Label	Element	Value
Treasury Stock [Member]
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	$ (40,173,000)
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	(26,362,000)
AOCI Attributable to Parent [Member]
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	(4,203,000)
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	(4,695,000)
Additional Paid-in Capital [Member]
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	1,424,540,000
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	$ 1,400,140,000
Common Stock [Member]
Shares, Issued	us-gaap_SharesIssued	105,487,000
Shares, Issued	us-gaap_SharesIssued	105,071,000
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	$ 10,000
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	10,000
Retained Earnings [Member]
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	849,524,000
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	$ 522,974,000