LEASES - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
Lease liability	$ 69,060	$ 74,982
Operating lease ROU assets	$ 59,597	$ 65,215
Minimum
Lessee, Lease, Description [Line Items]
Renewal term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Renewal term	20 years
Lease operation commence in 2021
Lessee, Lease, Description [Line Items]
Lease liability	$ 1,800
Operating lease ROU assets	1,500
Tenant allowance	$ 200