Other Assets and Liabilities - Summary of Components of Other Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Other Assets And Liabilities Disclosure [Abstract]
Accrued dividends payable	$ 81,214	$ 107,390	$ 106,455
Accrued interest payable	77,855	97,820
Other real estate liabilities	72,018	0
Accrued management and incentive fees payable	18,534	26,342
Accounts payable and other liabilities	13,834	7,265
Current expected credit loss reserves for unfunded loan commitments	10,412	15,371
Derivative liabilities	5,238	94,817
Secured debt repayments pending servicer remittance	3,742	13,526
Other liabilities	$ 282,847	$ 362,531