LEASES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
LEASES
Lessor, Administrative and late fees income	$ 5,100	$ 5,900	$ 15,000	$ 17,000
Lessee, Operating Lease, Existence of Option to Extend [true false]			true
Lessee, Operating Lease, Existence of Option to Terminate [true false]			true
Right-of-use assets	$ 36,034		$ 36,034		$ 41,698
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsMember		us-gaap:OtherAssetsMember		us-gaap:OtherAssetsMember
Operating lease liabilities	$ 41,410		$ 41,410		$ 46,391
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndOtherAccruedLiabilities		us-gaap:AccountsPayableAndOtherAccruedLiabilities		us-gaap:AccountsPayableAndOtherAccruedLiabilities
Operating lease weighted-average remaining lease term (in years)	35 years 4 months 24 days		35 years 4 months 24 days		35 years 10 months 24 days
Operating lease weighted-average discount rate	4.74%		4.74%		4.74%
Operating lease amount paid	$ 500	$ 600	$ 1,700	$ 1,900
Minimum
LEASES
Operating lease term (in years)	1 year		1 year
Operating lease renewal term (in years)	1 year		1 year
Maximum
LEASES
Operating lease term (in years)	44 years		44 years
Operating lease renewal term (in years)	69 years		69 years