Consolidated Statements Of Changes In Shareholders' Equity (USD $) In Thousands, unless otherwise specified	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Total
Beginning balance at Dec. 31, 2011	$ 25,000	$ 10,507	$ 37,253	$ 14,558	$ 5,924	$ 93,242
Net income				6,940		6,940
Other comprehensive income (loss), net of tax					915	915
Common stock cash dividends				(1,223)		(1,223)
Common stock dividend		530	2,480	(3,010)		0
Preferred stock cash dividends				(321)		(321)
Stock-based compensation			261			261
Issuance of common stock:
Shares under dividend reinvestment and stock purchase plan		43	180			223
Shares under stock option plan		35	110			145
Shares under employee stock purchase plan		15	28			43
Ending balance at Sep. 30, 2012	25,000	11,130	40,312	16,944	6,839	100,225
Beginning balance at Dec. 31, 2012	25,000	11,206	40,524	18,868	5,733	101,331
Net income				7,984		7,984
Other comprehensive income (loss), net of tax					(2,767)	(2,767)
Common stock cash dividends				(1,531)		(1,531)
Common stock dividend		566	3,467	(4,033)		0
Preferred stock cash dividends				(187)		(187)
Stock-based compensation			236			236
Issuance of common stock:
Shares under dividend reinvestment and stock purchase plan		38	229			267
Shares under stock option plan		68	278			346
Shares under employee stock purchase plan		11	43			54
Ending balance at Sep. 30, 2013	$ 25,000	$ 11,889	$ 44,777	$ 21,101	$ 2,966	$ 105,733