LEASES - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 18,250	$ 19,020
Right-of-use assets obtained in exchange for lease liabilities
Operating leases	$ 5,639	$ 12,608