Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents	$ 435,093	$ 443,132
Short-term investments	184,242	185,783
Trade receivables, net	187,888	169,400
Inventories	89,392	100,328
Deferred taxes		38,805
Prepaid expenses and other current assets	52,852	60,539
Total current assets	949,467	997,987
Property and equipment, net	101,853	109,195
Long-term investments	46,484	59,197
Goodwill	558,775	559,231
Purchased intangibles, net	14,065	24,567
Deferred taxes	89,865	54,019
Other assets	21,738	25,071
Total assets	1,782,247	1,829,267
Current liabilities
Accounts payable	73,472	108,172
Accrued payroll and related liabilities	38,781	42,901
Taxes payable	4,342	4,056
Deferred revenue	170,559	173,532
Current portion of long-term debt	5,717	5,717
Other accrued liabilities	85,095	86,193
Total current liabilities	377,966	420,571
Long-term deferred revenue	86,191	89,366
Taxes payable	9,983	11,719
Deferred taxes	135	173
Long-term debt	228,799	234,516
Other non-current liabilities	25,964	49,189
Total liabilities	$ 729,038	$ 805,534
Commitments and contingencies (Note 12)
Stockholders' equity
Common stock, $0.0005 par value; authorized: 350,000,000 shares; issued and outstanding: 132,665,165 shares at December 31, 2015 and 135,204,948 shares at December 31, 2014	$ 66	$ 68
Additional paid-in capital	1,167,701	1,155,829
Accumulated deficit	(113,355)	(136,275)
Accumulated other comprehensive (loss) income	(1,203)	4,111
Total stockholders' equity	1,053,209	1,023,733
Total liabilities and stockholders' equity	$ 1,782,247	$ 1,829,267