SELECTED FINANCIAL STATEMENT CAPTIONS - LIABILITIES (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Accounts payable:
Clinical and regulatory expenses	$ 699	$ 534
Professional fees	817	477
Selling expenses	671	932
Manufacturing costs	283	378
Board member compensation	283	136
Other vendors	120	262
Total accounts payable	2,873	2,719
Accrued interest payable, related parties	142	91
Accrued interest payable	618	579
Accrued expenses:
Payroll expenses	877	1,097
Government rebates and other rebates	4,461	4,371
Other accrued expenses	747	332
Total accrued expenses	6,085	5,800
Total accounts payable and accrued expenses	$ 9,718	$ 9,189