Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 712,694	$ 477,073
Short-term investments	161,339	197,196
Trade receivables, net of allowance for doubtful accounts of $2,722 and $2,921 at September 30, 2013 and December 31, 2012, respectively	175,223	194,654
Inventories	107,681	99,960
Deferred taxes	48,562	48,916
Prepaid expenses and other current assets	66,861	52,539
Total current assets	1,272,360	1,070,338
Property and equipment, net	122,379	133,319
Long-term investments	79,776	50,333
Goodwill	559,463	553,819
Purchased intangibles, net	45,948	54,983
Deferred taxes	26,702	28,406
Other assets	28,864	21,238
Total assets	2,135,492	1,912,436
Current liabilities
Accounts payable	91,136	89,983
Accrued payroll and related liabilities	33,878	39,469
Taxes payable	4,880	4,736
Deferred revenue	172,056	158,482
Current portion of long term debt	6,250
Other accrued liabilities	71,592	63,018
Total current liabilities	379,792	355,688
Non-current liabilities
Long term deferred revenue	88,112	91,061
Taxes payable	14,926	15,598
Deferred taxes	229	236
Long term debt	243,750
Other non-current liabilities	34,381	22,079
Total non-current liabilities	381,398	128,974
Total liabilities	761,190	484,662
Stockholders’ equity
Common stock, $0.0005 par value; Authorized: 350,000,000 shares; Issued and outstanding: 170,417,372 shares at September 30, 2013 and 175,323,885 shares at December 31, 2012	34	38
Additional paid-in capital	1,334,501	1,326,436
Retained earnings	35,479	97,104
Accumulated other comprehensive income	4,288	4,196
Total stockholders’ equity	1,374,302	1,427,774
Total liabilities and stockholders’ equity	$ 2,135,492	$ 1,912,436