Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 90,983	$ 96,533
Short-term investments	70,854	23,838
Accounts receivable, net	109,886	101,652
Inventories	70,649	58,065
Deferred income taxes	28,032	39,849
Prepaid expenses and other current assets	21,474	28,614
Total current assets	391,878	348,551
Property and equipment, net	40,469	39,825
Goodwill	212,417	211,878
Intangibles, net	87,651	118,070
Other assets	1,751	2,062
Total assets	734,166	720,386
Current liabilities:
Accounts payable	30,537	26,300
Income taxes payable	2,290	6,791
Deferred revenue	33,095	46,279
Accrued liabilities	46,896	51,283
Total current liabilities	112,818	130,653
Income taxes payable, long-term	47,307	48,883
Deferred income taxes, long-term	655	14,849
Other non-current liabilities	9,070	5,798
Total liabilities	169,850	200,183
Commitments and contingencies (Notes 18 and 19)
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; 116,257 and 112,360 shares issued and outstanding at December 30, 2011 and 2010, respectively	116	112
Capital in excess of par value	2,433,164	2,397,671
Accumulated deficit	(1,868,089)	(1,876,868)
Accumulated other comprehensive loss	(875)	(712)
Total stockholders' equity	564,316	520,203
Total liabilities and stockholders' equity	$ 734,166	$ 720,386