Statement of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]
Shares, Issued		32,953
Stockholders' Equity Attributable to Parent	$ 279,003	$ 33	$ 415,739	$ (1,795)	$ (134,974)
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures		493
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	362	$ 0	362	0	0
Stock Repurchased During Period, Shares		(1,353)
Stock Repurchased During Period, Value		$ (1)	(12,844)
Payments for Repurchase of Common Stock	(12,845)
Net Income (Loss) Attributable to Parent	(4,640)				(4,640)
Stock Issued During Period, Value, New Issues	6,242		6,242
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	63		63
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	(1,040)			(1,040)
Unrealized Gain (Loss) on Investments	183			183
Shares, Issued		32,093
Stockholders' Equity Attributable to Parent	267,328	$ 32	409,562	(2,652)	(139,614)
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures		530
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	330	$ 0	330	0	0
Stock Repurchased During Period, Shares		(1,674)
Stock Repurchased During Period, Value		$ (1)	(20,667)
Payments for Repurchase of Common Stock	(20,668)
Net Income (Loss) Attributable to Parent	17,956				17,956
Stock Issued During Period, Value, New Issues	7,603		7,603
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	16		16
Shares withheld for taxes for share based compensation	(1,916)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	62			62
Unrealized Gain (Loss) on Investments	(33)			(33)
Shares, Issued		30,949
Stockholders' Equity Attributable to Parent	270,678	$ 31	394,928	(2,623)	(121,658)
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures		713
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	850	$ 0	850	0	0
Stock Repurchased During Period, Shares		(615)
Stock Repurchased During Period, Value		$ 0	(8,044)
Payments for Repurchase of Common Stock	(8,044)
Net Income (Loss) Attributable to Parent	36,952				36,952
Stock Issued During Period, Value, New Issues	4,775		4,775
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	792		792
Shares withheld for taxes for share based compensation	$ (1,587)
Redemption of stock warrants	4,248	80
Stock Issued During Period, Value, Conversion of Convertible Securities	$ (10,525)
Stock and Warrants Issued During Period, Value, Preferred Stock and Warrants	(10,525)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	(119)			(119)
Unrealized Gain (Loss) on Investments	(37)			(37)
Shares, Issued		31,127
Stockholders' Equity Attributable to Parent	$ 293,735	$ 31	$ 381,189	$ (2,779)	$ (84,706)