Income Taxes Schedule of Income Tax Rate Reconciliation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Income (loss) before income taxes
Domestic	$ 92,933		$ 19,016		$ 167,299
Foreign	(107,842)		(167,270)		(31,080)
Income (loss) before income taxes	(14,909)		(148,254)		136,219
Expected federal income tax provision (benefit)	(5,218)		(51,889)		47,677
Goodwill impairment	119		49,730		(1,905)
Change in valuation allowance	100,651		17,999		12,855
Stock-based compensation	1,255		1,598		1,787
Foreign earnings (1)	(30,417)	[1]	(15,655)	[1]	(36,536)	[1]
Tax credits	(91,148)		(10,352)		(2,174)
Uncertain tax positions, including interest and penalties	974		1,360		(2,740)
Change in tax rates	(20)		1,442		174
State income tax provision (benefit), net of federal effect	(984)		(2,291)		1,242
U.S. tax provision on foreign earnings	31,309		(245)		2,370
Domestic production activities deduction	(2,312)		(146)		(2,612)
Local foreign taxes	2,295		3,212		3,635
Other, net	137		1,573		2,222
Total provision (benefit) for income taxes	$ 6,641		$ (3,664)		$ 25,995

[1] (1) Foreign earnings for all jurisdictions are classified as a single reconciling item to be consistent with the current year presentation.