Consolidated Statement of Equity (Statement) - USD ($) $ in Thousands	Total	Parent [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock, Common [Member]	Retained Earnings [Member]	Treasury Stock [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Shares, Issued							(38,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' Equity Attributable to Parent		$ 2,615,538	$ 998	$ 3,387,754		$ (772,265)	$ (949)
Shares, Outstanding			99,759,000
Weighted Average Number of Shares Outstanding, Basic	99,702,000
Issuance of treasury shares					65,000
Purchase of treasury shares		(2,356)			$ (2,356)
Issuance of treasury shares		0		0	0
Net income (loss)	$ (9,036)	(9,036)				(9,036)
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture			209,000				0
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture		5,020	$ 2	3,670			$ 1,348
Treasury Stock, Shares, Retired			(33,000)				33,000
Treasury Stock, Retired, Cost Method, Amount			$ 0	(1,091)	$ 1,091
Stock Repurchased and Retired During Period, Shares			(568,000)		568,000
Stock Repurchased During Period, Value		(22,098)			$ (22,098)
Stock Repurchased and Retired During Period, Value			$ (6)	(21,061)	$ 21,067
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation					(81,000)
Stock Repurchased During Period, Shares					(598,000)
Shares, Issued							(51,000)
Stockholders' Equity Attributable to Parent		2,587,068	$ 994	3,369,272		(781,301)	$ (1,897)
Shares, Outstanding			99,367,000
Shares, Issued							(55,000)
Stockholders' Equity Attributable to Parent	$ 2,910,247	2,910,247	$ 965	3,161,941		(249,954)	$ (2,705)
Shares, Outstanding			96,468,000
Weighted Average Number of Shares Outstanding, Basic	96,279,000
Issuance of treasury shares					67,000
Purchase of treasury shares		(9,203)			$ (9,203)
Issuance of treasury shares		0		0	0
Net income (loss)	$ (31,960)	(31,960)				(31,960)
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture			655,000				0
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture		5,474	$ 7	1,798			$ 3,669
Treasury Stock, Shares, Retired			(53,000)				53,000
Treasury Stock, Retired, Cost Method, Amount			$ (2)	(3,022)	$ 3,024
Stock Repurchased and Retired During Period, Shares			(1,320,000)		1,320,000
Stock Repurchased During Period, Value		(85,339)			$ (85,339)
Stock Repurchased and Retired During Period, Value			$ (13)	(83,508)	$ 83,521
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation					(164,000)
Stock Repurchased During Period, Shares					(1,326,000)
Dividends, Common Stock	(24,500)	(24,468)		(24,468)
Shares, Issued							(105,000)
Stockholders' Equity Attributable to Parent	$ 2,764,751	$ 2,764,751	$ 957	$ 3,052,741		$ (281,914)	$ (7,033)
Shares, Outstanding			95,750,000