LEASES - Other Information Related to Leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Cash paid for amounts included in measurement of lease liabilities
Operating cash flows from operating leases	$ 6,226	$ 4,675	$ 17,569	$ 15,797
Operating cash flows from finance leases	81	82	252	247
Financing cash flows from finance leases	119	71	356	205
Right-of-use assets obtained in exchange for lease obligations
Operating leases	721	382	9,304	1,969
Finance leases	$ 611	$ 3	$ 1,017	$ 48