LEASES - Right-of-Use Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Assets and Liabilities, Lessee [Abstract]
Operating Lease - ROU	$ 6,901	$ 6,929
Finance Leases - ROU	2,308	2,359
Total right-of-use assets	9,209	9,288
Operating leases liabilities - current	2,194	2,194
Finance lease liabilities - current	169	167
Total lease liabilities, current	2,363	2,361
Operating lease liabilities - non-current	4,730	4,811
Finance lease liabilities - non-current	2,260	2,303
Total lease liabilities, non-current	$ 6,990	$ 7,114