DERIVATIVE INSTRUMENTS - Pre-tax Gain (Loss) on Derivative Instruments (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	May 31, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative [Line Items]
Pre-tax gains (losses) on interest rate derivatives recognized		$ 4,022	$ (8,281)	$ (8,034)	$ (8,986)
Total gain (loss) on derivatives		(4,193)	280	(12,382)	(114)
Interest Rate Cap
Derivative [Line Items]
Pre-tax gains (losses) on interest rate derivatives recognized		0	(398)	0	(1,103)
Interest Rate Swap
Derivative [Line Items]
Pre-tax gains (losses) on interest rate derivatives recognized		4,022	(7,883)	(11,780)	(7,883)
Interest rate swaps that discontinued hedge accounting		0	0	3,746	0
Interest expense | Interest Rate Cap
Derivative [Line Items]
Gain (loss) location of derivative instruments		0	269	0	(125)
Interest expense | Interest Rate Swap
Derivative [Line Items]
Gain (loss) location of derivative instruments	$ (3,700)	(4,152)	129	(8,604)	129
Gain (loss) location of derivative instruments not designated		(41)	(118)	(32)	(118)
Gain (loss) location of discontinued derivative instruments		$ 0	$ 0	$ (3,746)	$ 0