Stock-Based Compensation (Tables)

6 Months Ended

Sep. 30, 2012

Stock-Based Compensation [Abstract]

Summary of Stock-Based Compensation Expense

	Three Months Ended						Six Months Ended
	September 30, 2012			October 2, 2011			September 30, 2012			October  2, 2011
	(In thousands)
Cost of revenues		$	540		$	593		$	1,310		$	1,334
Engineering and development			3,096			3,296			7,414			7,692
Sales and marketing			1,633			1,701			3,598			3,383
General and administrative			1,776			1,949			4,000			4,320
Total continuing operations			7,045			7,539			16,322			16,729
Discontinued operations			—			481			—			958
		$	7,045		$	8,020		$	16,322		$	17,687