CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 90,329	$ 96,670
Short-term investments	80,252	104,506
Accounts receivable	75,052	85,920
Inventories	36,926	64,270
Deferred income taxes	24,650	21,870
Prepaid expenses and other current assets	21,521	23,636
Total current assets	328,730	396,872
Property and equipment, net	34,945	38,122
Goodwill	198,022	212,518
Intangibles, net	31,119	58,447
Other assets	13,268	11,572
Total assets	606,084	717,531
Current liabilities:
Accounts payable	22,380	25,447
Income taxes payable	331	1,797
Deferred revenues	27,020	33,235
Accrued liabilities	35,349	42,415
Total current liabilities	85,080	102,894
Income taxes payable, long-term	15,165	49,309
Other non-current liabilities	11,673	11,915
Total liabilities	111,918	164,118
Commitments and contingencies (Notes 17 and 18)
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; 99,413 and 114,193 shares issued and outstanding at December 31, 2013 and 2012, respectively	99	114
Capital in excess of par value	2,336,275	2,432,790
Accumulated deficit	(1,841,999)	(1,879,026)
Accumulated other comprehensive loss	(209)	(465)
Total stockholders’ equity	494,166	553,413
Total liabilities and stockholders’ equity	$ 606,084	$ 717,531