Consolidated Statements Of Changes In Shareholders' Equity - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2014	$ 12,000	$ 14,577	$ 62,713	$ 26,483	$ 2,667	$ 0	$ 118,440
Net income				2,434			2,434
Other comprehensive income, net of tax					291		291
Common stock cash dividends				(729)			(729)
Preferred stock cash dividends				(30)			(30)
Stock-based compensation including related tax benefit			71				71
Forfeiture of restricted stock			6			(6)	0
Issuance and reissuance of common stock including related tax benefit:
Issuance of common stock shares under the dividend reinvestment and stock purchase plan		13	87				100
Issuance of common stock shares under the stock option plan		21	80				101
Balance at Mar. 31, 2015	12,000	14,611	62,957	28,158	2,958	(6)	120,678
Balance at Dec. 31, 2015	12,000	19,893	97,338	28,539	1,371	0	159,141
Net income				2,817			2,817
Other comprehensive income, net of tax					868		868
Common stock cash dividends				(1,035)			(1,035)
Preferred stock cash dividends				(16)			(16)
Redemption of preferred stock	(12,000)						(12,000)
Stock-based compensation including related tax benefit			123				123
Forfeiture of restricted stock			4			(4)	0
Issuance and reissuance of common stock including related tax benefit:
Issuance of common stock shares under the dividend reinvestment and stock purchase plan		13	94				107
Issuance of common stock shares under the stock option plan			10			2	12
Issuance of common stock shares of stock-based compensation awards		3	(3)				0
Balance at Mar. 31, 2016	$ 0	$ 19,909	$ 97,566	$ 30,305	$ 2,239	$ (2)	$ 150,017