CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 119,800	$ 253,256
Marketable securities	71,744	140,915
Accounts receivable, net	77,588	75,347
Inventories	28,644	26,691
Prepaid and other current assets	43,063	18,961
Note receivable	0	10,000
Total current assets	340,839	525,170
Property and equipment, net	7,912	7,521
Goodwill	422,513	422,513
Intangible assets, net	187,577	217,033
Operating lease right-of-use asset	6,642
Deferred tax assets	630	1,260
Restricted cash	495	495
Other long-term assets	0	1,467
Total assets	966,608	1,175,459
Current liabilities:
Accounts payable	26,554	14,487
Accrued expenses	172,285	129,537
Current portion of convertible notes, net	0	21,276
Current portion of operating lease liability	3,994
Current portion of deferred revenue	1,128	0
Current portion of acquisition-related contingent consideration	113	144
Total current liabilities	204,074	165,444
Long-term liabilities:
Convertible notes, net	273,124	261,933
Long-term operating lease liability	3,344
Long-term deferred revenue	5,171	0
Long-term acquisition-related contingent consideration	180	215
Other long-term liabilities	87	1,212
Total liabilities	485,980	428,804
Commitments and contingencies (Note P)
Stockholders’ equity:
Preferred stock, par value $0.01 per share, 2,000,000 shares authorized; none issued	0	0
Common stock, par value $0.01 per share, 117,500,000 shares authorized; 33,915,509 and 34,606,760 shares issued and outstanding at September 30, 2019 and December 31, 2018, respectively	339	346
Additional paid-in capital	1,292,458	1,292,736
Accumulated other comprehensive loss	(3,199)	(3,985)
Accumulated deficit	(808,970)	(542,442)
Total stockholders’ equity	480,628	746,655
Total liabilities and stockholders’ equity	$ 966,608	$ 1,175,459