Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Assets
Cash and cash equivalents	$ 16,559	$ 19,207	$ 17,600
Interest bearing deposits in other banks	280	860	3,272
Securities available for sale	303,769	300,172	312,624
Securities to be held to maturity (fair value of $255,851,000 at March 31, 2018, $259,655,000 at December 31, 2017 and $239,378,000 at March 31, 2017)	258,690	256,567	240,829
Restricted equity securities, at cost	11,947	10,358	13,363
Loans held for sale	284	386	979
Loans	1,188,002	1,164,139	1,089,735
Less allowance for loan losses	10,957	10,729	10,367
Net loans	1,177,045	1,153,410	1,079,368
Accrued interest receivable	7,222	5,867	6,854
Premises and equipment, net	22,043	22,502	21,760
Other real estate owned	1,121	1,012	525
Goodwill	29,805	29,805	29,805
Other assets	43,050	42,784	36,849
Total assets	1,871,815	1,842,930	1,763,828
Liabilities
Demand deposits	137,674	145,332	130,319
NOW deposits	314,587	318,043	323,919
Money market deposits	108,726	163,898	142,220
Savings deposits	232,458	232,605	222,976
Certificates of deposit	634,747	559,001	527,049
Total deposits	1,428,192	1,418,879	1,346,483
Borrowed funds – short term	129,112	113,638	106,342
Borrowed funds – long term	115,117	115,120	120,125
Other liabilities	18,022	13,972	16,025
Total liabilities	1,690,443	1,661,609	1,588,975
Shareholders' equity
Common stock, one cent par value per share	108	108	108
Additional paid-in capital	61,999	61,747	60,991
Retained earnings	123,876	121,144	113,697
Accumulated other comprehensive income (loss)
Net unrealized loss on securities available for sale	(6,210)	(2,901)	(934)
Net unrealized loss on securities transferred from available for sale to held to maturity	(182)	(174)	(133)
Net unrealized gain on cash flow hedging derivative instruments	1,928	1,544	1,226
Net unrealized loss on postretirement benefit costs	(147)	(147)	(102)
Total shareholders' equity	181,372	181,321	174,853
Total liabilities & shareholders' equity	$ 1,871,815	$ 1,842,930	$ 1,763,828
Common Stock
Number of shares authorized (in shares)	18,000,000	18,000,000	18,000,000
Number of shares issued (in shares)	10,846,562	10,829,918	10,814,132
Number of shares outstanding (in shares)	10,846,562	10,829,918	10,814,132
Book value per common share (usd per share)	$ 16.72	$ 16.74	$ 16.17
Tangible book value per common share (usd per share)	$ 13.95	$ 13.97	$ 13.39