Consolidated Statement of Equity Statement - USD ($) $ in Thousands	Total	Additional Paid-in Capital [Member]	Common Stock [Member]	Treasury Stock [Member]
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		(1)	$ 1
Net Income (Loss) Attributable to Parent	2,083
Proceeds from Sale of Treasury Stock	$ 0
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)
Common Stock, Shares, Issued	52,140,000
Common Stock, Value, Issued	$ 521
Additional Paid in Capital	$ 732,958
Treasury Stock, Shares	3,842,000
Treasury Stock, Value	$ (32,901)
Total Equity	417,751
Retained Earnings (Accumulated Deficit)	(282,827)
Net Income (Loss) Attributable to Parent	(46,652)
Stock-based compensation expense	1,521	1,521
Shares repurchased for tax withholdings for vested stock awards				179,000
CostOfRepurchasedSharesForTaxWittholdingForShareBasedCompensation	(342)			$ (342)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures			514,000
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	0	(5)	$ 5
Net Income (Loss) Attributable to Parent	$ (87,426)
Shares repurchased for tax withholdings for vested stock awards	414,174
Proceeds from Sale of Treasury Stock	$ 10,869
Common Stock, Shares, Issued	52,654,000
Common Stock, Value, Issued	$ 526
Additional Paid in Capital	$ 734,474
Treasury Stock, Shares	4,021,000
Treasury Stock, Value	$ (33,243)
Total Equity	372,278
Retained Earnings (Accumulated Deficit)	(329,479)
Net Income (Loss) Attributable to Parent	7,515
Stock-based compensation expense	1,180	1,180
Shares repurchased for tax withholdings for vested stock awards				231,000
CostOfRepurchasedSharesForTaxWittholdingForShareBasedCompensation	(539)			$ (539)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures			662,000
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	$ 0	$ (7)	$ 7
Common Stock, Shares, Issued	53,316,000
Common Stock, Value, Issued	$ 533
Additional Paid in Capital	$ 735,647
Treasury Stock, Shares	4,252,000
Treasury Stock, Value	$ (33,782)
Total Equity	380,434
Retained Earnings (Accumulated Deficit)	(321,964)
Net Income (Loss) Attributable to Parent	(48,289)
Stock-based compensation expense	$ 1,156
Shares repurchased for tax withholdings for vested stock awards	4,000
CostOfRepurchasedSharesForTaxWittholdingForShareBasedCompensation	$ (13)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	11,000
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	$ 0
Adjustments to Additional Paid in Capital, Other	(3,784)
Stock Issued During Period, Value, Treasury Stock Reissued	$ (14,653)
Stock Issued During Period, Shares, Treasury Stock Reissued	(2,307,692)
Common Stock, Shares, Issued	53,327,000
Common Stock, Value, Issued	$ 533
Additional Paid in Capital	$ 733,019
Treasury Stock, Shares	1,948,000
Treasury Stock, Value	$ (19,142)
Total Equity	344,157
Retained Earnings (Accumulated Deficit)	$ (370,253)