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Loans and Investments - Schedule of Impaired Loans (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2026 USD ($) loan	Dec. 31, 2025 USD ($) loan
Loans and Investments
UPB	$ 337,364	$ 384,930
Carrying Value	334,679	382,190
Allowance for Credit Losses	$ 31,565	$ 43,090
Wtd. Avg. First Dollar LTV Ratio	0	0
Wtd. Avg. Last Dollar LTV Ratio	0.96	0.96
Number of impaired loans (less unearned revenue and other holdbacks and adjustments) by asset class | loan	17	20
Multifamily
Loans and Investments
UPB	$ 318,709	$ 366,275
Carrying Value	316,068	363,635
Allowance for Credit Losses	$ 26,962	$ 38,487
Wtd. Avg. First Dollar LTV Ratio	0	0
Wtd. Avg. Last Dollar LTV Ratio	0.96	0.96
Retail
Loans and Investments
UPB	$ 16,955	$ 16,955
Carrying Value	16,911	16,855
Allowance for Credit Losses	$ 2,903	$ 2,903
Wtd. Avg. First Dollar LTV Ratio	0	0
Wtd. Avg. Last Dollar LTV Ratio	0.97	0.97
Commercial
Loans and Investments
UPB	$ 1,700	$ 1,700
Carrying Value	1,700	1,700
Allowance for Credit Losses	$ 1,700	$ 1,700
Wtd. Avg. First Dollar LTV Ratio	0	0
Wtd. Avg. Last Dollar LTV Ratio	1	1

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Carrying value of impaired financing receivables.

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For an impaired loan, the weighted average loan to value ratio that is calculated by comparing the total of the carrying value of the company's loan and all senior lien positions within the capital stack to the fair value of the underlying collateral to determine the point at which the company will absorb a total loss of its position.

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For an impaired loan, the weighted average loan to value ratio that is calculated by comparing the total of the carrying value of the company's loan and all senior lien positions within the capital stack to the fair value of the underlying collateral to determine the point at which the company will initially absorb a loss.

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The number of impaired loans (less unearned revenue and other holdbacks and adjustments) by asset class.

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Amount, excluding accrued interest, of allowance for credit loss at acquisition date of financing receivable purchased with credit deterioration. Excludes net investment in lease.

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Amount at par value of financing receivable purchased with credit deterioration.

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