CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 26,299	$ 22,214
Accounts and other receivables, net	14,390	11,368
Prepaid expenses and other current assets	5,647	5,997
Inventory	3,358	2,138
Total current assets	49,694	41,717
Property and equipment, net	425	357
Operating lease right-of-use assets	2,967	3,078
Intangible assets, net	27,054	27,669
Restricted cash	150	150
Total assets	80,290	72,971
Current liabilities:
Accounts payable	5,158	4,192
Accrued expenses	4,559	6,832
Deferred revenue	30	15
Other current liabilities	551	481
Total current liabilities	10,298	11,520
Long-term debt	47,716	47,223
Operating lease liabilities - noncurrent	2,764	2,898
Other long-term liabilities	3,038	3,000
Total liabilities	63,816	64,641
Contingencies (Note 12)
Stockholders' equity:
Preferred stock, $.001 par value, 5,000,000 shares authorized, no shares issued and outstanding	0	0
Common stock, $.001 par value, 150,000,000 shares authorized at March 31, 2020 and December 31, 2019; 124,741,832 and 109,417,322 shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively	125	109
Additional paid-in capital	493,969	472,667
Accumulated deficit	(478,460)	(465,286)
Accumulated other comprehensive income	840	840
Total stockholders' equity	16,474	8,330
Total liabilities and stockholders' equity	$ 80,290	$ 72,971