CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 113,009	$ 253,256
Marketable securities	58,742	140,915
Accounts receivable, net	94,163	75,347
Inventories	31,553	26,691
Prepaid and other current assets	19,100	18,961
Note receivable	0	10,000
Total current assets	316,567	525,170
Property and equipment, net	4,116	7,521
Goodwill	422,513	422,513
Intangible assets, net	23,620	217,033
Operating lease right-of-use asset	23,286
Deferred tax assets	630	1,260
Restricted cash	495	495
Other long-term assets	0	1,467
Total assets	791,227	1,175,459
Current liabilities:
Accounts payable	27,021	14,487
Accrued expenses	177,079	129,537
Current portion of convertible notes, net	0	21,276
Current portion of operating lease liability	4,077
Current portion of acquisition-related contingent consideration	17	144
Total current liabilities	208,194	165,444
Long-term liabilities:
Convertible notes, net	277,034	261,933
Long-term operating lease liability	19,791
Long-term acquisition-related contingent consideration	0	215
Other long-term liabilities	89	1,212
Total liabilities	505,108	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; 33,999,081 and 34,606,760 shares issued and outstanding at December 31, 2019 and December 31, 2018, respectively	339	346
Additional paid-in capital	1,297,917	1,292,736
Accumulated other comprehensive loss	(3,239)	(3,985)
Accumulated deficit	(1,008,898)	(542,442)
Total stockholders’ equity	286,119	746,655
Total liabilities and stockholders’ equity	$ 791,227	$ 1,175,459