Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Net income (loss)	$ 21,198us-gaap_NetIncomeLoss	$ (3,991)us-gaap_NetIncomeLoss
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	183	(1,203)
Unrealized gains/losses on investments:
Unrealized holding gains (losses) arising during the period	89	(7)
Net losses reclassified into earnings	(3)	(1)
Net unrealized gains (losses) on investments	86	(8)
Unrealized gains/losses on hedging securities:
Unrealized hedge gains (losses) arising during the period	6,298	(421)
Net unrealized gains/losses on hedging securities	3,740	245
Other comprehensive income (loss)	4,009	(966)
Comprehensive income (loss)	25,207us-gaap_ComprehensiveIncomeNetOfTax	(4,957)us-gaap_ComprehensiveIncomeNetOfTax
Product revenues
Unrealized gains/losses on hedging securities:
Net (gains) losses reclassified into earnings for revenue / expense hedges	(6,636)	2,865
Operating Expenses
Unrealized gains/losses on hedging securities:
Net (gains) losses reclassified into earnings for revenue / expense hedges	$ 4,078	$ (2,199)

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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