Income Taxes Schedule of Income Tax Rate Reconciliation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
US Federal Effective Tax Rate	35.00%
Income (loss) before income taxes
Domestic	$ 167,299	$ 125,010	$ 173,032
Foreign	(31,080)	(626,776)	(48,587)
Income (loss) before income taxes	136,219	(501,766)	124,445
Expected federal income tax provision (benefit)	47,677	(175,618)	43,556
Goodwill impairment		207,054	0
Goodwill impairment	(1,905)
Change in valuation allowance	88	8,518	3,195
Stock-based compensation	1,787	951	1,541
Foreign earnings	(23,769)	(19,222)	(14,986)
Tax credits	(2,174)	(6,877)	(9,746)
Uncertain tax positions, including interest and penalties	(2,740)	(3,996)	(10,242)
Change in tax rates	174	(1,522)	(1,428)
State income tax provision (benefit), net of federal effect	1,242	(768)	1,968
U.S. tax provision on foreign earnings	2,370	0	279
Domestic production activities deduction	(2,612)	(4,313)	(886)
Local foreign taxes	3,635	3,525	4,140
Other, net	2,222	(3,302)	(1,417)
Total provision for income taxes	$ 25,995	$ 4,430	$ 15,974

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to the application of appropriate local tax rates in foreign jurisdictions.