Label	Element	Value
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	$ 4,930,000
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3,744,000
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation	(1,006,000)
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation	(861,000)
Stock Repurchased During Period, Value	us-gaap_StockRepurchasedDuringPeriodValue	$ 11,028,000
Common Stock [Member]
Stock Repurchased During Period, Shares	us-gaap_StockRepurchasedDuringPeriodShares	3,107,370
Common Stock, Shares, Outstanding	us-gaap_CommonStockSharesOutstanding	96,213,243
Common Stock, Shares, Outstanding	us-gaap_CommonStockSharesOutstanding	89,061,768
Common Stock, Shares, Outstanding	us-gaap_CommonStockSharesOutstanding	93,586,995
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	$ 9,000
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	10,000
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	$ 10,000
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture	us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation	622,680
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture	us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation	481,122
Additional Paid-in Capital [Member]
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	$ 4,930,000
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3,744,000
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	723,623,000
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	713,714,000
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	715,478,000
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation	(861,000)
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation	(1,006,000)
Stock Repurchased During Period, Value	us-gaap_StockRepurchasedDuringPeriodValue	11,028,000
Retained Earnings [Member]
Net Income (Loss) Attributable to Parent	us-gaap_NetIncomeLoss	(12,414,000)
Net Income (Loss) Attributable to Parent	us-gaap_NetIncomeLoss	(19,565,000)
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	(393,847,000)
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	(532,097,000)
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	$ (406,261,000)