Condensed Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013
Income Statement [Abstract]
Net revenues	$ 127,503	$ 112,622	$ 246,952	$ 225,738
Cost of revenues	52,093	36,313	100,847	72,932
Gross profit	75,410	76,309	146,105	152,806
Operating expenses:
Engineering and development	35,480	34,790	73,301	75,177
Sales and marketing	15,453	16,431	31,487	35,844
General and administrative	8,697	7,553	17,597	15,292
Special charges	2,259	4,349	4,803	16,382
Total operating expenses	61,889	63,123	127,188	142,695
Operating income	13,521	13,186	18,917	10,111
Interest and other income, net	296	25	438	798
Income before income taxes	13,817	13,211	19,355	10,909
Income taxes	2,807	2,234	2,345	2,982
Net income	$ 11,010	$ 10,977	$ 17,010	$ 7,927
Net income per share:
Basic	$ 0.13	$ 0.13	$ 0.19	$ 0.09
Diluted	$ 0.12	$ 0.13	$ 0.19	$ 0.09
Number of shares used in per share calculations:
Basic	87,914	87,430	87,654	88,288
Diluted	88,102	87,669	88,177	88,720

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan, asset impairment charges and other charges. Costs of exit or disposal activities includes, but is not limited to, 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.

No definition available.