Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Dec. 28, 2014	Mar. 30, 2014
Current assets:
Cash and cash equivalents	$ 95,508	$ 91,258
Marketable securities	192,424	186,783
Accounts receivable, less allowance for doubtful accounts of $1,583 and $1,186 as of December 28, 2014 and March 30, 2014, respectively	94,705	65,213
Inventories	30,939	18,036
Deferred tax assets	15,481	15,080
Other current assets	24,400	16,590
Total current assets	453,457	392,960
Property and equipment, net	74,841	86,527
Goodwill	167,232	167,232
Purchased intangible assets, net	82,091	95,163
Deferred tax assets	32,723	32,827
Other assets	21,157	23,554
Total assets	831,501	798,263
Current liabilities:
Accounts payable	38,804	30,657
Accrued compensation	19,455	26,956
Accrued taxes	3,511	981
Deferred revenue	3,469	3,954
Other current liabilities	5,999	16,123
Total current liabilities	71,238	78,671
Accrued taxes	15,166	17,095
Other liabilities	8,282	9,071
Total liabilities	94,686	104,837
Stockholders' equity:
Preferred stock, $0.001 par value; 1,000,000 shares authorized; no shares issued and outstanding
Common stock, $0.001 par value; 500,000,000 shares authorized; 214,979,000 and 213,786,000 shares issued as of December 28, 2014 and March 30, 2014, respectively	215	214
Additional paid-in capital	974,740	958,008
Retained earnings	1,711,516	1,672,071
Accumulated other comprehensive income (loss)	(520)	435
Treasury stock, at cost: 127,633,000 and 126,616,000 shares as of December 28, 2014 and March 30, 2014, respectively	(1,949,136)	(1,937,302)
Total stockholders' equity	736,815	693,426
Total liabilities and stockholders' equity	$ 831,501	$ 798,263