Schedule of Effective Income Tax Reconciliation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Income Tax Disclosure [Abstract]
Federal tax computed at the statutory rate	$ (184,075)		$ 51,419
State taxes, net of federal benefit	(5,970)		5,255
Change in valuation allowance	19,515		(22,730)
Impairment of goodwill and other long-lived assets	103,563		0
Acquisition costs	4,945		0
Changes related to uncertain tax positions	(14,176)		0
Federal and State tax credits	6,817		2,627
Domestic production activities deduction	2,493		(2,493)
Foreign income tax rate differential adjusted for U.S. taxation of foreign profits (1)	15,716	[1]	(1,735)	[1]
Deferred charges	11,341		0
Other items, net	(610)		1,487
Total tax provision	$ (54,075)		$ 28,576		$ 0

[1] The “U.S. Taxation of foreign profits” represents the U.S. tax net of foreign tax credits associated with actual and deemed repatriations of earnings from the Company's non-U.S. subsidiaries.