CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jan. 01, 2012	Jan. 02, 2011	Jan. 01, 2012	Jan. 02, 2011
Consolidated Statement of Operations
Revenues	$ 119,977	$ 147,524	$ 407,580	$ 460,715
Cost of revenues	56,093	67,177	190,627	213,222
Gross profit	63,884	80,347	216,953	247,493
Operating expenses:
Research and development	38,410	40,674	117,409	116,774
Selling, general and administrative	23,661	26,017	74,478	77,732
Total operating expenses	62,071	66,691	191,887	194,506
Operating income	1,813	13,656	25,066	52,987
Other-than temporary impairment loss on investments	(2,130)	0	(2,130)	0
Interest income and other, net	(10)	1,352	(1,794)	2,793
Income (loss) from continuing operations before income taxes	(327)	15,008	21,142	55,780
Provision for income taxes	576	111	1,176	1,659
Net income (loss) from continuing operations	(903)	14,897	19,966	54,121
Discontinued operations:
Gain from divestiture	0	0	45,939	0
Loss from discontinued operations before income taxes	(5,290)	(5,124)	(20,286)	(15,404)
Benefit from income taxes	0	(21)	(89)	(64)
Net income (loss) from discontinued operations	(5,290)	(5,103)	25,742	(15,340)
Net income (loss)	$ (6,193)	$ 9,794	$ 45,708	$ 38,781
Basic net income (loss) per share - continuing operations (in dollars per share)	$ (0.01)	$ 0.10	$ 0.14	$ 0.35
Basic net income (loss) per share - discontinued operations (in dollars per share)	$ (0.03)	$ (0.04)	$ 0.18	$ (0.10)
Basic net income (loss) per share (in dollars per share)	$ (0.04)	$ 0.06	$ 0.32	$ 0.25
Diluted net income (loss) per share - continuing operations (in dollars per share)	$ (0.01)	$ 0.10	$ 0.14	$ 0.35
Diluted net income (loss) per share - discontinued operations (in dollars per share)	$ (0.03)	$ (0.04)	$ 0.17	$ (0.10)
Diluted net income (loss) per share (in dollars per share)	$ (0.04)	$ 0.06	$ 0.31	$ 0.25
Weighted average shares:
Basic (in shares)	141,839	151,421	144,792	154,487
Diluted (in shares)	141,839	152,975	146,706	155,525