CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 28, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 69,192	$ 90,329
Short-term investments	78,547	80,252
Accounts receivable, net	77,515	75,052
Inventories	30,304	36,926
Deferred income taxes	25,831	24,650
Prepaid expenses and other current assets	28,216	21,521
Total current assets	309,605	328,730
Property and equipment, net	34,103	34,945
Goodwill	198,036	198,022
Intangibles, net	24,453	31,119
Other assets	8,552	13,268
Total assets	574,749	606,084
Current liabilities:
Accounts payable	19,847	22,380
Income taxes payable	98	331
Deferred revenue	33,528	27,020
Accrued liabilities	31,848	35,349
Total current liabilities	85,321	85,080
Income taxes payable, long-term	15,353	15,165
Other non-current liabilities	11,594	11,673
Total liabilities	112,268	111,918
Commitments and contingencies (Note 14)
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.001 par value, 150,000 shares authorized; 95,735 and 99,413 shares issued and outstanding at March 28, 2014 and December 31, 2013, respectively	96	99
Additional paid-in capital	2,309,955	2,336,275
Accumulated deficit	(1,847,409)	(1,841,999)
Accumulated other comprehensive loss	(161)	(209)
Total stockholders’ equity	462,481	494,166
Total liabilities and stockholders’ equity	$ 574,749	$ 606,084