COMMITMENTS AND CONTINGENCIES - Leases expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating lease, weighted average remaining lease term	2 years 10 months 24 days		2 years 10 months 24 days
Operating lease costs	$ 143	$ 43	$ 269	$ 92
Variable lease costs	54	13	120	21
Total lease costs	$ 197	$ 56	$ 389	$ 113
Minimum
Operating lease liability discount rates (in percent)	3.99%		3.99%
Maximum
Operating lease liability discount rates (in percent)	8.95%		8.95%