CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - 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, 2014	$ 55	$ 22,401	$ 56,491	$ 21,866	$ 9,279	$ (460)	$ (5,437)	$ 104,195
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	0	4,388	0	0	0	4,388
Other comprehensive income (loss) , net of tax	0	0	0	0	(4,695)	0	0	(4,695)
Dividends on common stock	0	0	0	(412)	0	0	0	(412)
Dividends on preferred stock	0	0	0	(399)	0	0	0	(399)
Restricted stock grants	0	0	103	0	0	(178)	75	0
Amortization of unearned compensation	0	0	0	0	0	365	0	365
Purchase of shares for treasury	0	0	0	0	0	0	(997)	(997)
Issuance of shares under stock plans	0	0	29	0	0	0	18	47
Ending 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	2,636	0	0	0	2,636
Other comprehensive income (loss) , net of tax	0	0	0	0	1,246	0	0	1,246
Dividends on common stock	0	0	0	(408)	0	0	0	(408)
Dividends on preferred stock	0	0	0	(399)	0	0	0	(399)
Restricted stock grants	0	0	461	0	0	(741)	280	0
Amortization of unearned compensation	0	0	0	0	0	586	0	586
Purchase of shares for treasury	0	0	0	0	0	0	(698)	(698)
Issuance of shares under stock plans	0	0	30	0	0	0	21	51
Ending Balance at Dec. 31, 2016	$ 55	$ 22,401	$ 57,114	$ 27,272	$ 5,830	$ (428)	$ (6,738)	$ 105,506