GOVERNMENT AND GOVERNMENT-BACKED SECURITIES - Summary of Real Estate and Other Securities for Held to Maturity (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Outstanding Face Amount	$ 15,878,274	$ 18,562,039
Weighted Average Life (Years)	3 years 7 months 6 days
Residential Mortgage Backed Securities, Held To Maturity, Treasury
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Outstanding Face Amount	$ 25,000	25,000
Amortized Cost / Carrying Value	24,770	24,553
Fair Value	24,775	24,566
Unrecognized Gains /(Losses)	$ 5	$ 13
Number of Securities | security	1	1
Weighted Average Yield	4.30%	5.40%
Weighted Average Life (Years)	6 months	3 months 18 days