CREDIT FACILITY - Interest expense and unused line of credit fees (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
CREDIT FACILITY
Interest expense	$ 1,338	$ 979	$ 2,460	$ 1,964
Amortization of debt issuance costs	142	123	277	249
Unused line of credit fees and other	47	38	101	75
Total interest expense	$ 1,527	$ 1,140	$ 2,838	$ 2,288