Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
CURRENT ASSETS:
Cash and cash equivalents	$ 711,157	$ 859,192
Marketable securities	1,149,247	676,363
Accounts receivable, net of rebates and allowances of $6,541 and $7,535, respectively	260,917	247,346
Inventories	245,439	306,198
Prepaid expenses and other current assets	253,802	177,330
Total current assets	2,620,562	2,266,429
Property and equipment, net	73,736	74,279
Investments	35,036	36,136
Deferred tax assets	82,761	65,125
Other assets	20,019	18,891
TOTAL ASSETS	2,832,114	2,460,860
CURRENT LIABILITIES:
Accounts payable	53,182	52,200
Accrued liabilities	86,693	133,827
Accrued legal settlement (Note 10)	405,000	0
Deferred revenue	262,345	327,706
Other current liabilities	19,543	16,172
Total current liabilities	826,763	529,905
Income taxes payable	40,369	34,067
Lease financing obligations, non-current	36,594	37,673
Deferred revenue, non-current	186,299	187,556
Other long-term liabilities	22,116	9,745
TOTAL LIABILITIES	1,112,141	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 June 30, 2018 and December 31, 2017	0	0
Common stock, $0.0001 par value—1,000,000 shares authorized as of June 30, 2018 and December 31, 2017; 74,791 and 73,706 shares issued and outstanding as of June 30, 2018 and December 31, 2017	8	7
Additional paid-in capital	872,559	804,731
Retained earnings	851,957	859,114
Accumulated other comprehensive loss	(4,551)	(1,938)
TOTAL STOCKHOLDERS’ EQUITY	1,719,973	1,661,914
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 2,832,114	$ 2,460,860