Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net income	$ 3,335	$ 21,198
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	1,064	183
Unrealized gains/losses on investments:
Unrealized holding gains arising during the period	226	89
Net gains (losses) reclassified into earnings	7	(3)
Net unrealized gains on investments	233	86
Unrealized gains/losses on hedging securities:
Unrealized hedge (losses) gains arising during the period	(1,627)	6,298
Net unrealized (losses)/gains on hedging securities	(1,568)	3,740
Other comprehensive (loss) income	(271)	4,009
Comprehensive income	3,064	25,207
Product revenues
Unrealized gains/losses on hedging securities:
Net (gains) losses reclassified into earnings for revenue/expense hedges	(1,298)	(6,636)
Operating Expenses
Unrealized gains/losses on hedging securities:
Net (gains) losses reclassified into earnings for revenue/expense hedges	$ 1,357	$ 4,078