Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Net revenues	$ 54,148	$ 41,294
Cost of revenues	22,342	18,355
Gross profit	31,806	22,939
Operating expenses:
Research and development	34,506	34,771
Selling, general and administrative	9,526	12,470
Gain on sale of TPack	(19,699)	0
Amortization of purchased intangible assets	130	650
Restructuring charges, net	93	0
Total operating expenses	24,556	47,891
Operating income (loss)	7,250	(24,952)
Interest income (expense), net	3,666	1,679
Other income (expense), net	129	83
Income (loss) before income taxes	11,045	(23,190)
Income tax expense	188	200
Net income (loss)	$ 10,857	$ (23,390)
Basic net income (loss) per share (in dollars per share)	$ 0.16	$ (0.37)
Shares used in calculating basic income (loss) per share	69,360	62,409
Diluted net income (loss) per share (in dollars per share)	$ 0.15	$ (0.37)
Shares used in calculating diluted income (loss) per share	70,234	62,409