Condensed Consolidated Statement Of Stockholders' Equity (USD $) In Thousands, except Share data	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Retained Earnings (Deficit) [Member]	Total
Balance at December 31, 2012 at Dec. 31, 2012	$ 39	$ 276,201	$ (306)	$ (62,970)	$ 21,449	$ 234,413
Balance at December 31, 2012, shares at Dec. 31, 2012	30,825,000					30,825,123
Proceeds from the exercise of stock options and sales of stock through the Employee Stock Purchase Plan		43				43
Proceeds from the exercise of stock options and sales of stock through the Employee Stock Purchase Plan, shares	9,000					(6,000)
Net tax benefit from stock option exercises and restricted stock vesting		223				223
Stock compensation related to restricted stock vesting and retirement savings plan contributions		2,608				2,608
Stock compensation related to restricted stock vesting and retirement savings plan contributions, shares	109,000
Purchases of treasury stock and buyback of shares for taxes				(1,674)		(1,674)
Purchases of treasury stock and buyback of shares for taxes, shares	(142,000)
Net income					4,123	4,123
Foreign currency translation adjustment			(124)			(124)
Balance at March 31, 2013 at Mar. 31, 2013	$ 39	$ 279,075	$ (430)	$ (64,644)	$ 25,572	$ 239,612
Balance at March 31, 2013, shares at Mar. 31, 2013	30,801,000					30,800,986