DERIVATIVE FINANCIAL INSTRUMENTS - Effect of Interest Rate Derivatives (Details) - Interest rate swaps - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative Instruments
Derivatives
Deferred gain (losses) included in AOCI (pretax)	$ (10,100)	$ (25,200)
Loss included in AOCI to be recognized in the next 12 months	(7,100)
Cash flow hedges
Derivatives
Unrealized gain (loss) recognized in AOCI, pretax	1,174	(18,398)	$ (26,013)
Deferred loss reclassified from AOCI to interest expense	$ (13,964)	$ (15,683)	$ (1,108)