Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
CURRENT ASSETS:
Cash and cash equivalents	$ 886,160	$ 859,192
Marketable securities	851,880	676,363
Accounts receivable, net of rebates and allowances of $7,638 and $7,535, respectively	207,339	247,346
Inventories	268,131	306,198
Prepaid expenses and other current assets	165,664	177,330
Total current assets	2,379,174	2,266,429
Property and equipment, net	73,825	74,279
Investments	36,136	36,136
Deferred tax assets	68,020	65,125
Other assets	22,879	18,891
TOTAL ASSETS	2,580,034	2,460,860
CURRENT LIABILITIES:
Accounts payable	70,431	52,200
Accrued liabilities	85,728	133,827
Deferred revenue	274,677	327,706
Other current liabilities	26,943	16,172
Total current liabilities	457,779	529,905
Income taxes payable	37,358	34,067
Lease financing obligations, non-current	37,138	37,673
Deferred revenue, non-current	181,377	187,556
Other long-term liabilities	21,343	9,745
TOTAL LIABILITIES	734,995	798,946
Commitments and contingencies (Note 5)
STOCKHOLDERS’ EQUITY:
Preferred stock, $0.0001 par value—100,000 shares authorized and no shares issued and outstanding as of March 31, 2018 and December 31, 2017	0	0
Common stock, $0.0001 par value—1,000,000 shares authorized as of March 31, 2018 and December 31, 2017; 74,338 and 73,706 shares issued and outstanding as of March 31, 2018 and December 31, 2017	8	7
Additional paid-in capital	841,431	804,731
Retained earnings	1,007,226	859,114
Accumulated other comprehensive loss	(3,626)	(1,938)
TOTAL STOCKHOLDERS’ EQUITY	1,845,039	1,661,914
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 2,580,034	$ 2,460,860