Condensed Consolidated Statement of Stockholders' Equity - 3 months ended Mar. 31, 2016 - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Retained Earnings (Deficit) [Member]	Total
Balance at Dec. 31, 2015	$ 45	$ 364,786	$ (1,875)	$ (103,197)	$ 89,051	$ 348,810
Balance (in shares) at Dec. 31, 2015	34,394,000					34,394,412
Proceeds from the sales of stock through the Employee Stock Purchase Plan		53				$ 53
Proceeds from the sales of stock through the Employee Stock Purchase Plan, shares	3,000
Stock compensation related to restricted stock vesting and retirement savings plan contributions		3,523				3,523
Stock compensation related to restricted stock vesting and retirement savings plan contributions (in shares)	330,000
Purchases of treasury stock and buyback of shares for taxes				(2,351)		(2,351)
Purchases of treasury stock and buyback of shares for taxes (in shares)	(121,000)
Net income					5,406	5,406
Foreign currency translation adjustment			192			192
Balance at Mar. 31, 2016	$ 45	$ 368,362	$ (1,683)	$ (105,548)	$ 94,457	$ 355,633
Balance (in shares) at Mar. 31, 2016	34,606,000					34,605,750