LEASES - Supplemental cash flow information related to leases (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Operating cash flows from operating leases	$ 1,647	$ 2,585	$ 3,437	$ 3,873
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 663	$ 798	$ 6,424	$ 9,659