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				2,290		2,290
Other comprehensive income (loss), net of tax					85	85
Common stock cash dividends				(378)		(378)
Preferred stock cash dividends				(188)		(188)
Stock-based compensation			116			116
Issuance of common stock:
Shares under dividend reinvestment and stock purchase plan		16	52			68
Shares under stock option plan		9	24			33
Ending balance at Mar. 31, 2012	25,000	10,532	37,445	16,282	6,009	95,268
Beginning balance at Dec. 31, 2012	25,000	11,206	40,524	18,868	5,733	101,331
Net income				2,662		2,662
Other comprehensive income (loss), net of tax					(422)	(422)
Common stock cash dividends				(494)		(494)
Preferred stock cash dividends				(63)		(63)
Stock-based compensation			78			78
Issuance of common stock:
Shares under dividend reinvestment and stock purchase plan		14	79			93
Ending balance at Mar. 31, 2013	$ 25,000	$ 11,220	$ 40,681	$ 20,973	$ 5,311	$ 103,185