Consolidated Statement of Equity Statement - USD ($) $ in Thousands	Total	Additional Paid-in Capital [Member]	Common Stock [Member]	Treasury Stock [Member]
Common Stock, Shares, Issued	50,032,000
Common Stock, Value, Issued	$ 501
Additional Paid in Capital	$ 717,323
Treasury Stock, Shares	3,115,000
Treasury Stock, Value	$ (29,658)
Total Equity	467,963
Retained Earnings (Accumulated Deficit)	(220,203)
Net Income (Loss) Attributable to Parent	(38,622)
Stock-based compensation expense	2,341	$ 2,341
Net Income (Loss) Attributable to Parent	$ 21,844
Common Stock, Shares, Issued	50,032,000
Common Stock, Value, Issued	$ 501
Additional Paid in Capital	$ 719,664
Treasury Stock, Shares	3,115,000
Treasury Stock, Value	$ (29,658)
Total Equity	431,682
Retained Earnings (Accumulated Deficit)	(258,825)
Net Income (Loss) Attributable to Parent	59,697
Stock-based compensation expense	2,632	2,632
Shares repurchased for tax withholdings for vested stock awards				350,000
CostOfRepurchasedSharesForTaxWittholdingForShareBasedCompensation	(1,971)			$ (1,971)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures			994,000
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	$ 0	(10)	$ 10
Common Stock, Shares, Issued	51,026,000
Common Stock, Value, Issued	$ 511
Additional Paid in Capital	$ 722,286
Treasury Stock, Shares	3,465,000
Treasury Stock, Value	$ (31,629)
Total Equity	492,040
Retained Earnings (Accumulated Deficit)	(199,128)
Net Income (Loss) Attributable to Parent	769
Stock-based compensation expense	$ 1,878	1,878
Common Stock, Shares, Issued	51,026,000
Common Stock, Value, Issued	$ 511
Additional Paid in Capital	$ 724,164
Treasury Stock, Shares	3,465,000
Treasury Stock, Value	$ (31,629)
Total Equity	494,687
Retained Earnings (Accumulated Deficit)	$ (198,359)
Common Stock, Shares, Issued	51,030,000
Common Stock, Value, Issued	$ 510
Additional Paid in Capital	$ 726,331
Treasury Stock, Shares	3,467,000
Treasury Stock, Value	$ (31,636)
Total Equity	450,628
Retained Earnings (Accumulated Deficit)	(244,577)
Net Income (Loss) Attributable to Parent	(32,155)
Stock-based compensation expense	2,321	2,321
Shares repurchased for tax withholdings for vested stock awards				12,000
CostOfRepurchasedSharesForTaxWittholdingForShareBasedCompensation	(40)			$ (40)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures			56,000
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	0	(1)	$ 1
Net Income (Loss) Attributable to Parent	$ 2,083
Shares repurchased for tax withholdings for vested stock awards	374,733
Common Stock, Shares, Issued	51,086,000
Common Stock, Value, Issued	$ 511
Additional Paid in Capital	$ 728,651
Treasury Stock, Shares	3,479,000
Treasury Stock, Value	$ (31,676)
Total Equity	420,754
Retained Earnings (Accumulated Deficit)	(276,732)
Net Income (Loss) Attributable to Parent	35,931
Stock-based compensation expense	1,860	1,860
Shares repurchased for tax withholdings for vested stock awards				363,000
CostOfRepurchasedSharesForTaxWittholdingForShareBasedCompensation	(1,225)			$ (1,225)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures			1,053,000
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	$ 0	(10)	$ 10
Common Stock, Shares, Issued	52,139,000
Common Stock, Value, Issued	$ 521
Additional Paid in Capital	$ 730,501
Treasury Stock, Shares	3,842,000
Treasury Stock, Value	$ (32,901)
Total Equity	457,320
Retained Earnings (Accumulated Deficit)	(240,801)
Net Income (Loss) Attributable to Parent	(1,693)
Stock-based compensation expense	$ 1,819	$ 1,819
Common Stock, Shares, Issued	52,139,000
Common Stock, Value, Issued	$ 521
Additional Paid in Capital	$ 732,320
Treasury Stock, Shares	3,842,000
Treasury Stock, Value	$ (32,901)
Total Equity	457,446
Retained Earnings (Accumulated Deficit)	$ (242,494)