LEASES AND OTHER COMMITMENTS - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
LEASES AND OTHER COMMITMENTS
Operating lease costs	$ 2,224	$ 1,908	$ 4,254	$ 3,842
Finance lease costs:
Amortization of assets	4,134	2,782	7,277	6,796
Interest on lease liabilities	910	639	1,543	1,309
Total finance lease costs	5,044	3,421	8,820	8,105
Variable and short-term lease costs	413	703	911	1,286
Total lease costs	$ 7,681	$ 6,032	$ 13,985	$ 13,233