Label	Element	Value
Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation	us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	$ 8,425,000
Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation	us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	11,400,000
Equity, Attributable to Parent	us-gaap_StockholdersEquity	2,067,830,000
Equity, Attributable to Parent	us-gaap_StockholdersEquity	2,100,399,000
Equity, Attributable to Parent	us-gaap_StockholdersEquity	2,089,928,000
Stock Issued During Period, Value, New Issues	us-gaap_StockIssuedDuringPeriodValueNewIssues	171,000
Stock Issued During Period, Value, New Issues	us-gaap_StockIssuedDuringPeriodValueNewIssues	150,000
Net Income (Loss)	us-gaap_NetIncomeLoss	(39,471,000)
Net Income (Loss)	us-gaap_NetIncomeLoss	(9,812,000)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	19,379,000
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	(16,457,000)
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9,158,000
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11,598,000
Treasury Stock, Common [Member]
Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation	us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	8,425,000
Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation	us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	11,400,000
Equity, Attributable to Parent	us-gaap_StockholdersEquity	(243,000)
Equity, Attributable to Parent	us-gaap_StockholdersEquity	(4,692,000)
Equity, Attributable to Parent	us-gaap_StockholdersEquity	(8,006,000)
Stock Issued During Period, Value, New Issues	us-gaap_StockIssuedDuringPeriodValueNewIssues	662,000
Stock Issued During Period, Value, New Issues	us-gaap_StockIssuedDuringPeriodValueNewIssues	6,970,000
Retained Earnings [Member]
Equity, Attributable to Parent	us-gaap_StockholdersEquity	827,689,000
Equity, Attributable to Parent	us-gaap_StockholdersEquity	837,501,000
Equity, Attributable to Parent	us-gaap_StockholdersEquity	768,375,000
Net Income (Loss)	us-gaap_NetIncomeLoss	(9,812,000)
Net Income (Loss)	us-gaap_NetIncomeLoss	(39,471,000)
AOCI Attributable to Parent [Member]
Equity, Attributable to Parent	us-gaap_StockholdersEquity	(61,603,000)
Equity, Attributable to Parent	us-gaap_StockholdersEquity	(80,978,000)
Equity, Attributable to Parent	us-gaap_StockholdersEquity	(69,538,000)
Other Comprehensive Income (Loss), Net of Tax	us-gaap_OtherComprehensiveIncomeLossNetOfTax	19,375,000
Other Comprehensive Income (Loss), Net of Tax	us-gaap_OtherComprehensiveIncomeLossNetOfTax	(16,457,000)
Additional Paid-in Capital [Member]
Equity, Attributable to Parent	us-gaap_StockholdersEquity	1,339,908,000
Equity, Attributable to Parent	us-gaap_StockholdersEquity	1,331,249,000
Equity, Attributable to Parent	us-gaap_StockholdersEquity	1,371,244,000
Stock Issued During Period, Value, New Issues	us-gaap_StockIssuedDuringPeriodValueNewIssues	(6,847,000)
Stock Issued During Period, Value, New Issues	us-gaap_StockIssuedDuringPeriodValueNewIssues	(503,000)
Adjustments to Additional Paid in Capital, Other	us-gaap_AdjustmentsToAdditionalPaidInCapitalOther	0
Adjustments to Additional Paid in Capital, Other	us-gaap_AdjustmentsToAdditionalPaidInCapitalOther	4,000
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11,598,000
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	$ 9,158,000
Common Stock Shares [Member]
Common Stock, Shares, Issued	us-gaap_CommonStockSharesIssued	24,412,000
Common Stock, Shares, Issued	us-gaap_CommonStockSharesIssued	23,995,000
Common Stock, Shares, Issued	us-gaap_CommonStockSharesIssued	24,114,000
Stock Issued During Period, Shares, New Issues	us-gaap_StockIssuedDuringPeriodSharesNewIssues	172,000
Stock Issued During Period, Shares, New Issues	us-gaap_StockIssuedDuringPeriodSharesNewIssues	378,000
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation	53,000
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation	110,000
Common Stock [Member]
Equity, Attributable to Parent	us-gaap_StockholdersEquity	$ 2,411,000
Equity, Attributable to Parent	us-gaap_StockholdersEquity	2,441,000
Equity, Attributable to Parent	us-gaap_StockholdersEquity	2,399,000
Stock Issued During Period, Value, New Issues	us-gaap_StockIssuedDuringPeriodValueNewIssues	27,000
Stock Issued During Period, Value, New Issues	us-gaap_StockIssuedDuringPeriodValueNewIssues	$ 12,000