CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Other Comprehensive Income	Retained Earnings (Deficit)	Comprehensive Income
Balance at Dec. 31, 2008	$ 93,551	$ 14	$ 99,732	$ (3,623)	$ 1,262	$ (3,834)
Balance (in shares) at Dec. 31, 2008		12,681,000
Increase (Decrease) in Stockholders' Equity
Stock option and warrant exercises, including related income tax benefit	945		945
Stock option and warrant exercises, including related income tax benefit (in shares)		193,000
Stock-based compensation expense	1,684		1,684
Purchases of common stock under a stock repurchase program	(2,631)			(2,631)
Purchases of common stock under a stock repurchase program (in shares)		(583,000)
Subtotal	93,549
Net income	3,357					3,357	3,357
Translation adjustments, net of taxes	849				849		849
Comprehensive income	4,206						4,206
Balance at Dec. 31, 2009	97,755	14	102,361	(6,254)	2,111	(477)
Balance (in shares) at Dec. 31, 2009		12,291,000
Increase (Decrease) in Stockholders' Equity
Stock option exercises and restricted stock awards, including related income tax benefit	168		168
Stock option exercises and restricted stock awards, including related income tax benefit (in shares)		58,000
Stock-based compensation expense	2,365		2,365
Purchases of common stock under a stock repurchase program	(922)			(922)
Purchases of common stock under a stock repurchase program (in shares)		(200,000)
Subtotal	99,366
Net income	7,573					7,573	7,573
Translation adjustments, net of taxes	354				354		354
Comprehensive income	7,927						7,927
Balance at Dec. 31, 2010	107,293	14	104,894	(7,176)	2,465	7,096
Balance (in shares) at Dec. 31, 2010	12,148,500	12,149,000
Increase (Decrease) in Stockholders' Equity
Stock option exercises and restricted stock awards, including related income tax benefit	763		763
Stock option exercises and restricted stock awards, including related income tax benefit (in shares)		279,000
Stock-based compensation expense	2,404		2,404
Purchases of common stock under a stock repurchase program	(2,557)			(2,557)
Purchases of common stock under a stock repurchase program (in shares)		(432,000)
Subtotal	107,903
Net income	3,132					3,132	3,132
Translation adjustments, net of taxes	(209)				(209)		(209)
Comprehensive income	2,923						2,923
Balance at Dec. 31, 2011	$ 110,826	$ 14	$ 108,061	$ (9,733)	$ 2,256	$ 10,228
Balance (in shares) at Dec. 31, 2011	11,995,704	11,996,000