CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 96,670	$ 90,983
Short-term investments	104,506	70,854
Accounts receivable	85,920	109,886
Inventories	64,270	70,649
Deferred income taxes	21,870	28,032
Prepaid expenses and other current assets	23,636	21,474
Total current assets	396,872	391,878
Property and equipment, net	38,122	40,469
Goodwill	212,518	212,417
Intangibles, net	58,447	87,651
Other assets	11,572	1,751
Total assets	717,531	734,166
Current liabilities:
Accounts payable	25,447	30,537
Income taxes payable	1,797	2,290
Deferred revenues	33,235	33,095
Accrued liabilities	42,415	46,896
Total current liabilities	102,894	112,818
Income taxes payable, long-term	49,309	47,307
Deferred income taxes, long-term		655
Other non-current liabilities	11,915	9,070
Total liabilities	164,118	169,850
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; 114,193 and 116,257 shares issued and outstanding at December 31, 2012 and 2011	114	116
Capital in excess of par value	2,432,790	2,433,164
Accumulated deficit	(1,879,026)	(1,868,089)
Accumulated other comprehensive loss	(465)	(875)
Total stockholders' equity	553,413	564,316
Total liabilities and stockholders' equity	$ 717,531	$ 734,166