Consolidated Statement of Stockholders’ Equity (USD $) In Thousands, except Share data	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
at Dec. 31, 2010	$ 279	$ 84,073	$ 42,381		$ 126,733
(in Shares) at Dec. 31, 2010	27,924
Stock-based compensation		2,331			2,331
Stock-based compensation (in Shares)	11
Exercise of employee stock options for shares	1	(1)
Exercise of employee stock options for shares (in Shares)	181
Taxes paid for shares issued to employees		(469)			100
Taxes paid for shares issued to employees (in Shares)	(41)
Stock issued on vesting of RSUs	3				3
Stock issued on vesting of RSUs (in Shares)	345
Taxes paid on vesting of RSUs		(1,192)			(1,192)
Taxes paid on vesting of RSUs (in Shares)	(111)
Tax benefit from stock-based compensation		1,242			1,242
Dividends			(3,505)		(3,505)
Net income			35,809		35,809
Other				41	41
at Dec. 31, 2011					$ 160,993