Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 236,459	$ 141,106
Short-term investments	482,396	153,961
Accounts receivable, net	76,188	74,401
Inventories	72,895	59,578
Prepaid expenses and other current assets	37,563	61,805
Total current assets	905,501	490,851
Long-term investments	5,471	5,196
Property and equipment, net	129,075	129,559
Goodwill	288,629	276,130
Other intangible assets, net	89,859	103,565
Other assets, net	59,251	76,543
Total assets	1,477,786	1,081,844
Current liabilities:
Accounts payable	38,857	39,577
Accrued expenses	60,376	50,100
Deferred income on shipments to distributors	56,701	45,568
Income taxes	4,057	4,450
Total current liabilities	159,991	139,695
Long-term debt		72,500
Convertible debt	338,717
Other non-current liabilities	36,246	42,691
Total liabilities	534,954	254,886
Commitments and contingencies
Stockholders' equity:
Preferred stock - $0.0001 par value; 10,000 shares authorized; no shares issued
Common stock - $0.0001 par value; 250,000 shares authorized; 42,562 and 41,889 shares issued and outstanding at September 30, 2017 and December 31, 2016, respectively	4	4
Additional paid-in capital	87,004	24,463
Retained earnings	856,159	801,999
Accumulated other comprehensive income (loss)	(335)	492
Total stockholders' equity	942,832	826,958
Total liabilities and stockholders' equity	$ 1,477,786	$ 1,081,844