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Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease.

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Subsequent Events - Additional Information (Detail) - USD ($)			9 Months Ended
	Oct. 27, 2025	Jul. 15, 2025	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Subsequent Event [Line Items]
Repurchases of common stock			$ 2,767,000	$ 0
Multifamily loan on nonaccrual status			$ 24,327,000		$ 22,957,000
2029 Notes [Member]
Subsequent Event [Line Items]
Redemption of notes		$ 10,000,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Cash dividend per share	$ 0.25
Dividend payable amount	$ 30,000,000
Purchase of warrants	3,229,000
Repurchases of common stock	$ 6,100,000
Subsequent Event [Member] \| S 2025 Q4 Dividends [Member]
Subsequent Event [Line Items]
Dividends payable, date declared	Oct. 27, 2025
Dividends payable, date to be paid	Nov. 21, 2025
Dividends payable, date of record	Nov. 07, 2025