Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (USD $) In Thousands, unless otherwise specified	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balances at Dec. 31, 2010	$ 8,667	$ 123,161	$ (2,641)	$ 129,187
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	0	8,240	0	8,240
Dividends	0	(3,329)	0	(3,329)
Stock options exercised	5	57	0	62
Other comprehensive income, net of tax	0	0	2,148	2,148
Balances at Jun. 30, 2011	8,672	128,129	(493)	136,308
Balances at Dec. 31, 2011	8,675	133,945	(1,321)	141,299
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	0	8,769	0	8,769
Dividends	0	(3,678)	0	(3,678)
Other comprehensive income, net of tax	0	0	297	297
Balances at Jun. 30, 2012	$ 8,675	$ 139,036	$ (1,024)	$ 146,687