LEASES - Narrative (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets, net	$ 62,588	$ 37,466
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	42 years
Real Estate and Office Equipment
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets, net	$ 59,800
Real Estate and Office Equipment | Maximum
Lessee, Lease, Description [Line Items]
Term of contract	43 years