CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Shares	Retained Earnings	Treasury Shares	Accumulated Other Comprehensive Income (Loss)
Balance (in shares) at Dec. 31, 2012		6,731,900
Balance at Dec. 31, 2012	$ 82,006	$ 27,107	$ 61,843	$ (11,665)	$ 4,721
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	8,780		8,780
Other comprehensive gain (loss), net of taxes	(6,443)				(6,443)
Issuance of common stock (in shares)		1,642,857
Issuance of common stock	26,909	$ 26,909
Dividend Reinvestment and Stock Purchase Plan (in shares)		18,348
Dividend Reinvestment and Stock Purchase Plan	329	$ 329
Acquisition in shares)		888,811
Acquisition	$ 12,321	$ 12,321
Exercise of stock options (in shares)	5,620	5,620
Exercise of stock options	$ 70	$ 70
Excess tax benefit on exercise and forfeiture of stock options	12	12
Compensation expense relating to stock options	37	$ 37
Common stock dividends, $0.64 per share	(5,148)		(5,148)
Balance (in shares) at Dec. 31, 2013		9,287,536
Balance at Dec. 31, 2013	118,873	$ 66,785	65,475	(11,665)	(1,722)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	9,869		9,869
Other comprehensive gain (loss), net of taxes	2,507				2,507
Dividend Reinvestment and Stock Purchase Plan (in shares)		23,782
Dividend Reinvestment and Stock Purchase Plan	$ 372	$ 372
Exercise of stock options (in shares)	0
Compensation expense relating to stock options	$ 24	$ 24
Common stock dividends, $0.64 per share	(5,950)		(5,950)
Balance (in shares) at Dec. 31, 2014		9,311,318
Balance at Dec. 31, 2014	125,695	$ 67,181	69,394	(11,665)	785
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	11,474		11,474
Other comprehensive gain (loss), net of taxes	(549)				(549)
Dividend Reinvestment and Stock Purchase Plan (in shares)		24,610
Dividend Reinvestment and Stock Purchase Plan	390	$ 390
Acquisition in shares)		560,132
Acquisition	$ 9,063	$ 9,063
Exercise of stock options (in shares)	13,449	13,449
Exercise of stock options	$ 152	$ 152
Excess tax benefit on exercise and forfeiture of stock options	13	13
Compensation expense relating to stock options	19	$ 19
Compensation expense relating to restricted stock (in shares)		16,038
Compensation expense relating to restricted stock	90	$ 90
Common stock dividends, $0.64 per share	(6,239)		(6,239)
Balance (in shares) at Dec. 31, 2015		9,925,547
Balance at Dec. 31, 2015	$ 140,108	$ 76,908	$ 74,629	$ (11,665)	$ 236