CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Unearned Stock Grant Compensation [Member]	Treasury Stock [Member]	Total
Beginning Balance at Dec. 31, 2015	$ 55	$ 22,401	$ 56,623	$ 25,443	$ 4,584	$ (273)	$ (6,341)	$ 102,492
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	0	1,288	0	0	0	1,288
Other comprehensive income, net of tax	0	0	0	0	5,943	0	0	5,943
Dividends on common stock	0	0	0	(408)	0	0	0	(408)
Dividends accrued on preferred stock	0	0	0	(299)	0	0	0	(299)
Restricted stock grants	0	0	346	0	0	(556)	210	0
Amortization of unearned compensation	0	0	0	0	0	457	0	457
Purchase of shares for treasury	0	0	0	0	0	0	(565)	(565)
Issuance of shares under stock plans	0	0	26	0	0	0	17	43
Ending Balance at Sep. 30, 2016	55	22,401	56,995	26,024	10,527	(372)	(6,679)	108,951
Beginning Balance at Dec. 31, 2016	55	22,401	57,114	27,272	5,830	(428)	(6,738)	105,506
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	0	1,986	0	0	0	1,986
Other comprehensive income, net of tax	0	0	0	0	2,895	0	0	2,895
Dividends on common stock	0	0	0	(408)	0	0	0	(408)
Dividends accrued on preferred stock	0	0	0	(299)	0	0	0	(299)
Restricted stock grants	0	0	293	0	0	(522)	229	0
Amortization of unearned compensation	0	0	0	0	0	363	0	363
Purchase of shares for treasury	0	0	0	0	0	0	(546)	(546)
Issuance of shares under stock plans	0	0	13	0	0	0	10	23
Ending Balance at Sep. 30, 2017	$ 55	$ 22,401	$ 57,420	$ 28,551	$ 8,725	$ (587)	$ (7,045)	$ 109,520