Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
CURRENT ASSETS:
Cash and cash equivalents	$ 418,500	$ 240,031
Marketable securities	150,117	209,426
Accounts receivable, net of allowances of $2,249 and $3,094, respectively	160,230	96,982
Inventories	109,921	78,006
Deferred tax assets	20,197	12,252
Prepaid expenses and other current assets	62,135	42,782
Total current assets	921,100	679,479
Property and equipment, net	75,248	71,558
Investments	36,636	36,636
Deferred tax assets	19,047	11,510
Other assets	20,861	11,840
TOTAL ASSETS	1,072,892	811,023
CURRENT LIABILITIES:
Accounts payable	31,487	32,428
Accrued liabilities	58,979	40,369
Deferred revenue	124,740	60,327
Other current liabilities	9,760	11,249
Total current liabilities	224,966	144,373
Income taxes payable	11,188	17,323
Lease financing obligations, non-current	41,587	42,547
Deferred revenue, non-current	65,966	46,141
Other long-term liabilities	6,011	4,981
TOTAL LIABILITIES	$ 349,718	$ 255,365
Commitments and contingencies
STOCKHOLDERS’ EQUITY:
Preferred stock, $0.0001 par value—100,000 shares authorized, no shares issued and outstanding as of September 30, 2015 and December 31, 2014	$ 0	$ 0
Common stock, $0.0001 par value—1,000,000 shares authorized as of September 30, 2015 and December 31, 2014; 67,731 and 65,528 shares issued and outstanding as of September 30, 2015 and December 31, 2014, respectively	7	7
Additional paid-in capital	516,607	426,171
Retained earnings	206,991	129,814
Accumulated other comprehensive loss	(431)	(334)
TOTAL STOCKHOLDERS’ EQUITY	723,174	555,658
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 1,072,892	$ 811,023