CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 109,691	$ 110,949
Accounts receivable, net	43,488	37,211
Inventories, net	3,077	3,396
Prepaid and other current assets	25,726	56,551
Total current assets	181,982	208,107
Property and equipment, net	16,625	13,064
Intangible assets, net	666,655	692,099
Investments	10,362	11,784
Other long-term assets	7,840	7,812
Total assets	883,464	932,866
Current liabilities:
Accounts payable	5,421	6,138
Accrued rebates, returns and discounts	71,655	75,759
Accrued liabilities	19,976	31,361
Current portion of Senior Notes	115,000	120,000
Interest payable	8,794	11,645
Other current liabilities	2,116	1,133
Total current liabilities	222,962	246,036
Contingent consideration liability	1,066	1,038
Senior Notes	136,418	158,309
Convertible Notes	292,604	287,798
Other long-term liabilities	21,869	19,350
Total liabilities	674,919	712,531
Commitments and contingencies
Shareholders’ equity:
Common stock	6	6
Additional paid-in capital	405,445	402,934
Accumulated deficit	(196,901)	(182,600)
Accumulated other comprehensive loss	(5)	(5)
Total shareholders’ equity	208,545	220,335
Total liabilities and shareholders' equity	$ 883,464	$ 932,866