, Securities to be held to maturity, Amortized Cost	42,819	41,588	56,874
Due after 10 years, Securities to be held to maturity, Amortized Cost	184,894	170,883	171,203
Securities to be held to maturity, Amortized Cost	240,829	226,828	236,611
Held-to-maturity Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due in 1 year or less, Securities available to be held to maturity, Fair Value (Estimated)	908	913	1,847
Due in 1 to 5 years, Securities to be held to maturity, Fair Value (Estimated)	12,477	13,714	6,925
Due in 5 to 10 years, Securities to be held to maturity, Fair Value (Estimated)	43,562	42,448	58,932
Due after 10 years, Securities to be held to maturity, Fair Value (Estimated)	182,431	168,462	175,633
Fair Value (Estimated)	$ 239,378	$ 225,537	$ 243,337

Investment Securities Additiona

Investment Securities Additional Information (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017USD ($)securitystate	Mar. 31, 2016USD ($)security	Dec. 31, 2016USD ($)security	Sep. 30, 2014USD ($)
Investments, Debt and Equity Securities [Abstract]
Fair value of securities pledged as collateral	$ 227,683	$ 202,296	$ 222,328
Number of securities temporarily impaired (security) | security	311	34	299
Number of securities temporarily impaired (security) | security	13	12	15
Length of time securities temporarily impaired (months)	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	$ 133	$ 123	$ 129
Number of states in New England where FHLB serve (state) | state	6
Federal Home Loan Bank Stock	$ 12,326	$ 12,838	$ 10,893

Investment Securities Gains and

Investment Securities Gains and Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales of securities	$ 3	$ 8,868
Gross realized gains	3	536
Gross realized losses	0	0
Net gain	3	536
Related income taxes	$ 1	$ 188

Investment Securities Temporari

Investment Securities Temporarily Impaired Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Fair Value (Estimated) (Less than 12 months)	$ 287,408	$ 276,518	$ 17,882
Unrealized Loss (Less than 12 months)	(7,644)	(7,383)	(176)
Fair Value (Estimated) (12 months or more)	2,494	3,033	8,282
Unrealized Loss (12 months or more)	(150)	(191)	(213)
Fair Value (Estimated)	289,902	279,551	26,164
Unrealized Losses	(7,794)	(7,574)	(389)
U.S. Government-sponsored agencies
Schedule of Available-for-sale Securities [Line Items]
Fair Value (Estimated) (Less than 12 months)	10,824	6,642	0
Unrealized Loss (Less than 12 months)	(317)	(233)	0
Fair Value (Estimated) (12 months or more)	0	0	4,893
Unrealized Loss (12 months or more)	0	0	(107)
Fair Value (Estimated)	10,824	6,642	4,893
Unrealized Losses	(317)	(233)	(107)
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Fair Value (Estimated) (Less than 12 months)	198,068	197,528	17,125
Unrealized Loss (Less than 12 months)	(3,193)	(3,090)	(170)
Fair Value (Estimated) (12 months or more)	2,432	2,905	1,866
Unrealized Loss (12 months or more)	(146)	(184)	(70)
Fair Value (Estimated)	200,500	200,433	18,991
Unrealized Losses	(3,339)	(3,274)	(240)
State and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Fair Value (Estimated) (Less than 12 months)	78,516	72,348	522
Unrealized Loss (Less than 12 months)	(4,134)	(4,060)	0
Fair Value (Estimated) (12 months or more)	0	0	1,417
Unrealized Loss (12 months or more)	0	0	(19)
Fair Value (Estimated)	78,516	72,348	1,939
Unrealized Losses	(4,134)	(4,060)	(19)
Other equity securities
Schedule of Available-for-sale Securities [Line Items]
Fair Value (Estimated) (Less than 12 months)	0	0	235
Unrealized Loss (Less than 12 months)	0	0	(6)
Fair Value (Estimated) (12 months or more)	62	128	106
Unrealized Loss (12 months or more)	(4)	(7)	(17)
Fair Value (Estimated)	62	128	341
Unrealized Losses	$ (4)	$ (7)	$ (23)

Loans - Loan Portfolio (Details

Loans - Loan Portfolio (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Schedule of Financing Receivables [Line Items]
Loans	$ 1,089,735	$ 1,071,526	$ 1,004,942
Percentage of loans receivable, by type	100.00%	100.00%	100.00%
Commercial | Real estate
Schedule of Financing Receivables [Line Items]
Loans	$ 304,663	$ 302,506	$ 279,683
Percentage of loans receivable, by type	28.00%	28.20%	27.80%
Commercial | Construction
Schedule of Financing Receivables [Line Items]
Loans	$ 28,775	$ 25,406	$ 20,138
Percentage of loans receivable, by type	2.60%	2.40%	2.00%
Commercial | Other
Schedule of Financing Receivables [Line Items]
Loans	$ 158,507	$ 150,769	$ 133,629
Percentage of loans receivable, by type	14.40%	14.10%	13.30%
Municipal
Schedule of Financing Receivables [Line Items]
Loans	$ 28,327	$ 27,056	$ 19,042
Percentage of loans receivable, by type	2.60%	2.50%	1.90%
Residential | Construction
Schedule of Financing Receivables [Line Items]
Loans	$ 13,717	$ 18,303	$ 11,754
Percentage of loans receivable, by type	1.30%	1.70%	1.20%
Residential | Term
Schedule of Financing Receivables [Line Items]
Loans	$ 421,202	$ 411,469	$ 405,495
Percentage of loans receivable, by type	38.70%	38.40%	40.30%
Home equity line of credit
Schedule of Financing Receivables [Line Items]
Loans	$ 110,016	$ 110,907	$ 110,249
Percentage of loans receivable, by type	10.10%	10.40%	11.00%
Consumer
Schedule of Financing Receivables [Line Items]
Loans	$ 24,528	$ 25,110	$ 24,952
Percentage of loans receivable, by type	2.30%	2.30%	2.50%

Loans - Narrative (Details)

Loans - Narrative (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017USD ($)loan	Mar. 31, 2016USD ($)loan	Dec. 31, 2016USD ($)loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net deferred loan costs	$ 5,167	$ 4,053	$ 4,921
Qualifying first mortgage loans	254,512	277,905	257,122
Loans pledged as collateral	$ 285,464	$ 258,369	$ 261,463
Loans classified as TDR (loan) | loan	70	82	71
Value of loans classified as TDR	$ 21,121	$ 23,628	$ 21,526
Number of TDR loans more than 30 days past due (loan) | loan	9	6
Value of TDR loans more than 30 days past due	$ 1,651	$ 890
Number of loans placed on TDR status (loan) | loan	0	0
Number of TDR loans involved in bankruptcy (loan) | loan	6
Value of TDR loans involved in bankruptcy	$ 1,524
Number of TDR loans on non-accrual status (loan) | loan	9
Value of TDR loans on non-accrual status	$ 1,770
Number of TDR loans in the process of foreclosure (loan) | loan	1
Loans Classified As Troubled Debt Restructurings That Are Involved In Foreclosure	$ 658
Number of mortgage loans in the process of foreclosure (loan) | loan	12	14
Value of mortgage loans in the process of foreclosure	$ 1,773	$ 1,399
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, 2017	Dec. 31, 2016	Mar. 31, 2016
Schedule of Financing Receivables [Line Items]
All Past Due	$ 10,412	$ 12,658	$ 8,247
Current	1,079,323	1,058,868	996,695
Total	1,089,735	1,071,526	1,004,942
90 Days or More & Accruing	11	777	452
30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	4,636	2,711	3,966
60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	1,127	4,227	696
90 Days or More Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	4,649	5,720	3,585
Commercial | Real estate
Schedule of Financing Receivables [Line Items]
All Past Due	2,737	3,476	1,255
Current	301,926	299,030	278,428
Total	304,663	302,506	279,683
90 Days or More & Accruing	0	753	0
Commercial | Real estate | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	142	1,039	428
Commercial | Real estate | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	772	22	376
Commercial | Real estate | 90 Days or More Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	1,823	2,415	451
Commercial | Construction
Schedule of Financing Receivables [Line Items]
All Past Due	20	0	150
Current	28,755	25,406	19,988
Total	28,775	25,406	20,138
90 Days or More & Accruing	0	0	0
Commercial | Construction | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	20	0	0
Commercial | Construction | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	0	0	0
Commercial | Construction | 90 Days or More Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	0	0	150
Commercial | Other
Schedule of Financing Receivables [Line Items]
All Past Due	792	1,031	433
Current	157,715	149,738	133,196
Total	158,507	150,769	133,629
90 Days or More & Accruing	0	20	0
Commercial | Other | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	199	202	323
Commercial | Other | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	154	33	110
Commercial | Other | 90 Days or More Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	439	796	0
Municipal
Schedule of Financing Receivables [Line Items]
All Past Due	0	0	0
Current	28,327	27,056	19,042
Total	28,327	27,056	19,042
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	13,717	18,303	11,754
Total	13,717	18,303	11,754
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	5,158	6,403	4,783
Current	416,044	405,066	400,712
Total	421,202	411,469	405,495
90 Days or More & Accruing	0	0	411
Residential | Term | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	3,555	631	2,321
Residential | Term | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	0	3,970	62
Residential | Term | 90 Days or More Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	1,603	1,802	2,400
Home equity line of credit
Schedule of Financing Receivables [Line Items]
All Past Due	1,332	1,564	1,383
Current	108,684	109,343	108,866
Total	110,016	110,907	110,249
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	392	704	718
Home equity line of credit | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	167	157	122
Home equity line of credit | 90 Days or More Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	773	703	543
Consumer
Schedule of Financing Receivables [Line Items]
All Past Due	373	184	243
Current	24,155	24,926	24,709
Total	24,528	25,110	24,952
90 Days or More & Accruing	11	4	41
Consumer | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	328	135	176
Consumer | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	34	45	26
Consumer | 90 Days or More Past Due
Schedule of Financing Receivables [Line Items]
All Past Due	$ 11	$ 4	$ 41

Loans - Nonaccrual Loans (Detai

Loans - Nonaccrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	$ 8,500	$ 7,774	$ 6,687
Commercial | Real estate
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	2,625	1,907	920
Commercial | Construction
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	0	0	180
Commercial | Other
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	938	964	69
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	4,028	4,060	4,677
Home equity line of credit
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	909	843	841
Consumer
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	$ 0	$ 0	$ 0

Loans - Impaired Loans by Class

Loans - Impaired Loans by Class (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded investment, with no related allowance	$ 20,235	$ 20,544	$ 19,716
Recorded investment, with related allowance	7,617	8,066	7,867
Recorded Investment	27,852	28,610	27,583
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no related allowance	22,308	22,651	21,853
Unpaid principal balance with related allowance	7,990	8,427	8,116
Unpaid Principal Balance	30,298	31,078	29,969
Related Allowance	768	599	974
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, with no related allowance	19,817	20,490	19,605
Average recorded investment, with related allowance	7,732	8,483	8,612
Average Recorded Investment	27,549	28,973	28,217
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract]
Interest income, cash basis method, with no related allowance	211	187	781
Interest income, cash basis method, with related allowance	82	88	323
Interest income, cash basis method	293	275	1,104
Commercial | Real estate
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded investment, with no related allowance	5,949	7,381	5,201
Recorded investment, with related allowance	4,722	3,129	4,820
Recorded Investment	10,671	10,510	10,021
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no related allowance	6,450	7,712	5,614
Unpaid principal balance with related allowance	4,908	3,213	4,925
Unpaid Principal Balance	11,358	10,925	10,539
Related Allowance	351	69	505
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, with no related allowance	5,444	7,221	6,252
Average recorded investment, with related allowance	4,741	3,399	4,153
Average Recorded Investment	10,185	10,620	10,405
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract]
Interest income, cash basis method, with no related allowance	51	79	220
Interest income, cash basis method, with related allowance	46	36	186
Interest income, cash basis method	97	115	406
Commercial | Construction
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded investment, with no related allowance	0	179	0
Recorded investment, with related allowance	763	788	763
Recorded Investment	763	967	763
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no related allowance	0	238	0
Unpaid principal balance with related allowance	763	788	763
Unpaid Principal Balance	763	1,026	763
Related Allowance	101	96	100
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, with no related allowance	0	80	32
Average recorded investment, with related allowance	763	926	816
Average Recorded Investment	763	1,006	848
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract]
Interest income, cash basis method, with no related allowance	0	1	0
Interest income, cash basis method, with related allowance	9	8	36
Interest income, cash basis method	9	9	36
Commercial | Other
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded investment, with no related allowance	1,476	1,097	1,671
Recorded investment, with related allowance	234	88	72
Recorded Investment	1,710	1,185	1,743
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no related allowance	1,636	1,137	1,852
Unpaid principal balance with related allowance	272	96	72
Unpaid Principal Balance	1,908	1,233	1,924
Related Allowance	39	21	39
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, with no related allowance	1,595	1,121	1,074
Average recorded investment, with related allowance	125	80	317
Average Recorded Investment	1,720	1,201	1,391
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract]
Interest income, cash basis method, with no related allowance	22	8	86
Interest income, cash basis method, with related allowance	4	0	0
Interest income, cash basis method	26	8	86
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]
Interest income, cash basis method, with no related allowance	0	0	0
Interest income, cash basis method, with related allowance	0	0	0
Interest income, cash basis method	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]
Interest income, cash basis method, with no related allowance	0	0	0
Interest income, cash basis method, with related allowance	0	0	0
Interest income, cash basis method	0	0	0
Residential | Term
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded investment, with no related allowance	11,388	10,543	11,483
Recorded investment, with related allowance	1,872	3,997	2,186
Recorded Investment	13,260	14,540	13,669
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no related allowance	12,470	11,541	12,654
Unpaid principal balance with related allowance	2,020	4,265	2,328
Unpaid Principal Balance	14,490	15,806	14,982
Related Allowance	251	384	304
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, with no related allowance	11,402	10,715	11,025
Average recorded investment, with related allowance	2,077	3,995	3,209
Average Recorded Investment	13,479	14,710	14,234
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract]
Interest income, cash basis method, with no related allowance	129	91	442
Interest income, cash basis method, with related allowance	23	43	101
Interest income, cash basis method	152	134	543
Home equity line of credit
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded investment, with no related allowance	1,422	1,344	1,361
Recorded investment, with related allowance	26	64	26
Recorded Investment	1,448	1,408	1,387
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid principal balance, with no related allowance	1,752	2,023	1,733
Unpaid principal balance with related allowance	27	65	28
Unpaid Principal Balance	1,779	2,088	1,761
Related Allowance	26	29	26
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, with no related allowance	1,376	1,353	1,213
Average recorded investment, with related allowance	26	83	69
Average Recorded Investment	1,402	1,436	1,282
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract]
Interest income, cash basis method, with no related allowance	9	8	33
Interest income, cash basis method, with related allowance	0	1	0
Interest income, cash basis method	9	9	33
Consumer
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	9
Average recorded investment, with related allowance	0	0	48
Average Recorded Investment	0	0	57
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract]
Interest income, cash basis method, with no related allowance	0	0	0
Interest income, cash basis method, with related allowance	0	0	0
Interest income, cash basis method	$ 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, 2017USD ($)loan	Mar. 31, 2016USD ($)loan	Dec. 31, 2016USD ($)loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans (loan) | loan	70	82	71
Balance	$ 21,121	$ 23,628	$ 21,526
Specific Reserves	$ 386	$ 436	$ 736
Commercial | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans (loan) | loan	10	14	10
Balance	$ 8,703	$ 10,133	$ 8,937
Specific Reserves	$ 82	$ 65	$ 375
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans (loan) | loan	1	1	1
Balance	$ 763	$ 788	$ 763
Specific Reserves	$ 101	$ 96	$ 100
Commercial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans (loan) | loan	5	10	5
Balance	$ 772	$ 1,116	$ 779
Specific Reserves	$ 2	$ 0	$ 0
Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans (loan) | 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) | 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) | loan	51	53	52
Balance	$ 10,344	$ 10,856	$ 10,503
Specific Reserves	$ 201	$ 275	$ 261
Home equity line of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans (loan) | loan	3	4	3
Balance	$ 539	$ 735	$ 544
Specific Reserves	$ 0	$ 0	$ 0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans (loan) | loan	0	0	0
Balance	$ 0	$ 0	$ 0
Specific Reserves	$ 0	$ 0	$ 0

Loans - TDR's by Class and the

Loans - TDR's by Class and the Associated Specific Reserves (Details) $ in Thousands	Mar. 31, 2017USD ($)loan	Mar. 31, 2016USD ($)loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Classified As Troubled Debt Restructurings That Are Involved In Foreclosure	$ 658
Number of TDR loans more than 30 days past due (loan) | loan	9	6
Value of TDR loans more than 30 days past due	$ 1,651	$ 890
Specific reserve of TDR loans more than 30 days past due	$ 0	$ 46
Commercial | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of TDR loans more than 30 days past due (loan) | loan	1	1
Value of TDR loans more than 30 days past due	$ 658	$ 155
Specific reserve of TDR loans more than 30 days past due	$ 0	$ 0
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of TDR loans more than 30 days past due (loan) | loan	0	0
Value of TDR loans more than 30 days past due	$ 0	$ 0
Specific reserve of TDR loans more than 30 days past due	$ 0	$ 0
Commercial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of TDR loans more than 30 days past due (loan) | loan	0	0
Value of TDR loans more than 30 days past due	$ 0	$ 0
Specific reserve of TDR loans more than 30 days past due	$ 0	$ 0
Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of TDR loans more than 30 days past due (loan) | loan	0	0
Value of TDR loans more than 30 days past due	$ 0	$ 0
Specific reserve of TDR loans more than 30 days past due	$ 0	$ 0
Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of TDR loans more than 30 days past due (loan) | loan	0	0
Value of TDR loans more than 30 days past due	$ 0	$ 0
Specific reserve of TDR loans more than 30 days past due	$ 0	$ 0
Residential | Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of TDR loans more than 30 days past due (loan) | loan	7	5
Value of TDR loans more than 30 days past due	$ 826	$ 735
Specific reserve of TDR loans more than 30 days past due	$ 0	$ 46
Home equity line of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of TDR loans more than 30 days past due (loan) | loan	1	0
Value of TDR loans more than 30 days past due	$ 167	$ 0
Specific reserve of TDR loans more than 30 days past due	$ 0	$ 0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of TDR loans more than 30 days past due (loan) | loan	0	0
Value of TDR loans more than 30 days past due	$ 0	$ 0
Specific reserve of TDR loans more than 30 days past due	$ 0	$ 0

Allowance for Loan Losses Narra

Allowance for Loan Losses Narrative (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017USD ($)loan_class	Dec. 31, 2016USD ($)	Mar. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of classes in the loan portfolio (loan class) | loan_class	8
Allowance for loan and lease losses, percent	0.40%	0.39%
Allowance for loan and lease losses, period increase (decrease)	$ 104
Allowance for loan losses	$ 10,367	$ 10,138	$ 10,219	$ 9,916
Allowance for loan losses as a percent of total loans	0.95%	0.95%	1.02%
Number of classes in the commercial loan portfolio (loan class) | loan_class	3
Residential loans typical loan to value range, maximum	80.00%
Construction loans accrual to company capital	27.80%
Constructions loan portfolio maximum to company capital	100.00%
Construction and non owner occupied commercial real estate	107.10%
Maximum loan portfolio to company capital	300.00%
Outstanding loans and commitments subject by independent consulting firm	50.00%
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 573	$ 559	$ 654	566
Delinquent period before consumer loans charged off	120 days
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
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	$ 811	807	905	$ 893
Unallocated Reserves
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 1,591	$ 1,258	$ 1,591
Percent of total reserve allowance accounted for by loan loss allowances	15.30%	12.40%

Allowance for Loan Losses - Fi

Allowance for Loan Losses - Financing Receivable and Allowance Element by Class (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 10,367	$ 10,138	$ 10,219	$ 9,916
Specific Reserves on Loans Evaluated Individually for Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	768	974	599
General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	3,689	3,691	3,481
Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	4,319	4,215	4,548
Unallocated Reserves
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	1,591	1,258	1,591
Commercial | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	4,015	3,988	3,524	3,120
Commercial | Real estate | Specific Reserves on Loans Evaluated Individually for Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	351	505	69
Commercial | Real estate | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	1,631	1,471	1,236
Commercial | Real estate | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	2,033	2,012	2,219
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	441	396	345	580
Commercial | Construction | Specific Reserves on Loans Evaluated Individually for Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	101	100	96
Commercial | Construction | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	151	125	89
Commercial | Construction | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	189	171	160
Commercial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	1,925	1,780	1,676	1,452
Commercial | Other | Specific Reserves on Loans Evaluated Individually for Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	39	39	21
Commercial | Other | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	840	735	592
Commercial | Other | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	1,046	1,006	1,063
Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	18	18	17	17
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	18	18	17
Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	24	44	33	24
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	9	25	19
Residential | Construction | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	15	19	14
Residential | Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	969	1,288	1,474	1,391
Residential | Term | Specific Reserves on Loans Evaluated Individually for Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	251	304	384
Residential | Term | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	282	563	630
Residential | Term | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	436	421	460
Home equity line of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	811	807	905	893
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	26	26	29
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	439	444	502
Home equity line of credit | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	346	337	374
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	573	559	654	566
Consumer | Specific Reserves on Loans Evaluated Individually for Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	0	0	0
Consumer | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	337	328	413
Consumer | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	236	231	241
Unallocated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	1,591	1,258	1,591	$ 1,873
Unallocated | Unallocated Reserves
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 1,591	$ 1,258	$ 1,591

Allowance for Loan Losses - Ri

Allowance for Loan Losses - Risk Ratings by Segment (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	$ 520,272	$ 505,737	$ 452,492
1 Strong
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	501	852	996
2 Above Average
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	49,959	48,491	52,679
3 Satisfactory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	133,644	132,372	95,318
4 Average
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	229,939	221,073	208,908
5 Watch
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	67,572	67,394	59,479
6 OAEM
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	9,697	6,156	12,311
7 Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	28,960	29,399	22,801
8 Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	0	0	0
Commercial | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	304,663	302,506	279,683
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	28,775	25,406	20,138
Commercial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	158,507	150,769	133,629
Commercial | 1 Strong | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	2	2	6
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	499	850	990
Commercial | 2 Above Average | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	14,213	13,981	27,586
Commercial | 2 Above Average | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	45	49	55
Commercial | 2 Above Average | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	8,222	8,934	7,707
Commercial | 3 Satisfactory | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	83,021	81,286	59,080
Commercial | 3 Satisfactory | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	2,051	1,345	2,898
Commercial | 3 Satisfactory | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	47,724	48,212	31,629
Commercial | 4 Average | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	138,865	139,421	129,432
Commercial | 4 Average | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	18,283	16,506	11,926
Commercial | 4 Average | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	72,791	65,146	67,550
Commercial | 5 Watch | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	45,053	43,181	34,025
Commercial | 5 Watch | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	8,239	7,349	5,109
Commercial | 5 Watch | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	14,280	16,864	20,345
Commercial | 6 OAEM | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	4,036	4,569	9,821
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	5,661	1,587	2,490
Commercial | 7 Substandard | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	19,473	20,066	19,733
Commercial | 7 Substandard | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	157	157	150
Commercial | 7 Substandard | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	9,330	9,176	2,918
Commercial | 8 Doubtful | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	0	0	0
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	28,327	27,056	19,042
Municipal | 1 Strong
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	0	0	0
Municipal | 2 Above Average
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	27,479	25,527	17,331
Municipal | 3 Satisfactory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	848	1,529	1,711
Municipal | 4 Average
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and municipal risk-rated loans receivable	0	0	0
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 - Al

Allowance for Loan Losses - Allowance for Loan Loss Activity by Class (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 10,138	$ 9,916	$ 9,916
Charge offs	327	190	1,721
Recoveries	56	118	343
Provision for loan losses	500	375	1,600
Ending balance	10,367	10,219	10,138
Ending balance specifically evaluated for impairment	768	599	974
Ending balance collectively evaluated for impairment	9,599	9,620	9,164
Total	1,089,735	1,004,942	1,071,526
Ending balance specifically evaluated for impairment	27,852	28,610	27,583
Ending balance collectively evaluated for impairment	1,061,883	976,332	1,043,943
Commercial | Real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	3,988	3,120	3,120
Charge offs	164	0	294
Recoveries	0	0	0
Provision for loan losses	191	404	1,162
Ending balance	4,015	3,524	3,988
Ending balance specifically evaluated for impairment	351	69	505
Ending balance collectively evaluated for impairment	3,664	3,455	3,483
Total	304,663	279,683	302,506
Ending balance specifically evaluated for impairment	10,671	10,510	10,021
Ending balance collectively evaluated for impairment	293,992	269,173	292,485
Commercial | Construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	396	580	580
Charge offs	0	58	75
Recoveries	0	0	8
Provision for loan losses	45	(177)	(117)
Ending balance	441	345	396
Ending balance specifically evaluated for impairment	101	96	100
Ending balance collectively evaluated for impairment	340	249	296
Total	28,775	20,138	25,406
Ending balance specifically evaluated for impairment	763	967	763
Ending balance collectively evaluated for impairment	28,012	19,171	24,643
Commercial | Other
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,780	1,452	1,452
Charge offs	0	0	376
Recoveries	11	20	129
Provision for loan losses	134	204	575
Ending balance	1,925	1,676	1,780
Ending balance specifically evaluated for impairment	39	21	39
Ending balance collectively evaluated for impairment	1,886	1,655	1,741
Total	158,507	133,629	150,769
Ending balance specifically evaluated for impairment	1,710	1,185	1,743
Ending balance collectively evaluated for impairment	156,797	132,444	149,026
Municipal
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	18	17	17
Charge offs	0	0	0
Recoveries	0	0	0
Provision for loan losses	0	0	1
Ending balance	18	17	18
Ending balance specifically evaluated for impairment	0	0	0
Ending balance collectively evaluated for impairment	18	17	18
Total	28,327	19,042	27,056
Ending balance specifically evaluated for impairment	0	0	0
Ending balance collectively evaluated for impairment	28,327	19,042	27,056
Residential | Construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	44	24	24
Charge offs	0	0	0
Recoveries	0	0	0
Provision for loan losses	(20)	9	20
Ending balance	24	33	44
Ending balance specifically evaluated for impairment	0	0	0
Ending balance collectively evaluated for impairment	24	33	44
Total	13,717	11,754	18,303
Ending balance specifically evaluated for impairment	0	0	0
Ending balance collectively evaluated for impairment	13,717	11,754	18,303
Residential | Term
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,288	1,391	1,391
Charge offs	53	20	379
Recoveries	14	65	93
Provision for loan losses	(280)	38	183
Ending balance	969	1,474	1,288
Ending balance specifically evaluated for impairment	251	384	304
Ending balance collectively evaluated for impairment	718	1,090	984
Total	421,202	405,495	411,469
Ending balance specifically evaluated for impairment	13,260	14,540	13,669
Ending balance collectively evaluated for impairment	407,942	390,955	397,800
Home equity line of credit
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	807	893	893
Charge offs	7	49	147
Recoveries	0	1	5
Provision for loan losses	11	60	56
Ending balance	811	905	807
Ending balance specifically evaluated for impairment	26	29	26
Ending balance collectively evaluated for impairment	785	876	781
Total	110,016	110,249	110,907
Ending balance specifically evaluated for impairment	1,448	1,408	1,387
Ending balance collectively evaluated for impairment	108,568	108,841	109,520
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	559	566	566
Charge offs	103	63	450
Recoveries	31	32	108
Provision for loan losses	86	119	335
Ending balance	573	654	559
Ending balance specifically evaluated for impairment	0	0	0
Ending balance collectively evaluated for impairment	573	654	559
Total	24,528	24,952	25,110
Ending balance specifically evaluated for impairment	0	0	0
Ending balance collectively evaluated for impairment	24,528	24,952	25,110
Unallocated
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,258	1,873	1,873
Charge offs	0	0	0
Recoveries	0	0	0
Provision for loan losses	333	(282)	(615)
Ending balance	1,591	1,591	1,258
Ending balance specifically evaluated for impairment	0	0	0
Ending balance collectively evaluated for impairment	1,591	1,591	1,258
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	3 Months Ended		51 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants during the period (shares)	127,560
Total share based compensation cost	$ 1,428		$ 1,428
Compensation expense recognized	83	$ 49
Share-based compensation expense not yet recognized	$ 911	$ 706	$ 911
Plan 2,010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Capital shares reserved for future issuance (shares)				400,000
Plan 2010 | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants during the period (shares)			71,086

Stock-Based Compensation - Shar

Stock-Based Compensation - Shares of Restricted Stock Granted under 2010 Plan (Details) - shares	3 Months Ended	12 Months Ended				51 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares (in shares)	127,560
Plan 2010 | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares (in shares)						71,086
Remaining Term (In Years)						2 years 6 months
Plan 2010 | Five Years | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term (In Years)	5 years	5 years	5 years	5 years	5 years
Shares (in shares)	9,972	15,015	12,023	10,422	14,776
Remaining Term (In Years)	4 years 10 months 24 days	3 years 7 months 6 days	2 years 7 months 6 days	1 year 7 months 6 days	7 months 6 days
Plan 2010 | One Year | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term (In Years)	1 year
Shares (in shares)	3,976
Remaining Term (In Years)	10 months 24 days
Plan 2010 | Three Years | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term (In Years)	3 years
Shares (in shares)	4,902
Remaining Term (In Years)	2 years 10 months 24 days

Preferred and Common Stock (Det

Preferred and Common Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	Jan. 09, 2009	Nov. 30, 2016	Mar. 31, 2017	Mar. 31, 2016	May 31, 2015
Class of Stock [Line Items]
Number of shares of common stock issuable pursuant to the Warrants, maximum (in shares)	225,904				226,819
Exercise price of the Warrants (in dollars per share)	$ 16.60				$ 16.53
Term of warrants	10 years
Repurchase of warrants		$ 1,750
Issuance of common stock for plans			$ 185	$ 121
Capital Purchase Program
Class of Stock [Line Items]
Issuance of common stock for plans			$ 185	$ 121
Series A Preferred Stock
Class of Stock [Line Items]
Proceeds from issuance of CPP Shares	$ 25,000

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income (Numerator) [Abstract]
Net income as reported	$ 4,637	$ 4,503
Basic EPS: Income available to common shareholders	4,637	4,503
Diluted EPS: Income available to common shareholders plus assumed conversions	$ 4,637	$ 4,503
Shares (Denominator) [Abstract]
Basic EPS: Income available to common shareholders (in shares)	10,734,281	10,699,440
Effect of dilutive securities: restricted stock (in shares)	73,623	95,672
Diluted EPS: Income available to common shareholders plus assumed conversions (in shares)	10,807,904	10,795,112
Per-Share Amount [Abstract]
Basic EPS: Income available to common shareholders (in dollars per share)	$ 0.43	$ 0.42
Diluted EPS: Income available to common shareholders plus assumed conversions (in dollars per share)	$ 0.43	$ 0.42

Earnings Per Share - Schedule

Earnings Per Share - Schedule of Options and Warrants Outstanding (Details)	Mar. 31, 2016shares
Schedule of Outstanding Options And Warrants [Line Items]
Warrants to private parties (in shares)	226,819
Total Dilutive Securities (in shares)	226,819
In-the-Money
Schedule of Outstanding Options And Warrants [Line Items]
Warrants to private parties (in shares)	226,819
Total Dilutive Securities (in shares)	226,819
Out-of-the-Money
Schedule of Outstanding Options And Warrants [Line Items]
Warrants to private parties (in shares)	0
Total Dilutive Securities (in shares)	0

Employee Benefit Plans (Details

Employee Benefit Plans (Details)	3 Months Ended
	Mar. 31, 2017USD ($)employeepost_retirement_benefit_plan	Mar. 31, 2016USD ($)	Dec. 31, 2016USD ($)
General Discussion of Pension and Other Postretirement Benefits [Abstract]
Requisite period of service (months)	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	$ 130,000	$ 120,000
Unfunded, supplemental retirement benefits payable period (years)	20 years
Pension expense	$ 54,000	54,000
Accrued pension liability	$ 3,045,000	$ 3,082,000	$ 3,073,000
Number of post retirement benefit plans (post retirement benefit plan) | post_retirement_benefit_plan	2
Number of employees currently eligible (employee) | employee	7
Requisite age	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	4.25%
Assumed health care cost trend rate	7.00%
Expected future benefit payments, current year	$ 126,000
Estimated plan expense	77,000
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, Accumul

Employee Benefit Plans, Accumulated Post-Retirement Benefit Obligation, Funded Status, and Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Change in benefit obligation
Benefit obligation at beginning of year	$ 1,870	$ 1,967
Interest cost	19	21
Benefits paid	(32)	(30)
Benefit obligation at end of period	1,857	1,958
Funded status
Benefit obligation at end of period	(1,870)	(1,967)	$ (1,857)	$ (1,958)
Unamortized loss			102	240
Accrued benefit cost at end of period			$ (1,755)	$ (1,718)
Components of net periodic benefit cost
Interest cost	19	21
Net periodic benefit cost	$ 19	$ 21

Employee Benefit Plans, Schedul

Employee Benefit Plans, Schedule of Net Periodic Benefit Cost Not Yet Recognized (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
General Discussion of Pension and Other Postretirement Benefits [Abstract]
Unamortized net actuarial loss	$ (156)	$ (240)	$ (156)
Deferred tax benefit at 35%	54	84	54
Net unrecognized postretirement benefits included in accumulated other comprehensive income (loss)	$ (102)	$ (156)	$ (102)
Deferred tax benefit, percentage	35.00%	35.00%	35.00%

Other Comprehensive Income (L63

Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning balance	$ 172,521	$ 167,498
Other comprehensive income	60	1,841
Balance, ending period	174,853	171,545
Accumulated Net Investment Gain (Loss) Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning balance	(935)	1,123
Unrealized gains arising during the period	5	3,385
Reclassification of realized gains during the period	(3)	(536)
Related deferred taxes	(1)	(997)
Other comprehensive income	1	1,852
Balance, ending period	$ (934)	$ 2,975

Other Comprehensive Income (L64

Other Comprehensive Income (Loss) - Reclassification of Available-for-Sale Securities to Held-to-Maturity Securities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Reclassification of Available-for-Sale Securities to Held-to-maturity Roll Forward [Roll Forward]
Balance, beginning balance	$ 172,521	$ 167,498
Other comprehensive income	60	1,841
Balance, ending period	174,853	171,545
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]
Balance, beginning balance	(129)	(112)
Amortization of net unrealized losses	(6)	(17)
Related deferred taxes	2	6
Other comprehensive income	(4)	(11)
Balance, ending period	$ (133)	$ (123)

Other Comprehensive Income (L65

Other Comprehensive Income (Loss) - Derivative Instruments Included in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning balance	$ 172,521	$ 167,498
Other comprehensive income	60	1,841
Balance, ending period	174,853	171,545
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning balance	1,163	0
Unrealized gains arising during the period	96	0
Related deferred taxes	(33)	0
Other comprehensive income	63	0
Balance, ending period	$ 1,226	$ 0

Other Comprehensive Income (L66

Other Comprehensive Income (Loss) - Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Roll Forward]
Balance, beginning balance	$ 172,521	$ 167,498
Balance, ending period	174,853	171,545
Accumulated Defined Benefit Plans Adjustment Attributable to Parent
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Roll Forward]
Balance, beginning balance	(102)	(156)
Amortization of unrecognized transition obligation	0	0
Change in unamortized net actuarial gain (loss)	0	0
Related deferred taxes	0	0
Balance, ending period	$ (102)	$ (156)

Financial Derivative Instrume67

Financial Derivative Instruments (Details) - Cash Flow Hedging - Designated as Hedging Instrument - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Interest Rate Swap June 28 2016
Derivative [Line Items]
Notional Amount	$ 30,000,000
Fixed Rate Paid	0.94%
Fair Value	$ 1,108,000	$ 0
Interest Rate Swap June 27 2016
Derivative [Line Items]
Notional Amount	$ 20,000,000
Fixed Rate Paid	0.893%
Fair Value	$ 778,000	0
Interest Rate Swap
Derivative [Line Items]
Notional Amount	50,000,000
Fair Value	$ 1,886,000	$ 0

Mortgage Servicing Rights - Nar

Mortgage Servicing Rights - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Transfers and Servicing [Abstract]
Moving average of weekly prepayment assumption (months)	3 months
Prepayment speed	12.00%
Average quarterly discount rate	10 years
Discount rate adjustment rate	5.00%
Origination of Mortgage Servicing Rights (MSRs)	$ 102	$ 0
Amortization of Mortgage Servicing Rights (MSRs)	95	97
Mortgage servicing rights	1,853	1,543	$ 1,696
Residential mortgage loans serviced for others, principal	$ 251,865	$ 223,565	$ 250,083

Mortgage Servicing Rights Inclu

Mortgage Servicing Rights Included in Other Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Transfers and Servicing [Abstract]
Mortgage servicing rights	$ 4,491	$ 5,901	$ 5,747
Accumulated amortization	(3,415)	(4,680)	(4,716)
Impairment reserve	(22)	(108)	(107)
Total Servicing asset at fair value	$ 1,054	$ 1,113	$ 924

Certificates of Deposit (Detail

Certificates of Deposit (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Banking and Thrift [Abstract]
Certificates of deposit less than $100,000	$ 246,792	$ 195,115	$ 197,006
Certificates $100,000 to $250,000	236,971	240,904	226,644
Certificates $250,000 and over	43,286	40,601	49,062
Total certificates of deposit	$ 527,049	$ 476,620	$ 472,712

Fair Value - Assets and Liabili

Fair Value - Assets and Liabilities Recorded at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 312,624	$ 300,416	$ 216,725
Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	293,627	280,604	193,657
State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	15,705	16,482	19,904
Other equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	3,292	3,330	3,164
Total Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	312,624	300,416	216,725
Interest rate swap agreements	1,886	1,790
Total Fair Value | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Interest rate swap agreements		0
Total Fair Value | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	312,624	300,416	216,725
Interest rate swap agreements	1,886	1,790
Total Fair Value | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Interest rate swap agreements	0	0
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
Total assets	0	0
Fair Value, Measurements, Recurring | Level 1 | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap agreements	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 1 | Other equity 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 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	312,624	300,416	216,725
Total assets	314,510	302,206
Fair Value, Measurements, Recurring | Level 2 | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap agreements	1,886	1,790
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	293,627	280,604	193,657
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	15,705	16,482	19,904
Fair Value, Measurements, Recurring | Level 2 | Other equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	3,292	3,330	3,164
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
Total assets	0	0
Fair Value, Measurements, Recurring | Level 3 | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap agreements	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 | Level 3 | Other equity 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 | Total Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	312,624	300,416	216,725
Total assets	314,510	302,206
Fair Value, Measurements, Recurring | Total Fair Value | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap agreements	1,886	1,790
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	293,627	280,604	193,657
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	15,705	16,482	19,904
Fair Value, Measurements, Recurring | Total Fair Value | Other equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 3,292	$ 3,330	$ 3,164

Fair Value - Additional Informa

Fair Value - Additional Information (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Fair Value Disclosures [Abstract]
Valuation allowance on real estate owned	$ 78	$ 205	$ 130
Valuation allowance on impaired financing receivable	$ 356	$ 478	$ 158

Fair Value - Assets and Liabi73

Fair Value - Assets and Liabilities Recorded at Fair Value on a Non-Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 525	$ 375	$ 1,592
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	525	375	1,592
Impaired loans	718	827	879
Total assets	1,243	1,202	2,471
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	525	375	1,592
Impaired loans	718	827	879
Total assets	$ 1,243	$ 1,202	$ 2,471

Fair Value - Assets and Liabi74

Fair Value - Assets and Liabilities at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 17,600	$ 17,366	$ 14,533	$ 14,299
Interest bearing deposits in other banks	3,272	293	6,372
Securities available for sale	312,624	300,416	216,725
Securities to be held to maturity	240,829	226,828	236,611
Securities to be held to maturity	239,378	225,537	243,337
Restricted equity securities	13,363	11,930	13,875
Loans held for sale	979	782	224
Mortgage servicing rights	1,853	1,696	1,543
Demand deposits	181,188	140,482	116,756
NOW deposits	273,050	282,971	240,112
Money market deposits	142,220	125,544	74,643
Savings deposits	222,976	217,340	205,218
Total deposits	1,346,483	1,242,957	1,109,441
Carrying value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	17,600	17,366	14,533
Interest bearing deposits in other banks	3,272	293	6,372
Securities available for sale	312,624	300,416	216,725
Securities to be held to maturity	240,829	226,828	236,611
Restricted equity securities	13,363	11,930	13,875
Loans held for sale	979	782	224
Loans	1,079,368	1,061,388	994,723
Mortgage servicing rights	1,054	1,113	924
Interest rate swap agreements	1,886	1,790
Accrued interest receivable	6,854	5,532	6,271
Demand deposits	181,188	140,482	116,756
NOW deposits	273,050	282,971	240,112
Money market deposits	142,220	125,544	74,643
Savings deposits	222,976	217,340	205,218
Local certificates of deposit	213,296	210,316	207,664
National certificates of deposit	313,753	266,304	265,048
Total deposits	1,346,483	1,242,957	1,109,441
Repurchase agreements	76,342	84,174	91,399
Federal Home Loan Bank advances	150,125	194,727	185,132
Total borrowed funds	226,467	278,901	276,531
Accrued interest payable	519	479	495
Carrying value | Commercial | Real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	299,920	297,952	275,510
Carrying value | Commercial | Construction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	28,254	24,954	19,729
Carrying value | Commercial | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	156,233	148,737	131,644
Carrying value | Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	28,306	27,035	19,022
Carrying value | Residential | Construction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	13,689	18,253	11,715
Carrying value | Residential | Term
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	420,057	409,999	403,749
Carrying value | Home equity line of credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	109,058	109,986	109,177
Carrying value | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	23,851	24,472	24,177
Total Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	17,600	17,366	14,533
Interest bearing deposits in other banks	3,272	293	6,372
Securities available for sale	312,624	300,416	216,725
Securities to be held to maturity	239,378	225,537	243,337
Restricted equity securities	13,363	11,930	13,875
Loans held for sale	979	782	224
Loans	1,071,721	1,053,814	998,177
Mortgage servicing rights	1,853	1,696	1,543
Interest rate swap agreements	1,886	1,790
Accrued interest receivable	6,854	5,532	6,271
Demand deposits	171,979	133,342	116,614
NOW deposits	250,323	259,418	230,934
Money market deposits	130,374	115,087	68,221
Savings deposits	193,142	188,260	187,346
Local certificates of deposit	212,337	209,370	209,455
National certificates of deposit	313,833	266,372	265,335
Total deposits	1,271,988	1,171,849	1,077,905
Repurchase agreements	72,399	79,827	88,442
Federal Home Loan Bank advances	149,358	193,733	186,398
Total borrowed funds	221,757	273,560	274,840
Accrued interest payable	519	479	495
Total Fair Value | Commercial | Real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	295,039	293,103	272,302
Total Fair Value | Commercial | Construction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	27,794	24,548	19,499
Total Fair Value | Commercial | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	154,823	147,394	131,637
Total Fair Value | Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	28,737	27,446	19,994
Total Fair Value | Residential | Construction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	13,593	18,125	11,648
Total Fair Value | Residential | Term
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	420,393	410,327	410,670
Total Fair Value | Home equity line of credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	107,823	108,740	108,274
Total Fair Value | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	23,519	24,131	24,153
Total Fair Value | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	17,600	17,366	14,533
Interest bearing deposits in other banks	3,272	293	6,372
Securities available for sale	0	0	0
Securities to be held to maturity	0	0	0
Restricted equity securities	0	0	0
Loans held for sale	0	0	0
Loans	0	0	0
Mortgage servicing rights	0	0	0
Interest rate swap agreements		0
Accrued interest receivable	0	0	0
Demand deposits	0	0	0
NOW deposits	0	0	0
Money market deposits	0	0	0
Savings deposits	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
Accrued interest payable	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]
Cash and cash equivalents	0	0	0
Interest bearing deposits in other banks	0	0	0
Securities available for sale	312,624	300,416	216,725
Securities to be held to maturity	239,378	225,537	243,337
Restricted equity securities	13,363	11,930	13,875
Loans held for sale	979	782	224
Loans	718	827	879
Mortgage servicing rights	1,853	1,696	1,543
Interest rate swap agreements	1,886	1,790
Accrued interest receivable	6,854	5,532	6,271
Demand deposits	171,979	133,342	116,614
NOW deposits	250,323	259,418	230,934
Money market deposits	130,374	115,087	68,221
Savings deposits	193,142	188,260	187,346
Local certificates of deposit	212,337	209,370	209,455
National certificates of deposit	313,833	266,372	265,335
Total deposits	1,271,988	1,171,849	1,077,905
Repurchase agreements	72,399	79,827	88,442
Federal Home Loan Bank advances	149,358	193,733	186,398
Total borrowed funds	221,757	273,560	274,840
Accrued interest payable	519	479	495
Total Fair Value | Level 2 | Commercial | Real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	424	558	0
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	33	33	0
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	261	236	17
Total Fair Value | Level 2 | Home equity line of credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0	862
Total Fair Value | Level 2 | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0	0
Total Fair Value | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0	0
Interest bearing deposits in other banks	0	0	0
Securities available for sale	0	0	0
Securities to be held to maturity	0	0	0
Restricted equity securities	0	0	0
Loans held for sale	0	0	0
Loans	1,071,003	1,052,987	997,298
Mortgage servicing rights	0	0	0
Interest rate swap agreements	0	0
Accrued interest receivable	0	0	0
Demand deposits	0	0	0
NOW deposits	0	0	0
Money market deposits	0	0	0
Savings deposits	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
Accrued interest payable	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	294,615	292,545	272,302
Total Fair Value | Level 3 | Commercial | Construction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	27,794	24,548	19,499
Total Fair Value | Level 3 | Commercial | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	154,790	147,361	131,637
Total Fair Value | Level 3 | Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	28,737	27,446	19,994
Total Fair Value | Level 3 | Residential | Construction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	13,593	18,125	11,648
Total Fair Value | Level 3 | Residential | Term
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	420,132	410,091	410,653
Total Fair Value | Level 3 | Home equity line of credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	107,823	108,740	107,412
Total Fair Value | Level 3 | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	$ 23,519	$ 24,131	$ 24,153