CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 4,386us-gaap_NetIncomeLoss	$ (10,474)us-gaap_NetIncomeLoss
Other comprehensive loss, net of tax:
Foreign currency translation adjustment	(8,122)	151
Unrealized change in available-for-sale and non-marketable securities (net of $0 tax for the three months ended March 31, 2015 and 2014)	224	1,319
Unrealized change in cash flow hedges (net of $0 tax for the three months ended March 31, 2015 and 2014)	1,788	297
Net change in other comprehensive (loss) income, net of tax	(6,110)	1,767
Comprehensive loss	$ (1,724)us-gaap_ComprehensiveIncomeNetOfTax	$ (8,707)us-gaap_ComprehensiveIncomeNetOfTax

Net of tax amount of unrealized holding gain (loss) on available-for-sale securities and non-marketable investments.

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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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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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