ACCRUED EXPENSES (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
ACCRUED EXPENSES
Cost sharing expenses under license agreements	$ 396	$ 363
Other fees and services	10	15
Payroll, payroll taxes and benefits	26	13
Professional services	144	151
Clinical, non-clinical and regulatory services	23	20
Property taxes	11	9
Franchise taxes	21	14
Total	$ 631	$ 585