Asset-Specific Debt, Net (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023 USD ($) SecurityLoan	Dec. 31, 2022 USD ($) SecurityLoan
Financing provided
Participating Mortgage Loans [Line Items]
Count | SecurityLoan	3	4
Financing provided, Principal Balance	$ 822,873	$ 950,278
Financing provided, Book Value	$ 817,444	$ 942,503
Financing provided | LIBOR
Participating Mortgage Loans [Line Items]
Wtd. Avg. Yield/Cost	3.66%	3.29%
Collateral assets
Participating Mortgage Loans [Line Items]
Count | SecurityLoan	3	4
Collateral assets, Principal Balance	$ 981,538	$ 1,094,450
Collateral assets, Book Value	$ 971,397	$ 1,081,035
Collateral assets | LIBOR
Participating Mortgage Loans [Line Items]
Wtd. Avg. Yield/Cost	4.85%	4.73%