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							35,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' Equity Attributable to Parent		$ 2,335,507	$ 617	$ 2,384,309		$ (47,945)	$ (1,474)
Shares, Outstanding			61,652,000
Weighted Average Number of Shares Outstanding, Basic	94,077,000
Issuance of treasury shares			0		69,000
Purchase of treasury shares		(7,693)			$ (7,693)
Issuance of treasury shares		0	$ 0	0	0
Net income (loss)	$ (465,015)	(465,015)				(465,015)
Stock Issued During Period, Shares, Acquisitions			39,182,000
Stock Issued During Period, Value, Acquisitions		1,015,312	$ (391)	1,014,921
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture			121,000				0
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture		5,672	$ 1	3,713			$ 1,958
Treasury Stock, Shares, Retired			(251,000)				251,000
Treasury Stock, Retired, Cost Method, Amount			$ (3)	6,425	$ (6,428)
Stock Repurchased and Retired During Period, Shares			(1,266,000)		1,266,000
Stock Repurchased During Period, Value		(23,819)			$ (23,819)
Stock Repurchased and Retired During Period, Value			$ (12)	(23,807)	$ 23,819
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation					(306,000)
Stock Repurchased During Period, Shares					(1,266,000)
Shares, Issued							(21,000)
Stockholders' Equity Attributable to Parent		2,859,964	$ 994	3,372,711		(512,960)	$ (781)
Shares, Outstanding			99,438,000
Shares, Issued							38,000
Stockholders' Equity Attributable to Parent	$ 2,615,538	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			0		65,000
Purchase of treasury shares		(2,356)			$ (2,356)
Issuance of treasury shares		0	$ 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	$ 2,587,068	$ 994	$ 3,369,272		$ (781,301)	$ (1,897)
Shares, Outstanding			99,367,000