Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 809,491	$ 649,950
Marketable securities	1,341,427	1,306,197
Accounts receivable, net of rebates and allowances of $9,614 and $9,120, respectively	271,246	331,777
Inventories	347,153	264,557
Prepaid expenses and other current assets	131,657	162,321
Total current assets	2,900,974	2,714,802
Property and equipment, net	41,529	75,355
Acquisition-related intangible assets, net	55,111	58,610
Goodwill	53,684	53,684
Investments	31,486	30,336
Operating lease right-of-use assets	98,552	0
Deferred tax assets	126,045	126,492
Other assets	25,063	22,704
TOTAL ASSETS	3,332,444	3,081,983
CURRENT LIABILITIES:
Accounts payable	89,823	93,757
Accrued liabilities	104,228	123,254
Deferred revenue	304,729	358,586
Other current liabilities	44,413	30,907
Total current liabilities	543,193	606,504
Income taxes payable	37,925	36,167
Operating lease liabilities, non-current	93,616	0
Finance lease liabilities, non-current	0	35,431
Deferred revenue, non-current	231,742	228,641
Other long-term liabilities	25,601	31,851
TOTAL LIABILITIES	932,077	938,594
Commitments and contingencies (Note 7)
STOCKHOLDERS’ EQUITY:
Preferred stock, $0.0001 par value—100,000 shares authorized and no shares issued and outstanding as of March 31, 2019 and December 31, 2018	0	0
Common stock, $0.0001 par value—1,000,000 shares authorized as of March 31, 2019 and December 31, 2018; 76,453 and 75,668 shares issued and outstanding as of March 31, 2019 and December 31, 2018	8	8
Additional paid-in capital	1,005,405	956,572
Retained earnings	1,395,534	1,190,803
Accumulated other comprehensive loss	(580)	(3,994)
TOTAL STOCKHOLDERS’ EQUITY	2,400,367	2,143,389
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 3,332,444	$ 3,081,983