DERIVATIVE INSTRUMENTS - Summary of Fair Value Information about Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Assets
Total derivative assets	$ 457,119	$ 342,064	[1]
Liabilities
Interest rate swaps	96,618	108,724
Total derivative liabilities	156,182	204,172	[1]
Futures contracts
Assets
Other derivative assets	139,108	33,179
Total derivative assets	139,108	33,179
Liabilities
Other derivative liabilities	37,049	11,919
Total derivative liabilities	37,049	11,919
Futures contracts | Secured Overnight Financing Rate (SOFR)
Liabilities
Other derivative liabilities	36,400
Purchase commitments
Assets
Other derivative assets	2,119	1,832
Total derivative assets	2,119	1,832
Liabilities
Other derivative liabilities	3,328	460
Total derivative liabilities	3,328	460
Interest rate swaps
Assets
Interest rate swaps	30,026	33,006
Total derivative assets	30,026	33,006
Liabilities
Total derivative liabilities	96,618	108,724
Current notional	58,987,104	52,277,300
Interest rate swaptions
Assets
Other derivative assets	264,406	256,991
Total derivative assets	264,406	256,991
TBA derivatives
Assets
Other derivative assets	21,460	17,056
Total derivative assets	21,460	17,056
Liabilities
Other derivative liabilities	19,187	69,270
Total derivative liabilities	19,187	69,270
Credit derivatives
Liabilities
Other derivative liabilities	$ 0	13,799
Total derivative liabilities		13,799
Credit derivatives | Maximum
Liabilities
Current notional		$ 420,000

[1] (1)Derived from the audited consolidated financial statements at December 31, 2022.