Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Condensed Consolidated Statements of Operations [Abstract]
Revenue, net	$ 49,239	$ 26,346
Cost of revenue	18,780	10,828
Gross profit	30,459	15,518
Operating expenses:
Selling, general and administrative	16,488	12,716
Research and development	22,142	20,007
Total operating expenses	38,630	32,723
Loss from operations	(8,171)	(17,205)
Other income (expense):
Foreign exchange (loss) gain	(1,879)	1,085
Interest expense	(2,976)	(2,777)
Investment income, net	41	112
Other, net	26	(60)
Loss before income taxes	(12,959)	(18,845)
Provision for income taxes
Net loss	$ (12,959)	$ (18,845)
Net loss per common share - basic and diluted	$ (0.87)	$ (1.33)
Weighted average shares outstanding - basic and diluted	14,860	14,121