Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 746,567	$ 567,923
Marketable securities	296,675	299,910
Accounts receivable, net of allowances of $2,072 and $1,521, respectively	209,062	253,119
Inventories	286,786	236,490
Prepaid expenses and other current assets	197,735	168,684
Total current assets	1,736,825	1,526,126
Property and equipment, net	76,319	76,961
Investments	36,136	36,136
Deferred tax assets	70,433	70,960
Other assets	19,885	18,824
TOTAL ASSETS	1,939,598	1,729,007
CURRENT LIABILITIES:
Accounts payable	60,984	79,457
Accrued liabilities	75,291	90,951
Deferred revenue	383,245	273,350
Other current liabilities	12,993	15,795
Total current liabilities	532,513	459,553
Income taxes payable	17,581	14,498
Lease financing obligations, non-current	39,136	39,593
Deferred revenue, non-current	113,925	99,585
Other long-term liabilities	8,069	7,958
TOTAL LIABILITIES	711,224	621,187
Commitments and contingencies (Note 5)
STOCKHOLDERS’ EQUITY:
Preferred stock, $0.0001 par value—100,000 shares authorized, no shares issued and outstanding as of March 31, 2017 and December 31, 2016	0	0
Common stock, $0.0001 par value—1,000,000 shares authorized as of March 31, 2017 and December 31, 2016; 71,904 and 70,811 shares issued and outstanding as of March 31, 2017 and December 31, 2016, respectively	7	7
Additional paid-in capital	711,123	674,183
Retained earnings	518,874	435,105
Accumulated other comprehensive loss	(1,630)	(1,475)
TOTAL STOCKHOLDERS’ EQUITY	1,228,374	1,107,820
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 1,939,598	$ 1,729,007