Emclaire Financial (EMCF) 10-Q 13 Nov 17 2017 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Nov. 12, 2017
Document And Entity Information [Abstract]
Entity Registrant Name	EMCLAIRE FINANCIAL CORP
Entity Central Index Key	858,800
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Trading Symbol	EMCF
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		2,264,389

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 3,216	$ 2,758
Interest earning deposits with banks	37,040	14,810
Cash and cash equivalents	40,256	17,568
Securities available for sale	101,301	101,560
Loans held for sale	0	68
Loans receivable, net of allowance for loan losses of $5,940 and $5,545	574,736	515,435
Federal bank stocks, at cost	4,906	4,861
Bank-owned life insurance	11,639	11,390
Accrued interest receivable	2,228	1,815
Premises and equipment, net	18,405	18,282
Goodwill	10,288	10,288
Core deposit intangible, net	550	560
Prepaid expenses and other assets	9,631	10,308
Total Assets	773,940	692,135
Deposits:
Non-interest bearing	129,870	123,717
Interest bearing	532,682	461,223
Total deposits	662,552	584,940
Short-term borrowed funds	2,500	9,500
Long-term borrowed funds	38,750	34,500
Accrued interest payable	399	239
Accrued expenses and other liabilities	9,986	8,883
Total Liabilities	714,187	638,062
Commitments and Contingent Liabilities
Stockholders' Equity:
Common stock, $1.25 par value, 12,000,000 shares authorized; 2,366,406 and 2,254,375 shares issued; 2,264,389 and 2,152,358 shares outstanding, respectively	2,958	2,818
Additional paid-in capital	30,974	27,900
Treasury stock, at cost; 102,017 shares	(2,114)	(2,114)
Retained earnings	31,901	29,960
Accumulated other comprehensive loss	(3,966)	(4,491)
Total Stockholders' Equity	59,753	54,073
Total Liabilities and Stockholders' Equity	$ 773,940	$ 692,135

Consolidated Balance Sheets (U3

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Allowance for loan losses	$ 5,940	$ 5,545
Common stock, par value (in dollars per share)	$ 1.25	$ 1.25
Common stock authorized (in shares)	12,000,000	12,000,000
Common stock issued (in shares)	2,366,406	2,254,375
Common stock outstanding (in shares)	2,264,389	2,152,358
Treasury stock (in shares)	102,017	102,017

Consolidated Statements of Net

Consolidated Statements of Net Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest and dividend income:
Loans receivable, including fees	$ 5,966	$ 5,444	$ 17,333	$ 15,331
Securities:
Taxable	421	396	1,208	1,270
Exempt from federal income tax	134	157	418	473
Federal bank stocks	64	49	179	135
Interest earning deposits with banks	98	48	151	110
Total interest and dividend income	6,683	6,094	19,289	17,319
Interest expense:
Deposits	824	781	2,276	2,091
Borrowed funds	322	308	954	847
Total interest expense	1,146	1,089	3,230	2,938
Net interest income	5,537	5,005	16,059	14,381
Provision for loan losses	270	168	633	470
Net interest income after provision for loan losses	5,267	4,837	15,426	13,911
Noninterest income:
Fees and service charges	448	433	1,290	1,164
Net gain on sales of available for sale securities	0	0	350	83
Net gain on sales of loans	46	121	176	121
Other-than-temporary impairment loss	0	0	(508)	0
Earnings on bank-owned life insurance	103	101	305	299
Gain on bargain purchase	1,307	0	1,307	0
Other	370	357	1,076	1,067
Total noninterest income	2,274	1,012	3,996	2,734
Noninterest expense:
Compensation and employee benefits	2,288	2,259	6,957	6,484
Premises and equipment	718	732	2,203	2,110
Intangible asset amortization	58	60	177	165
Professional fees	157	172	575	545
Federal deposit insurance	115	123	325	305
Acquisition costs	963	0	1,069	401
Other	1,143	1,148	3,434	2,965
Total noninterest expense	5,442	4,494	14,740	12,975
Income before provision for income taxes	2,099	1,355	4,682	3,670
Provision for income taxes	392	297	978	880
Net income	$ 1,707	$ 1,058	$ 3,704	$ 2,790
Basic earnings per common share (in dollars per share)	$ 0.77	$ 0.49	$ 1.70	$ 1.30
Diluted earnings per common share (in dollars per share)	$ 0.77	$ 0.49	$ 1.69	$ 1.29
Average common shares outstanding - basic (in shares)	2,204,949	2,146,308	2,174,210	2,145,761
Average common shares outstanding - diluted (in shares)	2,220,420	2,158,273	2,190,647	2,155,902

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 1,707	$ 1,058	$ 3,704	$ 2,790
Unrealized gains on securities:
Unrealized holding gain arising during the period	232	(271)	638	1,760
Reclassification adjustment for gains included in net income	0	0	(350)	(83)
Reclassification adjustment for other than temporary impairment losses included in net income	0	0	508	0
Other comprehensive income total	232	(271)	796	1,677
Tax effect	(79)	92	(271)	(570)
Net of tax	153	(179)	525	1,107
Comprehensive income	$ 1,860	$ 879	$ 4,229	$ 3,897

Condensed Consolidated Statemen

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities
Net income	$ 3,704	$ 2,790
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	864	835
Provision for loan losses	633	470
Amortization of premiums, net	367	300
Amortization of intangible assets and mortgage servicing rights	213	179
Impairment loss on security recognized in earnings	508	0
Realized gains on sales of available for sale securities, net	(350)	(83)
Net gains on sales of loans	(176)	(121)
Net gains on foreclosed real estate	(10)	(17)
Gain on bargain purchase	(1,307)	0
Loss on sale of premises and equipment	0	10
Loans originated for sale	(4,266)	(1,101)
Proceeds from the sale of loans originated for sale	4,418	1,078
Stock compensation expense	164	154
Increase in bank-owned life insurance, net	(249)	(248)
Increase in accrued interest receivable	(310)	(234)
(Increase) decrease in prepaid expenses and other assets	1,265	(271)
Increase in accrued interest payable	154	28
Increase (decrease) in accrued expenses and other liabilities	1,095	(465)
Net cash provided by operating activities	6,717	3,304
Cash flows from investing activities
Loan originations and principal collections, net	(43,771)	(8,071)
Purchase of residential mortgage loans	0	(6,911)
Proceeds from sales of loans held for sale previously classified as portfolio loans	1,817	1,944
Available for sale securities:
Sales	18,195	6,118
Maturities, repayments and calls	7,818	15,478
Purchases	(25,163)	(9,270)
Net cash (received) paid for acquisition	2,517	(3,309)
Redemption (purchase) of federal bank stocks	(34)	1,364
Proceeds from the sale of foreclosed real estate	144	215
Purchases of premises and equipment	(279)	(1,943)
Net cash used in investing activities	(38,756)	(4,385)
Cash flows from financing activities
Net increase in deposits	57,864	30,013
Repayments on long-term debt	(750)	(5,250)
Proceeds from other long-term debt	5,000	5,000
Net change in short-term borrowings	(7,000)	(11,750)
Proceeds from exercise of stock options	1,376	0
Dividends paid	(1,763)	(1,674)
Net cash provided by financing activities	54,727	16,339
Increase in cash and cash equivalents	22,688	15,258
Cash and cash equivalents at beginning of period	17,568	11,546
Cash and cash equivalents at end of period	40,256	26,804
Supplemental information:
Interest paid	3,070	2,881
Income taxes paid	875	600
Supplemental noncash disclosure:
Transfers from loans to foreclosed real estate	272	218
Transfers from portfolio loans to loans held for sale	$ 1,725	$ 1,859

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders’ Equity (Unaudited) $ in Thousands	USD ($)$ / shares
Balance at beginning of period at Dec. 31, 2015	$ 52,839
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,790
Other comprehensive income (loss)	1,107
Stock compensation expense	154
Dividends declared on common stock	(1,674)
Exercise of stock options (53,586 shares)	0
Issuance of common stock (58,445 shares)	0
Balance at end of period at Sep. 30, 2016	$ 55,216
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividend per common share (in dollars per share) | $ / shares	$ 0.78
Balance at beginning of period at Jun. 30, 2016	$ 54,851
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,058
Other comprehensive income (loss)	(179)
Stock compensation expense	44
Dividends declared on common stock	(558)
Exercise of stock options (53,586 shares)	0
Issuance of common stock (58,445 shares)	0
Balance at end of period at Sep. 30, 2016	$ 55,216
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividend per common share (in dollars per share) | $ / shares	$ 0.26
Balance at beginning of period at Dec. 31, 2016	$ 54,073
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,704
Other comprehensive income (loss)	525
Stock compensation expense	164
Dividends declared on common stock	(1,763)
Exercise of stock options (53,586 shares)	1,376
Issuance of common stock (58,445 shares)	1,674
Balance at end of period at Sep. 30, 2017	$ 59,753
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividend per common share (in dollars per share) | $ / shares	$ 0.81
Balance at beginning of period at Jun. 30, 2017	$ 56,647
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,707
Other comprehensive income (loss)	153
Stock compensation expense	55
Dividends declared on common stock	(596)
Exercise of stock options (53,586 shares)	113
Issuance of common stock (58,445 shares)	1,674
Balance at end of period at Sep. 30, 2017	$ 59,753
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividend per common share (in dollars per share) | $ / shares	$ 0.27

Consolidated Statements of Cha8

Consolidated Statements of Changes in Stockholders’ Equity (Unaudited) (Parenthetical)	9 Months Ended
	Sep. 30, 2017shares
Statement of Stockholders' Equity [Abstract]
Options exercised in period (in shares)	53,586
Stock issued (in shares)	58,445

Nature of Operations and Basis

Nature of Operations and Basis of Presentation	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations and Basis of Presentation	Nature of Operations and Basis of Presentation Emclaire Financial Corp (the Corporation) is a Pennsylvania corporation and the holding company of The Farmers National Bank of Emlenton (the Bank) and Emclaire Settlement Services, LLC (the Title Company). The Corporation provides a variety of financial services to individuals and businesses through its offices in Western Pennsylvania. Its primary deposit products are checking, savings and term certificate accounts and its primary lending products are residential and commercial mortgages, commercial business loans and consumer loans. The consolidated financial statements include the accounts of the Corporation and its wholly owned subsidiaries, the Bank and the Title Company. All significant intercompany transactions and balances have been eliminated in preparing the consolidated financial statements. The accompanying unaudited consolidated financial statements for the interim periods include all adjustments, consisting of normal recurring accruals, which are necessary, in the opinion of management, to fairly reflect the Corporation’s consolidated financial position and results of operations. Additionally, these consolidated financial statements for the interim periods have been prepared in accordance with instructions for the Securities and Exchange Commission’s (SEC’s) Form 10-Q and Article 10 of Regulation S-X and therefore do not include all information or footnotes necessary for a complete presentation of financial condition, results of operations and cash flows in conformity with accounting principles generally accepted in the United States of America (GAAP). For further information, refer to the audited consolidated financial statements and footnotes thereto for the year ended December 31, 2016 , as contained in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2016 filed with the SEC. The balance sheet at December 31, 2016 has been derived from the audited financial statements at that date but does not include all the information and footnotes required by GAAP for complete financial statements. The preparation of financial statements, in conformity with GAAP, requires management to make estimates and assumptions that affect the reported amounts in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. The results of operations for interim quarterly or year-to-date periods are not necessarily indicative of the results that may be expected for the entire year or any other period. Certain amounts previously reported may have been reclassified to conform to the current year’s financial statement presentation.

Mergers and Acquisitions

Mergers and Acquisitions	9 Months Ended
	Sep. 30, 2017
Business Combinations [Abstract]
Mergers and Acquisitions	Mergers and Acquisitions On September 30, 2017, the Corporation completed the acquisition of Northern Hancock Bank & Trust Co. (Northern Hancock) in accordance with the terms of the Agreement and Plan of Merger, dated as of May 4, 2017, in exchange for 54,445 shares of common stock valued at $1.7 million and $22,000 in cash. The acquisition expanded the Corporation’s franchise into a new market and increased the Corporation’s consolidated total assets, loans and deposits. The assets and liabilities of Northern Hancock were recorded on the Corporation’s consolidated balance sheet at their estimated fair value as of September 30, 2017. 2. Mergers and Acquisitions (continued) The following table summarizes the estimated fair value of the assets acquired, liabilities assumed and consideration transferred in connection with the acquisition: (Dollar amounts in thousands) Assets acquired: Cash and cash equivalents $ 2,539 Loans receivable 18,480 Federal bank stocks 11 Accrued interest receivable 103 Premises and equipment 708 Core deposit intangible 167 Prepaid expenses and other assets 757 Total assets acquired 22,765 Liabilities assumed: Deposits 19,748 Accrued interest payable 6 Accrued expenses and other liabilities 8 Total liabilities assumed 19,762 Identifiable net assets acquired 3,003 Consideration paid: Cash 22 Common stock 1,674 Total consideration 1,696 Gain on bargain purchase $ 1,307 In connection with the acquisition, the Corporation recognized approximately $1.3 million of bargain purchase gain and a $167,000 core deposit intangible. The core deposit intangible will be amortized over a weighted average estimated life of eight years using the double declining balance method. Core deposit intangible expense is expected to be $11,000 for 2017 and is projected for the succeeding four years beginning 2018 to be $40,000 , $30,000 , $22,000 and $17,000 per year, respectively, and $47,000 in total for years after 2021. The bargain purchase gain of $1.3 million , recorded at the date of acquisition, represents the amount by which the acquisition-date fair value of the net identifiable assets acquired exceeded the fair value of the consideration transferred. While the Corporation believes that the accounting for the acquisition is complete, the fair value of the acquired assets and liabilities noted in the table may change during the provisional period, which may last up to twelve months subsequent to the acquisition date. The Corporation may obtain additional information to refine the valuation of the acquired assets and liabilities and adjust the recorded fair value, although such adjustments are not expected to be significant. The fair value of loans was estimated using discounted contractual cash flows. The book balance of the loans at the time of the acquisition was $18.5 million before considering Northern Hancocks’s allowance for loan losses, which was not carried over. The fair value disclosed above reflects a credit-related adjustment of $(566,000) and an adjustment for other factors of $537,000 . Loans evidencing credit deterioration since origination (purchased credit impaired loans) included in loans receivable were immaterial. 2. Mergers and Acquisitions (continued) For the three months ended September 30, 2017, costs related to the acquisition totaled $963,000 including system conversion costs, contract termination fees, legal fees, employee severance costs, accounting and auditing fees and other costs of $344,000 , $279,000 , $108,000 , $108,000 , $46,000 and $78,000 , respectively. For the nine months ended September 30, 2017, costs related to the acquisition totaled $1.1 million including system conversion costs, contract termination fees, legal fees, employee severance costs, accounting and auditing fees and other costs of $344,000 , $279,000 , $200,000 , $108,000 , $55,000 and $84,000 , respectively. These costs were recognized in noninterest expense as incurred.

Earnings per Common Share

Earnings per Common Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings per Common Share	Earnings per Common Share Basic earnings per common share (EPS) excludes dilution and is computed by dividing net income available to common stockholders by the weighted average number of common shares outstanding during the period. Diluted EPS includes the dilutive effect of additional potential common shares for assumed issuance of restricted stock and shares issued under stock options. The factors used in the Corporation’s earnings per common share computation follow: (Dollar amounts in thousands, except for per share amounts) For the three months ended September 30, For the nine months ended September 30, 2017 2016 2017 2016 Earnings per common share - basic Net income $ 1,707 $ 1,058 $ 3,704 $ 2,790 Average common shares outstanding 2,204,949 2,146,308 2,174,210 2,145,761 Basic earnings per common share $ 0.77 $ 0.49 $ 1.70 $ 1.30 Earnings per common share - diluted Net income $ 1,707 $ 1,058 $ 3,704 $ 2,790 Average common shares outstanding 2,204,949 2,146,308 2,174,210 2,145,761 Add: Dilutive effects of assumed issuance of restricted stock and exercise of stock options 15,471 11,965 16,437 10,141 Average shares and dilutive potential common shares 2,220,420 2,158,273 2,190,647 2,155,902 Diluted earnings per common share $ 0.77 $ 0.49 $ 1.69 $ 1.29 Stock options not considered in computing earnings per share because they were antidilutive — 57,000 — 57,000

Securities

Securities	9 Months Ended
	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Securities	Securities The following table summarizes the Corporation’s securities as of September 30, 2017 and December 31, 2016 : (Dollar amounts in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available for sale: September 30, 2017: U.S. Treasury and federal agency $ 4,543 $ — $ (29 ) $ 4,514 U.S. government sponsored entities and agencies 14,147 12 (119 ) 14,040 U.S. agency mortgage-backed securities: residential 21,615 45 (55 ) 21,605 U.S. agency collateralized mortgage obligations: residential 23,516 36 (559 ) 22,993 State and political subdivisions 26,621 140 (54 ) 26,707 Corporate debt securities 9,510 37 (18 ) 9,529 Equity securities 1,580 339 (6 ) 1,913 $ 101,532 $ 609 $ (840 ) $ 101,301 December 31, 2016: U.S. Treasury and federal agency 4,550 — (50 ) 4,500 U.S. government sponsored entities and agencies 9,186 — (188 ) 8,998 U.S. agency mortgage-backed securities: residential 25,790 32 (196 ) 25,626 U.S. agency collateralized mortgage obligations: residential 25,367 23 (684 ) 24,706 State and political subdivisions 27,853 17 (262 ) 27,608 Corporate debt securities 8,012 5 (85 ) 7,932 Equity securities 1,829 373 (12 ) 2,190 $ 102,587 $ 450 $ (1,477 ) $ 101,560 The following table summarizes scheduled maturities of the Corporation’s debt securities as of September 30, 2017 . Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Mortgage-backed securities and collateralized mortgage obligations are not due at a single maturity and are shown separately. (Dollar amounts in thousands) Available for sale Amortized Cost Fair Value Due in one year or less $ 2,852 $ 2,851 Due after one year through five years 26,440 26,380 Due after five through ten years 11,860 11,899 Due after ten years 13,669 13,660 Mortgage-backed securities: residential 21,615 21,605 Collateralized mortgage obligations: residential 23,516 22,993 $ 99,952 $ 99,388 4. Securities (continued) Information pertaining to securities with gross unrealized losses at September 30, 2017 and December 31, 2016 , aggregated by investment category and length of time that individual securities have been in a continuous loss position are included in the table below: (Dollar amounts in thousands) Less than 12 Months 12 Months or More Total Description of Securities Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss September 30, 2017: U.S. Treasury and federal agency $ 4,514 $ (29 ) $ — $ — $ 4,514 $ (29 ) U.S. government sponsored entities and agencies 9,049 (111 ) 1,992 (8 ) 11,041 (119 ) U.S. agency mortgage-backed securities: residential 6,873 (55 ) — — 6,873 (55 ) U.S. agency collateralized mortgage obligations: residential 5,229 (82 ) 15,928 (477 ) 21,157 (559 ) State and political subdivisions 5,098 (39 ) 1,646 (15 ) 6,744 (54 ) Corporate debt securities 2,986 (18 ) — — 2,986 (18 ) Equity securities — — 244 (6 ) 244 (6 ) $ 33,749 $ (334 ) $ 19,810 $ (506 ) $ 53,559 $ (840 ) December 31, 2016: U.S. Treasury and federal agency $ 4,500 $ (50 ) $ — $ — $ 4,500 $ (50 ) U.S. government sponsored entities and agencies 8,998 (188 ) — — 8,998 (188 ) U.S. agency mortgage-backed securities: residential 23,279 (196 ) — — 23,279 (196 ) U.S. agency collateralized mortgage obligations: residential 13,568 (438 ) 9,317 (246 ) 22,885 (684 ) State and political subdivisions 21,924 (262 ) — — 21,924 (262 ) Corporate debt securities 3,927 (85 ) — — 3,927 (85 ) Equity securities — — 237 (12 ) 237 (12 ) $ 76,196 $ (1,219 ) $ 9,554 $ (258 ) $ 85,750 $ (1,477 ) Gains on sales of available for sale securities for the three and nine months ended September 30 were as follows: (Dollar amounts in thousands) For the three months For the nine months ended September 30, 2017 2016 2017 2016 Proceeds $ — $ — $ 18,195 $ 6,118 Gains — — 350 83 Tax provision related to gains — — 119 28 Management evaluates securities for other-than-temporary impairment at least on a quarterly basis, and more frequently when economic, market or other conditions warrant such evaluation. Consideration is given to: (1) the length of time and the extent to which the fair value has been less than cost, (2) the financial condition and near-term prospects of the issuer, (3) whether the market decline was affected by macroeconomic conditions and (4) whether the Corporation has the intent to sell the security or more likely than not will be required to sell the security before recovery of its amortized cost basis. If the Corporation intends to sell an impaired security, or if it is more likely than not the Corporation will be required to sell the security before its anticipated recovery, the Corporation records an other-than-temporary loss in an amount equal to the entire difference between fair value and amortized cost. Otherwise, only the credit portion of the estimated loss on debt securities is recognized in earnings, with the other portion of the loss recognized in other comprehensive income. For equity securities determined to be other-than-temporarily impaired, the entire amount of impairment is recognized through earnings. 4. Securities (continued) There was one equity security in an unrealized loss position for more than 12 months as of September 30, 2017 . Equity securities owned by the Corporation consist of common stock of various financial service providers. This investment security is in an unrealized loss position as a result of the illiquid nature of the stock. The Corporation does not invest in these securities with the intent to sell them for a profit in the near term. For investments in equity securities, in addition to the general factors mentioned above for determining whether the decline in market value is other-than-temporary, the analysis of whether an equity security is other-than-temporarily impaired includes a review of the profitability, capital adequacy and other relevant information available to determine the financial position and near term prospects of each issuer. The results of analyzing the aforementioned metrics and financial fundamentals suggest recovery of amortized cost in the near future. Based on that evaluation, and given that the Corporation’s current intention is not to sell any impaired security and it is more likely than not it will not be required to sell this security before the recovery of its amortized cost basis, the Corporation does not consider the equity security with an unrealized loss as of September 30, 2017 to be other-than-temporarily impaired. During the quarter ended June 30, 2017, management determined that an other-than-temporary impairment existed on a corporate debt security due to deterioration in the credit quality of the issuer that would likely result in the non-collection of contractual principal and interest. This security was written down to its fair market value and the resulting impairment loss of $508,000 was recognized in earnings during the quarter ended June 30, 2017. After recognizing the aforementioned impairment, there were 69 debt securities in an unrealized loss position as of September 30, 2017 , of which 24 were in an unrealized loss position for more than 12 months. Of these 69 securities, 25 were government-backed collateralized mortgage obligations, 17 were state and political subdivision securities, 10 were U.S. government sponsored entity and agency securities, 6 were corporate securities, 6 were mortgage-backed securities and 5 were U.S. Treasury securities. The unrealized losses associated with these securities were not due to the deterioration in the credit quality of the issuer that would likely result in the non-collection of contractual principal and interest, but rather have been caused by a rise in interest rates from the time the securities were purchased. Based on that evaluation and other general considerations, and given that the Corporation’s current intention is not to sell any impaired securities and it is more likely than not it will not be required to sell these securities before the recovery of its amortized cost basis, the Corporation does not consider these debt securities with unrealized losses as of September 30, 2017 to be other-than-temporarily impaired.

Loans Receivable and Related Al

Loans Receivable and Related Allowance for Loan Losses	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Loans Receivable and Related Allowance for Loan Losses	Loans Receivable and Related Allowance for Loan Losses The Corporation’s loans receivable as of the respective dates are summarized as follows: (Dollar amounts in thousands) September 30, December 31, Mortgage loans on real estate: Residential first mortgages $ 226,946 $ 198,167 Home equity loans and lines of credit 91,602 91,359 Commercial real estate 192,123 166,994 510,671 456,520 Other loans: Commercial business 60,394 57,788 Consumer 9,611 6,672 70,005 64,460 Total loans, gross 580,676 520,980 Less allowance for loan losses 5,940 5,545 Total loans, net $ 574,736 $ 515,435 During the nine months ended September 30, 2017, the Corporation sold $1.1 million of residential mortgage loans and a $590,000 commercial mortgage loan that were previously classified as held for investment. Included in total loans above are net deferred costs of $1.5 million and $1.3 million at September 30, 2017 and December 31, 2016 , respectively. 5. Loans Receivable and Related Allowance for Loan Losses (continued) An allowance for loan losses (ALL) is maintained to absorb probable incurred losses from the loan portfolio. The ALL is based on management’s continuing evaluation of the risk characteristics and credit quality of the loan portfolio, assessment of current economic conditions, diversification and size of the portfolio, adequacy of collateral, past and anticipated loss experience and the amount of nonperforming loans. Management reviews the loan portfolio on a quarterly basis using a defined, consistently applied process in order to make appropriate and timely adjustments to the ALL. When information confirms all or part of specific loans to be uncollectible, these amounts are promptly charged off against the ALL. The allowance for loan losses is based on estimates and actual losses may vary from current estimates. Management believes that the granularity of the homogeneous pools and the related historical loss ratios and other qualitative factors, as well as the consistency in the application of assumptions, result in an ALL that is representative of the risk found in the components of the portfolio at any given date. At September 30, 2017 , there was no allowance for loan losses allocated to loans acquired in the April 2016 acquisition of United American Savings Bank or the September 2017 acquisition of Northern Hancock. 5. Loans Receivable and Related Allowance for Loan Losses (continued) The following table details activity in the ALL and the recorded investment by portfolio segment based on impairment method: (Dollar amounts in thousands) Residential Home Commercial Commercial Consumer Total Three months ended September 30, 2017: Allowance for loan losses: Beginning Balance $ 1,994 $ 639 $ 2,460 $ 621 $ 53 $ 5,767 Charge-offs (2 ) (33 ) (36 ) (4 ) (26 ) (101 ) Recoveries — 1 2 — 1 4 Provision 46 20 200 (21 ) 25 270 Ending Balance $ 2,038 $ 627 $ 2,626 $ 596 $ 53 $ 5,940 Nine months ended September 30, 2017: Allowance for loan losses: Beginning Balance $ 1,846 $ 633 $ 2,314 $ 700 $ 52 $ 5,545 Charge-offs (38 ) (44 ) (126 ) (14 ) (53 ) (275 ) Recoveries — 21 6 — 10 37 Provision 230 17 432 (90 ) 44 633 Ending Balance $ 2,038 $ 627 $ 2,626 $ 596 $ 53 $ 5,940 At September 30, 2017: Ending ALL balance attributable to loans: Individually evaluated for impairment $ 8 $ — $ — $ — $ — $ 8 Acquired loans collectively evaluated for impairment — — — — — — Originated loans collectively evaluated for impairment 2,030 627 2,626 596 53 5,932 Total $ 2,038 $ 627 $ 2,626 $ 596 $ 53 $ 5,940 Total loans: Individually evaluated for impairment $ 433 $ — $ 939 $ 585 $ — $ 1,957 Acquired loans collectively evaluated for impairment 28,792 3,697 28,916 2,390 2,382 66,177 Originated loans collectively evaluated for impairment 197,721 87,905 162,268 57,419 7,229 512,542 Total $ 226,946 $ 91,602 $ 192,123 $ 60,394 $ 9,611 $ 580,676 At December 31, 2016: Ending ALL balance attributable to loans: Individually evaluated for impairment $ 19 $ — $ 95 $ 6 $ — $ 120 Acquired loans collectively evaluated for impairment — — — — — — Originated loans collectively evaluated for impairment 1,827 633 2,219 694 52 5,425 Total $ 1,846 $ 633 $ 2,314 $ 700 $ 52 $ 5,545 Total loans: Individually evaluated for impairment $ 135 $ — $ 1,014 $ 684 $ — $ 1,833 Acquired loans collectively evaluated for impairment 25,024 5,225 27,492 1,182 13 58,936 Originated loans collectively evaluated for impairment 173,008 86,134 138,488 55,922 6,659 460,211 Total $ 198,167 $ 91,359 $ 166,994 $ 57,788 $ 6,672 $ 520,980 Three months ended September 30, 2016: Allowance for loan losses: Beginning Balance $ 1,696 $ 645 $ 2,118 $ 920 $ 52 $ 5,431 Charge-offs (22 ) (19 ) (11 ) (11 ) (31 ) (94 ) Recoveries — 1 2 — 6 9 Provision 58 (1 ) 10 75 26 168 Ending Balance $ 1,732 $ 626 $ 2,119 $ 984 $ 53 $ 5,514 Nine months ended September 30, 2016: Allowance for loan losses: Beginning Balance $ 1,429 $ 586 $ 2,185 $ 960 $ 45 $ 5,205 Charge-offs (63 ) (52 ) (11 ) (11 ) (45 ) (182 ) Recoveries — 2 9 — 10 21 Provision 366 90 (64 ) 35 43 470 Ending Balance $ 1,732 $ 626 $ 2,119 $ 984 $ 53 $ 5,514 5. Loans Receivable and Related Allowance for Loan Losses (continued) The following table presents impaired loans by class, segregated by those for which a specific allowance was required and those for which a specific allowance was not necessary as of September 30, 2017 : (Dollar amounts in thousands) Impaired Loans with Specific Allowance As of September 30, 2017 For the three months ended September 30, 2017 Unpaid Principal Balance Recorded Investment Related Allowance Average Recorded Investment Interest Income Recognized in Period Cash Basis Interest Recognized in Period Residential first mortgages $ 76 $ 76 $ 8 $ 76 $ — $ — Home equity and lines of credit — — — — — — Commercial real estate — — — — — — Commercial business — — — — — — Consumer — — — — — — Total $ 76 $ 76 $ 8 $ 76 $ — $ — For the nine months ended September 30, 2017 Average Recorded Investment Interest Income Recognized in Period Cash Basis Interest Recognized in Period Residential first mortgages $ 91 $ 2 $ 2 Home equity and lines of credit — — — Commercial real estate 139 — — Commercial business 147 — — Consumer — — — Total $ 377 $ 2 $ 2 Impaired Loans with No Specific Allowance As of September 30, 2017 For the three months ended September 30, 2017 Unpaid Principal Balance Recorded Investment Average Recorded Investment Interest Income Recognized in Period Cash Basis Interest Recognized in Period Residential first mortgages $ 469 $ 357 $ 362 $ 1 $ 1 Home equity and lines of credit — — — — — Commercial real estate 1,113 939 957 1 1 Commercial business 585 585 592 1 1 Consumer — — — — — Total $ 2,167 $ 1,881 $ 1,911 $ 3 $ 3 For the nine months ended September 30, 2017 Average Interest Income Cash Basis Residential first mortgages $ 274 $ 5 $ 5 Home equity and lines of credit — — — Commercial real estate 840 2 2 Commercial business 481 2 2 Consumer — — — Total $ 1,595 $ 9 $ 9 5. Loans Receivable and Related Allowance for Loan Losses (continued) The following table presents impaired loans by class, segregated by those for which a specific allowance was required and those for which a specific allowance was not necessary as of December 31, 2016 : (Dollar amounts in thousands) Impaired Loans with Specific Allowance As of December 31, 2016 For the year ended Unpaid Principal Balance Recorded Investment Related Allowance Average Recorded Investment Interest Income Recognized in Period Cash Basis Interest Recognized in Period Residential first mortgages $ 168 $ 135 $ 19 $ 119 $ 6 $ 6 Home equity and lines of credit — — — — — — Commercial real estate 557 557 95 130 23 — Commercial business 588 588 6 428 — — Consumer — — — — — — Total $ 1,313 $ 1,280 $ 120 $ 677 $ 29 $ 6 Impaired Loans with No Specific Allowance As of December 31, For the year ended Unpaid Principal Balance Recorded Investment Average Recorded Investment Interest Income Recognized in Period Cash Basis Interest Recognized in Period Residential first mortgages $ — $ — $ 23 $ — $ — Home equity and lines of credit — — — — — Commercial real estate 631 457 735 3 3 Commercial business 96 96 322 2 2 Consumer — — — — — Total $ 727 $ 553 $ 1,080 $ 5 $ 5 5. Loans Receivable and Related Allowance for Loan Losses (continued) The following table presents impaired loans by class, segregated by those for which a specific allowance was required and those for which a specific allowance was not necessary as of September 30, 2016 : (Dollar amounts in thousands) Impaired Loans with Specific Allowance As of September 30, 2016 For the three months Unpaid Principal Balance Recorded Investment Related Allowance Average Recorded Investment Interest Income Recognized in Period Cash Basis Interest Recognized in Period Residential first mortgages $ 169 $ 136 $ 20 $ 107 $ 3 $ 3 Home equity and lines of credit — — — — — — Commercial real estate — — — — — — Commercial business — — — — — — Consumer — — — — — — Total $ 169 $ 136 $ 20 $ 107 $ 3 $ 3 For the nine months ended September 30, 2016 Average Recorded Investment Interest Income Recognized in Period Cash Basis Interest Recognized in Period Residential first mortgages $ 115 $ 5 $ 5 Home equity and lines of credit — — — Commercial real estate 23 — — Commercial business 388 — — Consumer — — — Total $ 526 $ 5 $ 5 Impaired Loans with No Specific Allowance As of September 30, 2016 For the three months Unpaid Principal Balance Recorded Investment Average Recorded Investment Interest Income Recognized in Period Cash Basis Interest Recognized in Period Residential first mortgages $ — $ — $ 29 $ — $ — Home equity and lines of credit — — — — — Commercial real estate 1,190 791 807 1 1 Commercial business 675 675 682 — — Consumer — — — — — Total $ 1,865 $ 1,466 $ 1,518 $ 1 $ 1 For the nine months ended September 30, 2016 Average Interest Income Cash Basis Residential first mortgages $ 29 $ — $ — Home equity and lines of credit — — — Commercial real estate 804 2 2 Commercial business 379 1 1 Consumer — — — Total $ 1,212 $ 3 $ 3 5. Loans Receivable and Related Allowance for Loan Losses (continued) Unpaid principal balance includes any loans that have been partially charged off but not forgiven. Accrued interest is not included in the recorded investment in loans presented above or in the tables that follow based on the amounts not being material. Troubled debt restructurings (TDR). The Corporation has certain loans that have been modified in order to maximize collection of loan balances. If, for economic or legal reasons related to the customer’s financial difficulties, management grants a concession compared to the original terms and conditions of the loan that it would not have otherwise considered, the modified loan is classified as a TDR. Concessions related to TDRs generally do not include forgiveness of principal balances. The Corporation generally does not extend additional credit to borrowers with loans classified as TDRs. At September 30, 2017 and December 31, 2016 , the Corporation had $505,000 and $239,000 , respectively, of loans classified as TDRs, which are included in impaired loans above. The Corporation had allocated $8,000 and $19,000 of specific allowance for these loans at September 30, 2017 and December 31, 2016 , respectively. The Corporation did no t modify any loans as TDRs during the three month period ended September 30, 2017 . During the nine month period ended September 30, 2017 , the Corporation modified one residential mortgage loan with a recorded investment of $323,000 due to a bankruptcy order. At September 30, 2017 , the Corporation did no t have any allowance for loan losses allocated to this specific loan. The modification did not have a material impact on the Corporation’s income statement during the periods. During the three and nine month period ended September 30, 2016 , the Corporation modified one home equity loan with a recorded investment of $10,000 due to a bankruptcy order. At September 30, 2016 , the Corporation did no t have any specific allowance for loan losses allocated to this specific loan. A loan is considered to be in payment default once it is 30 days contractually past due under the modified terms. During the three and nine month periods ended September 30, 2017 and 2016, the Corporation did no t have any loans which were modified as TDRs for which there was a payment default within twelve months following the modification. Credit Quality Indicators. Management categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, historical payment experience, credit documentation, public information and current economic trends, among other factors. Commercial real estate and commercial business loans not identified as impaired are evaluated as risk rated pools of loans utilizing a risk rating practice that is supported by a quarterly special asset review. In this review process, strengths and weaknesses are identified, evaluated and documented for each criticized and classified loan and borrower, strategic action plans are developed, risk ratings are confirmed and the loan’s performance status is reviewed. Management has determined certain portions of the loan portfolio to be homogeneous in nature and assigns like reserve factors for the following loan pool types: residential real estate, home equity loans and lines of credit, and consumer installment and personal lines of credit. The reserve allocation for risk rated loan pools is developed by applying the following factors: Historic : Management utilizes a computer model to develop the historical net charge-off experience which is used to formulate the assumptions employed in the migration analysis applied to estimate losses in the portfolio. Outstanding balance and charge-off information are input into the model and historical loss migration rate assumptions are developed to apply to pass, special mention, substandard and doubtful risk rated loans. A twelve-quarter rolling weighted-average is utilized to estimate probable incurred losses in the portfolios. Qualitative : Qualitative adjustment factors for pass, special mention, substandard and doubtful ratings are developed and applied to risk rated loans to allow for: quality of lending policies and procedures; national and local economic and business conditions; changes in the nature and volume of the portfolio; experiences, ability and depth of lending management; changes in trends, volume and severity of past due, nonaccrual and classified loans and loss and recovery trends; quality of loan review systems; concentrations of credit and other external factors. 5. Loans Receivable and Related Allowance for Loan Losses (continued) Management uses the following definitions for risk ratings: Pass : Loans classified as pass typically exhibit good payment performance and have underlying borrowers with acceptable financial trends where repayment capacity is evident. These borrowers typically would have a sufficient cash flow that would allow them to weather an economic downturn and the value of any underlying collateral could withstand a moderate degree of depreciation due to economic conditions. Special Mention : Loans classified as special mention are characterized by potential weaknesses that could jeopardize repayment as contractually agreed. These loans may exhibit adverse trends such as increasing leverage, shrinking profit margins and/or deteriorating cash flows. These borrowers would inherently be more vulnerable to the application of economic pressures. Substandard : Loans classified as substandard exhibit weaknesses that are well-defined to the point that repayment is jeopardized. Typically, the Corporation is no longer adequately protected by both the apparent net worth and repayment capacity of the borrower. Doubtful : Loans classified as doubtful have advanced to the point that collection or liquidation in full, on the basis of currently ascertainable facts, conditions and value, is highly questionable or improbable. The following table presents the classes of the loan portfolio summarized by the aggregate pass and the criticized categories of special mention, substandard and doubtful within the Corporation’s internal risk rating system as of September 30, 2017 and December 31, 2016 : (Dollar amounts in thousands) Not Rated Pass Special Mention Substandard Doubtful Total September 30, 2017: Residential first mortgages $ 224,759 $ — $ — $ 2,187 $ — $ 226,946 Home equity and lines of credit 91,172 — — 430 — 91,602 Commercial real estate — 181,561 3,049 7,513 — 192,123 Commercial business — 58,487 546 1,361 — 60,394 Consumer 9,525 — — 86 — 9,611 Total $ 325,456 $ 240,048 $ 3,595 $ 11,577 $ — $ 580,676 December 31, 2016: Residential first mortgages $ 197,041 $ — $ — $ 1,126 $ — $ 198,167 Home equity and lines of credit 91,017 — — 342 — 91,359 Commercial real estate — 161,312 1,077 4,605 — 166,994 Commercial business — 52,125 4,926 737 — 57,788 Consumer 6,659 — — 13 — 6,672 Total $ 294,717 $ 213,437 $ 6,003 $ 6,823 $ — $ 520,980 5. Loans Receivable and Related Allowance for Loan Losses (continued) Management further monitors the performance and credit quality of the loan portfolio by analyzing the age of the portfolio as determined by the length of time a recorded payment is past due. The following table presents the classes of the loan portfolio summarized by the aging categories of performing loans and nonperforming loans as of September 30, 2017 and December 31, 2016 : (Dollar amounts in thousands) Performing Nonperforming Accruing Loans Not Past Due Accruing 30-59 Days Past Due Accruing 60-89 Days Past Due Accruing 90+ Days Past Due Nonaccrual Total September 30, 2017: Residential first mortgages $ 221,942 $ 2,400 $ 833 $ 900 $ 871 $ 226,946 Home equity and lines of credit 90,502 394 281 — 425 91,602 Commercial real estate 190,031 693 449 — 950 192,123 Commercial business 59,509 209 91 — 585 60,394 Consumer 9,201 262 148 — — 9,611 Total loans $ 571,185 $ 3,958 $ 1,802 $ 900 $ 2,831 $ 580,676 December 31, 2016: Residential first mortgages $ 194,830 $ 1,916 $ 295 $ — $ 1,126 $ 198,167 Home equity and lines of credit 90,557 460 — 2 340 91,359 Commercial real estate 165,318 561 — 42 1,073 166,994 Commercial business 56,972 56 34 — 726 57,788 Consumer 6,602 28 29 — 13 6,672 Total loans $ 514,279 $ 3,021 $ 358 $ 44 $ 3,278 $ 520,980 5. Loans Receivable and Related Allowance for Loan Losses (continued) The following table presents the Corporation’s nonaccrual loans by aging category as of September 30, 2017 and December 31, 2016 : (Dollar amounts in thousands) Not Past Due 30-59 Days Past Due 60-89 Days Past Due 90 Days + Past Due Total September 30, 2017: Residential first mortgages $ 373 $ 76 $ — $ 422 $ 871 Home equity and lines of credit — — — 425 425 Commercial real estate 355 — — 595 950 Commercial business 585 — — — 585 Consumer — — — — — Total loans $ 1,313 $ 76 $ — $ 1,442 $ 2,831 December 31, 2016: Residential first mortgages 72 77 — 977 1,126 Home equity and lines of credit — — — 340 340 Commercial real estate 397 — 557 119 1,073 Commercial business 631 — — 95 726 Consumer — — — 13 13 Total loans $ 1,100 $ 77 $ 557 $ 1,544 $ 3,278

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets The following table summarizes the Corporation’s acquired goodwill and intangible assets as of September 30, 2017 and December 31, 2016 : (Dollar amounts in thousands) September 30, 2017 December 31, 2016 Gross Carrying Accumulated Gross Carrying Accumulated Goodwill $ 10,288 $ — $ 10,288 $ — Core deposit intangibles 4,426 3,876 4,259 3,699 Total $ 14,714 $ 3,876 $ 14,547 $ 3,699 Goodwill resulted from four acquisitions. During 2016, the Corporation recorded $6.6 million of goodwill related to the acquisition of United American Savings Bank. Goodwill represents the excess of the total purchase price paid for the acquisitions over the fair value of the identifiable assets acquired, net of the fair value of the liabilities assumed. Goodwill is not amortized but is evaluated for impairment on an annual basis or whenever events or changes in circumstances indicate the carrying value may not be recoverable. Impairment exists when a reporting unit’s carrying value of goodwill exceeds its fair value. The Corporation has selected November 30 as the date to perform the annual impairment test. No goodwill impairment charges were recorded during 2016 or in the first nine months of 2017 . The core deposit intangible asset, resulting from three acquisitions, is amortized using the double declining balance method over a weighted average estimated life of the related deposits and is not estimated to have a significant residual value. During the three and nine month periods ending September 30, 2017 , the Corporation recorded intangible amortization expense totaling $58,000 and $177,000 , respectively, compared to $60,000 and $165,000 , respectively for the same periods in 2016 .

Stock Compensation Plan

Stock Compensation Plan	9 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Compensation Plan	Stock Compensation Plan In April 2014, the Corporation adopted the 2014 Stock Incentive Plan (the 2014 Plan), which is shareholder approved and permits the grant of restricted stock awards and options to its directors, officers and employees for up to 176,866 shares of common stock. As of September 30, 2017 , 65,783 shares of restricted stock and 88,433 stock options remain available for issuance under the plan. In addition, the Corporation’s 2007 Stock Incentive Plan and Trust (the 2007 Plan), which is shareholder approved, permitted the grant of restricted stock awards and options to its directors, officers and employees for up to 177,496 shares of common stock. As of September 30, 2017 , no additional shares of stock may be issued as the plan expired on June 20, 2017. Incentive stock options, non-incentive or compensatory stock options and share awards may be granted under the Plans. The exercise price of each option shall at least equal the market price of a share of common stock on the date of grant and have a contractual term of ten years . Options shall vest and become exercisable at the rate, to the extent and subject to such limitations as may be specified by the Corporation. Compensation cost related to share-based payment transactions must be recognized in the financial statements with measurement based upon the fair value of the equity instruments issued. A summary of option activity under the Plans as of September 30, 2017 , and changes during the period then ended is presented below: Options Weighted-Average Exercise Price Aggregate Intrinsic Value (in thousands) Weighted-Average Remaining Term (in years) Outstanding as of January 1, 2017 62,000 $ 25.71 $ 219 0.6 Granted — — — — Exercised (53,586 ) 25.67 108 — Forfeited — — — — Expired (8,414 ) 26.00 — — Outstanding as of September 30, 2017 — $ — $ — — Exercisable as of September 30, 2017 — $ — $ — — A summary of the status of the Corporation’s nonvested restricted stock awards as of September 30, 2017 , and changes during the period then ended is presented below: Shares Weighted-Average Grant-date Fair Value Nonvested at January 1, 2017 26,900 $ 25.09 Granted — — Vested — — Forfeited — — Nonvested as of September 30, 2017 26,900 $ 25.09 For the three and nine month periods ended September 30, 2017 , the Corporation recognized stock compensation expense of $55,000 and $164,000 , respectively, compared to $44,000 and $154,000 , respectively, for the same periods in 2016 . As of September 30, 2017 , there was $315,000 of total unrecognized compensation cost related to nonvested share-based compensation arrangements granted under the Plans. That cost is expected to be recognized over a weighted-average period of 1.30 years. It is the Corporation’s policy to issue shares on the vesting date for restricted stock awards. Unvested restricted stock awards do not receive dividends declared by the Corporation.

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value	Fair Value Management uses its best judgment in estimating the fair value of the Corporation’s financial instruments; however, there are inherent weaknesses in any estimation technique. Therefore, for substantially all financial instruments, the fair value estimates herein are not necessarily indicative of the amounts the Corporation could have realized in a sale transaction or exit price on the date indicated. The estimated fair value amounts have been measured as of their respective dates and have not been re-evaluated or updated for purposes of these financial statements subsequent to those respective dates. As such, the estimated fair values of these financial instruments subsequent to the respective reporting dates may be different than the amounts reported. Fair value is the exchange price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. There are three levels of inputs that may be used to measure fair value. Level 1 : Quoted prices (unadjusted) for identical assets or liabilities in active markets that the Corporation has the ability to access at the measurement date. Level 2 : Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. Level 3 : Significant unobservable inputs that reflect the Corporation’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. An asset or liability’s level is based on the lowest level of input that is significant to the fair value measurement. The Corporation used the following methods and significant assumptions to estimate the fair value of each type of financial instrument: Cash and cash equivalents – The carrying value of cash, due from banks and interest bearing deposits approximates fair value and are classified as Level 1. Securities available for sale – The fair value of all investment securities are based upon the assumptions market participants would use in pricing the security. If available, investment securities are determined by quoted market prices (Level 1). Level 1 includes U.S. Treasury, federal agency securities and certain equity securities. For investment securities where quoted market prices are not available, fair values are calculated based on market prices on similar securities (Level 2). Level 2 includes U.S. Government sponsored entities and agencies, mortgage-backed securities, collateralized mortgage obligations, state and political subdivision securities and corporate debt securities. For investment securities where quoted prices or market prices of similar securities are not available, fair values are calculated by using unobservable inputs (Level 3) and may include certain equity securities held by the Corporation. The Level 3 equity security valuations were supported by an analysis prepared by the Corporation which relies on inputs such as the security issuer’s publicly attainable financial information, multiples derived from prices in observed transactions involving comparable businesses and other market, financial and nonfinancial factors. Loans – The fair value of loans receivable was estimated based on the discounted value of the future cash flows using the current rates being offered for loans with similar terms to borrowers of similar credit quality resulting in a Level 3 classification. 8. Fair Value (continued) Impaired loans – At the time a loan is considered impaired, it is valued at the lower of cost or fair value. Impaired loans carried at fair value generally receive a specific allowance for loan losses. For collateral dependent loans, fair value is commonly based on real estate appraisals. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between the comparable sales and income data available. Such adjustments are usually significant and typically result in a Level 3 classification of the inputs for determining fair value. Non-real estate collateral may be valued using an appraisal, net book value per the borrower’s financial statements, or aging reports, adjusted or discounted based on management’s historical knowledge, changes in market conditions from the time of the valuation, and management’s expertise and knowledge of the client and client’s business, resulting in a Level 3 classification. Impaired loans are evaluated on a quarterly basis for additional impairment and adjusted accordingly. As of September 30, 2017 , the Corporation did no t have any impaired loans carried at fair value measured using the fair value of collateral, compared to loan balances of $1.2 million , net of a valuation allowance of $120,000 , at December 31, 2016 . There was no additional provision for loan losses recorded for impaired loans during the three and nine month periods ended September 30, 2017 and 2016. Other real estate owned (OREO) – Assets acquired through or instead of foreclosure are initially recorded at fair value less costs to sell when acquired, establishing a new cost basis. These assets are subsequently accounted for at lower of cost or fair value less estimated costs to sell. Fair value is commonly based on recent real estate appraisals. Management’s ongoing review of appraisal information may result in additional discounts or adjustments to the valuation based upon more recent market sales activity or more current appraisal information derived from properties of similar type and/or locale. Such adjustments are usually significant and typically result in a Level 3 classification of the inputs for determining fair value. As of September 30, 2017 and December 31, 2016, the Corporation had no OREO measured at fair value. There was no expense recorded during the three and nine month periods ended September 30, 2017 and 2016 associated with the write-down of OREO. Appraisals for both collateral-dependent impaired loans and OREO are performed by certified general appraisers (for commercial properties) or certified residential appraisers (for residential properties) whose qualifications and licenses have been reviewed by the Corporation. Once received, management reviews the assumptions and approaches utilized in the appraisal as well as the overall resulting fair value in comparison with independent data sources such as recent market data or industry-wide statistics. On an annual basis, the Corporation compares the actual selling price of OREO that has been sold to the most recent appraisal to determine what additional adjustment should be made to the appraisal value to arrive at fair value. The most recent analysis performed indicated that a discount of 10% should be applied. Federal bank stock – It is not practical to determine the fair value of federal bank stocks due to restrictions placed on its transferability. Deposits – The fair value of deposits with no stated maturity, such as non-interest bearing demand deposits, checking with interest, savings and money market accounts, is equal to the amount payable on demand resulting in either a Level 1 or Level 2 classification. The fair values of time deposits are based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently offered for deposits of similar maturities resulting in a Level 2 classification. Borrowings – The fair value of borrowings with the FHLB is estimated using discounted cash flows based on current incremental borrowing rates for similar types of borrowing arrangements resulting in a Level 2 classification. Accrued interest receivable and payable – The carrying value of accrued interest receivable and payable approximates fair value. The fair value classification is consistent with the related financial instrument. 8. Fair Value (continued) For assets measured at fair value on a recurring basis, the fair value measurements by level within the fair value hierarchy are as follows: (Dollar amounts in thousands) (Level 1) (Level 2) (Level 3) Description Total Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs September 30, 2017: U.S. Treasury and federal agency $ 4,514 $ 4,514 $ — $ — U.S. government sponsored entities and agencies 14,040 — 14,040 — U.S. agency mortgage-backed securities: residential 21,605 — 21,605 — U.S. agency collateralized mortgage obligations: residential 22,993 — 22,993 — State and political subdivision 26,707 — 26,707 — Corporate debt securities 9,529 — 9,529 — Equity securities 1,913 1,779 — 134 $ 101,301 $ 6,293 $ 94,874 $ 134 December 31, 2016: U.S. Treasury and federal agency 4,500 4,500 — — U.S. government sponsored entities and agencies 8,998 — 8,998 — U.S. agency mortgage-backed securities: residential 25,626 — 25,626 — U.S. agency collateralized mortgage obligations: residential 24,706 — 24,706 — State and political subdivisions 27,608 — 27,608 — Corporate debt securities 7,932 — 7,932 — Equity securities 2,190 2,054 — 136 $ 101,560 $ 6,554 $ 94,870 $ 136 The Corporation’s policy is to transfer assets or liabilities from one level to another when the methodology to obtain the fair value changes such that there are more or fewer unobservable inputs as of the end of the reporting period. During the three and nine month periods ended September 30, 2017 and 2016 , the Corporation had no transfers between levels. The following table presents changes in Level 3 assets measured on a recurring basis for the three and nine month periods ended September 30, 2017 and 2016 : (Dollar amounts in thousands) Three months ended September 30, Nine months ended September 30, 2017 2016 2017 2016 Balance at the beginning of the period $ 135 $ 135 $ 136 $ 74 Total gains or losses (realized/unrealized): Included in earnings — — — — Included in other comprehensive income (1 ) — (2 ) 1 Acquired — — — 60 Transfers in and/or out of Level 3 — — — — Balance at the end of the period $ 134 $ 135 $ 134 $ 135 8. Fair Value (continued) The Corporation had no assets measured at fair value on a non-recurring basis at September 30, 2017 . For assets measured at fair value on a non-recurring basis at December 31, 2016, the fair value measurements by level within the fair value hierarchy are as follows: (Dollar amounts in thousands) (Level 1) (Level 2) (Level 3) Description Total Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs December 31, 2016: Impaired residential mortgage loan $ 58 $ — $ — $ 58 Impaired commercial real estate loan 463 463 Impaired commercial business loan 582 — — 582 $ 1,103 $ — $ — $ 1,103 The following table presents quantitative information about Level 3 fair value measurements for assets measured at fair value on a non-recurring basis: (Dollar amounts in thousands) Valuation Technique(s) Unobservable Input(s) Weighted Average December 31, 2016: Impaired residential mortgage loan $ 58 Sales comparison approach Adjustment for differences between comparable sales 10 % Impaired commercial real estate loan 463 Sales comparison approach Adjustment for differences between comparable sales 37 % Impaired commercial business loan 582 Liquidation value of business assets Adjustment for differences between comparable business assets 64 % Excluded from the tables above at December 31, 2016 was an impaired residential mortgage loan totaling $58,000 classified as a TDR which was measured using a discounted cash flow methodology. 8. Fair Value (continued) The following table sets forth the carrying amount and estimated fair values of the Corporation’s financial instruments included in the consolidated balance sheet as of September 30, 2017 and December 31, 2016 : (Dollar amounts in thousands) Carrying Fair Value Measurements using: Description Amount Total Level 1 Level 2 Level 3 September 30, 2017: Financial Assets: Cash and cash equivalents $ 40,256 $ 40,256 $ 40,256 $ — $ — Securities available for sale 101,301 101,301 6,293 94,874 134 Loans, net 574,736 576,705 — — 576,705 Federal bank stock 4,906 — N/A N/A N/A Accrued interest receivable 2,228 2,228 86 405 1,737 $ 723,427 $ 720,490 $ 46,635 $ 95,279 $ 578,576 Financial Liabilities: Deposits 662,552 664,374 489,904 174,470 — Borrowed funds 41,250 41,043 — 41,043 — Accrued interest payable 399 399 17 382 — $ 704,201 $ 705,816 $ 489,921 $ 215,895 $ — Carrying Fair Value Measurements using: Amount Total Level 1 Level 2 Level 3 December 31, 2016: Financial Assets: Cash and cash equivalents $ 17,568 $ 17,568 $ 17,568 $ — $ — Securities available for sale 101,560 101,560 6,554 94,870 136 Loans held for sale 68 68 — 68 — Loans, net 515,435 519,573 — — 519,573 Federal bank stock 4,861 — N/A N/A N/A Accrued interest receivable 1,815 1,815 37 365 1,413 $ 641,307 $ 640,584 $ 24,159 $ 95,303 $ 521,122 Financial Liabilities: Deposits 584,940 582,458 423,693 158,765 — Borrowed funds 44,000 44,027 — 44,027 — Accrued interest payable 239 239 7 232 — $ 629,179 $ 626,724 $ 423,700 $ 203,024 $ —

Regulatory Matters

Regulatory Matters	9 Months Ended
	Sep. 30, 2017
Banking and Thrift [Abstract]
Regulatory Matters	Regulatory Matters Banks and bank holding companies are subject to regulatory capital requirements administered by federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations, involve quantitative measures of assets, liabilities, and certain off-balance sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators. Failure to meet capital requirements can initiate regulatory action. 9. Regulatory Matters (continued) In 2015, the Board of Governors of the Federal Reserve System amended its Small Bank Holding Company Policy Statement by increasing the policy’s consolidated assets threshold from $500 million to $1 billion. The primary benefit of being deemed a "small bank holding company" is the exemption from the requirement to maintain consolidated regulatory capital ratios; instead, regulatory capital ratios only apply at the subsidiary bank level. The final rules implementing Basel Committee on Banking Supervision’s capital guidelines for U.S. banks (BASEL III rules) became effective for the Bank on January 1, 2015 with full compliance with all of the requirements being phased in over a multi-year schedule, and fully phased in by January 1, 2019. Under the BASEL III rules, the Bank must hold a capital conservation buffer above the adequately capitalized risk-based capital ratios. The capital conservation buffer is being phased in from 0.0% for 2015 to 2.50% by 2019. The capital conservation buffer for 2017 is 1.25% and was 0.625% for 2016. The net unrealized gain or loss on available for sale securities is not included in computing regulatory capital. Management believes as of September 30, 2017 , the Bank meets all capital adequacy requirements to which they are subject. Prompt corrective action regulations provide five classifications: well capitalized, adequately capitalized, undercapitalized, significantly undercapitalized and critically undercapitalized, although these terms are not used to represent overall financial condition. If adequately capitalized, regulatory approval is required to accept brokered deposits. If undercapitalized, capital distributions are limited, as is asset growth and expansion, and capital restoration plans are required. At September 30, 2017 , the most recent regulatory notifications categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. There are no conditions or events since that notification that management believes have changed the institution's category. The following table sets forth certain information concerning the Bank’s regulatory capital as of the dates presented. The capital adequacy ratios disclosed below are exclusive of the capital conservation buffer. (Dollar amounts in thousands) September 30, 2017 December 31, 2016 Amount Ratio Amount Ratio Total capital to risk-weighted assets: Actual $ 63,229 12.39 % $ 58,605 12.69 % For capital adequacy purposes 40,818 8.00 % 36,945 8.00 % To be well capitalized 51,022 10.00 % 46,181 10.00 % Tier 1 capital to risk-weighted assets: Actual $ 57,282 11.23 % $ 53,050 11.49 % For capital adequacy purposes 30,613 6.00 % 27,709 6.00 % To be well capitalized 40,818 8.00 % 36,945 8.00 % Common Equity Tier 1 capital to risk-weighted assets: Actual $ 57,282 11.23 % $ 53,050 11.49 % For capital adequacy purposes 22,960 4.50 % 20,781 4.50 % To be well capitalized 33,165 6.50 % 30,018 6.50 % Tier 1 capital to average assets: Actual $ 57,282 7.82 % $ 53,050 7.84 % For capital adequacy purposes 29,307 4.00 % 27,081 4.00 % To be well capitalized 36,634 5.00 % 33,852 5.00 %

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) The following tables summarize the changes within each classification of accumulated other comprehensive income (loss), net of tax, for the three months ended September 30, 2017 and 2016 and summarizes the significant amounts reclassified out of each component of accumulated other comprehensive income: (Dollar amounts in thousands) Unrealized Gains and Losses on Available-for-Sale Securities Defined Benefit Pension Items Totals Accumulated Other Comprehensive Income (Loss) at July 1, 2017 $ (307 ) $ (3,812 ) $ (4,119 ) Other comprehensive income before reclassification 153 — 153 Amounts reclassified from accumulated other comprehensive income (loss) — — — Net current period other comprehensive income 153 — 153 Accumulated Other Comprehensive Income (Loss) at September 30, 2017 $ (154 ) $ (3,812 ) $ (3,966 ) (Dollar amounts in thousands) Details about Accumulated Other Comprehensive Loss Components Amount Reclassified Affected Line Item in the Statement Where Net Income is Presented Unrealized gains and losses on available-for-sale securities $ — Net gain on sale of available-for-sale securities Unrealized gains and losses on available-for-sale securities — Other than temporary impairment losses — Provision for income taxes Total reclassifications for the period $ — Net of tax (Dollar amounts in thousands) Unrealized Gains and Losses on Available-for-Sale Securities Defined Benefit Pension Items Totals Accumulated Other Comprehensive Income (Loss) at July 1, 2016 $ 1,038 $ (3,514 ) $ (2,476 ) Other comprehensive income before reclassification (179 ) — (179 ) Amounts reclassified from accumulated other comprehensive income (loss) — — — Net current period other comprehensive income (179 ) — (179 ) Accumulated Other Comprehensive Income (Loss) at September 30, 2016 $ 859 $ (3,514 ) $ (2,655 ) 10. Accumulated Other Comprehensive Income (Loss) (continued) (Dollar amounts in thousands) Details about Accumulated Other Comprehensive Loss Components Amount Reclassified Affected Line Item in the Statement Where Net Income is Presented Unrealized gains and losses on available-for-sale securities $ — Net gain on sale of available-for-sale securities — Provision for income taxes Total reclassifications for the period $ — Net of tax The following tables summarize the changes within each classification of accumulated other comprehensive income (loss), net of tax, for the nine months ended September 30, 2017 and 2016 and summarizes the significant amounts reclassified out of each component of accumulated other comprehensive income: (Dollar amounts in thousands) Unrealized Gains and Losses on Available-for-Sale Securities Defined Benefit Pension Items Totals Accumulated Other Comprehensive Income (Loss) at January 1, 2017 $ (679 ) $ (3,812 ) $ (4,491 ) Other comprehensive income before reclassification 421 — 421 Amounts reclassified from accumulated other comprehensive income (loss) 104 — 104 Net current period other comprehensive income 525 — 525 Accumulated Other Comprehensive Income (Loss) at September 30, 2017 $ (154 ) $ (3,812 ) $ (3,966 ) (Dollar amounts in thousands) Details about Accumulated Other Comprehensive Loss Components Amount Reclassified Affected Line Item in the Statement Where Net Income is Presented Unrealized gains and losses on available-for-sale securities $ 350 Net gain on sale of available-for-sale securities Unrealized gains and losses on available-for-sale securities (508 ) Other than temporary impairment losses 54 Provision for income taxes Total reclassifications for the period $ (104 ) Net of tax 10. Accumulated Other Comprehensive Income (Loss) (continued) (Dollar amounts in thousands) Unrealized Gains and Losses on Available-for-Sale Securities Defined Benefit Pension Items Totals Accumulated Other Comprehensive Income (Loss) at January 1, 2016 $ (248 ) $ (3,514 ) $ (3,762 ) Other comprehensive income before reclassification 1,162 — 1,162 Amounts reclassified from accumulated other comprehensive income (loss) (55 ) — (55 ) Net current period other comprehensive income 1,107 — 1,107 Accumulated Other Comprehensive Income (Loss) at September 30, 2016 $ 859 $ (3,514 ) $ (2,655 ) (Dollar amounts in thousands) Details about Accumulated Other Comprehensive Loss Components Amount Reclassified from Accumulated Other Comprehensive Income For the nine months ended September 30, 2016 Affected Line Item in the Statement Where Net Income is Presented Unrealized gains and losses on available-for-sale securities $ 83 Net gain on sale of available-for-sale securities (28 ) Provision for income taxes Total reclassifications for the period $ 55 Net of tax

Recent Accounting Pronouncement

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2017
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements Newly Issued Not Yet Effective Accounting Standards In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-9 “Revenue from Contracts with Customers”. ASU 2014-9 provides guidance that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and services. In August 2015, the FASB issued ASU 2015-14, which defers the effective date of this standard to annual and interim periods beginning after December 15, 2017; however, early adoption is permitted for annual and interim reporting periods beginning after December 15, 2016. ASU 2014-9 is not expected to have a significant impact on the Corporation's interest income, as our financial instruments are not within the scope of this standard, or fee-based income. We will continue to evaluate the impact of this standard and we do not anticipate this will have a material impact on the Corporation's financial statements. In January 2016, the FASB issued ASU 2016-1 “Recognition and Measurement of Financial Assets and Financial Liabilities”. ASU 2016-1 revises the accounting for the classification and measurement of investments in equity securities and revises the presentation of certain fair value changes for financial liabilities measured at fair value. For equity securities, the guidance in ASU 2016-1 requires equity investments to be measured at fair value with changes in fair value recognized in net income. For financial liabilities that are measured at fair value in accordance with the fair value option, the guidance requires presenting in other comprehensive income the change in fair value that relates to a change in instrument-specific credit risk. ASU 2016-1 also eliminates the disclosure assumptions used to estimate fair value for financial instruments measured at amortized cost and requires disclosure of an exit price notion in determining the fair value of financial instruments measured at amortized cost. ASU 2016-1 is effective for interim and annual periods beginning after December 15, 2017. ASU 2016-1 is not expected to have a significant impact on the Corporation's financial statements. 11. Recent Accounting Pronouncements (continued) In February 2016, the FASB issued ASU 2016-02 "Leases". This ASU requires lessees to record most leases on their balance sheet but recognize expenses in the income statement in a manner similar to current accounting treatment. This ASU changes the guidance on sale-leaseback transactions, initial direct costs and lease execution costs, and, for lessors, modifies the classification criteria and the accounting for sales-type and direct financing leases. ASU 2016-02 is effective for annual periods beginning after December 15, 2018, and interim periods therein. Entities are required to use a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements. The Corporation is currently evaluating the impact of ASU 2016-02 on its financial statements. In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments”. ASU 2016-13 significantly changes the way impairment of financial instruments is recognized by requiring immediate recognition of estimated credit losses expected to occur over the remaining life of the financial instruments. The main provisions of the guidance include (1) replacing the “incurred loss” approach under current GAAP with an “expected loss” model for instruments measured at amortized cost, (2) requiring entities to record an allowance for available-for-sale debt securities rather than reduce the carrying amount of the investments, as is required by the other-than-temporary impairment model under current GAAP, and (3) a simplified accounting model for purchased credit-impaired debt securities and loans. The ASU is effective for interim and annual reporting periods beginning after December 15, 2019, although early adoption is permitted. Management is currently in the developmental stages of collecting available historical information in order to assess the expected credit losses and determine the impact of the adoption of ASU 2016-13 on the Corporation's financial statements. In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (a consensus of the FASB Emerging Issues Task Force” . ASU 2016-15 clarifies the presentation of specific types of cash flow receipts and payments, including the payment of debt prepayment or debt extinguishment costs, contingent consideration cash payments paid subsequent to the acquisition date and proceeds from settlement of BOLI policies. This guidance is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years, and is to be applied under a retrospective approach, if practicable. The Corporation is evaluating the impact of ASU 2016-15 on its financial statements and disclosures. In January 2017, FASB ASU 2017-04, "Simplifying the Test for Goodwill Impairment". This ASU simplifies the measurement of goodwill by eliminating Step 2 from the goodwill impairment test. Instead, under this amendment, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss should not exceed the total amount of goodwill allocated to that reporting unit. The amendments are effective for public business entities for the first interim and annual reporting periods beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Corporation has goodwill from prior business combinations and performs an annual impairment test or more frequently if changes or circumstances occur that would more likely than not reduce the fair value of the reporting unit below its carrying value. The Corporation's most recent annual impairment assessment determined that the Corporation's goodwill was not impaired. Although the Corporation cannot anticipate future goodwill impairment assessments, based on the most recent assessment it is unlikely that an impairment amount would need to be calculated and, therefore, does not anticipate a material impact from these amendments to the Corporation's financial position and results of operations. The current accounting policies and processes are not anticipated to change, except for the elimination of the Step 2 analysis. In March 2017, the FASB issued ASU 2017-07, "Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost." The amendments in this update require that an employer disaggregate the service cost component from the other components of net benefit cost. The amendments also provide explicit guidance on how to present the service cost component and the other components of net benefit cost in the income statement and allow only the service cost component of net benefit cost to be eligible for capitalization. The amendments in this update improve the consistency, transparency, and usefulness of financial information to users that have communicated that the service cost component generally is analyzed differently from the other components of net benefit cost. The amendments in this update become effective for annual periods and interim periods within those annual periods beginning after December 15, 2017. The Corporation is currently evaluating the impact of adopting the new guidance on the consolidated financial statements, but it is not expected to have a material impact. 11. Recent Accounting Pronouncements (continued) In March 2017, the FASB issued ASU 2017-08, “Receivable - Nonrefundable Fees and Other Costs (Subtopic 310-20) Premium Amortization on Purchased Callable Debt Securities.” ASU 2017-08 amends guidance on the amortization period of premiums on certain purchased callable debt securities to shorten the amortization period of premiums on certain purchased callable debt securities to the earliest call date. The amendments are effective for public business entities for fiscal years beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020. Early adoption is permitted, including adoption in an interim period. The Corporation is currently evaluating the potential impact of ASU 2016-02 on its financial statements and disclosures. In August 2017, the FASB issued ASU 2017-12, "Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities." The amendments in this Update are to better reflect the economic results of hedging in the financial statements along with simplification of certain hedge accounting requirements. Specifically, the entire change in the fair value of the hedging instrument is required to be presented in the same income statement line as and in the same period that the earnings effect of the hedged item is recognized. Therefore, hedge ineffectiveness will not be reported separately or in a different period. In addition, hedge effectiveness can be determined qualitatively in periods following inception. The amendments permit an entity to measure the change in fair value of the hedged item on the basis of the benchmark rate component. They also permit an entity to measure the hedged item in a partial-term fair value hedge of interest rate risk by assuming the hedged item has a term that reflects only the designated cash flows being hedged. For a closed portfolio of prepayable financial assets, an entity is permitted to designate the amount that is not expected to be affected by prepayments or defaults as the hedged item. For public business entities, the new guidance is effective for fiscal years beginning after December 15, 2018, and interim periods therein. Early adoption is permitted. The Corporation is currently evaluating the impact of adopting the new guidance on the consolidated financial statements, but it is not expected to have a material impact. Adoption of New Accounting Policies In the first quarter of 2017, the Corporation adopted ASU 2016-09, "Improvements to Employee Share-Based Payment Accounting". ASU 2016-09 simplifies certain aspects of the accounting for employee share-based payment transactions, including the income tax consequences, classifications of awards either as equity or liabilities, and classifications on the statement of cash flows. This ASU did not have a material impact on the Corporation's financial statements and disclosures.

Recent Accounting Pronounceme20

Recent Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2017
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements Newly Issued Not Yet Effective Accounting Standards In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-9 “Revenue from Contracts with Customers”. ASU 2014-9 provides guidance that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and services. In August 2015, the FASB issued ASU 2015-14, which defers the effective date of this standard to annual and interim periods beginning after December 15, 2017; however, early adoption is permitted for annual and interim reporting periods beginning after December 15, 2016. ASU 2014-9 is not expected to have a significant impact on the Corporation's interest income, as our financial instruments are not within the scope of this standard, or fee-based income. We will continue to evaluate the impact of this standard and we do not anticipate this will have a material impact on the Corporation's financial statements. In January 2016, the FASB issued ASU 2016-1 “Recognition and Measurement of Financial Assets and Financial Liabilities”. ASU 2016-1 revises the accounting for the classification and measurement of investments in equity securities and revises the presentation of certain fair value changes for financial liabilities measured at fair value. For equity securities, the guidance in ASU 2016-1 requires equity investments to be measured at fair value with changes in fair value recognized in net income. For financial liabilities that are measured at fair value in accordance with the fair value option, the guidance requires presenting in other comprehensive income the change in fair value that relates to a change in instrument-specific credit risk. ASU 2016-1 also eliminates the disclosure assumptions used to estimate fair value for financial instruments measured at amortized cost and requires disclosure of an exit price notion in determining the fair value of financial instruments measured at amortized cost. ASU 2016-1 is effective for interim and annual periods beginning after December 15, 2017. ASU 2016-1 is not expected to have a significant impact on the Corporation's financial statements. 11. Recent Accounting Pronouncements (continued) In February 2016, the FASB issued ASU 2016-02 "Leases". This ASU requires lessees to record most leases on their balance sheet but recognize expenses in the income statement in a manner similar to current accounting treatment. This ASU changes the guidance on sale-leaseback transactions, initial direct costs and lease execution costs, and, for lessors, modifies the classification criteria and the accounting for sales-type and direct financing leases. ASU 2016-02 is effective for annual periods beginning after December 15, 2018, and interim periods therein. Entities are required to use a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements. The Corporation is currently evaluating the impact of ASU 2016-02 on its financial statements. In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments”. ASU 2016-13 significantly changes the way impairment of financial instruments is recognized by requiring immediate recognition of estimated credit losses expected to occur over the remaining life of the financial instruments. The main provisions of the guidance include (1) replacing the “incurred loss” approach under current GAAP with an “expected loss” model for instruments measured at amortized cost, (2) requiring entities to record an allowance for available-for-sale debt securities rather than reduce the carrying amount of the investments, as is required by the other-than-temporary impairment model under current GAAP, and (3) a simplified accounting model for purchased credit-impaired debt securities and loans. The ASU is effective for interim and annual reporting periods beginning after December 15, 2019, although early adoption is permitted. Management is currently in the developmental stages of collecting available historical information in order to assess the expected credit losses and determine the impact of the adoption of ASU 2016-13 on the Corporation's financial statements. In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (a consensus of the FASB Emerging Issues Task Force” . ASU 2016-15 clarifies the presentation of specific types of cash flow receipts and payments, including the payment of debt prepayment or debt extinguishment costs, contingent consideration cash payments paid subsequent to the acquisition date and proceeds from settlement of BOLI policies. This guidance is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years, and is to be applied under a retrospective approach, if practicable. The Corporation is evaluating the impact of ASU 2016-15 on its financial statements and disclosures. In January 2017, FASB ASU 2017-04, "Simplifying the Test for Goodwill Impairment". This ASU simplifies the measurement of goodwill by eliminating Step 2 from the goodwill impairment test. Instead, under this amendment, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss should not exceed the total amount of goodwill allocated to that reporting unit. The amendments are effective for public business entities for the first interim and annual reporting periods beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Corporation has goodwill from prior business combinations and performs an annual impairment test or more frequently if changes or circumstances occur that would more likely than not reduce the fair value of the reporting unit below its carrying value. The Corporation's most recent annual impairment assessment determined that the Corporation's goodwill was not impaired. Although the Corporation cannot anticipate future goodwill impairment assessments, based on the most recent assessment it is unlikely that an impairment amount would need to be calculated and, therefore, does not anticipate a material impact from these amendments to the Corporation's financial position and results of operations. The current accounting policies and processes are not anticipated to change, except for the elimination of the Step 2 analysis. In March 2017, the FASB issued ASU 2017-07, "Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost." The amendments in this update require that an employer disaggregate the service cost component from the other components of net benefit cost. The amendments also provide explicit guidance on how to present the service cost component and the other components of net benefit cost in the income statement and allow only the service cost component of net benefit cost to be eligible for capitalization. The amendments in this update improve the consistency, transparency, and usefulness of financial information to users that have communicated that the service cost component generally is analyzed differently from the other components of net benefit cost. The amendments in this update become effective for annual periods and interim periods within those annual periods beginning after December 15, 2017. The Corporation is currently evaluating the impact of adopting the new guidance on the consolidated financial statements, but it is not expected to have a material impact. 11. Recent Accounting Pronouncements (continued) In March 2017, the FASB issued ASU 2017-08, “Receivable - Nonrefundable Fees and Other Costs (Subtopic 310-20) Premium Amortization on Purchased Callable Debt Securities.” ASU 2017-08 amends guidance on the amortization period of premiums on certain purchased callable debt securities to shorten the amortization period of premiums on certain purchased callable debt securities to the earliest call date. The amendments are effective for public business entities for fiscal years beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020. Early adoption is permitted, including adoption in an interim period. The Corporation is currently evaluating the potential impact of ASU 2016-02 on its financial statements and disclosures. In August 2017, the FASB issued ASU 2017-12, "Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities." The amendments in this Update are to better reflect the economic results of hedging in the financial statements along with simplification of certain hedge accounting requirements. Specifically, the entire change in the fair value of the hedging instrument is required to be presented in the same income statement line as and in the same period that the earnings effect of the hedged item is recognized. Therefore, hedge ineffectiveness will not be reported separately or in a different period. In addition, hedge effectiveness can be determined qualitatively in periods following inception. The amendments permit an entity to measure the change in fair value of the hedged item on the basis of the benchmark rate component. They also permit an entity to measure the hedged item in a partial-term fair value hedge of interest rate risk by assuming the hedged item has a term that reflects only the designated cash flows being hedged. For a closed portfolio of prepayable financial assets, an entity is permitted to designate the amount that is not expected to be affected by prepayments or defaults as the hedged item. For public business entities, the new guidance is effective for fiscal years beginning after December 15, 2018, and interim periods therein. Early adoption is permitted. The Corporation is currently evaluating the impact of adopting the new guidance on the consolidated financial statements, but it is not expected to have a material impact. Adoption of New Accounting Policies In the first quarter of 2017, the Corporation adopted ASU 2016-09, "Improvements to Employee Share-Based Payment Accounting". ASU 2016-09 simplifies certain aspects of the accounting for employee share-based payment transactions, including the income tax consequences, classifications of awards either as equity or liabilities, and classifications on the statement of cash flows. This ASU did not have a material impact on the Corporation's financial statements and disclosures.

Mergers and Acquisitions (Table

Mergers and Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2017
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table summarizes the estimated fair value of the assets acquired, liabilities assumed and consideration transferred in connection with the acquisition: (Dollar amounts in thousands) Assets acquired: Cash and cash equivalents $ 2,539 Loans receivable 18,480 Federal bank stocks 11 Accrued interest receivable 103 Premises and equipment 708 Core deposit intangible 167 Prepaid expenses and other assets 757 Total assets acquired 22,765 Liabilities assumed: Deposits 19,748 Accrued interest payable 6 Accrued expenses and other liabilities 8 Total liabilities assumed 19,762 Identifiable net assets acquired 3,003 Consideration paid: Cash 22 Common stock 1,674 Total consideration 1,696 Gain on bargain purchase $ 1,307

Earnings per Common Share (Tabl

Earnings per Common Share (Tables)	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The factors used in the Corporation’s earnings per common share computation follow: (Dollar amounts in thousands, except for per share amounts) For the three months ended September 30, For the nine months ended September 30, 2017 2016 2017 2016 Earnings per common share - basic Net income $ 1,707 $ 1,058 $ 3,704 $ 2,790 Average common shares outstanding 2,204,949 2,146,308 2,174,210 2,145,761 Basic earnings per common share $ 0.77 $ 0.49 $ 1.70 $ 1.30 Earnings per common share - diluted Net income $ 1,707 $ 1,058 $ 3,704 $ 2,790 Average common shares outstanding 2,204,949 2,146,308 2,174,210 2,145,761 Add: Dilutive effects of assumed issuance of restricted stock and exercise of stock options 15,471 11,965 16,437 10,141 Average shares and dilutive potential common shares 2,220,420 2,158,273 2,190,647 2,155,902 Diluted earnings per common share $ 0.77 $ 0.49 $ 1.69 $ 1.29 Stock options not considered in computing earnings per share because they were antidilutive — 57,000 — 57,000

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Schedule of Classification of Available for Sale Securities Investment	The following table summarizes the Corporation’s securities as of September 30, 2017 and December 31, 2016 : (Dollar amounts in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available for sale: September 30, 2017: U.S. Treasury and federal agency $ 4,543 $ — $ (29 ) $ 4,514 U.S. government sponsored entities and agencies 14,147 12 (119 ) 14,040 U.S. agency mortgage-backed securities: residential 21,615 45 (55 ) 21,605 U.S. agency collateralized mortgage obligations: residential 23,516 36 (559 ) 22,993 State and political subdivisions 26,621 140 (54 ) 26,707 Corporate debt securities 9,510 37 (18 ) 9,529 Equity securities 1,580 339 (6 ) 1,913 $ 101,532 $ 609 $ (840 ) $ 101,301 December 31, 2016: U.S. Treasury and federal agency 4,550 — (50 ) 4,500 U.S. government sponsored entities and agencies 9,186 — (188 ) 8,998 U.S. agency mortgage-backed securities: residential 25,790 32 (196 ) 25,626 U.S. agency collateralized mortgage obligations: residential 25,367 23 (684 ) 24,706 State and political subdivisions 27,853 17 (262 ) 27,608 Corporate debt securities 8,012 5 (85 ) 7,932 Equity securities 1,829 373 (12 ) 2,190 $ 102,587 $ 450 $ (1,477 ) $ 101,560
Schedule of Contractual Maturities of Available for Sale Securities Debt Maturities	The following table summarizes scheduled maturities of the Corporation’s debt securities as of September 30, 2017 . Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Mortgage-backed securities and collateralized mortgage obligations are not due at a single maturity and are shown separately. (Dollar amounts in thousands) Available for sale Amortized Cost Fair Value Due in one year or less $ 2,852 $ 2,851 Due after one year through five years 26,440 26,380 Due after five through ten years 11,860 11,899 Due after ten years 13,669 13,660 Mortgage-backed securities: residential 21,615 21,605 Collateralized mortgage obligations: residential 23,516 22,993 $ 99,952 $ 99,388
Schedule of Unrealized Loss on Investments	Information pertaining to securities with gross unrealized losses at September 30, 2017 and December 31, 2016 , aggregated by investment category and length of time that individual securities have been in a continuous loss position are included in the table below: (Dollar amounts in thousands) Less than 12 Months 12 Months or More Total Description of Securities Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss September 30, 2017: U.S. Treasury and federal agency $ 4,514 $ (29 ) $ — $ — $ 4,514 $ (29 ) U.S. government sponsored entities and agencies 9,049 (111 ) 1,992 (8 ) 11,041 (119 ) U.S. agency mortgage-backed securities: residential 6,873 (55 ) — — 6,873 (55 ) U.S. agency collateralized mortgage obligations: residential 5,229 (82 ) 15,928 (477 ) 21,157 (559 ) State and political subdivisions 5,098 (39 ) 1,646 (15 ) 6,744 (54 ) Corporate debt securities 2,986 (18 ) — — 2,986 (18 ) Equity securities — — 244 (6 ) 244 (6 ) $ 33,749 $ (334 ) $ 19,810 $ (506 ) $ 53,559 $ (840 ) December 31, 2016: U.S. Treasury and federal agency $ 4,500 $ (50 ) $ — $ — $ 4,500 $ (50 ) U.S. government sponsored entities and agencies 8,998 (188 ) — — 8,998 (188 ) U.S. agency mortgage-backed securities: residential 23,279 (196 ) — — 23,279 (196 ) U.S. agency collateralized mortgage obligations: residential 13,568 (438 ) 9,317 (246 ) 22,885 (684 ) State and political subdivisions 21,924 (262 ) — — 21,924 (262 ) Corporate debt securities 3,927 (85 ) — — 3,927 (85 ) Equity securities — — 237 (12 ) 237 (12 ) $ 76,196 $ (1,219 ) $ 9,554 $ (258 ) $ 85,750 $ (1,477 )
Available-for-sale Securities	Gains on sales of available for sale securities for the three and nine months ended September 30 were as follows: (Dollar amounts in thousands) For the three months For the nine months ended September 30, 2017 2016 2017 2016 Proceeds $ — $ — $ 18,195 $ 6,118 Gains — — 350 83 Tax provision related to gains — — 119 28

Loans Receivable and Related 24

Loans Receivable and Related Allowance for Loan Losses (Tables)	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Schedule of Classification of Loans Receivable	The Corporation’s loans receivable as of the respective dates are summarized as follows: (Dollar amounts in thousands) September 30, December 31, Mortgage loans on real estate: Residential first mortgages $ 226,946 $ 198,167 Home equity loans and lines of credit 91,602 91,359 Commercial real estate 192,123 166,994 510,671 456,520 Other loans: Commercial business 60,394 57,788 Consumer 9,611 6,672 70,005 64,460 Total loans, gross 580,676 520,980 Less allowance for loan losses 5,940 5,545 Total loans, net $ 574,736 $ 515,435
Allowance for Credit Losses on Financing Receivables	The following table details activity in the ALL and the recorded investment by portfolio segment based on impairment method: (Dollar amounts in thousands) Residential Home Commercial Commercial Consumer Total Three months ended September 30, 2017: Allowance for loan losses: Beginning Balance $ 1,994 $ 639 $ 2,460 $ 621 $ 53 $ 5,767 Charge-offs (2 ) (33 ) (36 ) (4 ) (26 ) (101 ) Recoveries — 1 2 — 1 4 Provision 46 20 200 (21 ) 25 270 Ending Balance $ 2,038 $ 627 $ 2,626 $ 596 $ 53 $ 5,940 Nine months ended September 30, 2017: Allowance for loan losses: Beginning Balance $ 1,846 $ 633 $ 2,314 $ 700 $ 52 $ 5,545 Charge-offs (38 ) (44 ) (126 ) (14 ) (53 ) (275 ) Recoveries — 21 6 — 10 37 Provision 230 17 432 (90 ) 44 633 Ending Balance $ 2,038 $ 627 $ 2,626 $ 596 $ 53 $ 5,940 At September 30, 2017: Ending ALL balance attributable to loans: Individually evaluated for impairment $ 8 $ — $ — $ — $ — $ 8 Acquired loans collectively evaluated for impairment — — — — — — Originated loans collectively evaluated for impairment 2,030 627 2,626 596 53 5,932 Total $ 2,038 $ 627 $ 2,626 $ 596 $ 53 $ 5,940 Total loans: Individually evaluated for impairment $ 433 $ — $ 939 $ 585 $ — $ 1,957 Acquired loans collectively evaluated for impairment 28,792 3,697 28,916 2,390 2,382 66,177 Originated loans collectively evaluated for impairment 197,721 87,905 162,268 57,419 7,229 512,542 Total $ 226,946 $ 91,602 $ 192,123 $ 60,394 $ 9,611 $ 580,676 At December 31, 2016: Ending ALL balance attributable to loans: Individually evaluated for impairment $ 19 $ — $ 95 $ 6 $ — $ 120 Acquired loans collectively evaluated for impairment — — — — — — Originated loans collectively evaluated for impairment 1,827 633 2,219 694 52 5,425 Total $ 1,846 $ 633 $ 2,314 $ 700 $ 52 $ 5,545 Total loans: Individually evaluated for impairment $ 135 $ — $ 1,014 $ 684 $ — $ 1,833 Acquired loans collectively evaluated for impairment 25,024 5,225 27,492 1,182 13 58,936 Originated loans collectively evaluated for impairment 173,008 86,134 138,488 55,922 6,659 460,211 Total $ 198,167 $ 91,359 $ 166,994 $ 57,788 $ 6,672 $ 520,980 Three months ended September 30, 2016: Allowance for loan losses: Beginning Balance $ 1,696 $ 645 $ 2,118 $ 920 $ 52 $ 5,431 Charge-offs (22 ) (19 ) (11 ) (11 ) (31 ) (94 ) Recoveries — 1 2 — 6 9 Provision 58 (1 ) 10 75 26 168 Ending Balance $ 1,732 $ 626 $ 2,119 $ 984 $ 53 $ 5,514 Nine months ended September 30, 2016: Allowance for loan losses: Beginning Balance $ 1,429 $ 586 $ 2,185 $ 960 $ 45 $ 5,205 Charge-offs (63 ) (52 ) (11 ) (11 ) (45 ) (182 ) Recoveries — 2 9 — 10 21 Provision 366 90 (64 ) 35 43 470 Ending Balance $ 1,732 $ 626 $ 2,119 $ 984 $ 53 $ 5,514
Schedule of Impaired Loans with and without a Specific Allowance	The following table presents impaired loans by class, segregated by those for which a specific allowance was required and those for which a specific allowance was not necessary as of September 30, 2017 : (Dollar amounts in thousands) Impaired Loans with Specific Allowance As of September 30, 2017 For the three months ended September 30, 2017 Unpaid Principal Balance Recorded Investment Related Allowance Average Recorded Investment Interest Income Recognized in Period Cash Basis Interest Recognized in Period Residential first mortgages $ 76 $ 76 $ 8 $ 76 $ — $ — Home equity and lines of credit — — — — — — Commercial real estate — — — — — — Commercial business — — — — — — Consumer — — — — — — Total $ 76 $ 76 $ 8 $ 76 $ — $ — For the nine months ended September 30, 2017 Average Recorded Investment Interest Income Recognized in Period Cash Basis Interest Recognized in Period Residential first mortgages $ 91 $ 2 $ 2 Home equity and lines of credit — — — Commercial real estate 139 — — Commercial business 147 — — Consumer — — — Total $ 377 $ 2 $ 2 Impaired Loans with No Specific Allowance As of September 30, 2017 For the three months ended September 30, 2017 Unpaid Principal Balance Recorded Investment Average Recorded Investment Interest Income Recognized in Period Cash Basis Interest Recognized in Period Residential first mortgages $ 469 $ 357 $ 362 $ 1 $ 1 Home equity and lines of credit — — — — — Commercial real estate 1,113 939 957 1 1 Commercial business 585 585 592 1 1 Consumer — — — — — Total $ 2,167 $ 1,881 $ 1,911 $ 3 $ 3 For the nine months ended September 30, 2017 Average Interest Income Cash Basis Residential first mortgages $ 274 $ 5 $ 5 Home equity and lines of credit — — — Commercial real estate 840 2 2 Commercial business 481 2 2 Consumer — — — Total $ 1,595 $ 9 $ 9 5. Loans Receivable and Related Allowance for Loan Losses (continued) The following table presents impaired loans by class, segregated by those for which a specific allowance was required and those for which a specific allowance was not necessary as of December 31, 2016 : (Dollar amounts in thousands) Impaired Loans with Specific Allowance As of December 31, 2016 For the year ended Unpaid Principal Balance Recorded Investment Related Allowance Average Recorded Investment Interest Income Recognized in Period Cash Basis Interest Recognized in Period Residential first mortgages $ 168 $ 135 $ 19 $ 119 $ 6 $ 6 Home equity and lines of credit — — — — — — Commercial real estate 557 557 95 130 23 — Commercial business 588 588 6 428 — — Consumer — — — — — — Total $ 1,313 $ 1,280 $ 120 $ 677 $ 29 $ 6 Impaired Loans with No Specific Allowance As of December 31, For the year ended Unpaid Principal Balance Recorded Investment Average Recorded Investment Interest Income Recognized in Period Cash Basis Interest Recognized in Period Residential first mortgages $ — $ — $ 23 $ — $ — Home equity and lines of credit — — — — — Commercial real estate 631 457 735 3 3 Commercial business 96 96 322 2 2 Consumer — — — — — Total $ 727 $ 553 $ 1,080 $ 5 $ 5 5. Loans Receivable and Related Allowance for Loan Losses (continued) The following table presents impaired loans by class, segregated by those for which a specific allowance was required and those for which a specific allowance was not necessary as of September 30, 2016 : (Dollar amounts in thousands) Impaired Loans with Specific Allowance As of September 30, 2016 For the three months Unpaid Principal Balance Recorded Investment Related Allowance Average Recorded Investment Interest Income Recognized in Period Cash Basis Interest Recognized in Period Residential first mortgages $ 169 $ 136 $ 20 $ 107 $ 3 $ 3 Home equity and lines of credit — — — — — — Commercial real estate — — — — — — Commercial business — — — — — — Consumer — — — — — — Total $ 169 $ 136 $ 20 $ 107 $ 3 $ 3 For the nine months ended September 30, 2016 Average Recorded Investment Interest Income Recognized in Period Cash Basis Interest Recognized in Period Residential first mortgages $ 115 $ 5 $ 5 Home equity and lines of credit — — — Commercial real estate 23 — — Commercial business 388 — — Consumer — — — Total $ 526 $ 5 $ 5 Impaired Loans with No Specific Allowance As of September 30, 2016 For the three months Unpaid Principal Balance Recorded Investment Average Recorded Investment Interest Income Recognized in Period Cash Basis Interest Recognized in Period Residential first mortgages $ — $ — $ 29 $ — $ — Home equity and lines of credit — — — — — Commercial real estate 1,190 791 807 1 1 Commercial business 675 675 682 — — Consumer — — — — — Total $ 1,865 $ 1,466 $ 1,518 $ 1 $ 1 For the nine months ended September 30, 2016 Average Interest Income Cash Basis Residential first mortgages $ 29 $ — $ — Home equity and lines of credit — — — Commercial real estate 804 2 2 Commercial business 379 1 1 Consumer — — — Total $ 1,212 $ 3 $ 3
Financing Receivable Credit Quality Indicators	The following table presents the classes of the loan portfolio summarized by the aggregate pass and the criticized categories of special mention, substandard and doubtful within the Corporation’s internal risk rating system as of September 30, 2017 and December 31, 2016 : (Dollar amounts in thousands) Not Rated Pass Special Mention Substandard Doubtful Total September 30, 2017: Residential first mortgages $ 224,759 $ — $ — $ 2,187 $ — $ 226,946 Home equity and lines of credit 91,172 — — 430 — 91,602 Commercial real estate — 181,561 3,049 7,513 — 192,123 Commercial business — 58,487 546 1,361 — 60,394 Consumer 9,525 — — 86 — 9,611 Total $ 325,456 $ 240,048 $ 3,595 $ 11,577 $ — $ 580,676 December 31, 2016: Residential first mortgages $ 197,041 $ — $ — $ 1,126 $ — $ 198,167 Home equity and lines of credit 91,017 — — 342 — 91,359 Commercial real estate — 161,312 1,077 4,605 — 166,994 Commercial business — 52,125 4,926 737 — 57,788 Consumer 6,659 — — 13 — 6,672 Total $ 294,717 $ 213,437 $ 6,003 $ 6,823 $ — $ 520,980
Past Due Financing Receivables	The following table presents the classes of the loan portfolio summarized by the aging categories of performing loans and nonperforming loans as of September 30, 2017 and December 31, 2016 : (Dollar amounts in thousands) Performing Nonperforming Accruing Loans Not Past Due Accruing 30-59 Days Past Due Accruing 60-89 Days Past Due Accruing 90+ Days Past Due Nonaccrual Total September 30, 2017: Residential first mortgages $ 221,942 $ 2,400 $ 833 $ 900 $ 871 $ 226,946 Home equity and lines of credit 90,502 394 281 — 425 91,602 Commercial real estate 190,031 693 449 — 950 192,123 Commercial business 59,509 209 91 — 585 60,394 Consumer 9,201 262 148 — — 9,611 Total loans $ 571,185 $ 3,958 $ 1,802 $ 900 $ 2,831 $ 580,676 December 31, 2016: Residential first mortgages $ 194,830 $ 1,916 $ 295 $ — $ 1,126 $ 198,167 Home equity and lines of credit 90,557 460 — 2 340 91,359 Commercial real estate 165,318 561 — 42 1,073 166,994 Commercial business 56,972 56 34 — 726 57,788 Consumer 6,602 28 29 — 13 6,672 Total loans $ 514,279 $ 3,021 $ 358 $ 44 $ 3,278 $ 520,980
Schedule of Financing Receivables, Non Accrual Status	The following table presents the Corporation’s nonaccrual loans by aging category as of September 30, 2017 and December 31, 2016 : (Dollar amounts in thousands) Not Past Due 30-59 Days Past Due 60-89 Days Past Due 90 Days + Past Due Total September 30, 2017: Residential first mortgages $ 373 $ 76 $ — $ 422 $ 871 Home equity and lines of credit — — — 425 425 Commercial real estate 355 — — 595 950 Commercial business 585 — — — 585 Consumer — — — — — Total loans $ 1,313 $ 76 $ — $ 1,442 $ 2,831 December 31, 2016: Residential first mortgages 72 77 — 977 1,126 Home equity and lines of credit — — — 340 340 Commercial real estate 397 — 557 119 1,073 Commercial business 631 — — 95 726 Consumer — — — 13 13 Total loans $ 1,100 $ 77 $ 557 $ 1,544 $ 3,278

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets and Goodwill	The following table summarizes the Corporation’s acquired goodwill and intangible assets as of September 30, 2017 and December 31, 2016 : (Dollar amounts in thousands) September 30, 2017 December 31, 2016 Gross Carrying Accumulated Gross Carrying Accumulated Goodwill $ 10,288 $ — $ 10,288 $ — Core deposit intangibles 4,426 3,876 4,259 3,699 Total $ 14,714 $ 3,876 $ 14,547 $ 3,699

Stock Compensation Plan (Tables

Stock Compensation Plan (Tables)	9 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Stock Options, Activity	A summary of option activity under the Plans as of September 30, 2017 , and changes during the period then ended is presented below: Options Weighted-Average Exercise Price Aggregate Intrinsic Value (in thousands) Weighted-Average Remaining Term (in years) Outstanding as of January 1, 2017 62,000 $ 25.71 $ 219 0.6 Granted — — — — Exercised (53,586 ) 25.67 108 — Forfeited — — — — Expired (8,414 ) 26.00 — — Outstanding as of September 30, 2017 — $ — $ — — Exercisable as of September 30, 2017 — $ — $ — —
Schedule of Nonvested Restricted Stock Units Activity	A summary of the status of the Corporation’s nonvested restricted stock awards as of September 30, 2017 , and changes during the period then ended is presented below: Shares Weighted-Average Grant-date Fair Value Nonvested at January 1, 2017 26,900 $ 25.09 Granted — — Vested — — Forfeited — — Nonvested as of September 30, 2017 26,900 $ 25.09

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value, by Balance Sheet Grouping	For assets measured at fair value on a recurring basis, the fair value measurements by level within the fair value hierarchy are as follows: (Dollar amounts in thousands) (Level 1) (Level 2) (Level 3) Description Total Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs September 30, 2017: U.S. Treasury and federal agency $ 4,514 $ 4,514 $ — $ — U.S. government sponsored entities and agencies 14,040 — 14,040 — U.S. agency mortgage-backed securities: residential 21,605 — 21,605 — U.S. agency collateralized mortgage obligations: residential 22,993 — 22,993 — State and political subdivision 26,707 — 26,707 — Corporate debt securities 9,529 — 9,529 — Equity securities 1,913 1,779 — 134 $ 101,301 $ 6,293 $ 94,874 $ 134 December 31, 2016: U.S. Treasury and federal agency 4,500 4,500 — — U.S. government sponsored entities and agencies 8,998 — 8,998 — U.S. agency mortgage-backed securities: residential 25,626 — 25,626 — U.S. agency collateralized mortgage obligations: residential 24,706 — 24,706 — State and political subdivisions 27,608 — 27,608 — Corporate debt securities 7,932 — 7,932 — Equity securities 2,190 2,054 — 136 $ 101,560 $ 6,554 $ 94,870 $ 136
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	The following table presents changes in Level 3 assets measured on a recurring basis for the three and nine month periods ended September 30, 2017 and 2016 : (Dollar amounts in thousands) Three months ended September 30, Nine months ended September 30, 2017 2016 2017 2016 Balance at the beginning of the period $ 135 $ 135 $ 136 $ 74 Total gains or losses (realized/unrealized): Included in earnings — — — — Included in other comprehensive income (1 ) — (2 ) 1 Acquired — — — 60 Transfers in and/or out of Level 3 — — — — Balance at the end of the period $ 134 $ 135 $ 134 $ 135
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis	For assets measured at fair value on a non-recurring basis at December 31, 2016, the fair value measurements by level within the fair value hierarchy are as follows: (Dollar amounts in thousands) (Level 1) (Level 2) (Level 3) Description Total Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs December 31, 2016: Impaired residential mortgage loan $ 58 $ — $ — $ 58 Impaired commercial real estate loan 463 463 Impaired commercial business loan 582 — — 582 $ 1,103 $ — $ — $ 1,103
Fair Value Inputs, Assets, Quantitative Information	The following table presents quantitative information about Level 3 fair value measurements for assets measured at fair value on a non-recurring basis: (Dollar amounts in thousands) Valuation Technique(s) Unobservable Input(s) Weighted Average December 31, 2016: Impaired residential mortgage loan $ 58 Sales comparison approach Adjustment for differences between comparable sales 10 % Impaired commercial real estate loan 463 Sales comparison approach Adjustment for differences between comparable sales 37 % Impaired commercial business loan 582 Liquidation value of business assets Adjustment for differences between comparable business assets 64 %
Schedule of Carrying Amount and Fair Values of Financial Instruments	The following table sets forth the carrying amount and estimated fair values of the Corporation’s financial instruments included in the consolidated balance sheet as of September 30, 2017 and December 31, 2016 : (Dollar amounts in thousands) Carrying Fair Value Measurements using: Description Amount Total Level 1 Level 2 Level 3 September 30, 2017: Financial Assets: Cash and cash equivalents $ 40,256 $ 40,256 $ 40,256 $ — $ — Securities available for sale 101,301 101,301 6,293 94,874 134 Loans, net 574,736 576,705 — — 576,705 Federal bank stock 4,906 — N/A N/A N/A Accrued interest receivable 2,228 2,228 86 405 1,737 $ 723,427 $ 720,490 $ 46,635 $ 95,279 $ 578,576 Financial Liabilities: Deposits 662,552 664,374 489,904 174,470 — Borrowed funds 41,250 41,043 — 41,043 — Accrued interest payable 399 399 17 382 — $ 704,201 $ 705,816 $ 489,921 $ 215,895 $ — Carrying Fair Value Measurements using: Amount Total Level 1 Level 2 Level 3 December 31, 2016: Financial Assets: Cash and cash equivalents $ 17,568 $ 17,568 $ 17,568 $ — $ — Securities available for sale 101,560 101,560 6,554 94,870 136 Loans held for sale 68 68 — 68 — Loans, net 515,435 519,573 — — 519,573 Federal bank stock 4,861 — N/A N/A N/A Accrued interest receivable 1,815 1,815 37 365 1,413 $ 641,307 $ 640,584 $ 24,159 $ 95,303 $ 521,122 Financial Liabilities: Deposits 584,940 582,458 423,693 158,765 — Borrowed funds 44,000 44,027 — 44,027 — Accrued interest payable 239 239 7 232 — $ 629,179 $ 626,724 $ 423,700 $ 203,024 $ —

Regulatory Matters (Tables)

Regulatory Matters (Tables)	9 Months Ended
	Sep. 30, 2017
Banking and Thrift [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	The following table sets forth certain information concerning the Bank’s regulatory capital as of the dates presented. The capital adequacy ratios disclosed below are exclusive of the capital conservation buffer. (Dollar amounts in thousands) September 30, 2017 December 31, 2016 Amount Ratio Amount Ratio Total capital to risk-weighted assets: Actual $ 63,229 12.39 % $ 58,605 12.69 % For capital adequacy purposes 40,818 8.00 % 36,945 8.00 % To be well capitalized 51,022 10.00 % 46,181 10.00 % Tier 1 capital to risk-weighted assets: Actual $ 57,282 11.23 % $ 53,050 11.49 % For capital adequacy purposes 30,613 6.00 % 27,709 6.00 % To be well capitalized 40,818 8.00 % 36,945 8.00 % Common Equity Tier 1 capital to risk-weighted assets: Actual $ 57,282 11.23 % $ 53,050 11.49 % For capital adequacy purposes 22,960 4.50 % 20,781 4.50 % To be well capitalized 33,165 6.50 % 30,018 6.50 % Tier 1 capital to average assets: Actual $ 57,282 7.82 % $ 53,050 7.84 % For capital adequacy purposes 29,307 4.00 % 27,081 4.00 % To be well capitalized 36,634 5.00 % 33,852 5.00 %

Accumulated Other Comprehensi29

Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following tables summarize the changes within each classification of accumulated other comprehensive income (loss), net of tax, for the three months ended September 30, 2017 and 2016 and summarizes the significant amounts reclassified out of each component of accumulated other comprehensive income: (Dollar amounts in thousands) Unrealized Gains and Losses on Available-for-Sale Securities Defined Benefit Pension Items Totals Accumulated Other Comprehensive Income (Loss) at July 1, 2017 $ (307 ) $ (3,812 ) $ (4,119 ) Other comprehensive income before reclassification 153 — 153 Amounts reclassified from accumulated other comprehensive income (loss) — — — Net current period other comprehensive income 153 — 153 Accumulated Other Comprehensive Income (Loss) at September 30, 2017 $ (154 ) $ (3,812 ) $ (3,966 ) (Dollar amounts in thousands) Unrealized Gains and Losses on Available-for-Sale Securities Defined Benefit Pension Items Totals Accumulated Other Comprehensive Income (Loss) at January 1, 2016 $ (248 ) $ (3,514 ) $ (3,762 ) Other comprehensive income before reclassification 1,162 — 1,162 Amounts reclassified from accumulated other comprehensive income (loss) (55 ) — (55 ) Net current period other comprehensive income 1,107 — 1,107 Accumulated Other Comprehensive Income (Loss) at September 30, 2016 $ 859 $ (3,514 ) $ (2,655 ) (Dollar amounts in thousands) Unrealized Gains and Losses on Available-for-Sale Securities Defined Benefit Pension Items Totals Accumulated Other Comprehensive Income (Loss) at July 1, 2016 $ 1,038 $ (3,514 ) $ (2,476 ) Other comprehensive income before reclassification (179 ) — (179 ) Amounts reclassified from accumulated other comprehensive income (loss) — — — Net current period other comprehensive income (179 ) — (179 ) Accumulated Other Comprehensive Income (Loss) at September 30, 2016 $ 859 $ (3,514 ) $ (2,655 ) The following tables summarize the changes within each classification of accumulated other comprehensive income (loss), net of tax, for the nine months ended September 30, 2017 and 2016 and summarizes the significant amounts reclassified out of each component of accumulated other comprehensive income: (Dollar amounts in thousands) Unrealized Gains and Losses on Available-for-Sale Securities Defined Benefit Pension Items Totals Accumulated Other Comprehensive Income (Loss) at January 1, 2017 $ (679 ) $ (3,812 ) $ (4,491 ) Other comprehensive income before reclassification 421 — 421 Amounts reclassified from accumulated other comprehensive income (loss) 104 — 104 Net current period other comprehensive income 525 — 525 Accumulated Other Comprehensive Income (Loss) at September 30, 2017 $ (154 ) $ (3,812 ) $ (3,966 )
Reclassification out of Accumulated Other Comprehensive Income	(Dollar amounts in thousands) Details about Accumulated Other Comprehensive Loss Components Amount Reclassified Affected Line Item in the Statement Where Net Income is Presented Unrealized gains and losses on available-for-sale securities $ — Net gain on sale of available-for-sale securities Unrealized gains and losses on available-for-sale securities — Other than temporary impairment losses — Provision for income taxes Total reclassifications for the period $ — Net of tax (Dollar amounts in thousands) Details about Accumulated Other Comprehensive Loss Components Amount Reclassified Affected Line Item in the Statement Where Net Income is Presented Unrealized gains and losses on available-for-sale securities $ — Net gain on sale of available-for-sale securities — Provision for income taxes Total reclassifications for the period $ — Net of tax (Dollar amounts in thousands) Details about Accumulated Other Comprehensive Loss Components Amount Reclassified Affected Line Item in the Statement Where Net Income is Presented Unrealized gains and losses on available-for-sale securities $ 350 Net gain on sale of available-for-sale securities Unrealized gains and losses on available-for-sale securities (508 ) Other than temporary impairment losses 54 Provision for income taxes Total reclassifications for the period $ (104 ) Net of tax (Dollar amounts in thousands) Details about Accumulated Other Comprehensive Loss Components Amount Reclassified from Accumulated Other Comprehensive Income For the nine months ended September 30, 2016 Affected Line Item in the Statement Where Net Income is Presented Unrealized gains and losses on available-for-sale securities $ 83 Net gain on sale of available-for-sale securities (28 ) Provision for income taxes Total reclassifications for the period $ 55 Net of tax

Mergers and Acquisitions - Addi

Mergers and Acquisitions - Additional Information (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Business Acquisition [Line Items]
Gain on bargain purchase		$ 1,307	$ 0	$ 1,307	$ 0
Northern Hancock
Business Acquisition [Line Items]
Stock issued in merger (in shares)	54,445
Value of stock issued in merger	$ 1,700	1,674
Payments to acquire businesses, gross	22	22
Gain on bargain purchase	1,300	1,307
Core deposit intangible	167	167		167
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Fair value of acquired receivables	18,500	18,500		18,500
Credit related adjustment to fair value	(566)	(566)		(566)
Fair value adjustment of other factors	537	537		537
Loans receivable	18,480	18,480		18,480
Acquisition related costs		963		1,100
Conversion costs		344		344
Contract termination fees		279		279
Legal fees		108		200
Severance costs		108		108
Accounting and auditing		46		55
Other costs		78		84
Northern Hancock | Receivables Acquired with Deteriorated Credit Quality
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Loans receivable	0	0		0
Northern Hancock | Core Deposits
Business Acquisition [Line Items]
Core deposit intangible	$ 167	167		167
Weighted average useful life	8 years
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,017	$ 11	11		11
2,018	40	40		40
2,019	30	30		30
2,020	22	22		22
2,021	17	17		17
After 2,021	$ 47	$ 47		$ 47

Mergers and Acquisitions - Esti

Mergers and Acquisitions - Estimated Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Consideration paid:
Gain on bargain purchase		$ 1,307	$ 0	$ 1,307	$ 0
Northern Hancock
Assets acquired:
Cash and cash equivalents	$ 2,539	2,539		2,539
Loans receivable	18,480	18,480		18,480
Federal bank stocks	11	11		11
Accrued interest receivable	103	103		103
Premises and equipment	708	708		708
Core deposit intangible	167	167		167
Prepaid expenses and other assets	757	757		757
Total assets acquired	22,765	22,765		22,765
Liabilities assumed:
Deposits	19,748	19,748		19,748
Accrued interest payable	6	6		6
Accrued expenses and other liabilities	8	8		8
Total liabilities assumed	19,762	19,762		19,762
Identifiable net assets acquired	3,003	3,003		$ 3,003
Consideration paid:
Cash	22	22
Common stock	1,700	1,674
Total consideration	1,696
Gain on bargain purchase	$ 1,300	$ 1,307

Earnings per Common Share (Deta

Earnings per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings per common share - basic
Net income	$ 1,707	$ 1,058	$ 3,704	$ 2,790
Average common shares outstanding (in shares)	2,204,949	2,146,308	2,174,210	2,145,761
Basic earnings per common share (in dollars per share)	$ 0.77	$ 0.49	$ 1.70	$ 1.30
Earnings per common share - diluted
Net income	$ 1,707	$ 1,058	$ 3,704	$ 2,790
Average common shares outstanding (in shares)	2,204,949	2,146,308	2,174,210	2,145,761
Add: Dilutive effects of assumed issuance of restricted stock and exercise of stock options (in shares)	15,471	11,965	16,437	10,141
Average shares and dilutive potential common shares (in shares)	2,220,420	2,158,273	2,190,647	2,155,902
Diluted earnings per common share (in dollars per share)	$ 0.77	$ 0.49	$ 1.69	$ 1.29
Stock options not considered in computing earnings per share because they were antidilutive (in shares)	0	57,000	0	57,000

Securities - Summary of Securit

Securities - Summary of Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 101,532	$ 102,587
Gross Unrealized Gains	609	450
Gross Unrealized Losses	(840)	(1,477)
Fair Value	101,301	101,560
U.S. Treasury and federal agency
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,543	4,550
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(29)	(50)
Fair Value	4,514	4,500
U.S. government sponsored entities and agencies
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	14,147	9,186
Gross Unrealized Gains	12	0
Gross Unrealized Losses	(119)	(188)
Fair Value	14,040	8,998
U.S. agency mortgage-backed securities: residential
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	21,615	25,790
Gross Unrealized Gains	45	32
Gross Unrealized Losses	(55)	(196)
Fair Value	21,605	25,626
U.S. agency collateralized mortgage obligations: residential
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	23,516	25,367
Gross Unrealized Gains	36	23
Gross Unrealized Losses	(559)	(684)
Fair Value	22,993	24,706
State and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	26,621	27,853
Gross Unrealized Gains	140	17
Gross Unrealized Losses	(54)	(262)
Fair Value	26,707	27,608
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	9,510	8,012
Gross Unrealized Gains	37	5
Gross Unrealized Losses	(18)	(85)
Fair Value	9,529	7,932
Equity securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,580	1,829
Gross Unrealized Gains	339	373
Gross Unrealized Losses	(6)	(12)
Fair Value	$ 1,913	$ 2,190

Securities - Summary of Schedul

Securities - Summary of Scheduled Maturities (Details) $ in Thousands	Sep. 30, 2017USD ($)
Amortized Cost
Due in one year or less	$ 2,852
Due after one year through five years	26,440
Due after five through ten years	11,860
Due after ten years	13,669
Amortized Cost	99,952
Fair Value
Due in one year or less	2,851
Due after one year through five years	26,380
Due after five through ten years	11,899
Due after ten years	13,660
Fair Value	99,388
U.S. agency mortgage-backed securities: residential
Amortized Cost
Amortized Cost	21,615
Fair Value
Fair Value	21,605
U.S. agency collateralized mortgage obligations: residential
Amortized Cost
Amortized Cost	23,516
Fair Value
Fair Value	$ 22,993

Securities - Schedule of Securi

Securities - Schedule of Securities with Gross Unrealized Loses (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Fair Value
Less than 12 Months	$ 33,749	$ 76,196
12 Months or More	19,810	9,554
Total	53,559	85,750
Unrealized Loss
Less than 12 Months	(334)	(1,219)
12 Months or More	(506)	(258)
Total	(840)	(1,477)
U.S. Treasury and federal agency
Fair Value
Less than 12 Months	4,514	4,500
12 Months or More	0	0
Total	4,514	4,500
Unrealized Loss
Less than 12 Months	(29)	(50)
12 Months or More	0	0
Total	(29)	(50)
U.S. government sponsored entities and agencies
Fair Value
Less than 12 Months	9,049	8,998
12 Months or More	1,992	0
Total	11,041	8,998
Unrealized Loss
Less than 12 Months	(111)	(188)
12 Months or More	(8)	0
Total	(119)	(188)
U.S. agency mortgage-backed securities: residential
Fair Value
Less than 12 Months	6,873	23,279
12 Months or More	0	0
Total	6,873	23,279
Unrealized Loss
Less than 12 Months	(55)	(196)
12 Months or More	0	0
Total	(55)	(196)
U.S. agency collateralized mortgage obligations: residential
Fair Value
Less than 12 Months	5,229	13,568
12 Months or More	15,928	9,317
Total	21,157	22,885
Unrealized Loss
Less than 12 Months	(82)	(438)
12 Months or More	(477)	(246)
Total	(559)	(684)
State and political subdivisions
Fair Value
Less than 12 Months	5,098	21,924
12 Months or More	1,646	0
Total	6,744	21,924
Unrealized Loss
Less than 12 Months	(39)	(262)
12 Months or More	(15)	0
Total	(54)	(262)
Corporate debt securities
Fair Value
Less than 12 Months	2,986	3,927
12 Months or More	0	0
Total	2,986	3,927
Unrealized Loss
Less than 12 Months	(18)	(85)
12 Months or More	0	0
Total	(18)	(85)
Equity securities
Fair Value
Less than 12 Months	0	0
12 Months or More	244	237
Total	244	237
Unrealized Loss
Less than 12 Months	0	0
12 Months or More	(6)	(12)
Total	$ (6)	$ (12)

Securities - Gains on Sales of

Securities - Gains on Sales of Available for Sale Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Proceeds	$ 0	$ 0	$ 18,195	$ 6,118
Gains	0	0	350	83
Tax provision related to gains	$ 0	$ 0	$ 119	$ 28

Securities - Additional Informa

Securities - Additional Information (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2017USD ($)	Sep. 30, 2017security
Equity securities
Schedule of Available-for-sale Securities [Line Items]
Securities in unrealized loss positions greater than or equal to one year		1
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Securities impairment loss | $	$ 508
Number of securities in unrealized loss position		6
Debt securities
Schedule of Available-for-sale Securities [Line Items]
Securities in unrealized loss positions greater than or equal to one year		24
Number of securities in unrealized loss position		69
U.S. agency collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Number of securities in unrealized loss position		25
State and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Number of securities in unrealized loss position		17
U.S. government sponsored entities and agencies
Schedule of Available-for-sale Securities [Line Items]
Number of securities in unrealized loss position		10
U.S. agency mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Number of securities in unrealized loss position		6
U.S. Treasury and federal agency
Schedule of Available-for-sale Securities [Line Items]
Number of securities in unrealized loss position		5

Loans Receivable and Related 38

Loans Receivable and Related Allowance for Loan Losses - Summary of Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	$ 580,676		$ 520,980
Less allowance for loan losses	5,940	$ 5,767	5,545	$ 5,514	$ 5,431	$ 5,205
Total loans, net	574,736		515,435
Residential first mortgages
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	226,946		198,167
Less allowance for loan losses	2,038	1,994	1,846	1,732	1,696	1,429
Home equity loans and lines of credit
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	91,602		91,359
Less allowance for loan losses	627	639	633	626	645	586
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	192,123		166,994
Less allowance for loan losses	2,626	2,460	2,314	2,119	2,118	2,185
Commercial business
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	60,394		57,788
Less allowance for loan losses	596	621	700	984	920	960
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	9,611		6,672
Less allowance for loan losses	53	$ 53	52	$ 53	$ 52	$ 45
Mortgage loans on real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	510,671		456,520
Mortgage loans on real estate | Residential first mortgages
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	226,946		198,167
Mortgage loans on real estate | Home equity loans and lines of credit
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	91,602		91,359
Mortgage loans on real estate | Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	192,123		166,994
Other loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	70,005		64,460
Other loans | Commercial business
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	60,394		57,788
Other loans | Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	$ 9,611		$ 6,672

Loans Receivable and Related 39

Loans Receivable and Related Allowance for Loan Losses - Additional Information (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)loan	Sep. 30, 2016USD ($)loan	Sep. 30, 2017USD ($)loan	Sep. 30, 2016USD ($)loan	Jun. 30, 2017USD ($)	Dec. 31, 2016USD ($)	Jun. 30, 2016USD ($)	Dec. 31, 2015USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Deferred costs	$ 1,500,000		$ 1,500,000			$ 1,300,000
Allowance for loan losses	5,940,000	$ 5,514,000	5,940,000	$ 5,514,000	$ 5,767,000	5,545,000	$ 5,431,000	$ 5,205,000
Loans classified as TDRs	505,000		505,000			239,000
Allowance loan losses allocated to TDRs	$ 8,000		$ 8,000			19,000
Number of loans modified | loan	0
Threshold period past due for payment default consideration			30 days
Loans modified as TDRs with payment default after 12 months of modification | loan	0	0	0	0
Weighted average period of loss estimate			3 years
United American Savings Bank
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 0		$ 0
Northern Hancock
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	0		0
Residential first mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	2,038,000	$ 1,732,000	2,038,000	$ 1,732,000	1,994,000	1,846,000	1,696,000	1,429,000
Loans classified as TDRs	323,000		323,000
Allowance loan losses allocated to TDRs	0		$ 0
Number of loans modified | loan			1
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	2,626,000	2,119,000	$ 2,626,000	2,119,000	2,460,000	2,314,000	2,118,000	2,185,000
Home equity loans and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 627,000	626,000	627,000	626,000	$ 639,000	$ 633,000	$ 645,000	$ 586,000
Loans classified as TDRs		10,000		10,000
Allowance loan losses allocated to TDRs		$ 0		$ 0
Number of loans modified | loan		1		1
Mortgage loans on real estate | Residential first mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sale of loans held-for-investment			1,100,000
Mortgage loans on real estate | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sale of loans held-for-investment			$ 590,000

Loans Receivable and Related 40

Loans Receivable and Related Allowance for Loan Losses - Activity in Allowance for Loan Losses by Portfolio (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Allowance for loan losses:
Beginning Balance	$ 5,767	$ 5,431	$ 5,545	$ 5,205	$ 5,205
Charge-offs	(101)	(94)	(275)	(182)
Recoveries	4	9	37	21
Provision	270	168	633	470
Ending Balance	5,940	5,514	5,940	5,514	5,545
Ending ALL balance attributable to loans:
Individually evaluated for impairment	8		8		120
Acquired loans collectively evaluated for impairment			0		0
Originated loans collectively evaluated for impairment	5,932		5,932		5,425
Total loans:
Individually evaluated for impairment	1,957		1,957		1,833
Acquired loans collectively evaluated for impairment			66,177		58,936
Originated loans collectively evaluated for impairment	512,542		512,542		460,211
Total	580,676		580,676		520,980
Residential Mortgages
Allowance for loan losses:
Beginning Balance	1,994	1,696	1,846	1,429	1,429
Charge-offs	(2)	(22)	(38)	(63)
Recoveries	0	0	0	0
Provision	46	58	230	366
Ending Balance	2,038	1,732	2,038	1,732	1,846
Ending ALL balance attributable to loans:
Individually evaluated for impairment	8		8		19
Acquired loans collectively evaluated for impairment			0		0
Originated loans collectively evaluated for impairment	2,030		2,030		1,827
Total loans:
Individually evaluated for impairment	433		433		135
Acquired loans collectively evaluated for impairment			28,792		25,024
Originated loans collectively evaluated for impairment	197,721		197,721		173,008
Total	226,946		226,946		198,167
Home Equity & Lines of Credit
Allowance for loan losses:
Beginning Balance	639	645	633	586	586
Charge-offs	(33)	(19)	(44)	(52)
Recoveries	1	1	21	2
Provision	20	(1)	17	90
Ending Balance	627	626	627	626	633
Ending ALL balance attributable to loans:
Individually evaluated for impairment	0		0		0
Acquired loans collectively evaluated for impairment			0		0
Originated loans collectively evaluated for impairment	627		627		633
Total loans:
Individually evaluated for impairment	0		0		0
Acquired loans collectively evaluated for impairment			3,697		5,225
Originated loans collectively evaluated for impairment	87,905		87,905		86,134
Total	91,602		91,602		91,359
Commercial Real Estate
Allowance for loan losses:
Beginning Balance	2,460	2,118	2,314	2,185	2,185
Charge-offs	(36)	(11)	(126)	(11)
Recoveries	2	2	6	9
Provision	200	10	432	(64)
Ending Balance	2,626	2,119	2,626	2,119	2,314
Ending ALL balance attributable to loans:
Individually evaluated for impairment	0		0		95
Acquired loans collectively evaluated for impairment			0		0
Originated loans collectively evaluated for impairment	2,626		2,626		2,219
Total loans:
Individually evaluated for impairment	939		939		1,014
Acquired loans collectively evaluated for impairment			28,916		27,492
Originated loans collectively evaluated for impairment	162,268		162,268		138,488
Total	192,123		192,123		166,994
Commercial Business
Allowance for loan losses:
Beginning Balance	621	920	700	960	960
Charge-offs	(4)	(11)	(14)	(11)
Recoveries	0	0	0	0
Provision	(21)	75	(90)	35
Ending Balance	596	984	596	984	700
Ending ALL balance attributable to loans:
Individually evaluated for impairment	0		0		6
Acquired loans collectively evaluated for impairment			0		0
Originated loans collectively evaluated for impairment	596		596		694
Total loans:
Individually evaluated for impairment	585		585		684
Acquired loans collectively evaluated for impairment			2,390		1,182
Originated loans collectively evaluated for impairment	57,419		57,419		55,922
Total	60,394		60,394		57,788
Consumer
Allowance for loan losses:
Beginning Balance	53	52	52	45	45
Charge-offs	(26)	(31)	(53)	(45)
Recoveries	1	6	10	10
Provision	25	26	44	43
Ending Balance	53	$ 53	53	$ 53	52
Ending ALL balance attributable to loans:
Individually evaluated for impairment	0		0		0
Acquired loans collectively evaluated for impairment			0		0
Originated loans collectively evaluated for impairment	53		53		52
Total loans:
Individually evaluated for impairment	0		0		0
Acquired loans collectively evaluated for impairment			2,382		13
Originated loans collectively evaluated for impairment	7,229		7,229		6,659
Total	$ 9,611		$ 9,611		$ 6,672

Loans Receivable and Related 41

Loans Receivable and Related Allowance for Loan Losses - Impaired Loans by Class (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Impaired Loans with Specific Allowance
Unpaid Principal Balance	$ 76	$ 169	$ 76	$ 169	$ 1,313
Recorded Investment	76	136	76	136	1,280
Related Allowance	8	20	8	20	120
Average Recorded Investment	76	107	377	526	677
Interest Income Recognized in Period	0	3	2	5	29
Cash Basis Interest Recognized in Period	0	3	2	5	6
Impaired Loans with No Specific Allowance
Unpaid Principal Balance	2,167	1,865	2,167	1,865	727
Recorded Investment	1,881	1,466	1,881	1,466	553
Average Recorded Investment	1,911	1,518	1,595	1,212	1,080
Interest Income Recognized in Period	3	1	9	3	5
Cash Basis Interest Recognized in Period	3	1	9	3	5
Residential first mortgages
Impaired Loans with Specific Allowance
Unpaid Principal Balance	76	169	76	169	168
Recorded Investment	76	136	76	136	135
Related Allowance	8	20	8	20	19
Average Recorded Investment	76	107	91	115	119
Interest Income Recognized in Period	0	3	2	5	6
Cash Basis Interest Recognized in Period	0	3	2	5	6
Impaired Loans with No Specific Allowance
Unpaid Principal Balance	469	0	469	0	0
Recorded Investment	357	0	357	0	0
Average Recorded Investment	362	29	274	29	23
Interest Income Recognized in Period	1	0	5	0	0
Cash Basis Interest Recognized in Period	1	0	5	0	0
Home equity loans and lines of credit
Impaired Loans with Specific Allowance
Unpaid Principal Balance	0	0	0	0	0
Recorded Investment	0	0	0	0	0
Related Allowance	0	0	0	0	0
Average Recorded Investment	0	0	0	0	0
Interest Income Recognized in Period	0	0	0	0	0
Cash Basis Interest Recognized in Period	0	0	0	0	0
Impaired Loans with No Specific Allowance
Unpaid Principal Balance	0	0	0	0	0
Recorded Investment	0	0	0	0	0
Average Recorded Investment	0	0	0	0	0
Interest Income Recognized in Period	0	0	0	0	0
Cash Basis Interest Recognized in Period	0	0	0	0	0
Commercial real estate
Impaired Loans with Specific Allowance
Unpaid Principal Balance	0	0	0	0	557
Recorded Investment	0	0	0	0	557
Related Allowance	0	0	0	0	95
Average Recorded Investment	0	0	139	23	130
Interest Income Recognized in Period	0	0	0	0	23
Cash Basis Interest Recognized in Period	0	0	0	0	0
Impaired Loans with No Specific Allowance
Unpaid Principal Balance	1,113	1,190	1,113	1,190	631
Recorded Investment	939	791	939	791	457
Average Recorded Investment	957	807	840	804	735
Interest Income Recognized in Period	1	1	2	2	3
Cash Basis Interest Recognized in Period	1	1	2	2	3
Commercial business
Impaired Loans with Specific Allowance
Unpaid Principal Balance	0	0	0	0	588
Recorded Investment	0	0	0	0	588
Related Allowance	0	0	0	0	6
Average Recorded Investment	0	0	147	388	428
Interest Income Recognized in Period	0	0	0	0	0
Cash Basis Interest Recognized in Period	0	0	0	0	0
Impaired Loans with No Specific Allowance
Unpaid Principal Balance	585	675	585	675	96
Recorded Investment	585	675	585	675	96
Average Recorded Investment	592	682	481	379	322
Interest Income Recognized in Period	1	0	2	1	2
Cash Basis Interest Recognized in Period	1	0	2	1	2
Consumer
Impaired Loans with Specific Allowance
Unpaid Principal Balance	0	0	0	0	0
Recorded Investment	0	0	0	0	0
Related Allowance	0	0	0	0	0
Average Recorded Investment	0	0	0	0	0
Interest Income Recognized in Period	0	0	0	0	0
Cash Basis Interest Recognized in Period	0	0	0	0	0
Impaired Loans with No Specific Allowance
Unpaid Principal Balance	0	0	0	0	0
Recorded Investment	0	0	0	0	0
Average Recorded Investment	0	0	0	0	0
Interest Income Recognized in Period	0	0	0	0	0
Cash Basis Interest Recognized in Period	$ 0	$ 0	$ 0	$ 0	$ 0

Loans Receivable and Related 42

Loans Receivable and Related Allowance for Loan Losses - Loan Portfolio by Internal Risk Rating System (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 580,676	$ 520,980
Not Rated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	325,456	294,717
Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	240,048	213,437
Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,595	6,003
Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	11,577	6,823
Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Residential first mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	226,946	198,167
Residential first mortgages | Not Rated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	224,759	197,041
Residential first mortgages | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Residential first mortgages | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Residential first mortgages | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,187	1,126
Residential first mortgages | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Home equity loans and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	91,602	91,359
Home equity loans and lines of credit | Not Rated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	91,172	91,017
Home equity loans and lines of credit | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Home equity loans and lines of credit | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Home equity loans and lines of credit | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	430	342
Home equity loans and lines of credit | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	192,123	166,994
Commercial real estate | Not Rated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial real estate | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	181,561	161,312
Commercial real estate | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,049	1,077
Commercial real estate | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	7,513	4,605
Commercial real estate | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	60,394	57,788
Commercial Business | Not Rated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial Business | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	58,487	52,125
Commercial Business | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	546	4,926
Commercial Business | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,361	737
Commercial Business | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	9,611	6,672
Consumer | Not Rated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	9,525	6,659
Consumer | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Consumer | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Consumer | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	86	13
Consumer | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 0	$ 0

Loans Receivable and Related 43

Loans Receivable and Related Allowance for Loan Losses - Classes of Loan Portfolio by Aging Categories (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Not Past Due	$ 571,185	$ 514,279
Nonaccrual	2,831	3,278
Total loans	580,676	520,980
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Past Due	3,958	3,021
Nonaccrual	76	77
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Past Due	1,802	358
Nonaccrual	0	557
90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Past Due	900	44
Nonaccrual	1,442	1,544
Residential first mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Not Past Due	221,942	194,830
Nonaccrual	871	1,126
Total loans	226,946	198,167
Residential first mortgages | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Past Due	2,400	1,916
Nonaccrual	76	77
Residential first mortgages | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Past Due	833	295
Nonaccrual	0	0
Residential first mortgages | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Past Due	900	0
Nonaccrual	422	977
Home equity loans and lines of credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Not Past Due	90,502	90,557
Nonaccrual	425	340
Total loans	91,602	91,359
Home equity loans and lines of credit | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Past Due	394	460
Nonaccrual	0	0
Home equity loans and lines of credit | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Past Due	281	0
Nonaccrual	0	0
Home equity loans and lines of credit | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Past Due	0	2
Nonaccrual	425	340
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Not Past Due	190,031	165,318
Nonaccrual	950	1,073
Total loans	192,123	166,994
Commercial real estate | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Past Due	693	561
Nonaccrual	0	0
Commercial real estate | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Past Due	449	0
Nonaccrual	0	557
Commercial real estate | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Past Due	0	42
Nonaccrual	595	119
Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Not Past Due	59,509	56,972
Nonaccrual	585	726
Total loans	60,394	57,788
Commercial business | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Past Due	209	56
Nonaccrual	0	0
Commercial business | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Past Due	91	34
Nonaccrual	0	0
Commercial business | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Past Due	0	0
Nonaccrual	0	95
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Not Past Due	9,201	6,602
Nonaccrual	0	13
Total loans	9,611	6,672
Consumer | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Past Due	262	28
Nonaccrual	0	0
Consumer | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Past Due	148	29
Nonaccrual	0	0
Consumer | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Past Due	0	0
Nonaccrual	$ 0	$ 13

Loans Receivable and Related 44

Loans Receivable and Related Allowance for Loan Losses - Nonaccrual Loans by Aging Category (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	$ 2,831	$ 3,278
Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	1,313	1,100
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	76	77
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0	557
90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	1,442	1,544
Residential first mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	871	1,126
Residential first mortgages | Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	373	72
Residential first mortgages | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	76	77
Residential first mortgages | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0	0
Residential first mortgages | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	422	977
Home equity loans and lines of credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	425	340
Home equity loans and lines of credit | Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0	0
Home equity loans and lines of credit | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0	0
Home equity loans and lines of credit | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0	0
Home equity loans and lines of credit | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	425	340
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	950	1,073
Commercial real estate | Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	355	397
Commercial real estate | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0	0
Commercial real estate | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0	557
Commercial real estate | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	595	119
Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	585	726
Commercial business | Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	585	631
Commercial business | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0	0
Commercial business | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0	0
Commercial business | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0	95
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0	13
Consumer | Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0	0
Consumer | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0	0
Consumer | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0	0
Consumer | 90 Days and Greater Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	$ 0	$ 13

Goodwill and Intangible Asset45

Goodwill and Intangible Assets - Acquired Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Gross Carrying Amount
Goodwill	$ 10,288	$ 10,288
Core deposit intangibles	4,426	4,259
Total	14,714	14,547
Accumulated Amortization
Goodwill	0	0
Core deposit intangibles	3,876	3,699
Total	$ 3,876	$ 3,699

Goodwill and Intangible Asset46

Goodwill and Intangible Assets - Additional Information (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017USD ($)acquisition	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)acquisition	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Number of acquisitions resulting in goodwill | acquisition	4		4
Goodwill					$ 6,600,000
Goodwill impairment loss			$ 0		$ 0
Intangible asset amortization	$ 58,000	$ 60,000	$ 177,000	$ 165,000

Stock Compensation Plan - Addit

Stock Compensation Plan - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 55	$ 44	$ 164	$ 154
Unrecognized compensation expense related to nonvested share-based plans	$ 315		$ 315
Period of recognition for unrecognized compensation expense			1 year 3 months 18 days
2014 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares)	176,866		176,866
2014 Stock Incentive Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grants (in shares)	65,783		65,783
2014 Stock Incentive Plan | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grants (in shares)	88,433		88,433
2007 Stock Incentive Plan and Trust
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares)	177,496		177,496
Shares available for grants (in shares)	0		0
2007 Stock Incentive Plan and Trust | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term			10 years

Stock Compensation Plan - Summa

Stock Compensation Plan - Summary of Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Options
Outstanding as of beginning of period (in shares)	62,000
Granted (in shares)	0
Exercised (in shares)	(53,586)
Forfeited (in shares)	0
Expired (in shares)	(8,414)
Outstanding as of end of period (in shares)	0	62,000
Exercisable (in shares)	0
Weighted-Average Exercise Price
Outstanding as of beginning of period (in dollars per share)	$ 25.71
Granted (in dollars per share)	0
Exercised (in dollars per share)	25.67
Forfeited (in dollars per share)	0
Expired (in dollars per share)	26
Outstanding as of end of period (in dollars per share)	0	$ 25.71
Exercisable (in dollars per share)	$ 0
Aggregate Intrinsic Value
Outstanding as of beginning of period	$ 219
Exercised	108
Outstanding as of end of period	0	$ 219
Exercisable as of end of period	$ 0
Weighted-Average Remaining Term (in years)
Outstanding	0 years	7 months 6 days
Exercisable as of the end of the period	0 years

Stock Compensation Plan - Sum49

Stock Compensation Plan - Summary of Nonvested Restricted Stock Awards (Details) - Restricted Stock	9 Months Ended
	Sep. 30, 2017$ / sharesshares
Shares
Nonvested balance at beginning of period (in shares) | shares	26,900
Granted (in shares) | shares	0
Vested (in shares) | shares	0
Forfeited (in shares) | shares	0
Nonvested balance at end of period (in shares) | shares	26,900
Weighted-Average Grant-date Fair Value
Nonvested balance at beginning of period (in dollars per share) | $ / shares	$ 25.09
Granted (in dollars per share) | $ / shares	0
Vested (in dollars per share) | $ / shares	0
Forfeited (in dollars per share) | $ / shares	0
Nonvested balance at end of period (in dollars per share) | $ / shares	$ 25.09

Fair Value - Additional Informa

Fair Value - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Related allowance	$ 8,000	$ 20,000	$ 8,000	$ 20,000	$ 120,000
Provision for loan losses	270,000	168,000	633,000	470,000
Write-downs	0	0	$ 0	0
Discount rate			10.00%
Loans classified as TDRs	505,000		$ 505,000		239,000
Residential Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans classified as TDRs					58,000
Market and Income Approach Valuation Technique
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired financing receivable, recorded investment	0		0		1,200,000
Related allowance					$ 120,000
Market and Income Approach Valuation Technique | Impaired Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Provision for loan losses	$ 0	$ 0	$ 0	$ 0

Fair Value - Assets Measured at

Fair Value - Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	$ 101,301	$ 101,560
U.S. Treasury and federal agency
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	4,514	4,500
U.S. government sponsored entities and agencies
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	14,040	8,998
U.S. agency mortgage-backed securities: residential
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	21,605	25,626
U.S. agency collateralized mortgage obligations: residential
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	22,993	24,706
State and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	26,707	27,608
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	9,529	7,932
Equity securities
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	1,913	2,190
Level 1
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	6,293	6,554
Level 1 | U.S. Treasury and federal agency
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	4,514	4,500
Level 1 | U.S. government sponsored entities and agencies
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	0	0
Level 1 | U.S. agency mortgage-backed securities: residential
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	0	0
Level 1 | U.S. agency collateralized mortgage obligations: residential
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	0	0
Level 1 | State and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	0	0
Level 1 | Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	0	0
Level 1 | Equity securities
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	1,779	2,054
Level 2
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	94,874	94,870
Level 2 | U.S. Treasury and federal agency
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	0	0
Level 2 | U.S. government sponsored entities and agencies
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	14,040	8,998
Level 2 | U.S. agency mortgage-backed securities: residential
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	21,605	25,626
Level 2 | U.S. agency collateralized mortgage obligations: residential
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	22,993	24,706
Level 2 | State and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	26,707	27,608
Level 2 | Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	9,529	7,932
Level 2 | Equity securities
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	0	0
Level 3
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	134	136
Level 3 | U.S. Treasury and federal agency
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	0	0
Level 3 | U.S. government sponsored entities and agencies
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	0	0
Level 3 | U.S. agency mortgage-backed securities: residential
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	0	0
Level 3 | U.S. agency collateralized mortgage obligations: residential
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	0	0
Level 3 | State and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	0	0
Level 3 | Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	0	0
Level 3 | Equity securities
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale	$ 134	$ 136

Fair Value - Changes in Level 3

Fair Value - Changes in Level 3 Assets Measured on a Recurring Basis (Details) - Level 3 - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at the beginning of the period	$ 135	$ 135	$ 136	$ 74
Total gains or losses (realized/unrealized):
Included in earnings	0	0	0	0
Included in other comprehensive income	(1)	0	(2)	1
Acquired	0	0	0	60
Transfers in and/or out of Level 3	0	0	0	0
Balance at the end of the period	$ 134	$ 135	$ 134	$ 135

Fair Value - Assets Measured 53

Fair Value - Assets Measured at Fair Value on a Non-recurring Basis (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Total		$ 1,103,000
Impaired residential mortgage loan
Financing Receivable, Impaired [Line Items]
Total		58,000
Impaired commercial real estate loan
Financing Receivable, Impaired [Line Items]
Total		463,000
Impaired commercial business loan
Financing Receivable, Impaired [Line Items]
Total		582,000
Level 3 | Impaired residential mortgage loan
Financing Receivable, Impaired [Line Items]
Total		58,000
Level 3 | Impaired commercial real estate loan
Financing Receivable, Impaired [Line Items]
Total		463,000
Level 3 | Impaired commercial business loan
Financing Receivable, Impaired [Line Items]
Total		582,000
Nonrecurring
Financing Receivable, Impaired [Line Items]
Total	$ 0
Nonrecurring | Level 1
Financing Receivable, Impaired [Line Items]
Total		0
Nonrecurring | Level 1 | Impaired residential mortgage loan
Financing Receivable, Impaired [Line Items]
Total		0
Nonrecurring | Level 1 | Impaired commercial business loan
Financing Receivable, Impaired [Line Items]
Total		0
Nonrecurring | Level 2
Financing Receivable, Impaired [Line Items]
Total		0
Nonrecurring | Level 2 | Impaired residential mortgage loan
Financing Receivable, Impaired [Line Items]
Total		0
Nonrecurring | Level 2 | Impaired commercial business loan
Financing Receivable, Impaired [Line Items]
Total		0
Nonrecurring | Level 3
Financing Receivable, Impaired [Line Items]
Total		1,103,000
Nonrecurring | Level 3 | Impaired residential mortgage loan
Financing Receivable, Impaired [Line Items]
Total		58,000
Nonrecurring | Level 3 | Impaired commercial real estate loan
Financing Receivable, Impaired [Line Items]
Total		463,000
Nonrecurring | Level 3 | Impaired commercial business loan
Financing Receivable, Impaired [Line Items]
Total		$ 582,000

Fair Value - Schedule of Quanti

Fair Value - Schedule of Quantitative Information About Level 3 Fair Value Measurements (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)
Financing Receivable, Impaired [Line Items]
Total	$ 1,103
Impaired residential mortgage loan
Financing Receivable, Impaired [Line Items]
Total	58
Impaired residential mortgage loan | Level 3
Financing Receivable, Impaired [Line Items]
Total	$ 58
Weighted Average	10.00%
Impaired commercial real estate loan
Financing Receivable, Impaired [Line Items]
Total	$ 463
Impaired commercial real estate loan | Level 3
Financing Receivable, Impaired [Line Items]
Total	$ 463
Weighted Average	37.00%
Impaired commercial business loan
Financing Receivable, Impaired [Line Items]
Total	$ 582
Impaired commercial business loan | Level 3
Financing Receivable, Impaired [Line Items]
Total	$ 582
Weighted Average	64.00%

Fair Value - Carrying Amount an

Fair Value - Carrying Amount and Fair Value of Financial Instruments Included in the Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financial Assets:
Securities available for sale	$ 101,301	$ 101,560
Level 1
Financial Assets:
Securities available for sale	6,293	6,554
Level 2
Financial Assets:
Securities available for sale	94,874	94,870
Level 3
Financial Assets:
Securities available for sale	134	136
Carrying Amount
Financial Assets:
Cash and cash equivalents	40,256	17,568
Securities available for sale	101,301	101,560
Loans held for sale		68
Loans, net	574,736	515,435
Federal bank stock	4,906	4,861
Accrued interest receivable	2,228	1,815
Financial assets	723,427	641,307
Financial Liabilities:
Deposits	662,552	584,940
FHLB advances	41,250	44,000
Accrued interest payable	399	239
Financial liabilities	704,201	629,179
Estimate of Fair Value Measurement
Financial Assets:
Cash and cash equivalents	40,256	17,568
Securities available for sale	101,301	101,560
Loans held for sale		68
Loans, net	576,705	519,573
Federal bank stock	0	0
Accrued interest receivable	2,228	1,815
Financial assets	720,490	640,584
Financial Liabilities:
Deposits	664,374	582,458
FHLB advances	41,043	44,027
Accrued interest payable	399	239
Financial liabilities	705,816	626,724
Estimate of Fair Value Measurement | Level 1
Financial Assets:
Cash and cash equivalents	40,256	17,568
Securities available for sale	6,293	6,554
Loans held for sale		0
Loans, net	0	0
Accrued interest receivable	86	37
Financial assets	46,635	24,159
Financial Liabilities:
Deposits	489,904	423,693
FHLB advances	0	0
Accrued interest payable	17	7
Financial liabilities	489,921	423,700
Estimate of Fair Value Measurement | Level 2
Financial Assets:
Cash and cash equivalents	0	0
Securities available for sale	94,874	94,870
Loans held for sale		68
Loans, net	0	0
Accrued interest receivable	405	365
Financial assets	95,279	95,303
Financial Liabilities:
Deposits	174,470	158,765
FHLB advances	41,043	44,027
Accrued interest payable	382	232
Financial liabilities	215,895	203,024
Estimate of Fair Value Measurement | Level 3
Financial Assets:
Cash and cash equivalents	0	0
Securities available for sale	134	136
Loans held for sale		0
Loans, net	576,705	519,573
Accrued interest receivable	1,737	1,413
Financial assets	578,576	521,122
Financial Liabilities:
Deposits	0	0
FHLB advances	0	0
Accrued interest payable	0	0
Financial liabilities	$ 0	$ 0

Regulatory Matters - Schedule o

Regulatory Matters - Schedule of Regulatory Capital (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Total capital to risk-weighted assets: Amount
Actual	$ 63,229	$ 58,605
For capital adequacy purposes	40,818	36,945
To be well capitalized	51,022	46,181
Tier 1 capital to risk-weighted assets: Amount
Actual	57,282	53,050
For capital adequacy purposes	30,613	27,709
To be well capitalized	40,818	36,945
Common Equity Tier 1 capital to risk-weighted assets: Amount
Actual	57,282	53,050
For capital adequacy purposes	22,960	20,781
To be well capitalized	33,165	30,018
Tier 1 capital to average assets: Amount
Actual	57,282	53,050
For capital adequacy purposes	29,307	27,081
To be well capitalized	$ 36,634	$ 33,852
Total capital to risk-weighted assets: Ratio
Actual	12.39%	12.69%
For capital adequacy purposes	8.00%	8.00%
To be well capitalized	10.00%	10.00%
Tier 1 capital to risk-weighted assets: Ratios
Actual	11.23%	11.49%
For capital adequacy purposes	6.00%	6.00%
To be well capitalized	8.00%	8.00%
Common Equity Tier 1 capital to risk-weighted assets: Ratio
Actual	11.23%	11.49%
For capital adequacy purposes	4.50%	4.50%
To be well capitalized	6.50%	6.50%
Tier 1 capital to average assets: Ratio
Actual	7.82%	7.84%
For capital adequacy purposes	4.00%	4.00%
To be well capitalized	5.00%	5.00%

Accumulated Other Comprehensi57

Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income (Loss) by Component, Net of Tax (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 56,647	$ 54,851	$ 54,073	$ 52,839
Other comprehensive income before reclassification	153	(179)	421	1,162
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	104	(55)
Net of tax	153	(179)	525	1,107
Balance at end of period	59,753	55,216	59,753	55,216
Unrealized Gains and Losses on Available-for-Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(307)	1,038	(679)	(248)
Other comprehensive income before reclassification	153	(179)	421	1,162
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	104	(55)
Net of tax	153	(179)	525	1,107
Balance at end of period	(154)	859	(154)	859
Defined Benefit Pension Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(3,812)	(3,514)	(3,812)	(3,514)
Other comprehensive income before reclassification	0	0	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0	0
Net of tax	0	0	0	0
Balance at end of period	(3,812)	(3,514)	(3,812)	(3,514)
Totals
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(4,119)	(2,476)	(4,491)	(3,762)
Balance at end of period	$ (3,966)	$ (2,655)	$ (3,966)	$ (2,655)

Accumulated Other Comprehensi58

Accumulated Other Comprehensive Income (Loss) - Significant Amounts Reclassified Out of Each Component of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net gain on sale of available-for-sale securities	$ 0	$ 0	$ 350	$ 83
Provision for income taxes	(392)	(297)	(978)	(880)
Net income	1,707	1,058	3,704	2,790
Amount Reclassified From Accumulated Other Comprehensive Income | Unrealized gains and losses on available-for-sale securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net gain on sale of available-for-sale securities	0	0	350	83
Other than temporary impairment losses	0		(508)
Provision for income taxes	0	0	54	(28)
Net income	$ 0	$ 0	$ (104)	$ 55