Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
ASSETS
Cash and cash equivalents	$ 272,127	$ 114,172
Restricted cash	2,221	1,551
Investments	28,239	22,054
Receivables	8,646	22,146
Inventory	7,039	0
Prepaid expenses and other current assets	5,528	4,422
Total current assets	323,800	164,345
Property and equipment, net	7,113	7,347
Other assets	3,802	3,590
Total assets	334,715	175,282
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts payable	18,713	13,988
Accrued expenses	33,942	21,365
Interest payable	21,670	14,904
Deferred collaboration revenue	150	2,120
Lease financing obligation	1,179	1,377
Senior credit facility	0	9,020
Non-recourse notes payable	30,000	29,561
Total current liabilities	105,654	92,335
Royalty financing obligation	124,717	0
Lease financing obligation	3,871	3,406
Senior credit facility	0	41,289
Secured term loan	119,735	0
Stockholders’ equity:
Preferred stock, $0.01 par value; shares authorized — 5,000; no shares outstanding	0	0
Common stock, $0.01 par value; shares authorized — 450,000; shares issued and outstanding — 176,883 at December 31, 2020 and 154,082 at December 31, 2019	1,769	1,541
Additional paid-in capital	1,002,408	877,300
Accumulated other comprehensive income (loss)	3	39
Accumulated deficit	(1,023,442)	(840,628)
Total stockholders’ (deficit) equity	(19,262)	38,252
Total liabilities and stockholders’ equity	$ 334,715	$ 175,282