DERIVATIVE INSTRUMENTS - Pre-tax Gain (Loss) on Derivative Instruments (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	May 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Pre-tax gains (losses) on interest rate derivatives recognized		$ (3,977)	$ (8,298)	$ 1,008
Total gain (loss) on derivatives		(16,579)	(332)	300
Interest Rate Cap
Derivative [Line Items]
Pre-tax gains (losses) on interest rate derivatives recognized		0	(1,103)	1,008
Interest Rate Swap
Derivative [Line Items]
Pre-tax gains (losses) on interest rate derivatives recognized		(7,723)	(7,195)	0
Interest rate swaps that discontinued hedge accounting		3,746	0	0
Interest expense | Interest Rate Cap
Derivative [Line Items]
Gain (loss) location of derivative instruments		0	(125)	300
Interest expense | Interest Rate Swap
Derivative [Line Items]
Gain (loss) location of derivative instruments	$ (3,700)	(12,799)	(115)	0
Gain (loss) location of derivative instruments not designated		(34)	(92)	0
Gain (loss) location of discontinued derivative instruments		$ (3,746)	$ 0	$ 0