DERIVATIVE FINANCIAL INTSTRUMENTS - Summary of Outstanding Swaptions (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Net Estimated Fair Value	$ 1,362
Notional Amount	0
Payer Swaption [Member] | Long [Member]
Derivatives, Fair Value [Line Items]
Swaption Cost	55,955	$ 36,690
Net Estimated Fair Value	$ 88,852	$ 21,493
Derivative Instruments Average Months To Expiration	11 months	14 months 21 days
Notional Amount	$ 2,010,800	$ 400,000
Derivative Average Fixed Interest Rate	2.65%	2.27%
Term (Years)	10 years 9 months 18 days	11 years 10 months 24 days
Payer Swaption [Member] | Less Than Or Equal To One Year [Member] | Short [Member]
Derivatives, Fair Value [Line Items]
Swaption Cost	$ 22,250	$ 16,185
Net Estimated Fair Value	$ 43,296	$ 4,423
Derivative Instruments Average Months To Expiration	2 months 24 days	5 months 9 days
Notional Amount	$ 1,433,000	$ 1,331,500
Derivative Average Fixed Interest Rate	2.65%	2.29%
Term (Years)	10 years 9 months 18 days	11 years 4 months 24 days
Payer Swaption [Member] | Less Than Or Equal To One Year [Member] | Long [Member]
Derivatives, Fair Value [Line Items]
Swaption Cost	$ 31,905	$ 4,000
Net Estimated Fair Value	$ 65,684	$ 1,575
Derivative Instruments Average Months To Expiration	8 months 9 days	3 months 6 days
Notional Amount	$ 1,282,400	$ 1,258,500
Derivative Average Fixed Interest Rate	2.44%	1.66%
Term (Years)	11 years 3 months 18 days	5 years
Payer Swaption [Member] | One Year To Two Years [Member] | Long [Member]
Derivatives, Fair Value [Line Items]
Swaption Cost	$ 24,050	$ 32,690
Net Estimated Fair Value	$ 23,168	$ 19,918
Derivative Instruments Average Months To Expiration	15 months 24 days	18 months 12 days
Notional Amount	$ 728,400	$ 1,658,500
Derivative Average Fixed Interest Rate	3.00%	2.46%
Term (Years)	10 years	14 years 1 month 6 days