Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 210,314	$ 272,127
Restricted cash	4,348	2,221
Investments	8,114	28,239
Trade receivables	27,620	8,646
Inventories	9,846	7,039
Prepaid expenses and other current assets	5,560	5,528
Total current assets	265,802	323,800
Property and equipment, net	7,669	7,113
Other assets	3,813	3,802
Total assets	277,284	334,715
Liabilities and Stockholders’ Equity
Accounts payable	10,087	18,713
Accrued expenses	48,765	33,942
Interest payable	25,217	21,670
Deferred revenue	551	150
Lease financing obligation	981	1,179
Non-recourse notes payable	30,000	30,000
Total current liabilities	115,601	105,654
Lease financing obligation	4,100	3,871
Royalty financing obligation	136,862	124,717
Secured term loan	126,796	119,735
Stockholders’ equity:
Preferred stock, $0.001 par value; shares authorized - 5,000; no shares issued and outstanding	0	0
Common stock, $0.01 par value: shares authorized - 450,000; shares issued and outstanding – 178,725 in 2021 and 176,883 in 2020	1,787	1,769
Additional paid-in capital	1,022,975	1,002,408
Accumulated other comprehensive income	87	3
Accumulated deficit	(1,130,924)	(1,023,442)
Total stockholders’ equity	(106,075)	(19,262)
Total liabilities and stockholders’ equity	$ 277,284	$ 334,715