LEASES AND OTHER COMMITMENTS - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
LEASES AND OTHER COMMITMENTS
Operating lease costs	$ 2,030	$ 1,934
Finance lease costs:
Amortization of assets	3,143	4,014
Interest on lease liabilities	782	670
Total finance lease costs	3,925	4,684
Variable and short-term lease costs	498	583
Total lease costs	$ 6,453	$ 7,201