Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	6 Months Ended
Sep. 27, 2015	Sep. 28, 2014	Sep. 27, 2015	Sep. 28, 2014
Income Statement [Abstract]
Net revenues	$ 103,354	$ 127,503	$ 216,759	$ 246,952
Cost of revenues	42,175	52,093	89,242	100,847
Gross profit	61,179	75,410	127,517	146,105
Operating expenses:
Engineering and development	32,255	35,480	67,861	73,301
Sales and marketing	13,624	15,453	29,110	31,487
General and administrative	4,925	8,697	12,001	17,597
Special charges	8,154	2,259	9,233	4,803
Total operating expenses	58,958	61,889	118,205	127,188
Operating income	2,221	13,521	9,312	18,917
Interest and other income, net	153	296	512	438
Income before income taxes	2,374	13,817	9,824	19,355
Income taxes	136	2,807	5,030	2,345
Net income	$ 2,238	$ 11,010	$ 4,794	$ 17,010
Net income per share:
Basic	$ 0.03	$ 0.13	$ 0.06	$ 0.19
Diluted	$ 0.03	$ 0.12	$ 0.05	$ 0.19
Number of shares used in per share calculations:
Basic	86,911	87,914	87,122	87,654
Diluted	87,407	88,102	88,160	88,177

The charge against earnings in the period, comprised of costs incurred associated with an exit or disposal activity pursuant to an authorized plan, charges for the portion of a license payment the Company attributed to the use of the related technology in periods prior to the date of the license agreement, asset impairment charges and other charges. Excludes expenses related to a discontinued operation or an asset retirement obligation. Costs of exit or disposal activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

No definition available.