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Loans and Investments - Non-performing Loans (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2026 USD ($) loan	Mar. 31, 2025 USD ($) loan	Dec. 31, 2025 USD ($) loan
Loans and Investments
Number of loans | loan	545		632
Bridge loans, total UPB	$ 337,364		$ 384,930
Number of nonaccrual loans with specific reserves | loan		2
UPB of nonaccrual loans with specific reserves		$ 74,100
Financing receivable, nonaccrual, specific reserve		7,300
Interest income recognized on nonaccrual loans	$ 6,700	$ 4,500
Non-performing loans
Loans and Investments
Number of loans | loan	19		26
Carrying value of loans	$ 460,000		$ 545,000
Loan loss reserves	16,100		10,200
Bridge loans, total UPB	481,450		569,137
Non-performing loans | Financial Asset, Greater Than 60 Days Past Due
Loans and Investments
Interest receivable	200		6,600
Bridge loans, total UPB	$ 20,800		$ 237,000

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