CONSOLIDATED CONDENSED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Retained Earnings [Member]	Treasury Shares [Member]	Accumulated Other Comprehensive Income [Member]
Balance Beginning (in shares) at Dec. 31, 2015		9,925,547
Balance beginning at Dec. 31, 2015	$ 140,108	$ 76,908	$ 74,629	$ (11,665)	$ 236
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	8,828		8,828
Other comprehensive income, net of taxes	3,286				3,286
Dividend Reinvestment and Stock Purchase Plan (in shares)		16,758
Dividend Reinvestment and Stock Purchase Plan	282	$ 282
Repurchase of stock warrants	(1,545)	$ (1,545)
Exercise of stock options (in shares)		51,390
Exercise of stock options	592	$ 592
Excess tax benefit on exercise of stock options	58	58
Compensation expense relating to stock options	4	4
Compensation expense relating to restricted stock	68	$ 68
Common stock dividends, $0.48 per share	(4,775)		(4,775)
Balance Ending (in shares) at Sep. 30, 2016		9,993,695
Balance ending at Sep. 30, 2016	146,906	$ 76,367	78,682	(11,665)	3,522
Balance Beginning (in shares) at Dec. 31, 2016		9,998,025
Balance beginning at Dec. 31, 2016	142,944	$ 76,490	80,736	(11,665)	(2,617)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	9,355		9,355
Other comprehensive income, net of taxes	1,831				1,831
Dividend Reinvestment and Stock Purchase Plan (in shares)		13,057
Dividend Reinvestment and Stock Purchase Plan	266	$ 266
Exercise of stock options (in shares)		3,398
Exercise of stock options	51	$ 51
Compensation expense relating to stock options	1	$ 1
Stock Issued During Period, Shares, Restricted Stock Award, Gross		4,027
Compensation expense relating to restricted stock	69	$ 69
Common stock dividends, $0.48 per share	(4,804)		(4,804)
Balance Ending (in shares) at Sep. 30, 2017		10,018,507
Balance ending at Sep. 30, 2017	$ 149,713	$ 76,877	$ 85,287	$ (11,665)	$ (786)