Citizens & Northern (CZNC) 10-Q 3 May 18 2018 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2018	Apr. 30, 2018
Document Information [Line Items]
Entity Registrant Name	CITIZENS & NORTHERN CORP
Entity Central Index Key	810,958
Trading Symbol	cznc
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)		12,262,474
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Amendment Flag	false

Consolidated Balance Sheets (Cu

Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS
Noninterest-bearing	$ 18,740	$ 25,664
Interest-bearing	18,120	14,580
Total cash and due from banks	36,860	40,244
Available-for-sale debt securities, at fair value	341,133	355,937
Marketable equity security	956	971
Loans held for sale	225	765
Loans receivable	817,349	815,713
Allowance for loan losses	(9,049)	(8,856)
Loans, net	808,300	806,857
Bank-owned life insurance	20,180	20,083
Accrued interest receivable	3,899	4,048
Bank premises and equipment, net	15,482	15,432
Foreclosed assets held for sale	1,100	1,598
Deferred tax asset, net	4,120	3,289
Intangible assets - Goodwill and core deposit intangibles	11,953	11,954
Other assets	13,908	15,781
TOTAL ASSETS	1,258,116	1,276,959
LIABILITIES
Noninterest-bearing	250,839	241,214
Interest-bearing	767,242	767,235
Total deposits	1,018,081	1,008,449
Short-term borrowings	26,482	61,766
Long-term borrowings	18,122	9,189
Accrued interest and other liabilities	9,049	9,112
TOTAL LIABILITIES	1,071,734	1,088,516
STOCKHOLDERS' EQUITY
Preferred stock, $1,000 par value; authorized 30,000 shares; $1,000 liquidation preference per share; no shares issued	0	0
Common stock, par value $1.00 per share; authorized 20,000,000 shares; issued 12,655,171; outstanding 12,264,284 at March 31, 2018 and 12,214,525 December 31, 2017	12,655	12,655
Paid-in capital	71,716	72,035
Retained earnings	114,953	113,608
Treasury stock, at cost; 390,887 shares at March 31, 2018 and 440,646 shares at December 31, 2017	(7,404)	(8,348)
Accumulated other comprehensive loss	(5,538)	(1,507)
TOTAL STOCKHOLDERS' EQUITY	186,382	188,443
TOTAL LIABILITIES & STOCKHOLDERS' EQUITY	$ 1,258,116	$ 1,276,959

Consolidated Balance Sheets (C3

Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Mar. 31, 2018	Dec. 31, 2017
Preferred stock, par value (in dollars per share)	$ 1,000	$ 1,000
Preferred stock, authorized shares (in shares)	30,000	30,000
Preferred stock, liquidation preference per share (in dollars per share)	$ 1,000	$ 1,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, shares issued (in shares)	12,655,171	12,655,171
Common stock, shares outstanding (in shares)	12,264,284	12,214,525
Treasury stock, shares (in shares)	390,887	440,646

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Interest and fees on loans:
Taxable		$ 9,201	$ 8,374
Tax-exempt		556	450
Interest on mortgages held for sale		2	4
Interest on balances with depository institutions		50	32
Taxable		1,363	1,403
Tax-exempt		713	844
Dividends on marketable equity security		5	5
Total interest and dividend income		11,890	11,112
INTEREST EXPENSE
Interest on deposits		729	521
Interest on short-term borrowings		199	77
Interest on long-term borrowings		65	355
Total interest expense		993	953
Net interest income		10,897	10,159
Provision for loan losses		292	452
Net interest income after provision for loan losses		10,605	9,707
NONINTEREST INCOME
Brokerage revenue		212	156
Insurance commissions, fees and premiums		44	41
Net gains from sale of loans		184	166
Increase in cash surrender value of life insurance		97	90
Other noninterest income		450	458
Sub-total		4,406	3,864
Realized gains on securities, net		0	145
Total noninterest income		4,406	4,009
NONINTEREST EXPENSE
Salaries and wages		4,124	3,868
Pensions and other employee benefits		1,610	1,524
Occupancy expense, net		637	578
Furniture and equipment expense		271	313
Data processing expenses		641	575
Automated teller machine and interchange expense		322	294
Pennsylvania shares tax		336	336
Professional fees		276	187
Directors' fees		184	185
Other noninterest expense		1,494	1,438
Total noninterest expense		9,895	9,298
Income before income tax provision		5,116	4,418
Income tax provision		741	984
NET INCOME		$ 4,375	$ 3,434
EARNINGS PER COMMON SHARE - BASIC (in dollars per share)	[1]	$ 0.36	$ 0.28
EARNINGS PER COMMON SHARE - DILUTED (in dollars per share)	[1]	$ 0.36	$ 0.28
Trust and Asset Management [Member]
NONINTEREST INCOME
Revenue		$ 1,422	$ 1,180
Deposit Account [Member]
NONINTEREST INCOME
Revenue		1,204	1,101
Service Charges and Fees [Member]
NONINTEREST INCOME
Revenue		86	80
Debit Card [Member]
NONINTEREST INCOME
Revenue		579	520
Bank Servicing [Member]
NONINTEREST INCOME
Revenue		$ 128	$ 72
[1]	Basic and diluted earnings per share under the two-class method are determined on net income reported on the consolidated statements of income, less earnings allocated to nonvested restricted shares with nonforfeitable dividends (participating securities).

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net income	$ 4,375	$ 3,434
Unrealized (losses) gains on available-for-sale securities:
Unrealized holding (losses) gains on available-for-sale securities	(4,839)	636
Reclassification adjustment for gains realized in income	0	(145)
Other comprehensive (loss) gain on available-for-sale securities	(4,839)	491
Unfunded pension and postretirement obligations:
Changes from plan amendments and actuarial gains and losses included in accumulated other comprehensive (loss) gain	93	166
Amortization of prior service cost and net actuarial loss included in net periodic benefit cost	(5)	(6)
Other comprehensive gain on unfunded retirement obligations	88	160
Other comprehensive (loss) income before income tax	(4,751)	651
Income tax related to other comprehensive loss (income)	997	(228)
Net other comprehensive (loss) income	(3,754)	423
Comprehensive income	$ 621	$ 3,857

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 4,375	$ 3,434
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	292	452
Realized gains on available-for-sale securities, net	0	(145)
Unrealized loss on marketable equity security	15	0
Depreciation expense	412	404
Accretion and amortization on securities, net	268	314
Increase in cash surrender value of life insurance	(97)	(90)
Stock-based compensation and other expense	183	168
Deferred income taxes	166	273
(Increase) decrease in fair value of servicing rights	(20)	30
Gains on sales of loans, net	(184)	(166)
Origination of loans for sale	(5,327)	(5,558)
Proceeds from sales of loans	6,001	5,657
Decrease (increase) in accrued interest receivable and other assets	757	(171)
Decrease in accrued interest payable and other liabilities	(482)	(461)
Other	(29)	34
Net Cash Provided by Operating Activities	6,330	4,175
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from maturities of certificates of deposit	820	100
Purchase of certificates of deposit	(100)	(100)
Proceeds from sales of available-for-sale securities	0	13,856
Proceeds from calls and maturities of available-for-sale securities	10,516	12,771
Purchase of available-for-sale securities	(312)	(8,147)
Redemption of Federal Home Loan Bank of Pittsburgh stock	2,990	2,491
Purchase of Federal Home Loan Bank of Pittsburgh stock	(1,706)	(2,130)
Net increase in loans	(1,805)	(10,580)
Purchase of premises and equipment	(467)	(745)
Proceeds from sale of foreclosed assets	603	469
Other	51	46
Net Cash Provided by Investing Activities	10,590	8,031
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase (decrease) in deposits	9,632	(3,592)
Net decrease in short-term borrowings	(35,284)	(5,431)
Proceeds from long-term borrowings	9,000	0
Repayments of long-term borrowings	(67)	(66)
Sale of treasury stock	63	53
Common dividends paid	(2,928)	(2,736)
Net Cash Used in Financing Activities	(19,584)	(11,772)
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(2,664)	434
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	37,004	28,621
CASH AND CASH EQUIVALENTS, END OF PERIOD	34,340	29,055
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Assets acquired through foreclosure of real estate loans	72	216
Interest paid	978	951
Income taxes paid	125	200
Available-for-sale Securities [Member]
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Accrued purchase of available-for-sale debt security	$ 507	$ 0

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands		Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2016		12,655,171	541,943
Balance at Dec. 31, 2016		$ 12,655	$ (10,269)	$ 71,730	$ 112,790	$ (898)	$ 186,008
Net income					3,434		3,434
Other comprehensive income (loss), net						423	423
Cash dividends declared on common stock					(3,118)		(3,118)
Shares issued for dividend reinvestment plan (in shares)			(15,831)
Shares issued for dividend reinvestment plan			$ 300	82			382
Shares issued from treasury and redeemed related to exercise of stock options (in shares)			(2,804)
Shares issued from treasury and redeemed related to exercise of stock options			$ 52	1			53
Restricted stock granted (in shares)			(30,782)
Restricted stock granted			$ 583	(583)			0
Forfeiture of restricted stock (in shares)			3,038
Forfeiture of restricted stock			$ (56)	56			0
Stock-based compensation expense				168			168
Balance (in shares) at Mar. 31, 2017		12,655,171	495,564
Balance at Mar. 31, 2017		$ 12,655	$ (9,390)	71,454	113,106	(475)	187,350
Other comprehensive income (loss), net						423	423
Balance (in shares) at Dec. 31, 2017		12,655,171	440,646
Balance at Dec. 31, 2017		$ 12,655	$ (8,348)	72,035	113,608	(1,507)	188,443
Impact of change in enacted income tax rate (a) (Accounting Standards Update 2018-02 Member) at Dec. 31, 2017	[1]				325	(325)	0
Impact of change in enacted income tax rate (a) (Accounting Standards Update 2017-08 [Member]) at Dec. 31, 2017	[2]				(26)	26	0
Impact of change in enacted income tax rate (a) (Accounting Standards Update 2016-01 [Member]) at Dec. 31, 2017	[3]				(22)	22	0
Net income					4,375		4,375
Other comprehensive income (loss), net						(3,754)	(3,754)
Cash dividends declared on common stock					(3,307)		(3,307)
Shares issued for dividend reinvestment plan (in shares)			(16,371)
Shares issued for dividend reinvestment plan			$ 310	69			379
Shares issued from treasury and redeemed related to exercise of stock options (in shares)			(4,198)
Shares issued from treasury and redeemed related to exercise of stock options			$ 79	(16)			63
Restricted stock granted (in shares)			(34,552)
Restricted stock granted			$ 655	(655)			0
Forfeiture of restricted stock (in shares)			5,362
Forfeiture of restricted stock			$ (100)	100			0
Stock-based compensation expense				183			183
Balance (in shares) at Mar. 31, 2018		12,655,171	390,887
Balance at Mar. 31, 2018		$ 12,655	$ (7,404)	71,716	$ 114,953	(5,538)	186,382
Other comprehensive income (loss), net						$ (3,754)	$ (3,754)
[1]	As described in more detail in the Recent Accounting Pronouncements - Adopted section of Note 1, this reclassification resulted from adoption of Accounting Standards Update (ASU) 2018-02, Reclassification of Certain tax Effects from Accumulated Other Comprehensive Income, effective January 1, 2018.
[2]	As described in more detail in the Recent Accounting Pronouncements - Adopted section of Note 1, this reclassification resulted from adoption of ASU 2017-08, Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20), effective January 1, 2018.
[3]	As described in more detail in the Recent Accounting Pronouncements - Adopted section of Note 1, this reclassification resulted from adoption of ASU 2016-01, Recognition and Measurement of Financial Assets and Liabilities, effective January 1, 2018.

Consolidated Statements of Cha8

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Retained Earnings [Member]
Common stock, dividends, per share (in dollars per share)	$ 0.27	$ 0.26

Note 1 - Basis of Interim Prese

Note 1 - Basis of Interim Presentation and Status of Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Significant Accounting Policies [Text Block]	1. AND STATUS OF RECENT ACCOUNTING PRONOUNCEMENTS The consolidated financial statements include the accounts of Citizens & Northern Corporation and its subsidiaries, Citizens & Northern Bank (“C&N Bank”), Bucktail Life Insurance Company and Citizens & Northern Investment Corporation (collectively, “Corporation”), as well as C&N Bank’s wholly-owned subsidiary, C&N Financial Services Corporation. In December 2017, The consolidated financial information included herein, with the exception of the consolidated balance sheet dated December 31, 2017, not 2017 2018 Operating results reported for the three March 31, 2018 not December 31, 2018. RECENT ACCOUNTING PRONOUNCEMENTS The Financial Accounting Standards Board (FASB) issues Accounting Standards Updates (ASUs) to the FASB Accounting Standards Codification (ASC). This section provides a summary description of recent ASUs that have significant implications (elected or required) within the consolidated financial statements, or that management expects may Recent Accounting Pronouncements - Adopted In the first 2018, 2014 09, 606 five not 2014 09 not 13. In February 2018, 2018 02, not 2017 January 1, 2018. two January 1, 2018, $325,000 no In the first 2018, 2017 08, 310 20 no $26,000 January 1, 2018 In the first 2018, 2016 01, 2016 01 January 1, 2018 1 2 3 no $22,000 January 1, 2018 6. not 5. Recent ly Issued But Not Accounting Pronouncements ASU 2016 02, 842 842 not 12 not 842 first 2019. 2016 02 not not ASU 2016 13, 326 2016 13 2016 13 2016 13 2016 13 first 2020. first 2019; not 326 ASU 2017 04, 350 2 not may first 2020. not

Note 2 - Per Share Data

Note 2 - Per Share Data	3 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Earnings Per Share [Text Block]	2 . PER SHARE DATA Basic earnings per common share are calculated using the two two Diluted earnings per common share are calculated under the more dilutive of either the treasury method or the two 3 Months Ended March 31, March 31, 2018 2017 Basic Net income $ 4,375,000 $ 3,434,000 Less: Dividends and undistributed earnings allocated to participating securities (23,000 ) (18,000 ) Net income attributable to common shares $ 4,352,000 $ 3,416,000 Basic weighted-average common shares outstanding 12,189,471 12,085,729 Basic earnings per common share (a) $ 0.36 $ 0.28 Diluted Net income attributable to common shares $ 4,352,000 $ 3,416,000 Basic weighted-average common shares outstanding 12,189,471 12,085,729 Dilutive effect of potential common stock arising from stock options 32,785 45,681 Diluted weighted-average common shares outstanding 12,222,256 12,131,410 Diluted earnings per common share (a) $ 0.36 $ 0.28 (a) Basic and diluted earnings per share under the two The weighted-average number of nonvested restricted shares outstanding was 65,204 three March 31, 2018 65,208 three March 31, 2017. Anti-dilutive stock options are excluded from net income per share calculations. There were no first 2018 2017.

Note 3 - Comprehensive Income

Note 3 - Comprehensive Income	3 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Comprehensive Income (Loss) Note [Text Block]	3 . COMPREHENSIVE INCOME Comprehensive income is the total of ( 1 2 (In Thousands) Before-Tax Income Tax Net-of-Tax Amount Effect Amount Three Months Ended March 31, 2018 Other comprehensive loss on available-for-sale securities, Unrealized holding losses on available-for-sale securities $ (4,839 ) $ 1,015 $ (3,824 ) Unfunded pension and postretirement obligations: Changes from plan amendments and actuarial gains and losses included in other comprehensive income 93 (19 ) 74 Amortization of prior service cost and net actuarial loss included in net periodic benefit cost (5 ) 1 (4 ) Other comprehensive income on unfunded retirement obligations 88 (18 ) 70 Total other comprehensive loss $ (4,751 ) $ 997 $ (3,754 ) (In Thousands) Before-Tax Income Tax Net-of-Tax Amount Effect Amount Three Months Ended March 31, 2017 Unrealized gains on available-for-sale securities: Unrealized holding gains on available-for-sale securities $ 636 $ (223 ) $ 413 Reclassification adjustment for (gains) realized in income (145 ) 51 (94 ) Other comprehensive income on available-for-sale securities 491 (172 ) 319 Unfunded pension and postretirement obligations: Changes from plan amendments and actuarial gains and losses included in other comprehensive income 166 (58 ) 108 Amortization of prior service cost and net actuarial loss included in net periodic benefit cost (6 ) 2 (4 ) Other comprehensive income on unfunded retirement obligations 160 (56 ) 104 Total other comprehensive income $ 651 $ (228 ) $ 423 Changes in the components of accumulated other comprehensive loss are as follows and are presented net of tax: (In Thousands) Accumulated Unrealized Unfunded Other (Losses) Retirement Comprehensive on Securities Obligations Loss Three Months Ended March 31, 2018 Balance, beginning of period $ (1,566 ) $ 59 $ (1,507 ) Impact of change in enacted income tax rate (337 ) 12 (325 ) Impact of change in the method of premium amortization of callable debt securities 26 0 26 Impact of change in the method of accounting for marketable equity security 22 0 22 Other comprehensive (loss) income during three months ended March 31, 2018 (3,824 ) 70 (3,754 ) Balance, end of period $ (5,679 ) $ 141 $ (5,538 ) Three Months Ended March 31, 2017 Balance, beginning of period $ (949 ) $ 51 $ (898 ) Other comprehensive income during three months ended March 31, 2017 319 104 423 Balance, end of period $ (630 ) $ 155 $ (475 ) Items reclassified out of each component of other comprehensive (loss) income are as follows: For the Three Months Ended March 31, 2018 (In Thousands) Reclassified from Details about Accumulated Other Accumulated Other Affected Line Item in the Consolidated Comprehensive Loss Components C omprehensive Loss Statements of Income Amortization of defined benefit pension and postretirement items: Prior service cost $ (8 ) Other noninterest expense Actuarial loss 3 Other noninterest expense (5 ) Total before tax 1 Income tax provision (4 ) Net of tax Total reclassifications for the period $ (4 ) For the Three Months Ended March 31, 2017 (In Thousands) Reclassified from Details about Accumulated Other Accumulated Other Affected Line Item in the Consolidated Comprehensive Loss Components C omprehensive Loss Statements of Income Unrealized gains and losses on available-for-sale securities $ (145 ) Realized gains on securities, net 51 Income tax provision (94 ) Net of tax Amortization of defined benefit pension and postretirement items: Prior service cost (8 ) Other noninterest expense Actuarial loss 2 Other noninterest expense (6 ) Total before tax 2 Income tax provision (4 ) Net of tax Total reclassifications for the period $ (98 )

Note 4 - Cash and Due From Bank

Note 4 - Cash and Due From Banks	3 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Cash and Cash Equivalents Disclosure [Text Block]	4 . CASH AND DUE FROM BANKS Cash and due from banks at March 31, 2018 December 31, 2017 (In thousands) Mar ch 31, Dec. 31, 2018 2017 Cash and cash equivalents $ 34,340 $ 37,004 Certificates of deposit 2,520 3,240 Total cash and due from banks $ 36,860 $ 40,244 Certificates of deposit are issues by U.S. banks with original maturities greater than three The Corporation is required to maintain reserves against deposit liabilities in the form of cash and balances with the Federal Reserve Bank of Philadelphia. The reserves are based on deposit levels, account activity, and other services provided by the Federal Reserve Bank. Required reserves were $16,376,000 March 31, 2018 $17,178,000 December 31, 2017.

Note 5 - Fair Value Measurement

Note 5 - Fair Value Measurements and Fair Values of Financial Instruments	3 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Fair Value Disclosures [Text Block]	5 . FAIR VALUE MEASUREMENTS AND FAIR VALUES OF FINANCIAL INSTRUMENTS The Corporation measures certain assets at fair value. Fair value is defined as the price that would be received to sell an asset in an orderly transaction between market participants at the measurement date. FASB Accounting Standards Codification (ASC) topic 820, three Level 1 Level 2 1 2 not Level 3 3 The Corporation monitors and evaluates available data relating to fair value measurements on an ongoing basis and recognizes transfers among the levels of the fair value hierarchy as of the date of an event or change in circumstances that affects the valuation method chosen. Examples of such changes may At March 31, 2018 December 31, 2017, March 3 1, 201 8 Quoted Prices Other in Active Observable Unobservable Total Markets Inputs Inputs Fair (In Thousands) (Level 1) (Level 2) (Level 3) Value Recurring fair value measurements AVAILABLE-FOR-SALE DEBT SECURITIES: Obligations of U.S. Government agencies $ 0 $ 7,803 $ 0 $ 7,803 Obligations of states and political subdivisions: Tax-exempt 0 103,403 0 103,403 Taxable 0 24,038 0 24,038 Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: Residential pass-through securities 0 49,335 0 49,335 Residential collateralized mortgage obligations 0 124,008 0 124,008 Commercial mortgage-backed securities 0 32,546 0 32,546 Total available-for-sale debt securities 0 341,133 0 341,133 Marketable equity security 956 0 0 956 Servicing rights 0 0 1,369 1,369 Total recurring fair value measurements $ 956 $ 341,133 $ 1,369 $ 343,458 Nonrecurring fair value measurements Impaired loans with a valuation allowance $ 0 $ 0 $ 4,368 $ 4,368 Valuation allowance 0 0 (1,289 ) (1,289 ) Impaired loans, net 0 0 3,079 3,079 Foreclosed assets held for sale 0 0 1,100 1,100 Total nonrecurring fair value measurements $ 0 $ 0 $ 4,179 $ 4,179 December 31, 201 7 Quoted Prices Other in Active Observable Unobservable Total Markets Inputs Inputs Fair (In Thousands) (Level 1) (Level 2) (Level 3) Value Recurring fair value measurements AVAILABLE-FOR-SALE DEBT SECURITIES: Obligations of U.S. Government agencies $ 0 $ 7,873 $ 0 $ 7,873 Obligations of states and political subdivisions: Tax-exempt 0 105,111 0 105,111 Taxable 0 25,573 0 25,573 Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: Residential pass-through securities 0 52,347 0 52,347 Residential collateralized mortgage obligations 0 131,814 0 131,814 Commercial mortgage-backed securities 0 33,219 0 33,219 Total available-for-sale debt securities 0 355,937 0 355,937 Marketable equity security 971 0 0 971 Servicing rights 0 0 1,299 1,299 Total recurring fair value measurements $ 971 $ 355,937 $ 1,299 $ 358,207 Nonrecurring fair value measurements Impaired loans with a valuation allowance $ 0 $ 0 $ 3,776 $ 3,776 Valuation allowance 0 0 (1,183 ) (1,183 ) Impaired loans, net 0 0 2,593 2,593 Foreclosed assets held for sale 0 0 1,598 1,598 Total nonrecurring fair value measurements $ 0 $ 0 $ 4,191 $ 4,191 Management’s evaluation and selection of valuation techniques and the unobservable inputs used in determining the fair values of assets valued using Level 3 At March 31, 2018 December 31, 2017, 3 Fair Value at 3 /3 1 /1 8 Valuation Unobservable Method or Value As of Asset (In Thousands) Technique Input(s) 3 /3 1/18 Servicing rights $ 1,369 Discounted cash flow Discount rate 13.00 % Rate used through modeling period Loan prepayment speeds 118.00 % Weighted-average PSA Servicing fees 0.25 % of loan balances 4.00 % of payments are late 5.00 % late fees assessed $ 1.94 Miscellaneous fees per account per month Servicing costs $ 6.00 Monthly servicing cost per account $ 24.00 Additional monthly servicing cost per loan on loans more than 30 days delinquent 1.50 % of loans more than 30 days delinquent 3.00 % annual increase in servicing costs Fair Value at 12/31/1 7 Valuation Unobservable Method or Value As of Asset (In Thousands) Technique Input(s) 12/31/1 7 Servicing rights $ 1,299 Discounted cash flow Discount rate 13.00 % Rate used through modeling period Loan prepayment speeds 140.00 % Weighted-average PSA Servicing fees 0.25 % of loan balances 4.00 % of payments are late 5.00 % late fees assessed $ 1.94 Miscellaneous fees per account per month Servicing costs $ 6.00 Monthly servicing cost per account $ 24.00 Additional monthly servicing cost per loan on loans more than 30 days delinquent 1.50 % of loans more than 30 days delinquent 3.00 % annual increase in servicing costs The fair value of servicing rights is affected by expected future interest rates. Increases (decreases) in future expected interest rates tend to increase (decrease) the fair value of the Corporation’s servicing rights because of changes in expected prepayment behavior by the borrowers on the underlying loans. Unrealized gains (losses) in fair value of servicing rights are included in Loan servicing fees, net, in the unaudited consolidated statements of income. Following is a reconciliation of activity for Level 3 (In Thousands) Three Months Ended Mar ch 31, 2018 Mar ch 31, 2017 Servicing rights balance, beginning of period $ 1,299 $ 1,262 Issuances of servicing rights 50 46 Unrealized gains (losses) included in earnings 20 (30 ) Servicing rights balance, end of period $ 1,369 $ 1,278 Loans are classified as impaired when, based on current information and events, it is probable that the Corporation will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Foreclosed assets held for sale consist of real estate acquired by foreclosure. For impaired commercial loans secured by real estate and foreclosed assets held for sale, estimated fair values are determined primarily using values from third At March 31, 2018 December 31, 2017, 3 (In Thousands, Except Weighted- Percentages) Valuation Average) Balance at Allowance at Fair Value at Valuation Unobservable Discount at Asset 3/31/18 3/31/18 3/31/18 Technique Inputs 3/31/18 Impaired loans: Residential mortgage loans - first liens $ 515 $ 122 $ 393 Sales comparison Discount to appraised value 26 % Commercial: Commercial loans secured by real estate 2,607 884 1,723 Sales comparison Discount to appraised value 16 % Commercial and industrial 75 75 0 Sales comparison Discount to appraised value 100 % Loans secured by farmland 494 50 444 Sales comparison Discount to appraised value 53 % Agricultural Loans 677 158 519 Sales comparison Discount to appraised value 36 % Total impaired loans $ 4,368 $ 1,289 $ 3,079 Foreclosed assets held for sale - real estate: Residential (1-4 family) $ 396 $ 0 $ 396 Sales comparison Discount to appraised value 32 % Land 632 0 632 Sales comparison Discount to appraised value 35 % Commercial real estate 72 0 72 Sales comparison Discount to appraised value 76 % Total foreclosed assets held for sale $ 1,100 $ 0 $ 1,100 (In Thousands, Except Weighted- Percentages) Valuation Average Balance at Allowance at Fair Value at Valuation Unobservable Discount at Asset 12/31/17 12/31/17 12/31/17 Technique Inputs 12/31/17 Impaired loans: Residential mortgage loans - first liens $ 515 $ 122 $ 393 Sales comparison Discount to appraised value 26 % Commercial: Commercial loans secured by real estate 2,641 919 1,722 Sales comparison Discount to appraised value 16 % Commercial and industrial 126 92 34 Sales comparison Discount to appraised value 72 % Loans secured by farmland 494 50 444 Sales comparison Discount to appraised value 53 % Total impaired loans $ 3,776 $ 1,183 $ 2,593 Foreclosed assets held for sale - real estate: Residential (1-4 family) $ 721 $ 0 $ 721 Sales comparison Discount to appraised value 37 % Land 632 0 632 Sales comparison Discount to appraised value 35 % Commercial real estate 245 0 245 Sales comparison Discount to appraised value 71 % Total foreclosed assets held for sale $ 1,598 $ 0 $ 1,598 Certain of the Corporation’s financial instruments are not not may not may not The estimated fair values, and related carrying amounts, of the Corporation’s financial instruments that are not (In Thousands) Fair Value March 31, 2018 December 31, 2017 Hierarchy Carrying Fair Carrying Fair Level Amount Value Amount Value Financial assets: Cash and cash equivalents Level 1 $ 34,340 $ 34,340 $ 37,004 $ 37,004 Certificates of deposit Level 2 2,520 2,508 3,240 3,234 Restricted equity securities (included in Other Assets) Level 2 6,228 6,228 6,556 6,556 Loans held for sale Level 1 225 225 765 765 Loans, net Level 3 808,300 808,653 806,857 789,891 Accrued interest receivable Level 2 3,899 3,899 4,048 4,048 Financial liabilities: Deposits with no stated maturity Level 2 793,351 793,351 794,778 794,778 Time deposits Level 2 224,730 224,814 213,671 213,734 Short-term borrowings Level 2 26,482 26,263 61,766 61,643 Long-term borrowings Level 2 18,122 18,155 9,189 9,256 Accrued interest payable Level 2 61 61 46 46 The Corporation has commitments to extend credit and has issued standby letters of credit. Standby letters of credit are conditional guarantees of performance by a customer to a third not

Note 6 - Securities

Note 6 - Securities	3 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	6 . SECURITIES Amortized cost and fair value of available-for-sale debt securities at March 31, 2018 December 31, 2017 March 31, 2018 Gross Gross Unrealized Unrealized Amortized Holding Holding Fair (In Thousands) Cost Gains Losses Value Obligations of U.S. Government agencies $ 8,023 $ 0 $ (220 ) $ 7,803 Obligations of states and political subdivisions: Tax-exempt 103,598 1,651 (1,846 ) 103,403 Taxable 24,140 98 (200 ) 24,038 Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: Residential pass-through securities 50,880 66 (1,611 ) 49,335 Residential collateralized mortgage obligations 127,886 44 (3,922 ) 124,008 Commercial mortgage-backed securities 33,793 0 (1,247 ) 32,546 Total available-for-sale-debt securities $ 348,320 $ 1,859 $ (9,046 ) $ 341,133 December 31, 2017 Gross Gross Unrealized Unrealized Amortized Holding Holding Fair (In Thousands) Cost Gains Losses Value Obligations of U.S. Government agencies $ 8,026 $ 0 $ (153 ) $ 7,873 Obligations of states and political subdivisions: Tax-exempt 103,673 2,291 (853 ) 105,111 Taxable 25,431 226 (84 ) 25,573 Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: Residential pass-through securities 52,992 79 (724 ) 52,347 Residential collateralized mortgage obligations 134,314 110 (2,610 ) 131,814 Commercial mortgage-backed securities 33,881 4 (666 ) 33,219 Total available-for-sale debt securities $ 358,317 $ 2,710 $ (5,090 ) $ 355,937 The following table presents gross unrealized losses and fair value of available-for-sale debt securities with unrealized loss positions that are not March 31, 2018 December 31, 2017: March 3 1, 2018 Less Than 12 Months 12 Months or More Total (In Thousands) Fair Unrealized Fair Unrealized Fair Unrealized Value Losses Value Losses Value Losses Obligations of U.S. Government agencies $ 0 $ 0 $ 7,803 $ (220 ) $ 7,803 $ (220 ) Obligations of states and political subdivisions: Tax-exempt 30,641 (439 ) 23,636 (1,407 ) 54,277 (1,846 ) Taxable 14,526 (143 ) 2,245 (57 ) 16,771 (200 ) Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: Residential pass-through securities 27,259 (718 ) 21,227 (893 ) 48,486 (1,611 ) Residential collateralized mortgage obligations 55,506 (1,210 ) 64,378 (2,712 ) 119,884 (3,922 ) Commercial mortgage-backed securities 18,267 (539 ) 14,279 (708 ) 32,546 (1,247 ) Total temporarily impaired available-for-sale debt securities $ 146,199 $ (3,049 ) $ 133,568 $ (5,997 ) $ 279,767 $ (9,046 ) December 31, 2017 Less Than 12 Months 12 Months or More Total (In Thousands) Fair Unrealized Fair Unrealized Fair Unrealized Value Losses Value Losses Value Losses Obligations of U.S. Government agencies $ 0 $ 0 $ 7,873 $ (153 ) $ 7,873 $ (153 ) Obligations of states and political subdivisions: Tax-exempt 19,050 (135 ) 24,391 (718 ) 43,441 (853 ) Taxable 9,279 (45 ) 2,116 (39 ) 11,395 (84 ) Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: Residential pass-through securities 25,255 (242 ) 22,549 (482 ) 47,804 (724 ) Residential collateralized mortgage obligations 50,812 (589 ) 68,558 (2,021 ) 119,370 (2,610 ) Commercial mortgage-backed securities 14,713 (173 ) 14,569 (493 ) 29,282 (666 ) Total temporarily impaired available-for-sale debt securities $ 119,109 $ (1,184 ) $ 140,056 $ (3,906 ) $ 259,165 $ (5,090 ) Gross realized gains and losses from available-for-sale securities were as follows: (In Thousands) 3 Months Ended Mar ch 31, Mar ch 31, 2018 2017 Gross realized gains from sales $ 0 $ 161 Gross realized losses from sales 0 (16 ) Net realized gains $ 0 $ 145 The amortized cost and fair value of available-for-sale debt securities by contractual maturity are shown in the following table as of March 31, 2018. may may Amortized Fair (In Thousands) Cost Value Due in one year or less $ 18,713 $ 18,844 Due from one year through five years 63,703 63,793 Due from five years through ten years 33,100 32,226 Due after ten years 20,245 20,381 Sub-total 135,761 135,244 Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: Residential pass-through securities 50,880 49,335 Residential collateralized mortgage obligations 127,886 124,008 Commercial mortgage-backed securities 33,793 32,546 Total $ 348,320 $ 341,133 The Corporation’s mortgage-backed securities have stated maturities that may one Investment securities carried at $209,321,000 March 31, 2018 $217,925,000 December 31, 2017 8 Management evaluates securities for other-than-temporary impairment (OTTI) at least on a quarterly basis, and more frequently when economic or market conditions warrant such evaluation. Consideration is given to ( 1 2 3 not no three March 31, 2018 2017. A summary of information management considered in evaluating debt and equity securities for other-than-temporary impairment (“OTTI”) at March 31, 2018 Debt Securities At March 31, 2018, March 31, 2018 December 31, 2017 Equity Securities The Corporation’s marketable equity security at March 31, 2018 December 31, 2017 one 2016 01, $22,000 January 1, 2018. March 31, 2018, $44,000, December 31, 2017 $29,000, $15,000 three 31, 2018. The Corporation had no first 2018 2017. C&N Bank is a member of the Federal Home Loan Bank of Pittsburgh (FHLB-Pittsburgh), which is one 11 no $5,142,000 March 31, 2018 $6,426,000 December 31, 2017. not March 31, 2018 December 31, 2017.

Note 7 - Loans

Note 7 - Loans	3 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	7 . LOANS The loans receivable portfolio is segmented into residential mortgage, commercial and consumer loans. Loans outstanding at March 31, 2018 December 31, 2017 Summary of Loans by Type (In Thousands) March 31, Dec. 31, 2018 2017 Residential mortgage: Residential mortgage loans - first liens $ 358,786 $ 359,987 Residential mortgage loans - junior liens 25,870 25,325 Home equity lines of credit 34,595 35,758 1-4 Family residential construction 25,790 26,216 Total residential mortgage 445,041 447,286 Commercial: Commercial loans secured by real estate 161,571 159,266 Commercial and industrial 89,346 88,276 Political subdivisions 56,224 59,287 Commercial construction and land 13,232 14,527 Loans secured by farmland 7,015 7,255 Multi-family (5 or more) residential 7,621 7,713 Agricultural loans 5,803 6,178 Other commercial loans 16,079 10,986 Total commercial 356,891 353,488 Consumer 15,417 14,939 Total 817,349 815,713 Less: allowance for loan losses (9,049 ) (8,856 ) Loans, net $ 808,300 $ 806,857 The Corporation grants loans to individuals as well as commercial and tax-exempt entities. Commercial, residential and personal loans are made to customers geographically concentrated in the Pennsylvania and New York counties that comprise the market serviced by Citizens & Northern Bank. Although the Corporation has a diversified loan portfolio, a significant portion of its debtors’ ability to honor their contracts is dependent on the local economic conditions within the region. There is no 10% March 31, 2018 December 31, 2017. The Corporation maintains an allowance for loan losses that represents management’s estimate of the losses inherent in the loan portfolio as of the balance sheet date and recorded as a reduction of the investment in loans. The allowance for loan losses is maintained at a level considered adequate to provide for losses that can be reasonably anticipated. Management performs a quarterly evaluation of the adequacy of the allowance. The allowance is based on the Corporation’s past loan loss experience, known and inherent risks in the portfolio, adverse situations that may may March 31, 2018 December 31, 2017, no Transactions within the allowance for loan losses, summarized by segment and class, for the three March 31, 2018 2017 Three Months Ended March 31, 2018 Dec. 31, March 31, (In Thousands) 2017 Balance Charge-offs Recoveries Provision (Credit) 2018 Balance Allowance for Loan Losses: Residential mortgage: Residential mortgage loans - first liens $ 3,200 $ (53 ) $ 1 $ (81 ) $ 3,067 Residential mortgage loans - junior liens 224 0 1 126 351 Home equity lines of credit 296 0 0 (10 ) 286 1-4 Family residential construction 243 0 0 (4 ) 239 Total residential mortgage 3,963 (53 ) 2 31 3,943 Commercial: Commercial loans secured by real estate 2,584 (21 ) 0 72 2,635 Commercial and industrial 1,065 0 2 (31 ) 1,036 Commercial construction and land 150 0 0 (13 ) 137 Loans secured by farmland 105 0 0 (3 ) 102 Multi-family (5 or more) residential 172 0 0 (3 ) 169 Agricultural loans 57 0 0 148 205 Other commercial loans 102 0 0 47 149 Total commercial 4,235 (21 ) 2 217 4,433 Consumer 159 (41 ) 12 44 174 Unallocated 499 0 0 0 499 Total Allowance for Loan Losses $ 8,856 $ (115 ) $ 16 $ 292 $ 9,049 Three Months Ended March 31, 2017 Dec. 31, March 31, (In Thousands) 2016 Balance Charge-offs Recoveries Provision (Credit) 2017 B alance Allowance for Loan Losses: Residential mortgage: Residential mortgage loans - first liens $ 3,033 $ (63 ) $ 2 $ 153 $ 3,125 Residential mortgage loans - junior liens 258 0 1 (3 ) 256 Home equity lines of credit 350 0 0 (12 ) 338 1-4 Family residential construction 249 0 0 (9 ) 240 Total residential mortgage 3,890 (63 ) 3 129 3,959 Commercial: Commercial loans secured by real estate 2,380 (96 ) 0 401 2,685 Commercial and industrial 999 0 1 (94 ) 906 Commercial construction and land 162 0 0 7 169 Loans secured by farmland 110 0 0 1 111 Multi-family (5 or more) residential 241 0 0 (5 ) 236 Agricultural loans 40 0 0 (1 ) 39 Other commercial loans 115 0 0 (6 ) 109 Total commercial 4,047 (96 ) 1 303 4,255 Consumer 138 (41 ) 15 20 132 Unallocated 398 0 0 0 398 Total Allowance for Loan Losses $ 8,473 $ (200 ) $ 19 $ 452 $ 8,744 In the evaluation of the loan portfolio, management determines two 1 2 In determining the larger loan relationships for detailed assessment under the specific allowance component, the Corporation uses an internal risk rating system. Under the risk rating system, the Corporation classifies problem or potential problem loans as “Special Mention,” “Substandard,” or “Doubtful” on the basis of currently existing facts, conditions and values. Substandard loans include those characterized by the distinct possibility that the Corporation will sustain some loss if the deficiencies are not not not The following tables summarize the aggregate credit quality classification of outstanding loans by risk rating as of March 31, 2018 December 31, 2017: March 31, 2018 (In Thousands) Special Pass Mention Substandard Doubtful Total Residential Mortgage: Residential mortgage loans - first liens $ 349,713 $ 313 $ 8,708 $ 52 $ 358,786 Residential mortgage loans - junior liens 25,328 100 442 0 25,870 Home equity lines of credit 34,045 99 451 0 34,595 1-4 Family residential construction 25,790 0 0 0 25,790 Total residential mortgage 434,876 512 9,601 52 445,041 Commercial: Commercial loans secured by real estate 152,743 924 7,904 0 161,571 Commercial and Industrial 82,445 5,412 1,478 11 89,346 Political subdivisions 56,224 0 0 0 56,224 Commercial construction and land 13,155 0 77 0 13,232 Loans secured by farmland 5,001 626 1,376 12 7,015 Multi-family (5 or more) residential 7,047 0 574 0 7,621 Agricultural loans 4,851 268 684 0 5,803 Other commercial loans 16,007 0 72 0 16,079 Total commercial 337,473 7,230 12,165 23 356,891 Consumer 15,383 0 34 0 15,417 Totals $ 787,732 $ 7,742 $ 21,800 $ 75 $ 817,349 December 31, 2017 (In Thousands) Special Pass Mention Substandard Doubtful Total Residential Mortgage: Residential mortgage loans - first liens $ 350,609 $ 307 $ 9,019 $ 52 $ 359,987 Residential mortgage loans - junior liens 24,795 104 426 0 25,325 Home equity lines of credit 35,233 61 464 0 35,758 1-4 Family residential construction 26,216 0 0 0 26,216 Total residential mortgage 436,853 472 9,909 52 447,286 Commercial: Commercial loans secured by real estate 150,806 936 7,524 0 159,266 Commercial and Industrial 82,724 3,896 1,645 11 88,276 Political subdivisions 59,287 0 0 0 59,287 Commercial construction and land 14,449 0 78 0 14,527 Loans secured by farmland 5,283 581 1,379 12 7,255 Multi-family (5 or more) residential 7,130 0 583 0 7,713 Agricultural loans 5,203 270 705 0 6,178 Other commercial loans 10,913 0 73 0 10,986 Total commercial 335,795 5,683 11,987 23 353,488 Consumer 14,853 0 86 0 14,939 Totals $ 787,501 $ 6,155 $ 21,982 $ 75 $ 815,713 The general component of the allowance for loan losses covers pools of loans including commercial loans not not 1 2 $400,000 March 31, 2018 December 31, 2017, five three Qualitative risk factors are evaluated for the impact on each of the three The qualitative factors used in the general component calculations are designed to address credit risk characteristics associated with each segment. The Corporation’s credit risk associated with all of the segments is significantly impacted by these factors, which include economic conditions within its market area, the Corporation’s lending policies, changes or trends in the portfolio, risk profile, competition, regulatory requirements and other factors. Further, the residential mortgage segment is significantly affected by the values of residential real estate that provide collateral for the loans. The majority of the Corporation’s commercial segment loans (approximately 53% March 31, 2018) Loans are classified as impaired, when, based on current information and events, it is probable that the Corporation will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not The scope of loans reviewed individually each quarter to determine if they are impaired include all commercial loan relationships greater than $200,000 $400,000 one not not not March 31, 2018 December 31, 2017. $200,000 $400,000 $100,000 The following tables present a summary of loan balances and the related allowance for loan losses summarized by portfolio segment and class for each impairment method used as of March 31, 2018 December 31, 2017: March 31, 2018 Loans: Allowance for Loan Losses: (In Thousands) Individually Collectively Individually Collectively Evaluated Evaluated Totals Evaluated Evaluated Totals Residential mortgage: Residential mortgage loans - first liens $ 969 $ 357,817 $ 358,786 $ 0 $ 3,067 $ 3,067 Residential mortgage loans - junior liens 300 25,570 25,870 122 229 351 Home equity lines of credit 0 34,595 34,595 0 286 286 1-4 Family residential construction 0 25,790 25,790 0 239 239 Total residential mortgage 1,269 443,772 445,041 122 3,821 3,943 Commercial: Commercial loans secured by real estate 5,982 155,589 161,571 884 1,751 2,635 Commercial and industrial 498 88,848 89,346 157 879 1,036 Political subdivisions 0 56,224 56,224 0 0 0 Commercial construction and land 0 13,232 13,232 0 137 137 Loans secured by farmland 1,362 5,653 7,015 50 52 102 Multi-family (5 or more) residential 392 7,229 7,621 0 169 169 Agricultural loans 684 5,119 5,803 158 47 205 Other commercial loans 0 16,079 16,079 0 149 149 Total commercial 8,918 347,973 356,891 1,249 3,184 4,433 Consumer 19 15,398 15,417 0 174 174 Unallocated 499 Total $ 10,206 $ 807,143 $ 817,349 $ 1,371 $ 7,179 $ 9,049 December 31, 2017 Loans: Allowance for Loan Losses: (In Thousands) Individually Collectively Individually Collectively Evaluated Evaluated Totals Evaluated Evaluated Totals Residential mortgage: Residential mortgage loans - first liens $ 984 $ 359,003 $ 359,987 $ 0 $ 3,200 $ 3,200 Residential mortgage loans - junior liens 302 25,023 25,325 122 102 224 Home equity lines of credit 0 35,758 35,758 0 296 296 1-4 Family residential construction 0 26,216 26,216 0 243 243 Total residential mortgage 1,286 446,000 447,286 122 3,841 3,963 Commercial: Commercial loans secured by real estate 5,873 153,393 159,266 919 1,665 2,584 Commercial and industrial 568 87,708 88,276 188 877 1,065 Political subdivisions 0 59,287 59,287 0 0 0 Commercial construction and land 0 14,527 14,527 0 150 150 Loans secured by farmland 1,365 5,890 7,255 50 55 105 Multi-family (5 or more) residential 392 7,321 7,713 0 172 172 Agricultural loans 7 6,171 6,178 0 57 57 Other commercial loans 0 10,986 10,986 0 102 102 Total commercial 8,205 345,283 353,488 1,157 3,078 4,235 Consumer 20 14,919 14,939 0 159 159 Unallocated 499 Total $ 9,511 $ 806,202 $ 815,713 $ 1,279 $ 7,078 $ 8,856 Summary information related to impaired loans at March 31, 2018 December 31, 2017 (In Thousands) March 31, 2018 December 31, 2017 Unpaid Unpaid Principal Recorded Related Principal Recorded Related Balance Investment Allowance Balance Investment Allowance With no related allowance recorded: Residential mortgage loans - first liens $ 725 $ 696 $ 0 $ 740 $ 711 $ 0 Residential mortgage loans - junior liens 58 58 0 60 60 0 Commercial loans secured by real estate 3,375 3,375 0 3,230 3,230 0 Commercial and industrial 92 92 0 119 119 0 Loans secured by farmland 868 868 0 871 871 0 Multi-family (5 or more) residential 987 392 0 987 392 0 Agricultural loans 7 7 0 8 8 0 Consumer 19 19 0 20 20 0 Total with no related allowance recorded 6,131 5,507 0 6,035 5,411 0 With a related allowance recorded: Residential mortgage loans - first liens 273 273 0 273 273 0 Residential mortgage loans - junior liens 242 242 122 242 242 122 Commercial loans secured by real estate 2,607 2,607 884 2,641 2,641 919 Commercial and industrial 406 406 157 449 449 188 Loans secured by farmland 494 494 50 495 495 50 Agricultural loans 677 677 158 0 0 0 Total with a related allowance recorded 4,699 4,699 1,371 4,100 4,100 1,279 Total $ 10,830 $ 10,206 $ 1,371 $ 10,135 $ 9,511 $ 1,279 In the table immediately above, two one first one The average balance of impaired loans and interest income recognized on impaired loans is as follows: Interest Income Recognized on Average Investment in Impaired Loans Impaired Loans on a Cash Basis (In Thousands) 3 Months Ended 3 Months Ended March 31, March 31, 2018 2017 2018 2017 Residential mortgage: Residential mortgage loans - first lien $ 1,046 $ 748 $ 19 $ 9 Residential mortgage loans - junior lien 301 67 3 1 Total residential mortgage 1,347 815 22 10 Commercial: Commercial loans secured by real estate 5,882 6,889 35 56 Commercial and industrial 508 247 6 3 Loans secured by farmland 1,364 1,390 6 8 Multi-family (5 or more) residential 392 392 0 0 Agricultural loans 346 12 11 1 Total commercial 8,492 8,930 58 68 Consumer 19 33 0 0 Total $ 9,858 $ 9,778 $ 80 $ 78 Loans are placed on nonaccrual status for all classes of loans when, in the opinion of management, collection of interest is doubtful. Any unpaid interest previously accrued on those loans is reversed from income. Interest income is not six no The breakdown by portfolio segment and class of nonaccrual loans and loans past due ninety (In Thousands) March 31, 2018 December 31, 2017 Past Due Past Due 90+ Days and 90+ Days and Accruing Nonaccrual Accruing Nonaccrual Residential mortgage: Residential mortgage loans - first liens $ 1,840 $ 4,354 $ 2,340 $ 5,131 Residential mortgage loans - junior liens 10 242 105 242 Home equity lines of credit 230 42 203 44 Total residential mortgage 2,080 4,638 2,648 5,417 Commercial: Commercial loans secured by real estate 128 6,000 175 5,645 Commercial and industrial 347 498 603 517 Commercial construction and land 25 52 26 52 Loans secured by farmland 215 1,307 271 1,308 Multi-family (5 or more) residential 0 392 0 392 Agricultural loans 0 684 0 7 Total commercial 715 8,933 1,075 7,921 Consumer 0 16 1 66 Totals $ 2,795 $ 13,587 $ 3,724 $ 13,404 The amounts shown in the table immediately above include loans classified as troubled debt restructurings (described in more detail below), if such loans are past due ninety The table below presents a summary of the contractual aging of loans as of March 31, 2018 December 31, 2017: As of March 31, 2018 As of December 31, 2017 Current & Current & (In Thousands) Past Due Past Due Past Due Past Due Past Due Past Due Less than 30-89 90+ Less than 30-89 90+ 30 Days Days Days Total 30 Days Days Days Total Residential mortgage: Residential mortgage loans - first liens $ 351,132 $ 4,475 $ 3,179 $ 358,786 $ 347,032 $ 7,967 $ 4,988 $ 359,987 Residential mortgage loans - junior liens 25,716 144 10 25,870 25,133 87 105 25,325 Home equity lines of credit 33,960 381 254 34,595 34,789 732 237 35,758 1-4 Family residential construction 25,651 139 0 25,790 25,667 549 0 26,216 Total residential mortgage 436,459 5,139 3,443 445,041 432,621 9,335 5,330 447,286 Commercial: Commercial loans secured by real estate 157,605 581 3,385 161,571 155,917 311 3,038 159,266 Commercial and industrial 88,386 549 411 89,346 87,306 303 667 88,276 Political subdivisions 56,224 0 0 56,224 59,287 0 0 59,287 Commercial construction and land 12,839 316 77 13,232 14,400 49 78 14,527 Loans secured by farmland 5,548 494 973 7,015 6,226 12 1,017 7,255 Multi-family (5 or more) residential 7,229 0 392 7,621 7,321 0 392 7,713 Agricultural loans 5,651 145 7 5,803 6,114 57 7 6,178 Other commercial loans 16,079 0 0 16,079 10,986 0 0 10,986 Total commercial 349,561 2,085 5,245 356,891 347,557 732 5,199 353,488 Consumer 15,307 94 16 15,417 14,760 123 56 14,939 Totals $ 801,327 $ 7,318 $ 8,704 $ 817,349 $ 794,938 $ 10,190 $ 10,585 $ 815,713 Nonaccrual loans are included in the contractual aging in the immediately preceding table. A summary of the contractual aging of nonaccrual loans at March 31, 2018 December 31, 2017 Current & (In Thousands) Past Due Past Due Past Due Less than 30-89 90+ 30 Days Days Days Total March 31, 2018 Nonaccrual Totals $ 6,287 $ 1,391 $ 5,909 $ 13,587 December 31, 2017 Nonaccrual Totals $ 5,802 $ 741 $ 6,861 $ 13,404 Loans whose terms are modified are classified as Troubled Debt Restructurings (TDRs) if the Corporation grants such borrowers concessions, and it is deemed that those borrowers are experiencing financial difficulty. Loans classified as TDRs are designated as impaired. The outstanding balance of loans subject to TDRs, as well as contractual aging information at March 31, 2018 December 31, 2017 Current & (In Thousands) Past Due Past Due Past Due Less than 30-89 90+ 30 Days Days Days Nonaccrual Total March 31, 2018 Totals $ 774 $ 0 $ 0 $ 2,987 $ 3,761 December 31, 2017 Totals $ 636 $ 0 $ 0 $ 3,027 $ 3,663 At March 31, 2018 December 31, 2017, no TDRs that occurred during the three March 31, 2018 2017 (Balances in Thousands) March 31, 2018 March 31, 2017 Post- Post- Number Modification Number Modification of Recorded of Recorded Loans Investment Loans Investment Residential mortgage - first liens, Reduced monthly payments for a six-month period 1 $ 80 0 $ 0 Commercial loans secured by real estate, Extended interest only payments for a six-month period 2 36 0 0 Commercial and industrial, Extended interest only payments for a six-month period 1 46 0 0 Total 4 $ 162 0 $ 0 In the three March 31, 2018 2017, 12 (Balances in Thousands) March 31, 2018 March 31, 2017 Number Number of Recorded of Recorded Loans Investment Loans Investment Residential mortgage - first liens 0 $ 0 2 $ 293 Residential mortgage - junior liens 0 0 1 28 Consumer 0 0 1 26 Total 0 $ 0 4 $ 347 The carrying amount of foreclosed residential real estate properties held as a result of obtaining physical possession (included in Foreclosed assets held for sale in the unaudited consolidated balance sheets) is as follows: (In Thousands) March 31, Dec. 31, 2018 2017 Foreclosed residential real estate $ 396 $ 721 The recorded investment of consumer mortgage loans secured by residential real properties for which formal foreclosure proceedings were in process is as follows: (In Thousands) March 31, Dec. 31, 2018 2017 Residential real estate in process of foreclosure $ 1,470 $ 1,789

Note 8 - Borrowed Funds

Note 8 - Borrowed Funds	3 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Debt Disclosure [Text Block]	8. Short-term borrowings (initial maturity within one (In Thousands) Mar ch 31, Dec. 31, 2018 2017 FHLB-Pittsburgh borrowings $ 21,000 $ 58,000 Customer repurchase agreements 5,482 3,766 Total short-term borrowings $ 26,482 $ 61,766 The FHLB-Pittsburgh loan facilities are collateralized by qualifying loans secured by real estate with a book value totaling $494,290,000 March 31, 2018 $488,889,000 December 31, 2017. $5,142,000 March 31, 2018 $6,426,000 December 31, 2017. At March 31, 2018, 7 $3,000,000 April October 2018, 1.72%. December 31, 2017, $58,000,000 $29,000,000 1.54% $29,000,000 1.69%. The Corporation engages in repurchase agreements with certain commercial customers. These agreements provide that the Corporation sells specified investment securities to the customers on an overnight basis and repurchases them on the following business day. The weighted average interest rate paid by the Corporation on customer repurchase agreements was 0.10% March 31, 2018 December 31, 2017. $11,417,000 March 31, 2018 $12,158,000 December 31, 2017. Long-term borrowings from FHLB-Pittsburgh are as follows: (In Thousands) Mar ch 31, Dec. 31, 2018 2017 Loan maturing in November 2018 with a rate of 1.63% $ 3,000 $ 3,000 Loan maturing in December 2018 with a rate of 1.35% 3,000 3,000 Loan maturing in January 2019 with a rate of 1.83% 2,000 2,000 Loan maturing in February 2019 with a rate of 1.95% 3,000 0 Loan maturing in March 2019 with a rate of 2.15% 3,000 0 Loan maturing in April 2019 with a rate of 2.24% 3,000 0 Loan maturing in April 2020 with a rate of 4.79% 416 463 Loan maturing in June 2025 with a rate of 4.91% 706 726 Total long-term FHLB-Pittsburgh borrowings $ 18,122 $ 9,189

Note 9 - Defined Benefit Plans

Note 9 - Defined Benefit Plans	3 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Pension and Other Postretirement Benefits Disclosure [Text Block]	9 . DEFINED BENEFIT PLANS The Corporation sponsors a defined benefit health care plan that provides postretirement medical benefits and life insurance to employees who meet certain age and length of service requirements. Full-time employees no not March 31, 2018 December 31, 2017, not December 31 In an acquisition in 2007, December 31, 2002, December 31 The components of net periodic benefit costs from these defined benefit plans are as follows: Defined Benefit Plans (In Thousands) Pension Postretirement Three Months Ended Three Months Ended March 31, March 31, 2018 2017 2018 2017 Service cost $ 0 $ 0 $ 10 $ 9 Interest cost 6 6 13 14 Expected return on plan assets (5 ) (8 ) 0 0 Amortization of prior service cost 0 0 (8 ) (8 ) Recognized net actuarial loss 3 2 0 0 Net periodic benefit cost $ 4 $ 0 $ 15 $ 15 Service cost, interest cost and expected return on plan assets are included in pensions and other employee benefits expense in the consolidated statements of income in the first 2018 2017. first 2018 2017. In the first three 2018, $12,000, $60,000 2018 No 2018, may

Note 10 - Stock-based Compensat

Note 10 - Stock-based Compensation Plans	3 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	10 . STOCK-BASED COMPENSATION PLANS The Corporation has a Stock Incentive Plan for a selected group of officers and an Independent Directors Stock Incentive Plan. In the first 2018, 25,466 9,086 2018 three one 16,578 2018 one Compensation cost related to restricted stock is recognized based on the fair value of the stock at the grant date over the vesting period, adjusted for estimated and actual forfeitures. Management has estimated restricted stock expense in the first three 2018 2016, 2017 2018 not Total annual stock-based compensation for the year ending December 31, 2018 $714,000. 2016, 2017 2018 $190,000. $183,000 first 2018 $168,000 first 2017.

Note 11 - Income Taxes

Note 11 - Income Taxes	3 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Income Tax Disclosure [Text Block]	11 . INCOME TAXES The net deferred tax asset at March 31, 2018 December 31, 2017 March 31, December 31, (In Thousands) 2018 2017 Deferred tax assets: Unrealized holding losses on securities: Included in accumulated other comprehensive loss $ 1,508 $ 843 Included in retained earnings 0 (337 ) Allowance for loan losses 1,935 1,894 Other deferred tax assets 1,544 1,726 Total deferred tax assets 4,987 4,126 Deferred tax liabilities: Defined benefit plans - ASC 835: Included in accumulated other comprehensive loss 37 31 Included in retained earnings 0 (12 ) Bank premises and equipment 765 751 Core deposit intangibles 2 3 Other deferred tax liabilities 63 64 Total deferred tax liabilities 867 837 Deferred tax asset, net $ 4,120 $ 3,289 In December 2017, 21%, January 1, 2018, 35% December 31, 2017, 1, 2018 02, two January 1, 2018, $325,000 March 31, 2018. The provision for income tax for the three March 31, 2018 2017 Three Months Ended (Dollars In thousands) March 31, 2018 2017 Income before income tax provision $ 5,116 $ 4,418 Income tax provision 741 984 Effective tax rate 14.48 % 22.27 % The effective tax rate for each period presented differs from the statutory rate of 21% March 31, 2018 35% March 31, 2017 The Corporation has investments in three two three 2013, 2013 2017 2022. $581,000 March 31, 2018 $608,000 December 31, 2017 ( December 31, 2018, $150,000 $54,000. $14,000 first 2018 $18,000 first 2017. The Corporation has no no 2014.

Note 12 - Contingencies

Note 12 - Contingencies	3 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	12 . CONTINGENCIES In the normal course of business, the Corporation may not

Note 13 - Revenue Recognition

Note 13 - Revenue Recognition	3 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	13. As disclosed in Note 1, January 1, 2018, 2014 09, 606 606. no 606 Additional disclosures related to the Corporation’s largest sources of noninterest income within the consolidated statements of income that are subject to ASC 606 Trust and financial management revenue 401 not not $916,295,000 March 31, 2018 $916,580,000 December 31, 2017. Trust revenue is recorded on a cash basis, which is not 81%, 2017 None Service charges on deposit accounts one not Interchange revenue from debit card transactions one

Significant Accounting Policies

Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	RECENT ACCOUNTING PRONOUNCEMENTS The Financial Accounting Standards Board (FASB) issues Accounting Standards Updates (ASUs) to the FASB Accounting Standards Codification (ASC). This section provides a summary description of recent ASUs that have significant implications (elected or required) within the consolidated financial statements, or that management expects may Recent Accounting Pronouncements - Adopted In the first 2018, 2014 09, 606 five not 2014 09 not 13. In February 2018, 2018 02, not 2017 January 1, 2018. two January 1, 2018, $325,000 no In the first 2018, 2017 08, 310 20 no $26,000 January 1, 2018 In the first 2018, 2016 01, 2016 01 January 1, 2018 1 2 3 no $22,000 January 1, 2018 6. not 5. Recent ly Issued But Not Accounting Pronouncements ASU 2016 02, 842 842 not 12 not 842 first 2019. 2016 02 not not ASU 2016 13, 326 2016 13 2016 13 2016 13 2016 13 first 2020. first 2019; not 326 ASU 2017 04, 350 2 not may first 2020. not

Note 2 - Per Share Data (Tables

Note 2 - Per Share Data (Tables)	3 Months Ended
	Mar. 31, 2018
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	3 Months Ended March 31, March 31, 2018 2017 Basic Net income $ 4,375,000 $ 3,434,000 Less: Dividends and undistributed earnings allocated to participating securities (23,000 ) (18,000 ) Net income attributable to common shares $ 4,352,000 $ 3,416,000 Basic weighted-average common shares outstanding 12,189,471 12,085,729 Basic earnings per common share (a) $ 0.36 $ 0.28 Diluted Net income attributable to common shares $ 4,352,000 $ 3,416,000 Basic weighted-average common shares outstanding 12,189,471 12,085,729 Dilutive effect of potential common stock arising from stock options 32,785 45,681 Diluted weighted-average common shares outstanding 12,222,256 12,131,410 Diluted earnings per common share (a) $ 0.36 $ 0.28

Note 3 - Comprehensive Income (

Note 3 - Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2018
Notes Tables
Comprehensive Income (Loss) [Table Text Block]	(In Thousands) Before-Tax Income Tax Net-of-Tax Amount Effect Amount Three Months Ended March 31, 2018 Other comprehensive loss on available-for-sale securities, Unrealized holding losses on available-for-sale securities $ (4,839 ) $ 1,015 $ (3,824 ) Unfunded pension and postretirement obligations: Changes from plan amendments and actuarial gains and losses included in other comprehensive income 93 (19 ) 74 Amortization of prior service cost and net actuarial loss included in net periodic benefit cost (5 ) 1 (4 ) Other comprehensive income on unfunded retirement obligations 88 (18 ) 70 Total other comprehensive loss $ (4,751 ) $ 997 $ (3,754 ) (In Thousands) Before-Tax Income Tax Net-of-Tax Amount Effect Amount Three Months Ended March 31, 2017 Unrealized gains on available-for-sale securities: Unrealized holding gains on available-for-sale securities $ 636 $ (223 ) $ 413 Reclassification adjustment for (gains) realized in income (145 ) 51 (94 ) Other comprehensive income on available-for-sale securities 491 (172 ) 319 Unfunded pension and postretirement obligations: Changes from plan amendments and actuarial gains and losses included in other comprehensive income 166 (58 ) 108 Amortization of prior service cost and net actuarial loss included in net periodic benefit cost (6 ) 2 (4 ) Other comprehensive income on unfunded retirement obligations 160 (56 ) 104 Total other comprehensive income $ 651 $ (228 ) $ 423
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	(In Thousands) Accumulated Unrealized Unfunded Other (Losses) Retirement Comprehensive on Securities Obligations Loss Three Months Ended March 31, 2018 Balance, beginning of period $ (1,566 ) $ 59 $ (1,507 ) Impact of change in enacted income tax rate (337 ) 12 (325 ) Impact of change in the method of premium amortization of callable debt securities 26 0 26 Impact of change in the method of accounting for marketable equity security 22 0 22 Other comprehensive (loss) income during three months ended March 31, 2018 (3,824 ) 70 (3,754 ) Balance, end of period $ (5,679 ) $ 141 $ (5,538 ) Three Months Ended March 31, 2017 Balance, beginning of period $ (949 ) $ 51 $ (898 ) Other comprehensive income during three months ended March 31, 2017 319 104 423 Balance, end of period $ (630 ) $ 155 $ (475 )
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]	Reclassified from Details about Accumulated Other Accumulated Other Affected Line Item in the Consolidated Comprehensive Loss Components C omprehensive Loss Statements of Income Amortization of defined benefit pension and postretirement items: Prior service cost $ (8 ) Other noninterest expense Actuarial loss 3 Other noninterest expense (5 ) Total before tax 1 Income tax provision (4 ) Net of tax Total reclassifications for the period $ (4 ) Reclassified from Details about Accumulated Other Accumulated Other Affected Line Item in the Consolidated Comprehensive Loss Components C omprehensive Loss Statements of Income Unrealized gains and losses on available-for-sale securities $ (145 ) Realized gains on securities, net 51 Income tax provision (94 ) Net of tax Amortization of defined benefit pension and postretirement items: Prior service cost (8 ) Other noninterest expense Actuarial loss 2 Other noninterest expense (6 ) Total before tax 2 Income tax provision (4 ) Net of tax Total reclassifications for the period $ (98 )

Note 4 - Cash and Due From Ba25

Note 4 - Cash and Due From Banks (Tables)	3 Months Ended
	Mar. 31, 2018
Notes Tables
Schedule of Cash and Cash Equivalents [Table Text Block]	(In thousands) Mar ch 31, Dec. 31, 2018 2017 Cash and cash equivalents $ 34,340 $ 37,004 Certificates of deposit 2,520 3,240 Total cash and due from banks $ 36,860 $ 40,244

Note 5 - Fair Value Measureme26

Note 5 - Fair Value Measurements and Fair Values of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2018
Notes Tables
Fair Value, by Balance Sheet Grouping [Table Text Block]	March 3 1, 201 8 Quoted Prices Other in Active Observable Unobservable Total Markets Inputs Inputs Fair (In Thousands) (Level 1) (Level 2) (Level 3) Value Recurring fair value measurements AVAILABLE-FOR-SALE DEBT SECURITIES: Obligations of U.S. Government agencies $ 0 $ 7,803 $ 0 $ 7,803 Obligations of states and political subdivisions: Tax-exempt 0 103,403 0 103,403 Taxable 0 24,038 0 24,038 Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: Residential pass-through securities 0 49,335 0 49,335 Residential collateralized mortgage obligations 0 124,008 0 124,008 Commercial mortgage-backed securities 0 32,546 0 32,546 Total available-for-sale debt securities 0 341,133 0 341,133 Marketable equity security 956 0 0 956 Servicing rights 0 0 1,369 1,369 Total recurring fair value measurements $ 956 $ 341,133 $ 1,369 $ 343,458 Nonrecurring fair value measurements Impaired loans with a valuation allowance $ 0 $ 0 $ 4,368 $ 4,368 Valuation allowance 0 0 (1,289 ) (1,289 ) Impaired loans, net 0 0 3,079 3,079 Foreclosed assets held for sale 0 0 1,100 1,100 Total nonrecurring fair value measurements $ 0 $ 0 $ 4,179 $ 4,179 December 31, 201 7 Quoted Prices Other in Active Observable Unobservable Total Markets Inputs Inputs Fair (In Thousands) (Level 1) (Level 2) (Level 3) Value Recurring fair value measurements AVAILABLE-FOR-SALE DEBT SECURITIES: Obligations of U.S. Government agencies $ 0 $ 7,873 $ 0 $ 7,873 Obligations of states and political subdivisions: Tax-exempt 0 105,111 0 105,111 Taxable 0 25,573 0 25,573 Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: Residential pass-through securities 0 52,347 0 52,347 Residential collateralized mortgage obligations 0 131,814 0 131,814 Commercial mortgage-backed securities 0 33,219 0 33,219 Total available-for-sale debt securities 0 355,937 0 355,937 Marketable equity security 971 0 0 971 Servicing rights 0 0 1,299 1,299 Total recurring fair value measurements $ 971 $ 355,937 $ 1,299 $ 358,207 Nonrecurring fair value measurements Impaired loans with a valuation allowance $ 0 $ 0 $ 3,776 $ 3,776 Valuation allowance 0 0 (1,183 ) (1,183 ) Impaired loans, net 0 0 2,593 2,593 Foreclosed assets held for sale 0 0 1,598 1,598 Total nonrecurring fair value measurements $ 0 $ 0 $ 4,191 $ 4,191
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	(In Thousands) Three Months Ended Mar ch 31, 2018 Mar ch 31, 2017 Servicing rights balance, beginning of period $ 1,299 $ 1,262 Issuances of servicing rights 50 46 Unrealized gains (losses) included in earnings 20 (30 ) Servicing rights balance, end of period $ 1,369 $ 1,278
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]	(In Thousands) Fair Value March 31, 2018 December 31, 2017 Hierarchy Carrying Fair Carrying Fair Level Amount Value Amount Value Financial assets: Cash and cash equivalents Level 1 $ 34,340 $ 34,340 $ 37,004 $ 37,004 Certificates of deposit Level 2 2,520 2,508 3,240 3,234 Restricted equity securities (included in Other Assets) Level 2 6,228 6,228 6,556 6,556 Loans held for sale Level 1 225 225 765 765 Loans, net Level 3 808,300 808,653 806,857 789,891 Accrued interest receivable Level 2 3,899 3,899 4,048 4,048 Financial liabilities: Deposits with no stated maturity Level 2 793,351 793,351 794,778 794,778 Time deposits Level 2 224,730 224,814 213,671 213,734 Short-term borrowings Level 2 26,482 26,263 61,766 61,643 Long-term borrowings Level 2 18,122 18,155 9,189 9,256 Accrued interest payable Level 2 61 61 46 46
Fair Value, Measurements, Nonrecurring [Member]
Notes Tables
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]	(In Thousands, Except Weighted- Percentages) Valuation Average) Balance at Allowance at Fair Value at Valuation Unobservable Discount at Asset 3/31/18 3/31/18 3/31/18 Technique Inputs 3/31/18 Impaired loans: Residential mortgage loans - first liens $ 515 $ 122 $ 393 Sales comparison Discount to appraised value 26 % Commercial: Commercial loans secured by real estate 2,607 884 1,723 Sales comparison Discount to appraised value 16 % Commercial and industrial 75 75 0 Sales comparison Discount to appraised value 100 % Loans secured by farmland 494 50 444 Sales comparison Discount to appraised value 53 % Agricultural Loans 677 158 519 Sales comparison Discount to appraised value 36 % Total impaired loans $ 4,368 $ 1,289 $ 3,079 Foreclosed assets held for sale - real estate: Residential (1-4 family) $ 396 $ 0 $ 396 Sales comparison Discount to appraised value 32 % Land 632 0 632 Sales comparison Discount to appraised value 35 % Commercial real estate 72 0 72 Sales comparison Discount to appraised value 76 % Total foreclosed assets held for sale $ 1,100 $ 0 $ 1,100 (In Thousands, Except Weighted- Percentages) Valuation Average Balance at Allowance at Fair Value at Valuation Unobservable Discount at Asset 12/31/17 12/31/17 12/31/17 Technique Inputs 12/31/17 Impaired loans: Residential mortgage loans - first liens $ 515 $ 122 $ 393 Sales comparison Discount to appraised value 26 % Commercial: Commercial loans secured by real estate 2,641 919 1,722 Sales comparison Discount to appraised value 16 % Commercial and industrial 126 92 34 Sales comparison Discount to appraised value 72 % Loans secured by farmland 494 50 444 Sales comparison Discount to appraised value 53 % Total impaired loans $ 3,776 $ 1,183 $ 2,593 Foreclosed assets held for sale - real estate: Residential (1-4 family) $ 721 $ 0 $ 721 Sales comparison Discount to appraised value 37 % Land 632 0 632 Sales comparison Discount to appraised value 35 % Commercial real estate 245 0 245 Sales comparison Discount to appraised value 71 % Total foreclosed assets held for sale $ 1,598 $ 0 $ 1,598
Fair Value, Measurements, Recurring [Member]
Notes Tables
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]	Fair Value at 3 /3 1 /1 8 Valuation Unobservable Method or Value As of Asset (In Thousands) Technique Input(s) 3 /3 1/18 Servicing rights $ 1,369 Discounted cash flow Discount rate 13.00 % Rate used through modeling period Loan prepayment speeds 118.00 % Weighted-average PSA Servicing fees 0.25 % of loan balances 4.00 % of payments are late 5.00 % late fees assessed $ 1.94 Miscellaneous fees per account per month Servicing costs $ 6.00 Monthly servicing cost per account $ 24.00 Additional monthly servicing cost per loan on loans more than 30 days delinquent 1.50 % of loans more than 30 days delinquent 3.00 % annual increase in servicing costs Fair Value at 12/31/1 7 Valuation Unobservable Method or Value As of Asset (In Thousands) Technique Input(s) 12/31/1 7 Servicing rights $ 1,299 Discounted cash flow Discount rate 13.00 % Rate used through modeling period Loan prepayment speeds 140.00 % Weighted-average PSA Servicing fees 0.25 % of loan balances 4.00 % of payments are late 5.00 % late fees assessed $ 1.94 Miscellaneous fees per account per month Servicing costs $ 6.00 Monthly servicing cost per account $ 24.00 Additional monthly servicing cost per loan on loans more than 30 days delinquent 1.50 % of loans more than 30 days delinquent 3.00 % annual increase in servicing costs

Note 6 - Securities (Tables)

Note 6 - Securities (Tables)	3 Months Ended
	Mar. 31, 2018
Notes Tables
Available-for-sale Securities [Table Text Block]	March 31, 2018 Gross Gross Unrealized Unrealized Amortized Holding Holding Fair (In Thousands) Cost Gains Losses Value Obligations of U.S. Government agencies $ 8,023 $ 0 $ (220 ) $ 7,803 Obligations of states and political subdivisions: Tax-exempt 103,598 1,651 (1,846 ) 103,403 Taxable 24,140 98 (200 ) 24,038 Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: Residential pass-through securities 50,880 66 (1,611 ) 49,335 Residential collateralized mortgage obligations 127,886 44 (3,922 ) 124,008 Commercial mortgage-backed securities 33,793 0 (1,247 ) 32,546 Total available-for-sale-debt securities $ 348,320 $ 1,859 $ (9,046 ) $ 341,133 December 31, 2017 Gross Gross Unrealized Unrealized Amortized Holding Holding Fair (In Thousands) Cost Gains Losses Value Obligations of U.S. Government agencies $ 8,026 $ 0 $ (153 ) $ 7,873 Obligations of states and political subdivisions: Tax-exempt 103,673 2,291 (853 ) 105,111 Taxable 25,431 226 (84 ) 25,573 Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: Residential pass-through securities 52,992 79 (724 ) 52,347 Residential collateralized mortgage obligations 134,314 110 (2,610 ) 131,814 Commercial mortgage-backed securities 33,881 4 (666 ) 33,219 Total available-for-sale debt securities $ 358,317 $ 2,710 $ (5,090 ) $ 355,937
Schedule of Unrealized Loss on Investments [Table Text Block]	March 3 1, 2018 Less Than 12 Months 12 Months or More Total (In Thousands) Fair Unrealized Fair Unrealized Fair Unrealized Value Losses Value Losses Value Losses Obligations of U.S. Government agencies $ 0 $ 0 $ 7,803 $ (220 ) $ 7,803 $ (220 ) Obligations of states and political subdivisions: Tax-exempt 30,641 (439 ) 23,636 (1,407 ) 54,277 (1,846 ) Taxable 14,526 (143 ) 2,245 (57 ) 16,771 (200 ) Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: Residential pass-through securities 27,259 (718 ) 21,227 (893 ) 48,486 (1,611 ) Residential collateralized mortgage obligations 55,506 (1,210 ) 64,378 (2,712 ) 119,884 (3,922 ) Commercial mortgage-backed securities 18,267 (539 ) 14,279 (708 ) 32,546 (1,247 ) Total temporarily impaired available-for-sale debt securities $ 146,199 $ (3,049 ) $ 133,568 $ (5,997 ) $ 279,767 $ (9,046 ) December 31, 2017 Less Than 12 Months 12 Months or More Total (In Thousands) Fair Unrealized Fair Unrealized Fair Unrealized Value Losses Value Losses Value Losses Obligations of U.S. Government agencies $ 0 $ 0 $ 7,873 $ (153 ) $ 7,873 $ (153 ) Obligations of states and political subdivisions: Tax-exempt 19,050 (135 ) 24,391 (718 ) 43,441 (853 ) Taxable 9,279 (45 ) 2,116 (39 ) 11,395 (84 ) Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: Residential pass-through securities 25,255 (242 ) 22,549 (482 ) 47,804 (724 ) Residential collateralized mortgage obligations 50,812 (589 ) 68,558 (2,021 ) 119,370 (2,610 ) Commercial mortgage-backed securities 14,713 (173 ) 14,569 (493 ) 29,282 (666 ) Total temporarily impaired available-for-sale debt securities $ 119,109 $ (1,184 ) $ 140,056 $ (3,906 ) $ 259,165 $ (5,090 )
Realized Gain (Loss) on Investments [Table Text Block]	(In Thousands) 3 Months Ended Mar ch 31, Mar ch 31, 2018 2017 Gross realized gains from sales $ 0 $ 161 Gross realized losses from sales 0 (16 ) Net realized gains $ 0 $ 145
Investments Classified by Contractual Maturity Date [Table Text Block]	Amortized Fair (In Thousands) Cost Value Due in one year or less $ 18,713 $ 18,844 Due from one year through five years 63,703 63,793 Due from five years through ten years 33,100 32,226 Due after ten years 20,245 20,381 Sub-total 135,761 135,244 Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: Residential pass-through securities 50,880 49,335 Residential collateralized mortgage obligations 127,886 124,008 Commercial mortgage-backed securities 33,793 32,546 Total $ 348,320 $ 341,133

Note 7 - Loans (Tables)

Note 7 - Loans (Tables)	3 Months Ended
	Mar. 31, 2018
Notes Tables
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	Summary of Loans by Type (In Thousands) March 31, Dec. 31, 2018 2017 Residential mortgage: Residential mortgage loans - first liens $ 358,786 $ 359,987 Residential mortgage loans - junior liens 25,870 25,325 Home equity lines of credit 34,595 35,758 1-4 Family residential construction 25,790 26,216 Total residential mortgage 445,041 447,286 Commercial: Commercial loans secured by real estate 161,571 159,266 Commercial and industrial 89,346 88,276 Political subdivisions 56,224 59,287 Commercial construction and land 13,232 14,527 Loans secured by farmland 7,015 7,255 Multi-family (5 or more) residential 7,621 7,713 Agricultural loans 5,803 6,178 Other commercial loans 16,079 10,986 Total commercial 356,891 353,488 Consumer 15,417 14,939 Total 817,349 815,713 Less: allowance for loan losses (9,049 ) (8,856 ) Loans, net $ 808,300 $ 806,857
Allowance for Credit Losses on Financing Receivables [Table Text Block]	Three Months Ended March 31, 2018 Dec. 31, March 31, (In Thousands) 2017 Balance Charge-offs Recoveries Provision (Credit) 2018 Balance Allowance for Loan Losses: Residential mortgage: Residential mortgage loans - first liens $ 3,200 $ (53 ) $ 1 $ (81 ) $ 3,067 Residential mortgage loans - junior liens 224 0 1 126 351 Home equity lines of credit 296 0 0 (10 ) 286 1-4 Family residential construction 243 0 0 (4 ) 239 Total residential mortgage 3,963 (53 ) 2 31 3,943 Commercial: Commercial loans secured by real estate 2,584 (21 ) 0 72 2,635 Commercial and industrial 1,065 0 2 (31 ) 1,036 Commercial construction and land 150 0 0 (13 ) 137 Loans secured by farmland 105 0 0 (3 ) 102 Multi-family (5 or more) residential 172 0 0 (3 ) 169 Agricultural loans 57 0 0 148 205 Other commercial loans 102 0 0 47 149 Total commercial 4,235 (21 ) 2 217 4,433 Consumer 159 (41 ) 12 44 174 Unallocated 499 0 0 0 499 Total Allowance for Loan Losses $ 8,856 $ (115 ) $ 16 $ 292 $ 9,049 Three Months Ended March 31, 2017 Dec. 31, March 31, (In Thousands) 2016 Balance Charge-offs Recoveries Provision (Credit) 2017 B alance Allowance for Loan Losses: Residential mortgage: Residential mortgage loans - first liens $ 3,033 $ (63 ) $ 2 $ 153 $ 3,125 Residential mortgage loans - junior liens 258 0 1 (3 ) 256 Home equity lines of credit 350 0 0 (12 ) 338 1-4 Family residential construction 249 0 0 (9 ) 240 Total residential mortgage 3,890 (63 ) 3 129 3,959 Commercial: Commercial loans secured by real estate 2,380 (96 ) 0 401 2,685 Commercial and industrial 999 0 1 (94 ) 906 Commercial construction and land 162 0 0 7 169 Loans secured by farmland 110 0 0 1 111 Multi-family (5 or more) residential 241 0 0 (5 ) 236 Agricultural loans 40 0 0 (1 ) 39 Other commercial loans 115 0 0 (6 ) 109 Total commercial 4,047 (96 ) 1 303 4,255 Consumer 138 (41 ) 15 20 132 Unallocated 398 0 0 0 398 Total Allowance for Loan Losses $ 8,473 $ (200 ) $ 19 $ 452 $ 8,744
Financing Receivable Credit Quality Indicators [Table Text Block]	March 31, 2018 (In Thousands) Special Pass Mention Substandard Doubtful Total Residential Mortgage: Residential mortgage loans - first liens $ 349,713 $ 313 $ 8,708 $ 52 $ 358,786 Residential mortgage loans - junior liens 25,328 100 442 0 25,870 Home equity lines of credit 34,045 99 451 0 34,595 1-4 Family residential construction 25,790 0 0 0 25,790 Total residential mortgage 434,876 512 9,601 52 445,041 Commercial: Commercial loans secured by real estate 152,743 924 7,904 0 161,571 Commercial and Industrial 82,445 5,412 1,478 11 89,346 Political subdivisions 56,224 0 0 0 56,224 Commercial construction and land 13,155 0 77 0 13,232 Loans secured by farmland 5,001 626 1,376 12 7,015 Multi-family (5 or more) residential 7,047 0 574 0 7,621 Agricultural loans 4,851 268 684 0 5,803 Other commercial loans 16,007 0 72 0 16,079 Total commercial 337,473 7,230 12,165 23 356,891 Consumer 15,383 0 34 0 15,417 Totals $ 787,732 $ 7,742 $ 21,800 $ 75 $ 817,349 December 31, 2017 (In Thousands) Special Pass Mention Substandard Doubtful Total Residential Mortgage: Residential mortgage loans - first liens $ 350,609 $ 307 $ 9,019 $ 52 $ 359,987 Residential mortgage loans - junior liens 24,795 104 426 0 25,325 Home equity lines of credit 35,233 61 464 0 35,758 1-4 Family residential construction 26,216 0 0 0 26,216 Total residential mortgage 436,853 472 9,909 52 447,286 Commercial: Commercial loans secured by real estate 150,806 936 7,524 0 159,266 Commercial and Industrial 82,724 3,896 1,645 11 88,276 Political subdivisions 59,287 0 0 0 59,287 Commercial construction and land 14,449 0 78 0 14,527 Loans secured by farmland 5,283 581 1,379 12 7,255 Multi-family (5 or more) residential 7,130 0 583 0 7,713 Agricultural loans 5,203 270 705 0 6,178 Other commercial loans 10,913 0 73 0 10,986 Total commercial 335,795 5,683 11,987 23 353,488 Consumer 14,853 0 86 0 14,939 Totals $ 787,501 $ 6,155 $ 21,982 $ 75 $ 815,713
Impaired Financing Receivable by Portfolio Segment [Table Text Block]	March 31, 2018 Loans: Allowance for Loan Losses: (In Thousands) Individually Collectively Individually Collectively Evaluated Evaluated Totals Evaluated Evaluated Totals Residential mortgage: Residential mortgage loans - first liens $ 969 $ 357,817 $ 358,786 $ 0 $ 3,067 $ 3,067 Residential mortgage loans - junior liens 300 25,570 25,870 122 229 351 Home equity lines of credit 0 34,595 34,595 0 286 286 1-4 Family residential construction 0 25,790 25,790 0 239 239 Total residential mortgage 1,269 443,772 445,041 122 3,821 3,943 Commercial: Commercial loans secured by real estate 5,982 155,589 161,571 884 1,751 2,635 Commercial and industrial 498 88,848 89,346 157 879 1,036 Political subdivisions 0 56,224 56,224 0 0 0 Commercial construction and land 0 13,232 13,232 0 137 137 Loans secured by farmland 1,362 5,653 7,015 50 52 102 Multi-family (5 or more) residential 392 7,229 7,621 0 169 169 Agricultural loans 684 5,119 5,803 158 47 205 Other commercial loans 0 16,079 16,079 0 149 149 Total commercial 8,918 347,973 356,891 1,249 3,184 4,433 Consumer 19 15,398 15,417 0 174 174 Unallocated 499 Total $ 10,206 $ 807,143 $ 817,349 $ 1,371 $ 7,179 $ 9,049 December 31, 2017 Loans: Allowance for Loan Losses: (In Thousands) Individually Collectively Individually Collectively Evaluated Evaluated Totals Evaluated Evaluated Totals Residential mortgage: Residential mortgage loans - first liens $ 984 $ 359,003 $ 359,987 $ 0 $ 3,200 $ 3,200 Residential mortgage loans - junior liens 302 25,023 25,325 122 102 224 Home equity lines of credit 0 35,758 35,758 0 296 296 1-4 Family residential construction 0 26,216 26,216 0 243 243 Total residential mortgage 1,286 446,000 447,286 122 3,841 3,963 Commercial: Commercial loans secured by real estate 5,873 153,393 159,266 919 1,665 2,584 Commercial and industrial 568 87,708 88,276 188 877 1,065 Political subdivisions 0 59,287 59,287 0 0 0 Commercial construction and land 0 14,527 14,527 0 150 150 Loans secured by farmland 1,365 5,890 7,255 50 55 105 Multi-family (5 or more) residential 392 7,321 7,713 0 172 172 Agricultural loans 7 6,171 6,178 0 57 57 Other commercial loans 0 10,986 10,986 0 102 102 Total commercial 8,205 345,283 353,488 1,157 3,078 4,235 Consumer 20 14,919 14,939 0 159 159 Unallocated 499 Total $ 9,511 $ 806,202 $ 815,713 $ 1,279 $ 7,078 $ 8,856
Impaired Financing Receivables [Table Text Block]	(In Thousands) March 31, 2018 December 31, 2017 Unpaid Unpaid Principal Recorded Related Principal Recorded Related Balance Investment Allowance Balance Investment Allowance With no related allowance recorded: Residential mortgage loans - first liens $ 725 $ 696 $ 0 $ 740 $ 711 $ 0 Residential mortgage loans - junior liens 58 58 0 60 60 0 Commercial loans secured by real estate 3,375 3,375 0 3,230 3,230 0 Commercial and industrial 92 92 0 119 119 0 Loans secured by farmland 868 868 0 871 871 0 Multi-family (5 or more) residential 987 392 0 987 392 0 Agricultural loans 7 7 0 8 8 0 Consumer 19 19 0 20 20 0 Total with no related allowance recorded 6,131 5,507 0 6,035 5,411 0 With a related allowance recorded: Residential mortgage loans - first liens 273 273 0 273 273 0 Residential mortgage loans - junior liens 242 242 122 242 242 122 Commercial loans secured by real estate 2,607 2,607 884 2,641 2,641 919 Commercial and industrial 406 406 157 449 449 188 Loans secured by farmland 494 494 50 495 495 50 Agricultural loans 677 677 158 0 0 0 Total with a related allowance recorded 4,699 4,699 1,371 4,100 4,100 1,279 Total $ 10,830 $ 10,206 $ 1,371 $ 10,135 $ 9,511 $ 1,279
Schedule Of Additional Information On Impaired Loans [Table Text Block]	Interest Income Recognized on Average Investment in Impaired Loans Impaired Loans on a Cash Basis (In Thousands) 3 Months Ended 3 Months Ended March 31, March 31, 2018 2017 2018 2017 Residential mortgage: Residential mortgage loans - first lien $ 1,046 $ 748 $ 19 $ 9 Residential mortgage loans - junior lien 301 67 3 1 Total residential mortgage 1,347 815 22 10 Commercial: Commercial loans secured by real estate 5,882 6,889 35 56 Commercial and industrial 508 247 6 3 Loans secured by farmland 1,364 1,390 6 8 Multi-family (5 or more) residential 392 392 0 0 Agricultural loans 346 12 11 1 Total commercial 8,492 8,930 58 68 Consumer 19 33 0 0 Total $ 9,858 $ 9,778 $ 80 $ 78
Schedule of Financing Receivables, Non Accrual Status [Table Text Block]	(In Thousands) March 31, 2018 December 31, 2017 Past Due Past Due 90+ Days and 90+ Days and Accruing Nonaccrual Accruing Nonaccrual Residential mortgage: Residential mortgage loans - first liens $ 1,840 $ 4,354 $ 2,340 $ 5,131 Residential mortgage loans - junior liens 10 242 105 242 Home equity lines of credit 230 42 203 44 Total residential mortgage 2,080 4,638 2,648 5,417 Commercial: Commercial loans secured by real estate 128 6,000 175 5,645 Commercial and industrial 347 498 603 517 Commercial construction and land 25 52 26 52 Loans secured by farmland 215 1,307 271 1,308 Multi-family (5 or more) residential 0 392 0 392 Agricultural loans 0 684 0 7 Total commercial 715 8,933 1,075 7,921 Consumer 0 16 1 66 Totals $ 2,795 $ 13,587 $ 3,724 $ 13,404
Past Due Financing Receivables [Table Text Block]	As of March 31, 2018 As of December 31, 2017 Current & Current & (In Thousands) Past Due Past Due Past Due Past Due Past Due Past Due Less than 30-89 90+ Less than 30-89 90+ 30 Days Days Days Total 30 Days Days Days Total Residential mortgage: Residential mortgage loans - first liens $ 351,132 $ 4,475 $ 3,179 $ 358,786 $ 347,032 $ 7,967 $ 4,988 $ 359,987 Residential mortgage loans - junior liens 25,716 144 10 25,870 25,133 87 105 25,325 Home equity lines of credit 33,960 381 254 34,595 34,789 732 237 35,758 1-4 Family residential construction 25,651 139 0 25,790 25,667 549 0 26,216 Total residential mortgage 436,459 5,139 3,443 445,041 432,621 9,335 5,330 447,286 Commercial: Commercial loans secured by real estate 157,605 581 3,385 161,571 155,917 311 3,038 159,266 Commercial and industrial 88,386 549 411 89,346 87,306 303 667 88,276 Political subdivisions 56,224 0 0 56,224 59,287 0 0 59,287 Commercial construction and land 12,839 316 77 13,232 14,400 49 78 14,527 Loans secured by farmland 5,548 494 973 7,015 6,226 12 1,017 7,255 Multi-family (5 or more) residential 7,229 0 392 7,621 7,321 0 392 7,713 Agricultural loans 5,651 145 7 5,803 6,114 57 7 6,178 Other commercial loans 16,079 0 0 16,079 10,986 0 0 10,986 Total commercial 349,561 2,085 5,245 356,891 347,557 732 5,199 353,488 Consumer 15,307 94 16 15,417 14,760 123 56 14,939 Totals $ 801,327 $ 7,318 $ 8,704 $ 817,349 $ 794,938 $ 10,190 $ 10,585 $ 815,713
Contractual Aging of Nonaccrual Loans [Table Text Block]	Current & (In Thousands) Past Due Past Due Past Due Less than 30-89 90+ 30 Days Days Days Total March 31, 2018 Nonaccrual Totals $ 6,287 $ 1,391 $ 5,909 $ 13,587 December 31, 2017 Nonaccrual Totals $ 5,802 $ 741 $ 6,861 $ 13,404
Troubled Debt Restructurings on Financing Receivables [Table Text Block]	Current & (In Thousands) Past Due Past Due Past Due Less than 30-89 90+ 30 Days Days Days Nonaccrual Total March 31, 2018 Totals $ 774 $ 0 $ 0 $ 2,987 $ 3,761 December 31, 2017 Totals $ 636 $ 0 $ 0 $ 3,027 $ 3,663
Schedule of Troubled Debt Restructurings With Subsequent Default [Table Text Block]	(Balances in Thousands) March 31, 2018 March 31, 2017 Number Number of Recorded of Recorded Loans Investment Loans Investment Residential mortgage - first liens 0 $ 0 2 $ 293 Residential mortgage - junior liens 0 0 1 28 Consumer 0 0 1 26 Total 0 $ 0 4 $ 347
Schedule of Real Estate Acquired Through Foreclosure [Table Text Block]	(In Thousands) March 31, Dec. 31, 2018 2017 Foreclosed residential real estate $ 396 $ 721
Schedule of Mortgage Loans in Process of Foreclosure [Table Text Block]	(In Thousands) March 31, Dec. 31, 2018 2017 Residential real estate in process of foreclosure $ 1,470 $ 1,789
Troubled Debt Restructuring [Member]
Notes Tables
Troubled Debt Restructurings on Financing Receivables [Table Text Block]	(Balances in Thousands) March 31, 2018 March 31, 2017 Post- Post- Number Modification Number Modification of Recorded of Recorded Loans Investment Loans Investment Residential mortgage - first liens, Reduced monthly payments for a six-month period 1 $ 80 0 $ 0 Commercial loans secured by real estate, Extended interest only payments for a six-month period 2 36 0 0 Commercial and industrial, Extended interest only payments for a six-month period 1 46 0 0 Total 4 $ 162 0 $ 0

Note 8 - Borrowed Funds (Tables

Note 8 - Borrowed Funds (Tables)	3 Months Ended
	Mar. 31, 2018
Notes Tables
Schedule of Short-term Debt [Table Text Block]	(In Thousands) Mar ch 31, Dec. 31, 2018 2017 FHLB-Pittsburgh borrowings $ 21,000 $ 58,000 Customer repurchase agreements 5,482 3,766 Total short-term borrowings $ 26,482 $ 61,766
Schedule of Maturities of Long-term Debt [Table Text Block]	(In Thousands) Mar ch 31, Dec. 31, 2018 2017 Loan maturing in November 2018 with a rate of 1.63% $ 3,000 $ 3,000 Loan maturing in December 2018 with a rate of 1.35% 3,000 3,000 Loan maturing in January 2019 with a rate of 1.83% 2,000 2,000 Loan maturing in February 2019 with a rate of 1.95% 3,000 0 Loan maturing in March 2019 with a rate of 2.15% 3,000 0 Loan maturing in April 2019 with a rate of 2.24% 3,000 0 Loan maturing in April 2020 with a rate of 4.79% 416 463 Loan maturing in June 2025 with a rate of 4.91% 706 726 Total long-term FHLB-Pittsburgh borrowings $ 18,122 $ 9,189

Note 9 - Defined Benefit Plans

Note 9 - Defined Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 2018
Notes Tables
Schedule of Defined Benefit Plans Disclosures [Table Text Block]	Defined Benefit Plans (In Thousands) Pension Postretirement Three Months Ended Three Months Ended March 31, March 31, 2018 2017 2018 2017 Service cost $ 0 $ 0 $ 10 $ 9 Interest cost 6 6 13 14 Expected return on plan assets (5 ) (8 ) 0 0 Amortization of prior service cost 0 0 (8 ) (8 ) Recognized net actuarial loss 3 2 0 0 Net periodic benefit cost $ 4 $ 0 $ 15 $ 15

Note 11 - Income Taxes (Tables)

Note 11 - Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2018
Notes Tables
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	March 31, December 31, (In Thousands) 2018 2017 Deferred tax assets: Unrealized holding losses on securities: Included in accumulated other comprehensive loss $ 1,508 $ 843 Included in retained earnings 0 (337 ) Allowance for loan losses 1,935 1,894 Other deferred tax assets 1,544 1,726 Total deferred tax assets 4,987 4,126 Deferred tax liabilities: Defined benefit plans - ASC 835: Included in accumulated other comprehensive loss 37 31 Included in retained earnings 0 (12 ) Bank premises and equipment 765 751 Core deposit intangibles 2 3 Other deferred tax liabilities 63 64 Total deferred tax liabilities 867 837 Deferred tax asset, net $ 4,120 $ 3,289
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Three Months Ended (Dollars In thousands) March 31, 2018 2017 Income before income tax provision $ 5,116 $ 4,418 Income tax provision 741 984 Effective tax rate 14.48 % 22.27 %

Note 1 - Basis of Interim Pre32

Note 1 - Basis of Interim Presentation and Status of Recent Accounting Pronouncements (Details Textual) - USD ($)		Jan. 01, 2018	Dec. 31, 2017
Accounting Standards Update 2018-02 Member
Cumulative Effect of New Accounting Principle in Period of Adoption	[1]		$ 0
Accounting Standards Update 2018-02 Member | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption		$ 325,000	325,000	[1]
Accounting Standards Update 2018-02 Member | AOCI Attributable to Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption		(325,000)	(325,000)	[1]
Accounting Standards Update 2017-08 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	[2]		0
Accounting Standards Update 2017-08 [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption		(26,000)	(26,000)	[2]
Accounting Standards Update 2017-08 [Member] | AOCI Attributable to Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption		26,000	26,000	[2]
Accounting Standards Update 2016-01 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	[3]		0
Accounting Standards Update 2016-01 [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption		(22,000)	(22,000)	[3]
Accounting Standards Update 2016-01 [Member] | AOCI Attributable to Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption		$ 22,000	$ 22,000	[3]
[1]	As described in more detail in the Recent Accounting Pronouncements - Adopted section of Note 1, this reclassification resulted from adoption of Accounting Standards Update (ASU) 2018-02, Reclassification of Certain tax Effects from Accumulated Other Comprehensive Income, effective January 1, 2018.
[2]	As described in more detail in the Recent Accounting Pronouncements - Adopted section of Note 1, this reclassification resulted from adoption of ASU 2017-08, Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20), effective January 1, 2018.
[3]	As described in more detail in the Recent Accounting Pronouncements - Adopted section of Note 1, this reclassification resulted from adoption of ASU 2016-01, Recognition and Measurement of Financial Assets and Liabilities, effective January 1, 2018.

Note 2 - Per Share Data (Detail

Note 2 - Per Share Data (Details Textual) - shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Weighted Average Number of Shares, Restricted Stock	65,204	65,208
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	0

Note 2 - Per Share Data - Net I

Note 2 - Per Share Data - Net Income Per Share (Details) - USD ($)		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Net income		$ 4,375,000	$ 3,434,000
Less: Dividends and undistributed earnings allocated to participating securities		(23,000)	(18,000)
Net income attributable to common shares		$ 4,352,000	$ 3,416,000
Basic weighted-average common shares outstanding (in shares)		12,189,471	12,085,729
Basic earnings per common share (a) (in dollars per share)	[1]	$ 0.36	$ 0.28
Net income attributable to common shares		$ 4,352,000	$ 3,416,000
Dilutive effect of potential common stock arising from stock options (in shares)		32,785	45,681
Diluted weighted-average common shares outstanding (in shares)		12,222,256	12,131,410
Diluted earnings per common share (a) (in dollars per share)	[1]	$ 0.36	$ 0.28
[1]	Basic and diluted earnings per share under the two-class method are determined on net income reported on the consolidated statements of income, less earnings allocated to nonvested restricted shares with nonforfeitable dividends (participating securities).

Note 3 - Comprehensive Income -

Note 3 - Comprehensive Income - Components of Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Unrealized holding gains (losses) on available-for-sale securities, before tax amount	$ (4,839)	$ 636
Unrealized holding gains (losses) on available-for-sale securities, income tax effect	1,015	(223)
Unrealized holding (income) losses on available-for-sale securities, net of tax amount	(3,824)	413
Changes from plan amendments and actuarial gains and losses included in other comprehensive income, before tax amount	93	166
Changes from plan amendments and actuarial gains and losses included in other comprehensive income, income tax effect	(19)	(58)
Changes from plan amendments and actuarial gains and losses included in other comprehensive income, net of tax amount	74	108
Amortization of net transition obligation, prior service cost and net actuarial gain included in net periodic benefit cost, before tax amount	(5)	(6)
Amortization of net transition obligation, prior service cost and net actuarial gain included in net periodic benefit cost, income tax effect	1	2
Amortization of net transition obligation, prior service cost and net actuarial gain included in net periodic benefit cost, net of tax amount	(4)	(4)
Other comprehensive (income) loss on unfunded retirement obligations, before tax amount	88	160
Other comprehensive income (loss) on unfunded retirement obligations, income tax effect	(18)	(56)
Other comprehensive income (loss) on unfunded retirement obligations, net of tax amount	70	104
Total other comprehensive income, before tax amount	(4,751)	651
Total other comprehensive income (loss), income tax effect	997	(228)
Net other comprehensive (loss) income	(3,754)	423
Reclassification adjustment for (gains) realized in income, before tax amount		(145)
Reclassification adjustment for (gains) realized in income, income tax effect		51
Reclassification adjustment for (gains) realized in income, net of tax amount		(94)
Other comprehensive income on available-for-sale securities, before tax amount	$ (4,839)	491
Other comprehensive income on available-for-sale securities, income tax effect		(172)
Other comprehensive income on available-for-sale securities, net of tax amount		$ 319

Note 3 - Comprehensive Income36

Note 3 - Comprehensive Income - Changes in the Components of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Balance		$ 188,443	$ 186,008
Other comprehensive income (loss), net		(3,754)	423
Balance		186,382	187,350
Accounting Standards Update 2018-02 Member
Impact of change in enacted income tax rate (a)	[1]	0
Accounting Standards Update 2017-08 [Member]
Impact of change in enacted income tax rate (a)	[2]	0
Accounting Standards Update 2016-01 [Member]
Impact of change in enacted income tax rate (a)	[3]	0
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Balance		(1,566)	(949)
Other comprehensive income (loss), net		(3,824)	319
Balance		(5,679)	(630)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] | Accounting Standards Update 2018-02 Member
Impact of change in enacted income tax rate (a)		(337)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] | Accounting Standards Update 2017-08 [Member]
Impact of change in enacted income tax rate (a)		26
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] | Accounting Standards Update 2016-01 [Member]
Impact of change in enacted income tax rate (a)		22
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance		59	51
Other comprehensive income (loss), net		70	104
Balance		141	155
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Accounting Standards Update 2018-02 Member
Impact of change in enacted income tax rate (a)		12
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Accounting Standards Update 2017-08 [Member]
Impact of change in enacted income tax rate (a)		0
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Accounting Standards Update 2016-01 [Member]
Impact of change in enacted income tax rate (a)		0
AOCI Attributable to Parent [Member]
Balance		(1,507)	(898)
Other comprehensive income (loss), net		(3,754)	423
Balance		(5,538)	$ (475)
AOCI Attributable to Parent [Member] | Accounting Standards Update 2018-02 Member
Impact of change in enacted income tax rate (a)	[1]	(325)
AOCI Attributable to Parent [Member] | Accounting Standards Update 2017-08 [Member]
Impact of change in enacted income tax rate (a)	[2]	26
AOCI Attributable to Parent [Member] | Accounting Standards Update 2016-01 [Member]
Impact of change in enacted income tax rate (a)	[3]	$ 22
[1]	As described in more detail in the Recent Accounting Pronouncements - Adopted section of Note 1, this reclassification resulted from adoption of Accounting Standards Update (ASU) 2018-02, Reclassification of Certain tax Effects from Accumulated Other Comprehensive Income, effective January 1, 2018.
[2]	As described in more detail in the Recent Accounting Pronouncements - Adopted section of Note 1, this reclassification resulted from adoption of ASU 2017-08, Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20), effective January 1, 2018.
[3]	As described in more detail in the Recent Accounting Pronouncements - Adopted section of Note 1, this reclassification resulted from adoption of ASU 2016-01, Recognition and Measurement of Financial Assets and Liabilities, effective January 1, 2018.

Note 3 - Comprehensive Income37

Note 3 - Comprehensive Income - Amounts Reclassified Out of Each Component of OCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income tax provision	$ 741	$ 984
Net income	(4,375)	(3,434)
Total before tax	(5,116)	(4,418)
Unrealized gains and losses on available-for-sale securities	0	(145)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Net income	(4)	(98)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Income tax provision	(5)	51
Net income	1	(94)
Unrealized gains and losses on available-for-sale securities		(145)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Prior service cost	(8)	(8)
Actuarial loss	3	2
Income tax provision		2
Net income		(4)
Total before tax	$ (4)	$ (6)

Note 4 - Cash and Due From Ba38

Note 4 - Cash and Due From Banks (Details Textual) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Restricted Cash and Cash Equivalents, Current, Total	$ 16,376,000	$ 17,178,000

Note 4 - Cash and Due From Ba39

Note 4 - Cash and Due From Banks - Summary of Cash and Due From Banks (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Cash and cash equivalents	$ 34,340	$ 37,004
Certificates of deposit	2,520	3,240
Total cash and due from banks	$ 36,860	$ 40,244

Note 5 - Fair Value Measureme40

Note 5 - Fair Value Measurements and Fair Values of Financial Instruments - Assets Measured at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Available-for-sale securities	$ 341,133	$ 355,937
Marketable equity security	956	971
Unpaid principal - with allowance	4,699	4,100
Valuation allowance	(1,371)	(1,279)
Impaired loans, net	4,699	4,100
Marketable equity security	956	971
Nonrecurring fair value measurements
Unpaid principal - with allowance	4,699	4,100
Valuation allowance	(1,371)	(1,279)
Impaired loans, net	4,699	4,100
US Government Agencies Debt Securities [Member]
Available-for-sale securities	7,803	7,873
Obligations of States and Political Subdivisions Tax Exempt [Member]
Available-for-sale securities	103,403	105,111
Obligations of States and Political Subdivisions Taxable [Member]
Available-for-sale securities	24,038	25,573
Residential Pass-Through Securities [Member]
Available-for-sale securities	49,335	52,347
Residential Collateralized Mortgage Obligations [Member]
Available-for-sale securities	124,008	131,814
Commercial Mortgage Backed Securities [Member]
Available-for-sale securities	32,546	33,219
Fair Value, Measurements, Recurring [Member]
Fair value	1,369	1,299
Total asset fair value measurements	343,458	358,207
Nonrecurring fair value measurements
Total asset fair value measurements	343,458	358,207
Fair Value, Measurements, Recurring [Member] | US Government Agencies Debt Securities [Member]
Available-for-sale securities	7,803	7,873
Fair Value, Measurements, Recurring [Member] | Obligations of States and Political Subdivisions Tax Exempt [Member]
Available-for-sale securities	103,403	105,111
Fair Value, Measurements, Recurring [Member] | Obligations of States and Political Subdivisions Taxable [Member]
Available-for-sale securities	24,038	25,573
Fair Value, Measurements, Recurring [Member] | Residential Pass-Through Securities [Member]
Available-for-sale securities	49,335	52,347
Fair Value, Measurements, Recurring [Member] | Residential Collateralized Mortgage Obligations [Member]
Available-for-sale securities	124,008	131,814
Fair Value, Measurements, Recurring [Member] | Commercial Mortgage Backed Securities [Member]
Available-for-sale securities	32,546	33,219
Fair Value, Measurements, Nonrecurring [Member]
Total asset fair value measurements	4,179	4,191
Unpaid principal - with allowance	4,368	3,776
Valuation allowance	(1,289)	(1,183)
Impaired loans, net	3,079	2,593
Foreclosed residential real estate	1,100	1,598
Nonrecurring fair value measurements
Unpaid principal - with allowance	4,368	3,776
Valuation allowance	(1,289)	(1,183)
Impaired loans, net	3,079	2,593
Foreclosed residential real estate	1,100	1,598
Total asset fair value measurements	4,179	4,191
Fair Value, Inputs, Level 1 [Member]
Available-for-sale securities	0	0
Marketable equity security	956	971
Marketable equity security	956	971
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair value	0	0
Total asset fair value measurements	956	971
Nonrecurring fair value measurements
Total asset fair value measurements	956	971
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | US Government Agencies Debt Securities [Member]
Available-for-sale securities	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of States and Political Subdivisions Tax Exempt [Member]
Available-for-sale securities	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of States and Political Subdivisions Taxable [Member]
Available-for-sale securities	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Residential Pass-Through Securities [Member]
Available-for-sale securities	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Residential Collateralized Mortgage Obligations [Member]
Available-for-sale securities	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Commercial Mortgage Backed Securities [Member]
Available-for-sale securities	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total asset fair value measurements	0	0
Unpaid principal - with allowance	0	0
Valuation allowance	0	0
Impaired loans, net	0	0
Foreclosed residential real estate	0	0
Nonrecurring fair value measurements
Unpaid principal - with allowance	0	0
Valuation allowance	0	0
Impaired loans, net	0	0
Foreclosed residential real estate	0	0
Total asset fair value measurements	0	0
Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities	341,133	355,937
Marketable equity security	0	0
Marketable equity security	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair value	0	0
Total asset fair value measurements	341,133	355,937
Nonrecurring fair value measurements
Total asset fair value measurements	341,133	355,937
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | US Government Agencies Debt Securities [Member]
Available-for-sale securities	7,803	7,873
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of States and Political Subdivisions Tax Exempt [Member]
Available-for-sale securities	103,403	105,111
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of States and Political Subdivisions Taxable [Member]
Available-for-sale securities	24,038	25,573
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Residential Pass-Through Securities [Member]
Available-for-sale securities	49,335	52,347
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Residential Collateralized Mortgage Obligations [Member]
Available-for-sale securities	124,008	131,814
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Commercial Mortgage Backed Securities [Member]
Available-for-sale securities	32,546	33,219
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total asset fair value measurements	0	0
Unpaid principal - with allowance	0	0
Valuation allowance	0	0
Impaired loans, net	0	0
Foreclosed residential real estate	0	0
Nonrecurring fair value measurements
Unpaid principal - with allowance	0	0
Valuation allowance	0	0
Impaired loans, net	0	0
Foreclosed residential real estate	0	0
Total asset fair value measurements	0	0
Fair Value, Inputs, Level 3 [Member]
Available-for-sale securities	0	0
Marketable equity security	0	0
Marketable equity security	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair value	1,369	1,299
Total asset fair value measurements	1,369	1,299
Nonrecurring fair value measurements
Total asset fair value measurements	1,369	1,299
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | US Government Agencies Debt Securities [Member]
Available-for-sale securities	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of States and Political Subdivisions Tax Exempt [Member]
Available-for-sale securities	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of States and Political Subdivisions Taxable [Member]
Available-for-sale securities	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Residential Pass-Through Securities [Member]
Available-for-sale securities	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Residential Collateralized Mortgage Obligations [Member]
Available-for-sale securities	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Commercial Mortgage Backed Securities [Member]
Available-for-sale securities	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Total asset fair value measurements	4,179	4,191
Unpaid principal - with allowance	4,368	3,776
Valuation allowance	(1,289)	(1,183)
Impaired loans, net	3,079	2,593
Foreclosed residential real estate	1,100	1,598
Nonrecurring fair value measurements
Unpaid principal - with allowance	4,368	3,776
Valuation allowance	(1,289)	(1,183)
Impaired loans, net	3,079	2,593
Foreclosed residential real estate	1,100	1,598
Total asset fair value measurements	$ 4,179	$ 4,191

Note 5 - Fair Value Measureme41

Note 5 - Fair Value Measurements and Fair Values of Financial Instruments - Valuation Techniques and the Unobservable Inputs Used in Determining Fair Value - Recurring Basis (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Measurements, Recurring [Member]
Fair value	$ 1,369,000	$ 1,299,000
Valuation Technique, Discounted Cash Flow [Member] | Servicing Rights Assets [Member]
Discount rate	13.00%	13.00%
Weighted-average PSA	118.00%	140.00%
Servicing fees of loan balances	0.25%	0.25%
Servicing fees of payments are late	4.00%	4.00%
Late fees assessed	5.00%	5.00%
Miscellaneous fees per account per month	$ 1.94	$ 1.94
Monthly servicing cost per account	6	6
Additional monthly servicing cost per loan on loans more than 30 days delinquent	$ 24	$ 24
Servicing costs of loans more than 30 days delinquent	1.50%	1.50%
Annual increase in servicing costs	3.00%	3.00%
Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Measurements, Recurring [Member]
Fair value	$ 1,369,000	$ 1,299,000

Note 5 - Fair Value Measureme42

Note 5 - Fair Value Measurements and Fair Values of Financial Instruments - Reconciliation of Activity for Level 3 Assets Measured at Fair Value on a Recurring Basis (Details) - Servicing Rights Assets [Member] - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Servicing rights balance, beginning of period	$ 1,299	$ 1,262
Issuances of servicing rights	50	46
Unrealized gains (losses) included in earnings	20	(30)
Servicing rights balance, end of period	$ 1,369	$ 1,278

Note 5 - Fair Value Measureme43

Note 5 - Fair Value Measurements and Fair Values of Financial Instruments - Valuation Techniques and the Unobservable Inputs Used in Determining Fair Value - Nonrecurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Recorded investment - with allowance	$ 4,699	$ 4,100
Related allowance	1,371	1,279
Fair Value, Measurements, Nonrecurring [Member]
Recorded investment - with allowance	3,079	2,593
Related allowance	1,289	1,183
Fair value	3,079	2,593
Foreclosed assets held for sale	1,100	1,598
Fair value	1,100	1,598
Land Receivable [Member] | Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair value	632	632
Commercial Real Estate Receivables [Member] | Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair value	72	245
Residential Portfolio Segment [Member]
Foreclosed assets held for sale	396	721
Residential Portfolio Segment [Member] | Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair value	396	721
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair value	393	393
Commercial Portfolio Segment [Member] | Real Estate Loan [Member]
Recorded investment - with allowance	2,607	2,641
Related allowance	884	919
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair value	1,723	1,722
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Recorded investment - with allowance	406	449
Related allowance	157	188
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair value	0	34
Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member]
Recorded investment - with allowance	494	495
Related allowance	50	50
Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member] | Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair value	444	444
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Recorded investment - with allowance	677	0
Related allowance	158	0
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair value	519
Impaired Loans [Member]
Recorded investment - with allowance	4,368	3,776
Related allowance	$ 1,289	$ 1,183
Discount rate
Impaired Loans [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Valuation, Market Approach [Member]
Recorded investment - with allowance	$ 515	$ 515
Related allowance	$ 122	$ 122
Discount rate	26.00%	26.00%
Impaired Loans [Member] | Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Valuation, Market Approach [Member]
Recorded investment - with allowance	$ 2,607	$ 2,641
Related allowance	$ 884	$ 919
Impaired Loans [Member] | Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Valuation, Market Approach [Member] | Weighted Average [Member]
Discount rate	16.00%	16.00%
Impaired Loans [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Valuation, Market Approach [Member]
Recorded investment - with allowance	$ 75	$ 126
Related allowance	$ 75	$ 92
Impaired Loans [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Valuation, Market Approach [Member] | Weighted Average [Member]
Discount rate	100.00%	72.00%
Impaired Loans [Member] | Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member] | Valuation, Market Approach [Member]
Recorded investment - with allowance	$ 494	$ 494
Related allowance	$ 50	$ 50
Impaired Loans [Member] | Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member] | Valuation, Market Approach [Member] | Weighted Average [Member]
Discount rate	53.00%	53.00%
Impaired Loans [Member] | Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Valuation, Market Approach [Member]
Recorded investment - with allowance	$ 677
Related allowance	$ 158
Impaired Loans [Member] | Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Valuation, Market Approach [Member] | Weighted Average [Member]
Discount rate	36.00%
Foreclosed Assets Held For Sale [Member]
Foreclosed assets held for sale	$ 1,100	$ 1,598
Valuation allowance	0	0
Foreclosed Assets Held For Sale [Member] | Land Receivable [Member] | Valuation, Market Approach [Member]
Foreclosed assets held for sale	632	632
Valuation allowance	$ 0	$ 0
Foreclosed Assets Held For Sale [Member] | Land Receivable [Member] | Valuation, Market Approach [Member] | Weighted Average [Member]
Discount rate	35.00%	35.00%
Foreclosed Assets Held For Sale [Member] | Commercial Real Estate Receivables [Member] | Valuation, Market Approach [Member]
Foreclosed assets held for sale	$ 72	$ 245
Valuation allowance	$ 0	$ 0
Foreclosed Assets Held For Sale [Member] | Commercial Real Estate Receivables [Member] | Valuation, Market Approach [Member] | Weighted Average [Member]
Discount rate	76.00%	71.00%
Foreclosed Assets Held For Sale [Member] | Residential Portfolio Segment [Member] | Valuation, Market Approach [Member]
Foreclosed assets held for sale	$ 396	$ 721
Valuation allowance	$ 0	$ 0
Foreclosed Assets Held For Sale [Member] | Residential Portfolio Segment [Member] | Valuation, Market Approach [Member] | Weighted Average [Member]
Discount rate	32.00%	37.00%

Note 5 - Fair Value Measureme44

Note 5 - Fair Value Measurements and Fair Values of Financial Instruments - Estimated Fair Values, and Related Carrying Amounts, of the Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Reported Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets:
Cash and cash equivalents	$ 34,340	$ 37,004
Loans held for sale	225	765
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Financial assets:
Certificates of deposit	2,520	3,240
Restricted equity securities (included in Other Assets)	6,228	6,556
Accrued interest receivable	3,899	4,048
Financial liabilities:
Short-term borrowings	26,482	61,766
Long-term borrowings	18,122	9,189
Accrued interest payable	61	46
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Deposits With No Stated Maturity [Member]
Financial liabilities:
Deposits, fair value	793,351	794,778
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Time Deposits [Member]
Financial liabilities:
Deposits, fair value	224,730	213,671
Reported Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Financial assets:
Loans, net	808,300	806,857
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets:
Cash and cash equivalents	34,340	37,004
Loans held for sale	225	765
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Financial assets:
Certificates of deposit	2,508	3,234
Restricted equity securities (included in Other Assets)	6,228	6,556
Accrued interest receivable	3,899	4,048
Financial liabilities:
Short-term borrowings	26,263	61,643
Long-term borrowings	18,155	9,256
Accrued interest payable	61	46
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Deposits With No Stated Maturity [Member]
Financial liabilities:
Deposits, fair value	793,351	794,778
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Time Deposits [Member]
Financial liabilities:
Deposits, fair value	224,814	213,734
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Financial assets:
Loans, net	$ 808,653	$ 789,891

Note 6 - Securities (Details Te

Note 6 - Securities (Details Textual)		3 Months Ended		12 Months Ended
		Mar. 31, 2018USD ($)	Mar. 31, 2017USD ($)	Dec. 31, 2017USD ($)		Jan. 01, 2018USD ($)
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities		$ 0	$ 0
Equity Securities, FV-NI, Unrealized Gain (Loss), Total		(15,000)	0
Equity Securities, FV-NI, Realized Gain (Loss), Total		0	$ 0
Other Assets [Member] | Federal Home Loan Bank of Pittsburgh [Member]
Federal Home Loan Bank Stock		$ 5,142,000		$ 6,426,000
Accounting Standards Update 2016-01 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	[1]			0
Accounting Standards Update 2016-01 [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption				(22,000)	[1]	$ (22,000)
Accounting Standards Update 2016-01 [Member] | AOCI Attributable to Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption				$ 22,000	[1]	$ 22,000
Mutual Fund [Member]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Total		1		1
Equity Securities Unrealized Loss Cumulative Amount		$ 44,000		$ 29,000
Mutual Fund [Member] | Other Noninterest Income [Member]
Equity Securities, FV-NI, Unrealized Gain (Loss), Total		(15,000)
FHLB Stock [Member] | Federal Home Loan Bank of Pittsburgh [Member]
Other than Temporary Impairment Losses, Investments, Total		0		0
Investment Securities [Member]
Debt Securities, Available-for-sale, Restricted		$ 209,321,000		$ 217,925,000
[1]	As described in more detail in the Recent Accounting Pronouncements - Adopted section of Note 1, this reclassification resulted from adoption of ASU 2016-01, Recognition and Measurement of Financial Assets and Liabilities, effective January 1, 2018.

Note 6 - Securities - Available

Note 6 - Securities - Available-for-sale Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Total, amortized cost	$ 348,320	$ 358,317
Available-for-sale securities, gross unrealized holding gains	1,859	2,710
Available-for-sale securities, gross unrealized holding losses	(9,046)	(5,090)
Available-for-sale debt securities, at fair value	341,133	355,937
US Government Agencies Debt Securities [Member]
Total, amortized cost	8,023	8,026
Available-for-sale securities, gross unrealized holding gains	0	0
Available-for-sale securities, gross unrealized holding losses	(220)	(153)
Available-for-sale debt securities, at fair value	7,803	7,873
Obligations of States and Political Subdivisions Tax Exempt [Member]
Total, amortized cost	103,598	103,673
Available-for-sale securities, gross unrealized holding gains	1,651	2,291
Available-for-sale securities, gross unrealized holding losses	(1,846)	(853)
Available-for-sale debt securities, at fair value	103,403	105,111
Obligations of States and Political Subdivisions Taxable [Member]
Total, amortized cost	24,140	25,431
Available-for-sale securities, gross unrealized holding gains	98	226
Available-for-sale securities, gross unrealized holding losses	(200)	(84)
Available-for-sale debt securities, at fair value	24,038	25,573
Residential Pass-Through Securities [Member]
Total, amortized cost	50,880	52,992
Available-for-sale securities, gross unrealized holding gains	66	79
Available-for-sale securities, gross unrealized holding losses	(1,611)	(724)
Available-for-sale debt securities, at fair value	49,335	52,347
Residential Collateralized Mortgage Obligations [Member]
Total, amortized cost	127,886	134,314
Available-for-sale securities, gross unrealized holding gains	44	110
Available-for-sale securities, gross unrealized holding losses	(3,922)	(2,610)
Available-for-sale debt securities, at fair value	124,008	131,814
Commercial Mortgage Backed Securities [Member]
Total, amortized cost	33,793	33,881
Available-for-sale securities, gross unrealized holding gains	0	4
Available-for-sale securities, gross unrealized holding losses	(1,247)	(666)
Available-for-sale debt securities, at fair value	$ 32,546	$ 33,219

Note 6 - Securities - Availab47

Note 6 - Securities - Available-for-sale Securities With Unrealized Loss Positions (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	$ 146,199	$ 119,109
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(3,049)	(1,184)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	133,568	140,056
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	(5,997)	(3,906)
Available-for-sale securities with unrealized loss positions, fair value	279,767	259,165
Available-for-sale securities, with unrealized loss positions, unrealized losses	(9,046)	(5,090)
US Government Agencies Debt Securities [Member]
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	0	0
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	0	0
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	7,803	7,873
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	(220)	(153)
Available-for-sale securities with unrealized loss positions, fair value	7,803	7,873
Available-for-sale securities, with unrealized loss positions, unrealized losses	(220)	(153)
Obligations of States and Political Subdivisions Tax Exempt [Member]
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	30,641	19,050
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(439)	(135)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	23,636	24,391
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	(1,407)	(718)
Available-for-sale securities with unrealized loss positions, fair value	54,277	43,441
Available-for-sale securities, with unrealized loss positions, unrealized losses	(1,846)	(853)
Obligations of States and Political Subdivisions Taxable [Member]
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	14,526	9,279
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(143)	(45)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	2,245	2,116
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	(57)	(39)
Available-for-sale securities with unrealized loss positions, fair value	16,771	11,395
Available-for-sale securities, with unrealized loss positions, unrealized losses	(200)	(84)
Residential Pass-Through Securities [Member]
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	27,259	25,255
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(718)	(242)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	21,227	22,549
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	(893)	(482)
Available-for-sale securities with unrealized loss positions, fair value	48,486	47,804
Available-for-sale securities, with unrealized loss positions, unrealized losses	(1,611)	(724)
Residential Collateralized Mortgage Obligations [Member]
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	55,506	50,812
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(1,210)	(589)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	64,378	68,558
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	(2,712)	(2,021)
Available-for-sale securities with unrealized loss positions, fair value	119,884	119,370
Available-for-sale securities, with unrealized loss positions, unrealized losses	(3,922)	(2,610)
Commercial Mortgage Backed Securities [Member]
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	18,267	14,713
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(539)	(173)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	14,279	14,569
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	(708)	(493)
Available-for-sale securities with unrealized loss positions, fair value	32,546	29,282
Available-for-sale securities, with unrealized loss positions, unrealized losses	$ (1,247)	$ (666)

Note 6 - Securities - Gross Rea

Note 6 - Securities - Gross Realized Gains and Losses From Available-for-sale Securities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Gross realized gains from sales	$ 0	$ 161
Gross realized losses from sales	0	(16)
Net realized gains	$ 0	$ 145

Note 6 - Securities - Availab49

Note 6 - Securities - Available-for-sale Debt Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Due in one year or less, amortized cost	$ 18,713
Due in one year or less, fair value	18,844
Due from one year through five years. amortized cost	63,703
Due from one year through five years, fair value	63,793
Due from five years through ten years, amortized cost	33,100
Due from five years through ten years, fair value	32,226
Due after ten years, amortized cost	20,245
Due after ten years, fair value	20,381
Sub-total, amortized cost	135,761
Sub-total, fair value	135,244
Total, amortized cost	348,320	$ 358,317
Available-for-sale debt securities, at fair value	341,133	355,937
Residential Pass-Through Securities [Member]
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, amortized cost	50,880
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, fair value	49,335
Total, amortized cost	50,880	52,992
Available-for-sale debt securities, at fair value	49,335	52,347
Residential Collateralized Mortgage Obligations [Member]
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, amortized cost	127,886
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, fair value	124,008
Total, amortized cost	127,886	134,314
Available-for-sale debt securities, at fair value	124,008	$ 131,814
Commercial Mortgage-backed Securities [Member]
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, amortized cost	33,793
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, fair value	$ 32,546

Note 7 - Loans (Details Textual

Note 7 - Loans (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses, Ending Balance	$ 9,049,000	$ 8,856,000	$ 8,744,000	$ 8,473,000
Loans and Leases Receivable, Impaired, Commitment to Lend	0	0
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses, Ending Balance	4,433,000	4,235,000	4,255,000	4,047,000
Residential Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses, Ending Balance	3,943,000	3,963,000	3,959,000	3,890,000
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses, Ending Balance	174,000	159,000	$ 132,000	$ 138,000
Maximum [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Individually Evaluated for Impairment Threshold With Estimated Loss	200,000
Maximum [Member] | Residential Portfolio Segment [Member]
Financing Receivable Individually Evaluated for Impairment Threshold With Estimated Loss	400,000
Maximum [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Individually Evaluated for Impairment Threshold With Estimated Loss	400,000
Minimum [Member]
Financing Receivable Individually Evaluated for Impairment Estimated Loss Trigger	$ 100,000
Commercial Loan [Member]
Loans Receivable Secured by Real Estate Percentage	53.00%
Unfunded Loan Commitment [Member]
Financing Receivable, Allowance for Credit Losses, Ending Balance	$ 0	$ 0
Loans Receivable 1 [Member] | Credit Availability Concentration Risk [Member]
Concentration Risk, Percentage	0.00%	0.00%

Note 7 - Loans - Loans Receivab

Note 7 - Loans - Loans Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Loans receivable	$ 817,349	$ 815,713
Allowance for loan losses	(9,049)	(8,856)	$ (8,744)	$ (8,473)
Loans, net	808,300	806,857
Residential Portfolio Segment [Member]
Loans receivable	445,041	447,286
Allowance for loan losses	(3,943)	(3,963)	(3,959)	(3,890)
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Senior Lien [Member]
Loans receivable	358,786	359,987
Allowance for loan losses	(3,067)	(3,200)	(3,125)	(3,033)
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Junior Lien [Member]
Loans receivable	25,870	25,325
Allowance for loan losses	(351)	(224)	(256)	(258)
Residential Portfolio Segment [Member] | Home Equity Line of Credit 1 [Member]
Loans receivable	34,595	35,758
Allowance for loan losses	(286)	(296)	(338)	(350)
Residential Portfolio Segment [Member] | Construction Loans [Member]
Loans receivable	25,790	26,216
Allowance for loan losses	(239)	(243)	(240)	(249)
Commercial Portfolio Segment [Member]
Loans receivable	356,891	353,488
Allowance for loan losses	(4,433)	(4,235)	(4,255)	(4,047)
Commercial Portfolio Segment [Member] | Real Estate Loan [Member]
Loans receivable	161,571	159,266
Allowance for loan losses	(2,635)	(2,584)	(2,685)	(2,380)
Commercial Portfolio Segment [Member] | Construction Loans [Member]
Loans receivable	13,232	14,527
Allowance for loan losses	(137)	(150)	(169)	(162)
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Loans receivable	89,346	88,276
Allowance for loan losses	(1,036)	(1,065)	(906)	(999)
Commercial Portfolio Segment [Member] | Political Subdivisions [Member]
Loans receivable	56,224	59,287
Allowance for loan losses	0	0
Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member]
Loans receivable	7,015	7,255
Allowance for loan losses	(102)	(105)	(111)	(110)
Commercial Portfolio Segment [Member] | Multifamily 5 or More Residential [Member]
Loans receivable	7,621	7,713
Allowance for loan losses	(169)	(172)	(236)	(241)
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Loans receivable	5,803	6,178
Allowance for loan losses	(205)	(57)	(39)	(40)
Commercial Portfolio Segment [Member] | Other Commercial Loans [Member]
Loans receivable	16,079	10,986
Allowance for loan losses	(149)	(102)	(109)	(115)
Consumer Portfolio Segment [Member]
Loans receivable	15,417	14,939
Allowance for loan losses	$ (174)	$ (159)	$ (132)	$ (138)

Note 7 - Loans - Allowance for

Note 7 - Loans - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Allowance for loan losses	$ 8,856	$ 8,473
Allowance for loan losses, charge-offs	(115)	(200)
Allowance for loan losses, recoveries	16	19
Allowance for loan losses, provision	292	452
Allowance for loan losses	9,049	8,744
Residential Portfolio Segment [Member]
Allowance for loan losses	3,963	3,890
Allowance for loan losses, charge-offs	(53)	(63)
Allowance for loan losses, recoveries	2	3
Allowance for loan losses, provision	31	129
Allowance for loan losses	3,943	3,959
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Senior Lien [Member]
Allowance for loan losses	3,200	3,033
Allowance for loan losses, charge-offs	(53)	(63)
Allowance for loan losses, recoveries	1	2
Allowance for loan losses, provision	(81)	153
Allowance for loan losses	3,067	3,125
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Junior Lien [Member]
Allowance for loan losses	224	258
Allowance for loan losses, charge-offs	0	0
Allowance for loan losses, recoveries	1	1
Allowance for loan losses, provision	126	(3)
Allowance for loan losses	351	256
Residential Portfolio Segment [Member] | Home Equity Line of Credit 1 [Member]
Allowance for loan losses	296	350
Allowance for loan losses, charge-offs	0	0
Allowance for loan losses, recoveries	0	0
Allowance for loan losses, provision	(10)	(12)
Allowance for loan losses	286	338
Residential Portfolio Segment [Member] | Construction Loans [Member]
Allowance for loan losses	243	249
Allowance for loan losses, charge-offs	0	0
Allowance for loan losses, recoveries	0	0
Allowance for loan losses, provision	(4)	(9)
Allowance for loan losses	239	240
Commercial Portfolio Segment [Member]
Allowance for loan losses	4,235	4,047
Allowance for loan losses, charge-offs	(21)	(96)
Allowance for loan losses, recoveries	2	1
Allowance for loan losses, provision	217	303
Allowance for loan losses	4,433	4,255
Commercial Portfolio Segment [Member] | Real Estate Loan [Member]
Allowance for loan losses	2,584	2,380
Allowance for loan losses, charge-offs	(21)	(96)
Allowance for loan losses, recoveries	0	0
Allowance for loan losses, provision	72	401
Allowance for loan losses	2,635	2,685
Commercial Portfolio Segment [Member] | Construction Loans [Member]
Allowance for loan losses	150	162
Allowance for loan losses, charge-offs	0	0
Allowance for loan losses, recoveries	0	0
Allowance for loan losses, provision	(13)	7
Allowance for loan losses	137	169
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Allowance for loan losses	1,065	999
Allowance for loan losses, charge-offs	0	0
Allowance for loan losses, recoveries	2	1
Allowance for loan losses, provision	(31)	(94)
Allowance for loan losses	1,036	906
Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member]
Allowance for loan losses	105	110
Allowance for loan losses, charge-offs	0	0
Allowance for loan losses, recoveries	0	0
Allowance for loan losses, provision	(3)	1
Allowance for loan losses	102	111
Commercial Portfolio Segment [Member] | Multifamily 5 or More Residential [Member]
Allowance for loan losses	172	241
Allowance for loan losses, charge-offs	0	0
Allowance for loan losses, recoveries	0	0
Allowance for loan losses, provision	(3)	(5)
Allowance for loan losses	169	236
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Allowance for loan losses	57	40
Allowance for loan losses, charge-offs	0	0
Allowance for loan losses, recoveries	0	0
Allowance for loan losses, provision	148	(1)
Allowance for loan losses	205	39
Commercial Portfolio Segment [Member] | Other Commercial Loans [Member]
Allowance for loan losses	102	115
Allowance for loan losses, charge-offs	0	0
Allowance for loan losses, recoveries	0	0
Allowance for loan losses, provision	47	(6)
Allowance for loan losses	149	109
Consumer Portfolio Segment [Member]
Allowance for loan losses	159	138
Allowance for loan losses, charge-offs	(41)	(41)
Allowance for loan losses, recoveries	12	15
Allowance for loan losses, provision	44	20
Allowance for loan losses	174	132
Unallocated Financing Receivables [Member]
Allowance for loan losses	499	398
Allowance for loan losses, charge-offs	0	0
Allowance for loan losses, recoveries	0	0
Allowance for loan losses, provision	0	0
Allowance for loan losses	$ 499	$ 398

Note 7 - Loans - Outstanding Lo

Note 7 - Loans - Outstanding Loans by Risk Rating (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Loans receivable	$ 817,349	$ 815,713
Residential Portfolio Segment [Member]
Loans receivable	445,041	447,286
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Senior Lien [Member]
Loans receivable	358,786	359,987
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Junior Lien [Member]
Loans receivable	25,870	25,325
Residential Portfolio Segment [Member] | Home Equity Line of Credit 1 [Member]
Loans receivable	34,595	35,758
Residential Portfolio Segment [Member] | Construction Loans [Member]
Loans receivable	25,790	26,216
Commercial Portfolio Segment [Member]
Loans receivable	356,891	353,488
Commercial Portfolio Segment [Member] | Real Estate Loan [Member]
Loans receivable	161,571	159,266
Commercial Portfolio Segment [Member] | Construction Loans [Member]
Loans receivable	13,232	14,527
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Loans receivable	89,346	88,276
Commercial Portfolio Segment [Member] | Political Subdivisions [Member]
Loans receivable	56,224	59,287
Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member]
Loans receivable	7,015	7,255
Commercial Portfolio Segment [Member] | Multifamily 5 or More Residential [Member]
Loans receivable	7,621	7,713
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Loans receivable	5,803	6,178
Commercial Portfolio Segment [Member] | Other Commercial Loans [Member]
Loans receivable	16,079	10,986
Consumer Portfolio Segment [Member]
Loans receivable	15,417	14,939
Pass [Member]
Loans receivable	787,732	787,501
Pass [Member] | Residential Portfolio Segment [Member]
Loans receivable	434,876	436,853
Pass [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Senior Lien [Member]
Loans receivable	349,713	350,609
Pass [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Junior Lien [Member]
Loans receivable	25,328	24,795
Pass [Member] | Residential Portfolio Segment [Member] | Home Equity Line of Credit 1 [Member]
Loans receivable	34,045	35,233
Pass [Member] | Residential Portfolio Segment [Member] | Construction Loans [Member]
Loans receivable	25,790	26,216
Pass [Member] | Commercial Portfolio Segment [Member]
Loans receivable	337,473	335,795
Pass [Member] | Commercial Portfolio Segment [Member] | Real Estate Loan [Member]
Loans receivable	152,743	150,806
Pass [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member]
Loans receivable	13,155	14,449
Pass [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Loans receivable	82,445	82,724
Pass [Member] | Commercial Portfolio Segment [Member] | Political Subdivisions [Member]
Loans receivable	56,224	59,287
Pass [Member] | Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member]
Loans receivable	5,001	5,283
Pass [Member] | Commercial Portfolio Segment [Member] | Multifamily 5 or More Residential [Member]
Loans receivable	7,047	7,130
Pass [Member] | Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Loans receivable	4,851	5,203
Pass [Member] | Commercial Portfolio Segment [Member] | Other Commercial Loans [Member]
Loans receivable	16,007	10,913
Pass [Member] | Consumer Portfolio Segment [Member]
Loans receivable	15,383	14,853
Special Mention [Member]
Loans receivable	7,742	6,155
Special Mention [Member] | Residential Portfolio Segment [Member]
Loans receivable	512	472
Special Mention [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Senior Lien [Member]
Loans receivable	313	307
Special Mention [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Junior Lien [Member]
Loans receivable	100	104
Special Mention [Member] | Residential Portfolio Segment [Member] | Home Equity Line of Credit 1 [Member]
Loans receivable	99	61
Special Mention [Member] | Residential Portfolio Segment [Member] | Construction Loans [Member]
Loans receivable	0	0
Special Mention [Member] | Commercial Portfolio Segment [Member]
Loans receivable	7,230	5,683
Special Mention [Member] | Commercial Portfolio Segment [Member] | Real Estate Loan [Member]
Loans receivable	924	936
Special Mention [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member]
Loans receivable	0	0
Special Mention [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Loans receivable	5,412	3,896
Special Mention [Member] | Commercial Portfolio Segment [Member] | Political Subdivisions [Member]
Loans receivable	0	0
Special Mention [Member] | Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member]
Loans receivable	626	581
Special Mention [Member] | Commercial Portfolio Segment [Member] | Multifamily 5 or More Residential [Member]
Loans receivable	0	0
Special Mention [Member] | Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Loans receivable	268	270
Special Mention [Member] | Commercial Portfolio Segment [Member] | Other Commercial Loans [Member]
Loans receivable	0	0
Special Mention [Member] | Consumer Portfolio Segment [Member]
Loans receivable	0	0
Substandard [Member]
Loans receivable	21,800	21,982
Substandard [Member] | Residential Portfolio Segment [Member]
Loans receivable	9,601	9,909
Substandard [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Senior Lien [Member]
Loans receivable	8,708	9,019
Substandard [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Junior Lien [Member]
Loans receivable	442	426
Substandard [Member] | Residential Portfolio Segment [Member] | Home Equity Line of Credit 1 [Member]
Loans receivable	451	464
Substandard [Member] | Residential Portfolio Segment [Member] | Construction Loans [Member]
Loans receivable	0	0
Substandard [Member] | Commercial Portfolio Segment [Member]
Loans receivable	12,165	11,987
Substandard [Member] | Commercial Portfolio Segment [Member] | Real Estate Loan [Member]
Loans receivable	7,904	7,524
Substandard [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member]
Loans receivable	77	78
Substandard [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Loans receivable	1,478	1,645
Substandard [Member] | Commercial Portfolio Segment [Member] | Political Subdivisions [Member]
Loans receivable	0	0
Substandard [Member] | Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member]
Loans receivable	1,376	1,379
Substandard [Member] | Commercial Portfolio Segment [Member] | Multifamily 5 or More Residential [Member]
Loans receivable	574	583
Substandard [Member] | Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Loans receivable	684	705
Substandard [Member] | Commercial Portfolio Segment [Member] | Other Commercial Loans [Member]
Loans receivable	72	73
Substandard [Member] | Consumer Portfolio Segment [Member]
Loans receivable	34	86
Doubtful [Member]
Loans receivable	75	75
Doubtful [Member] | Residential Portfolio Segment [Member]
Loans receivable	52	52
Doubtful [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Senior Lien [Member]
Loans receivable	52	52
Doubtful [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Junior Lien [Member]
Loans receivable	0	0
Doubtful [Member] | Residential Portfolio Segment [Member] | Home Equity Line of Credit 1 [Member]
Loans receivable	0	0
Doubtful [Member] | Residential Portfolio Segment [Member] | Construction Loans [Member]
Loans receivable	0	0
Doubtful [Member] | Commercial Portfolio Segment [Member]
Loans receivable	23	23
Doubtful [Member] | Commercial Portfolio Segment [Member] | Real Estate Loan [Member]
Loans receivable	0	0
Doubtful [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member]
Loans receivable	0	0
Doubtful [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Loans receivable	11	11
Doubtful [Member] | Commercial Portfolio Segment [Member] | Political Subdivisions [Member]
Loans receivable	0	0
Doubtful [Member] | Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member]
Loans receivable	12	12
Doubtful [Member] | Commercial Portfolio Segment [Member] | Multifamily 5 or More Residential [Member]
Loans receivable	0	0
Doubtful [Member] | Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Loans receivable	0	0
Doubtful [Member] | Commercial Portfolio Segment [Member] | Other Commercial Loans [Member]
Loans receivable	0	0
Doubtful [Member] | Consumer Portfolio Segment [Member]
Loans receivable	$ 0	$ 0

Note 7 - Loans - Loan Balances

Note 7 - Loans - Loan Balances and Allowance for Loan Losses for Each Impairment Method (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Loans receivable: individually evaluated	$ 10,206	$ 9,511
Loans receivable: collectively evaluated	807,143	806,202
Loans receivable	817,349	815,713
Allowance for loan losses: individually evaluated	1,371	1,279
Allowance for loan losses: collectively evaluated	7,179	7,078
Allowance for loan losses	9,049	8,856	$ 8,744	$ 8,473
Residential Portfolio Segment [Member]
Loans receivable: individually evaluated	1,269	1,286
Loans receivable: collectively evaluated	443,772	446,000
Loans receivable	445,041	447,286
Allowance for loan losses: individually evaluated	122	122
Allowance for loan losses: collectively evaluated	3,821	3,841
Allowance for loan losses	3,943	3,963	3,959	3,890
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Senior Lien [Member]
Loans receivable: individually evaluated	969	984
Loans receivable: collectively evaluated	357,817	359,003
Loans receivable	358,786	359,987
Allowance for loan losses: individually evaluated	0	0
Allowance for loan losses: collectively evaluated	3,067	3,200
Allowance for loan losses	3,067	3,200	3,125	3,033
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Junior Lien [Member]
Loans receivable: individually evaluated	300	302
Loans receivable: collectively evaluated	25,570	25,023
Loans receivable	25,870	25,325
Allowance for loan losses: individually evaluated	122	122
Allowance for loan losses: collectively evaluated	229	102
Allowance for loan losses	351	224	256	258
Residential Portfolio Segment [Member] | Home Equity Line of Credit 1 [Member]
Loans receivable: individually evaluated	0	0
Loans receivable: collectively evaluated	34,595	35,758
Loans receivable	34,595	35,758
Allowance for loan losses: individually evaluated	0	0
Allowance for loan losses: collectively evaluated	286	296
Allowance for loan losses	286	296	338	350
Residential Portfolio Segment [Member] | Construction Loans [Member]
Loans receivable: individually evaluated	0	0
Loans receivable: collectively evaluated	25,790	26,216
Loans receivable	25,790	26,216
Allowance for loan losses: individually evaluated	0	0
Allowance for loan losses: collectively evaluated	239	243
Allowance for loan losses	239	243	240	249
Commercial Portfolio Segment [Member]
Loans receivable: individually evaluated	8,918	8,205
Loans receivable: collectively evaluated	347,973	345,283
Loans receivable	356,891	353,488
Allowance for loan losses: individually evaluated	1,249	1,157
Allowance for loan losses: collectively evaluated	3,184	3,078
Allowance for loan losses	4,433	4,235	4,255	4,047
Commercial Portfolio Segment [Member] | Real Estate Loan [Member]
Loans receivable: individually evaluated	5,982	5,873
Loans receivable: collectively evaluated	155,589	153,393
Loans receivable	161,571	159,266
Allowance for loan losses: individually evaluated	884	919
Allowance for loan losses: collectively evaluated	1,751	1,665
Allowance for loan losses	2,635	2,584	2,685	2,380
Commercial Portfolio Segment [Member] | Construction Loans [Member]
Loans receivable: individually evaluated	0	0
Loans receivable: collectively evaluated	13,232	14,527
Loans receivable	13,232	14,527
Allowance for loan losses: individually evaluated	0	0
Allowance for loan losses: collectively evaluated	137	150
Allowance for loan losses	137	150	169	162
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Loans receivable: individually evaluated	498	568
Loans receivable: collectively evaluated	88,848	87,708
Loans receivable	89,346	88,276
Allowance for loan losses: individually evaluated	157	188
Allowance for loan losses: collectively evaluated	879	877
Allowance for loan losses	1,036	1,065	906	999
Commercial Portfolio Segment [Member] | Political Subdivisions [Member]
Loans receivable: individually evaluated	0	0
Loans receivable: collectively evaluated	56,224	59,287
Loans receivable	56,224	59,287
Allowance for loan losses: individually evaluated	0	0
Allowance for loan losses: collectively evaluated	0	0
Allowance for loan losses	0	0
Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member]
Loans receivable: individually evaluated	1,362	1,365
Loans receivable: collectively evaluated	5,653	5,890
Loans receivable	7,015	7,255
Allowance for loan losses: individually evaluated	50	50
Allowance for loan losses: collectively evaluated	52	55
Allowance for loan losses	102	105	111	110
Commercial Portfolio Segment [Member] | Multifamily 5 or More Residential [Member]
Loans receivable: individually evaluated	392	392
Loans receivable: collectively evaluated	7,229	7,321
Loans receivable	7,621	7,713
Allowance for loan losses: individually evaluated	0	0
Allowance for loan losses: collectively evaluated	169	172
Allowance for loan losses	169	172	236	241
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Loans receivable: individually evaluated	684	7
Loans receivable: collectively evaluated	5,119	6,171
Loans receivable	5,803	6,178
Allowance for loan losses: individually evaluated	158	0
Allowance for loan losses: collectively evaluated	47	57
Allowance for loan losses	205	57	39	40
Commercial Portfolio Segment [Member] | Other Commercial Loans [Member]
Loans receivable: individually evaluated	0	0
Loans receivable: collectively evaluated	16,079	10,986
Loans receivable	16,079	10,986
Allowance for loan losses: individually evaluated	0	0
Allowance for loan losses: collectively evaluated	149	102
Allowance for loan losses	149	102	109	115
Consumer Portfolio Segment [Member]
Loans receivable: individually evaluated	19	20
Loans receivable: collectively evaluated	15,398	14,919
Loans receivable	15,417	14,939
Allowance for loan losses: individually evaluated	0	0
Allowance for loan losses: collectively evaluated	174	159
Allowance for loan losses	174	159	132	138
Unallocated Financing Receivables [Member]
Allowance for loan losses	$ 499	$ 499	$ 398	$ 398

Note 7 - Loans - Impaired Loans

Note 7 - Loans - Impaired Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
With no related allowance recorded:
Unpaid principal - with no allowance	$ 6,131	$ 6,035
Recorded investment - with no allowance	5,507	5,411
With a related allowance recorded:
Unpaid principal - with allowance	4,699	4,100
Recorded investment - with allowance	4,699	4,100
Related allowance	1,371	1,279
Unpaid principal	10,830	10,135
Recorded investment	10,206	9,511
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Senior Lien [Member]
With no related allowance recorded:
Unpaid principal - with no allowance	725	740
Recorded investment - with no allowance	696	711
With a related allowance recorded:
Unpaid principal - with allowance	273	273
Recorded investment - with allowance	273	273
Related allowance	0	0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Junior Lien [Member]
With no related allowance recorded:
Unpaid principal - with no allowance	58	60
Recorded investment - with no allowance	58	60
With a related allowance recorded:
Unpaid principal - with allowance	242	242
Recorded investment - with allowance	242	242
Related allowance	122	122
Commercial Portfolio Segment [Member] | Real Estate Loan [Member]
With no related allowance recorded:
Unpaid principal - with no allowance	3,375	3,230
Recorded investment - with no allowance	3,375	3,230
With a related allowance recorded:
Unpaid principal - with allowance	2,607	2,641
Recorded investment - with allowance	2,607	2,641
Related allowance	884	919
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
With no related allowance recorded:
Unpaid principal - with no allowance	92	119
Recorded investment - with no allowance	92	119
With a related allowance recorded:
Unpaid principal - with allowance	406	449
Recorded investment - with allowance	406	449
Related allowance	157	188
Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member]
With no related allowance recorded:
Unpaid principal - with no allowance	868	871
Recorded investment - with no allowance	868	871
With a related allowance recorded:
Unpaid principal - with allowance	494	495
Recorded investment - with allowance	494	495
Related allowance	50	50
Commercial Portfolio Segment [Member] | Multifamily 5 or More Residential [Member]
With no related allowance recorded:
Unpaid principal - with no allowance	987	987
Recorded investment - with no allowance	392	392
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
With no related allowance recorded:
Unpaid principal - with no allowance	7	8
Recorded investment - with no allowance	7	8
With a related allowance recorded:
Unpaid principal - with allowance	677	0
Recorded investment - with allowance	677	0
Related allowance	158	0
Consumer Portfolio Segment [Member]
With no related allowance recorded:
Unpaid principal - with no allowance	19	20
Recorded investment - with no allowance	$ 19	$ 20

Note 7 - Loans - Average Balanc

Note 7 - Loans - Average Balance of Impaired Loans and Income Recognized on Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Average investment in impaired loans	$ 9,858	$ 9,778
Interest income recognized on impaired loans on a cash basis	80	78
Residential Portfolio Segment [Member]
Average investment in impaired loans	1,347	815
Interest income recognized on impaired loans on a cash basis	22	10
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Senior Lien [Member]
Average investment in impaired loans	1,046	748
Interest income recognized on impaired loans on a cash basis	19	9
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Junior Lien [Member]
Average investment in impaired loans	301	67
Interest income recognized on impaired loans on a cash basis	3	1
Commercial Portfolio Segment [Member]
Average investment in impaired loans	8,492	8,930
Interest income recognized on impaired loans on a cash basis	58	68
Commercial Portfolio Segment [Member] | Real Estate Loan [Member]
Average investment in impaired loans	5,882	6,889
Interest income recognized on impaired loans on a cash basis	35	56
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Average investment in impaired loans	508	247
Interest income recognized on impaired loans on a cash basis	6	3
Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member]
Average investment in impaired loans	1,364	1,390
Interest income recognized on impaired loans on a cash basis	6	8
Commercial Portfolio Segment [Member] | Multifamily 5 or More Residential [Member]
Average investment in impaired loans	392	392
Interest income recognized on impaired loans on a cash basis	0	0
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Average investment in impaired loans	346	12
Interest income recognized on impaired loans on a cash basis	11	1
Consumer Portfolio Segment [Member]
Average investment in impaired loans	19	33
Interest income recognized on impaired loans on a cash basis	$ 0	$ 0

Note 7 - Loans - Nonaccrual Loa

Note 7 - Loans - Nonaccrual Loans and Loans Past Due Ninety Days or More and Still Accruing (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Loans past due 90+ days and accruing	$ 2,795	$ 3,724
Nonaccrual loans	13,587	13,404
Residential Portfolio Segment [Member]
Loans past due 90+ days and accruing	2,080	2,648
Nonaccrual loans	4,638	5,417
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Senior Lien [Member]
Loans past due 90+ days and accruing	1,840	2,340
Nonaccrual loans	4,354	5,131
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Junior Lien [Member]
Loans past due 90+ days and accruing	10	105
Nonaccrual loans	242	242
Residential Portfolio Segment [Member] | Home Equity Line of Credit 1 [Member]
Loans past due 90+ days and accruing	230	203
Nonaccrual loans	42	44
Commercial Portfolio Segment [Member]
Loans past due 90+ days and accruing	715	1,075
Nonaccrual loans	8,933	7,921
Commercial Portfolio Segment [Member] | Real Estate Loan [Member]
Loans past due 90+ days and accruing	128	175
Nonaccrual loans	6,000	5,645
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Loans past due 90+ days and accruing	347	603
Nonaccrual loans	498	517
Commercial Portfolio Segment [Member] | Construction Loans [Member]
Loans past due 90+ days and accruing	25	26
Nonaccrual loans	52	52
Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member]
Loans past due 90+ days and accruing	215	271
Nonaccrual loans	1,307	1,308
Commercial Portfolio Segment [Member] | Multifamily 5 or More Residential [Member]
Loans past due 90+ days and accruing	0	0
Nonaccrual loans	392	392
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Loans past due 90+ days and accruing	0	0
Nonaccrual loans	684	7
Consumer Portfolio Segment [Member]
Loans past due 90+ days and accruing	0	1
Nonaccrual loans	$ 16	$ 66

Note 7 - Loans - Contractual Ag

Note 7 - Loans - Contractual Aging of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Loans current and past due less than 30 days	$ 801,327	$ 794,938
Loans receivable	817,349	815,713
Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	7,318	10,190
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans past due	8,704	10,585
Residential Portfolio Segment [Member]
Loans current and past due less than 30 days	436,459	432,621
Loans receivable	445,041	447,286
Residential Portfolio Segment [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	5,139	9,335
Residential Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans past due	3,443	5,330
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Senior Lien [Member]
Loans current and past due less than 30 days	351,132	347,032
Loans receivable	358,786	359,987
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Senior Lien [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	4,475	7,967
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Senior Lien [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans past due	3,179	4,988
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Junior Lien [Member]
Loans current and past due less than 30 days	25,716	25,133
Loans receivable	25,870	25,325
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Junior Lien [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	144	87
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Junior Lien [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans past due	10	105
Residential Portfolio Segment [Member] | Home Equity Line of Credit 1 [Member]
Loans current and past due less than 30 days	33,960	34,789
Loans receivable	34,595	35,758
Residential Portfolio Segment [Member] | Home Equity Line of Credit 1 [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	381	732
Residential Portfolio Segment [Member] | Home Equity Line of Credit 1 [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans past due	254	237
Residential Portfolio Segment [Member] | Construction Loans [Member]
Loans current and past due less than 30 days	25,651	25,667
Loans receivable	25,790	26,216
Residential Portfolio Segment [Member] | Construction Loans [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	139	549
Residential Portfolio Segment [Member] | Construction Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans past due	0	0
Commercial Portfolio Segment [Member]
Loans current and past due less than 30 days	349,561	347,557
Loans receivable	356,891	353,488
Commercial Portfolio Segment [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	2,085	732
Commercial Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans past due	5,245	5,199
Commercial Portfolio Segment [Member] | Real Estate Loan [Member]
Loans current and past due less than 30 days	157,605	155,917
Loans receivable	161,571	159,266
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	581	311
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans past due	3,385	3,038
Commercial Portfolio Segment [Member] | Construction Loans [Member]
Loans current and past due less than 30 days	12,839	14,400
Loans receivable	13,232	14,527
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	316	49
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans past due	77	78
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Loans current and past due less than 30 days	88,386	87,306
Loans receivable	89,346	88,276
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	549	303
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans past due	411	667
Commercial Portfolio Segment [Member] | Political Subdivisions [Member]
Loans current and past due less than 30 days	56,224	59,287
Loans receivable	56,224	59,287
Commercial Portfolio Segment [Member] | Political Subdivisions [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	0	0
Commercial Portfolio Segment [Member] | Political Subdivisions [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans past due	0	0
Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member]
Loans current and past due less than 30 days	5,548	6,226
Loans receivable	7,015	7,255
Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	494	12
Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans past due	973	1,017
Commercial Portfolio Segment [Member] | Multifamily 5 or More Residential [Member]
Loans current and past due less than 30 days	7,229	7,321
Loans receivable	7,621	7,713
Commercial Portfolio Segment [Member] | Multifamily 5 or More Residential [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	0	0
Commercial Portfolio Segment [Member] | Multifamily 5 or More Residential [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans past due	392	392
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Loans current and past due less than 30 days	5,651	6,114
Loans receivable	5,803	6,178
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	145	57
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans past due	7	7
Commercial Portfolio Segment [Member] | Other Commercial Loans [Member]
Loans current and past due less than 30 days	16,079	10,986
Loans receivable	16,079	10,986
Commercial Portfolio Segment [Member] | Other Commercial Loans [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	0	0
Commercial Portfolio Segment [Member] | Other Commercial Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans past due	0	0
Consumer Portfolio Segment [Member]
Loans current and past due less than 30 days	15,307	14,760
Loans receivable	15,417	14,939
Consumer Portfolio Segment [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	94	123
Consumer Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans past due	$ 16	$ 56

Note 7 - Loans - Contractual 59

Note 7 - Loans - Contractual Aging of Nonaccrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Nonaccrual loans	$ 13,587	$ 13,404
Non accrual Loans [Member]
Loans current and past due, nonaccrual	6,287	5,802
Nonaccrual loans	13,587	13,404
Non accrual Loans [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Nonaccrual loans	1,391	741
Non accrual Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Nonaccrual loans	$ 5,909	$ 6,861

Note 7 - Loans - Aging of Troub

Note 7 - Loans - Aging of Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Loans current and past due less than 30 days	$ 801,327	$ 794,938
Nonaccrual loans	13,587	13,404
Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	7,318	10,190
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans past due	8,704	10,585
Troubled Debt Restructuring [Member]
Loans current and past due less than 30 days	774	636
Nonaccrual loans	2,987	3,027
Troubled debt restructurings	3,761	3,663
Troubled Debt Restructuring [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	0	0
Troubled Debt Restructuring [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans past due	$ 0	$ 0

Note 7 - Loans - Troubled Debt

Note 7 - Loans - Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)	Mar. 31, 2017USD ($)
Troubled debt restructurings, number of contracts	4	0
Troubled debt restructurings, post-modification recorded investment	$ 162	$ 0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Senior Lien [Member] | Monthly Payment Reduction for 6 Months [Member]
Troubled debt restructurings, number of contracts	1	0
Troubled debt restructurings, post-modification recorded investment	$ 80	$ 0
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Senior Lien [Member] | Extended Interest Payments for 6 Months [Member]
Troubled debt restructurings, number of contracts	2	0
Troubled debt restructurings, post-modification recorded investment	$ 36	$ 0
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Extended Interest Payments for 6 Months [Member]
Troubled debt restructurings, number of contracts	1	0
Troubled debt restructurings, post-modification recorded investment	$ 46	$ 0

Note 7 - Loans - Defaults on Lo

Note 7 - Loans - Defaults on Loans With Previous Modifications (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)	Mar. 31, 2017USD ($)
Troubled debt restructuring defaults, number of contracts	0	4
Troubled debt restructuring defaults, recorded investment	$ 0	$ 347
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Senior Lien [Member]
Troubled debt restructuring defaults, number of contracts	0	2
Troubled debt restructuring defaults, recorded investment	$ 0	$ 293
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Junior Lien [Member]
Troubled debt restructuring defaults, number of contracts	0	1
Troubled debt restructuring defaults, recorded investment	$ 0	$ 28
Consumer Portfolio Segment [Member]
Troubled debt restructuring defaults, number of contracts	0	1
Troubled debt restructuring defaults, recorded investment	$ 0	$ 26

Note 7 - Loans - Foreclosed Res

Note 7 - Loans - Foreclosed Residential Real Estate (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Residential Portfolio Segment [Member]
Foreclosed residential real estate	$ 396	$ 721

Note 7 - Loans - Mortgage Loans

Note 7 - Loans - Mortgage Loans in Process of Foreclosure (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Residential Portfolio Segment [Member]
Residential real estate in process of foreclosure	$ 1,470	$ 1,789

Note 8 - Borrowed Funds (Detail

Note 8 - Borrowed Funds (Details Textual)	Mar. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Short-term Debt, Total	$ 26,482,000	$ 61,766,000
Carrying Value of Securities Sold under Repurchase Agreements and Deposits Received for Securities Loaned, Total	11,417,000	12,158,000
Securities Sold under Agreements to Repurchase [Member]
Short-term Debt, Total	$ 5,482,000	$ 3,766,000
Debt, Weighted Average Interest Rate	0.10%	0.10%
Federal Home Loan Bank of Pittsburgh [Member]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 494,290,000	$ 488,889,000
Number of Short-term Advances	7
Short-term Borrowing, Amount of Each Borrowing	$ 3,000,000
Federal Home Loan Bank of Pittsburgh [Member] | Federal Home Loan Bank Advances 1 [Member]
Debt Instrument, Interest Rate, Stated Percentage	1.72%
Federal Home Loan Bank of Pittsburgh [Member] | Federal Home Loan Bank Advances [Member]
Short-term Debt, Total	$ 21,000,000	$ 58,000,000
Federal Home Loan Bank of Pittsburgh [Member] | Overnight Borrowing [Member]
Debt Instrument, Interest Rate, Stated Percentage		1.54%
Short-term Debt, Total		$ 29,000,000
Federal Home Loan Bank of Pittsburgh [Member] | Other Short-term Advances [Member]
Short-term Debt, Total		$ 29,000,000
Short-term Debt, Weighted Average Interest Rate, at Point in Time		1.69%
Federal Home Loan Bank of Pittsburgh [Member] | Other Assets [Member]
Federal Home Loan Bank Stock	$ 5,142,000	$ 6,426,000

Note 8 - Borrowed Funds - Short

Note 8 - Borrowed Funds - Short-term Borrowings (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Short-term borrowings	$ 26,482,000	$ 61,766,000
Securities Sold under Agreements to Repurchase [Member]
Short-term borrowings	5,482,000	3,766,000
Federal Home Loan Bank of Pittsburgh [Member] | Federal Home Loan Bank Advances [Member]
Short-term borrowings	$ 21,000,000	$ 58,000,000

Note 8 - Borrowed Funds - Long-

Note 8 - Borrowed Funds - Long-term Borrowing Maturities (Details) - Federal Home Loan Bank of Pittsburgh [Member] - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Long-term borrowings from FHLB - Pittsburgh	$ 18,122	$ 9,189
Federal Home Loan Bank Borrowings Loan Maturing in 2018 with Rate of 1.63% [Member]
Long-term borrowings from FHLB - Pittsburgh	3,000	3,000
Federal Home Loan Bank Borrowings Loan Maturing in 2018 with Rate of 1.35% [Member]
Long-term borrowings from FHLB - Pittsburgh	3,000	3,000
Federal Home Loan Bank Borrowings Loan Maturing in 2019 with Rate of 1.83% [Member]
Long-term borrowings from FHLB - Pittsburgh	2,000	2,000
Federal Home Loan Bank Borrowings Loan Maturing in 2019 with Rate of 1.95% [Member]
Long-term borrowings from FHLB - Pittsburgh	3,000	0
Federal Home Loan Bank Borrowings Loan Maturing in 2019 with Rate of 2.15% [Member]
Long-term borrowings from FHLB - Pittsburgh	3,000	0
Federal Home Loan Bank Borrowings Loan Maturing in 2019 with Rate of 2.24% [Member]
Long-term borrowings from FHLB - Pittsburgh	3,000	0
Federal Home Loan Bank Borrowings Loan Maturing in 2020 with Rate of 4.79% [Member]
Long-term borrowings from FHLB - Pittsburgh	416	463
Federal Home Loan Bank Borrowings Loan Maturing in 2025 with Rate of 4.91% [Member]
Long-term borrowings from FHLB - Pittsburgh	$ 706	$ 726

Note 8 - Borrowed Funds - Lon68

Note 8 - Borrowed Funds - Long-term Borrowing Maturities (Details) (Parentheticals)	Mar. 31, 2018Rate	Dec. 31, 2017Rate
Federal Home Loan Bank Borrowings Loan Maturing in 2019 with Rate of 1.95% [Member]
Rate (Rate)	1.95%	1.95%
Federal Home Loan Bank Borrowings Loan Maturing in 2020 with Rate of 4.79% [Member]
Rate (Rate)	4.79%	4.79%
Federal Home Loan Bank Borrowings Loan Maturing in 2025 with Rate of 4.91% [Member]
Rate (Rate)	4.91%	4.91%
Federal Home Loan Bank of Pittsburgh [Member] | Federal Home Loan Bank Borrowings Loan Maturing in 2018 with Rate of 1.63% [Member]
Rate (Rate)	1.63%	1.63%
Federal Home Loan Bank of Pittsburgh [Member] | Federal Home Loan Bank Borrowings Loan Maturing in 2018 with Rate of 1.35% [Member]
Rate (Rate)	1.35%	1.35%
Federal Home Loan Bank of Pittsburgh [Member] | Federal Home Loan Bank Borrowings Loan Maturing in 2019 with Rate of 1.83% [Member]
Rate (Rate)	1.83%	1.83%
Federal Home Loan Bank of Pittsburgh [Member] | Federal Home Loan Bank Borrowings Loan Maturing in 2019 with Rate of 2.15% [Member]
Rate (Rate)	2.15%	2.15%
Federal Home Loan Bank of Pittsburgh [Member] | Federal Home Loan Bank Borrowings Loan Maturing in 2019 with Rate of 2.24% [Member]
Rate (Rate)	2.24%	2.24%

Note 9 - Defined Benefit Plan69

Note 9 - Defined Benefit Plans (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2018
Payment for Pension and Other Postretirement Benefits, Total	$ 12,000
Defined Benefit Plan Required Contributions in Current Fiscal Year	$ 0
Scenario, Forecast [Member]
Payment for Pension and Other Postretirement Benefits, Total		$ 60,000

Note 9 - Defined Benefit Plan70

Note 9 - Defined Benefit Plans - Net Periodic Benefit Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Pension Plan [Member]
Service cost	$ 0	$ 0
Interest cost	6	6
Expected return on plan assets	(5)	(8)
Prior service cost	0	0
Recognized net actuarial loss	3	2
Net periodic benefit cost	4	0
Other Postretirement Benefits Plan [Member]
Service cost	10	9
Interest cost	13	14
Expected return on plan assets	0	0
Prior service cost	(8)	(8)
Recognized net actuarial loss	0	0
Net periodic benefit cost	$ 15	$ 15

Note 10 - Stock-based Compens71

Note 10 - Stock-based Compensation Plans (Details Textual) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2018
Scenario, Forecast [Member]
Allocated Share-based Compensation Expense, Total			$ 714,000
Increase in Allocated Share-based Compensation Expense, Upon Meeting of Return on Average Equity Target			$ 190,000
Restricted Stock [Member]
Allocated Share-based Compensation Expense, Total	$ 183,000	$ 168,000
Stock Incentive Plan [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	25,466
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Stock Incentive Plan [Member] | Restricted Stock [Member] | Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	16,578
Independent Directors Stock Incentive Plan [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	9,086
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	1 year
Independent Directors Stock Incentive Plan [Member] | Restricted Stock [Member] | Vesting Contingent upon Corporation Meeting ROAE Performance Ratio [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	50.00%

Note 11 - Income Taxes (Details

Note 11 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	35.00%		35.00%
Income Tax Expense (Benefit), Included in AOCI				$ 325,000
Increase (Decrease) in Income Taxes	$ (14,000)	$ (18,000)
Unrecognized Tax Benefits, Ending Balance	0			0
Other Assets [Member]
Amortization Method Qualified Affordable Housing Project Investments	$ 581,000			$ 608,000
Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
Income Tax Credits and Adjustments			$ 150,000
Increase (Decrease) in Income Taxes			$ (54,000)

Note 11 - Income Taxes - Net De

Note 11 - Income Taxes - Net Deferred Tax Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Allowance for loan losses	$ 1,935	$ 1,894
Other deferred tax assets	1,544	1,726
Total deferred tax assets	4,987	4,126
Deferred tax liabilities:
Bank premises and equipment	765	751
Core deposit intangibles	2	3
Other deferred tax liabilities	63	64
Total deferred tax liabilities	867	837
Deferred tax asset, net	4,120	3,289
AOCI Attributable to Parent [Member]
Deferred tax assets:
Unrealized holding losses on securities	1,508	843
Deferred tax liabilities:
Defined benefit plans - ASC 835	37	31
Retained Earnings [Member]
Deferred tax assets:
Unrealized holding losses on securities	0	(337)
Deferred tax liabilities:
Defined benefit plans - ASC 835	$ 0	$ (12)

Note 11 - Income Taxes - Reconc

Note 11 - Income Taxes - Reconciliation of Income Tax (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income before income tax provision	$ 5,116	$ 4,418
Income tax provision	$ 741	$ 984
Effective tax rate	14.48%	22.27%

Note 13 - Revenue Recognition (

Note 13 - Revenue Recognition (Details Textual) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Assets Under Management Fair Value	$ 916,295,000	$ 916,580,000
Percent of Trust Asset Revenue Earned Monthly		81.00%