LEASES - Components of Lease Expense and Payments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
LEASES
Operating lease cost	$ 6,194	$ 4,248	$ 12,337	$ 8,473
Short-term lease cost	645	729	1,154	1,137
Variable lease cost	642	1,016	1,446	2,080
Total operating lease cost	7,481	5,993	14,937	11,690
Payments for lease liabilities			10,800	7,600
Lease liabilities arising from ROU			5,100	6,300
Finance lease cost:
Amortization of right-of-use asset	782	615	1,579	1,190
Variable costs	210	197	458	392
Interest costs	95		197
Total finance lease cost	1,087	$ 812	2,234	1,582
Finance leases cost included in property, plant and equipment	27,200		27,200		$ 30,800
Accumulated amortization related to finance leases	12,000		12,000		12,100
Principal payments, finance lease liabilities	600		574
Operating cash flows for finance lease liabilities	100
Additional finance lease liabilities recognized	200			$ 1,400
Finance lease, disposed			1,000
Finance lease liability	5,755		5,755		$ 6,052
Finance lease liability, current	$ 900		$ 900