CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 28, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 83,203	$ 96,670
Short-term investments	78,478	104,506
Accounts receivable, net	86,248	85,920
Inventories	44,381	64,270
Deferred income taxes	20,145	21,870
Prepaid expenses and other current assets	19,727	23,636
Total current assets	332,182	396,872
Property and equipment, net	37,436	38,122
Goodwill	197,857	212,518
Intangibles, net	44,642	58,447
Other assets	14,873	11,572
Total assets	626,990	717,531
Current liabilities:
Accounts payable	22,850	25,447
Income taxes payable	496	1,797
Deferred revenue	32,976	33,235
Accrued liabilities	38,931	42,415
Total current liabilities	95,253	102,894
Income taxes payable, long-term	50,546	49,309
Other non-current liabilities	11,675	11,915
Total liabilities	157,474	164,118
Commitments and contingencies (Note 14)
Stockholders' equity:
Preferred stock, $0.001 par value, 5,000 shares authorized; no shares issued or outstanding
Common stock, $0.001 par value, 150,000 shares authorized; 100,920 and 114,193 shares issued and outstanding at June 28, 2013 and December 31, 2012, respectively	101	114
Additional paid-in capital	2,346,784	2,432,790
Accumulated deficit	(1,876,405)	(1,879,026)
Accumulated other comprehensive loss	(964)	(465)
Total stockholders' equity	469,516	553,413
Total liabilities and stockholders' equity	$ 626,990	$ 717,531