CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 28,726	$ 22,214
Accounts and other receivables, net	9,392	11,368
Prepaid expenses and other current assets	5,832	5,997
Inventory	3,642	2,138
Total current assets	47,592	41,717
Property and equipment, net	492	357
Operating lease right-of-use assets	2,733	3,078
Intangible assets, net	25,824	27,669
Restricted cash	150	150
Total assets	76,791	72,971
Current liabilities:
Accounts payable	5,185	4,192
Accrued expenses	6,845	6,832
Deferred revenue	300	15
Other current liabilities	597	481
Total current liabilities	12,927	11,520
Long-term debt	50,775	47,223
Operating lease liabilities - noncurrent	2,483	2,898
Other long-term liabilities	3,012	3,000
Total liabilities	69,197	64,641
Contingencies (Note 14)
Stockholders' equity:
Preferred stock, $.001 par value, 5,000,000 shares authorized, no shares issued and outstanding	0	0
Common stock, $.001 par value, 300,000,000 and 150,000,000 shares authorized at September 30, 2020 and December 31, 2019, respectively; 131,421,846 and 109,417,322 shares issued and outstanding at September 30, 2020 and December 31, 2019, respectively	131	109
Additional paid-in capital	501,834	472,667
Accumulated deficit	(495,211)	(465,286)
Accumulated other comprehensive income	840	840
Total stockholders' equity	7,594	8,330
Total liabilities and stockholders' equity	$ 76,791	$ 72,971