Loan Receivables Held for Investment - Schedule Of Company's Investments In Loan Receivables Held For Investment (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Total Commitment	$ 1,002,970	$ 905,954
Loan Balance	953,110	871,503
Carrying Value	$ 948,185	$ 867,687
Loan 1 [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Investment Type	Loan origination	Loan origination
Origination Date	Dec. 17, 2021	Dec. 17, 2021
Total Commitment	$ 29,276	$ 29,276
Loan Balance	$ 29,276	$ 29,276
Contractual Interest Rate	SOFR + 3.06%	SOFR + 3.06%
Loans receivable basis spread on variable rate	3.06%	3.06%
Carrying Value	$ 29,276	$ 29,276
Interest rate	7.39%	7.54%
Maturity Date	Jan. 10, 2026	Jan. 10, 2026
Payment Terms	Interest only	Interest only
Loan 1 [Member] | Multifamily [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Loan Type	Multifamily	Multifamily
Loan 3 [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Investment Type		Loan origination
Origination Date		Feb. 14, 2022
Total Commitment		$ 42,750
Loan Balance		$ 41,000
Contractual Interest Rate		SOFR + 6.50%
Loans receivable basis spread on variable rate		6.50%
Carrying Value		$ 40,971
Interest rate		10.98%
Maturity Date		Mar. 10, 2025
Payment Terms		Interest only
Loan 3 [Member] | Hospitality [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Loan Type		Hospitality
Loan 5 [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Investment Type	Loan origination	Loan origination
Origination Date	Jul. 14, 2022	Jul. 14, 2022
Total Commitment	$ 55,935	$ 55,935
Loan Balance	$ 55,935	$ 55,935
Contractual Interest Rate	SOFR + 4.25%	SOFR + 4.25%
Loans receivable basis spread on variable rate	4.25%	4.25%
Carrying Value	$ 55,935	$ 55,935
Interest rate	8.57%	8.78%
Maturity Date	Aug. 05, 2025	Aug. 05, 2025
Payment Terms	Interest only	Interest only
Loan 5 [Member] | Office [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Loan Type	Office	Office
Loan 6 [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Investment Type	Purchase	Purchase
Origination Date	Jul. 07, 2022	Jul. 07, 2022
Total Commitment	$ 27,748	$ 27,748
Loan Balance	$ 27,748	$ 27,748
Contractual Interest Rate	SOFR + 4.75%	SOFR + 4.75%
Loans receivable basis spread on variable rate	4.75%	4.75%
Carrying Value	$ 27,738	$ 27,715
Interest rate	9.07%	9.23%
Maturity Date	Jul. 05, 2025	Jul. 05, 2025
Payment Terms	Interest only	Interest only
Loan 6 [Member] | Hospitality [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Loan Type	Hospitality	Hospitality
Loan 7 [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Investment Type	Purchase	Purchase
Origination Date	Nov. 22, 2022	Nov. 22, 2022
Total Commitment	$ 25,224	$ 25,224
Loan Balance	$ 19,625	$ 19,625
Contractual Interest Rate	SOFR + 9.05%	SOFR + 9.05%
Loans receivable basis spread on variable rate	9.05%	9.05%
Carrying Value	$ 19,625	$ 19,625
Interest rate	13.38%	13.53%
Maturity Date	Jul. 10, 2024	Jul. 10, 2024
Payment Terms	Interest only	Interest only
Loan 7 [Member] | Mixed Use [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Loan Type	Mixed Use	Mixed Use
Loan 8 [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Investment Type	Loan origination	Loan origination
Origination Date	Mar. 10, 2023	Mar. 10, 2023
Total Commitment	$ 35,800	$ 35,800
Loan Balance	$ 34,910	$ 34,692
Contractual Interest Rate	SOFR + 3.50%	SOFR + 3.50%
Loans receivable basis spread on variable rate	3.50%	3.50%
Carrying Value	$ 34,788	$ 34,540
Interest rate	7.82%	7.98%
Maturity Date	Mar. 10, 2026	Mar. 10, 2026
Payment Terms	Interest only	Interest only
Loan 8 [Member] | Industrial Property [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Loan Type	Industrial	Industrial
Loan 9 [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Investment Type	Purchase	Purchase
Origination Date	Mar. 31, 2023	Mar. 31, 2023
Total Commitment	$ 157,509	$ 157,509
Loan Balance	$ 157,509	$ 157,509
Contractual Interest Rate	SOFR + 2.25%	SOFR + 2.25%
Loans receivable basis spread on variable rate	2.25%	2.25%
Carrying Value	$ 157,509	$ 157,509
Interest rate	6.57%	6.65%
Maturity Date	Aug. 09, 2025	Aug. 09, 2025
Payment Terms	Interest only	Interest only
Loan 9 [Member] | Student Housing [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Loan Type	Student Housing	Student Housing
Loan 10 [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Investment Type		Loan origination
Origination Date		Aug. 31, 2023
Total Commitment		$ 86,300
Loan Balance		$ 85,000
Contractual Interest Rate		SOFR + 2.90%
Loans receivable basis spread on variable rate		2.90%
Carrying Value		$ 84,493
Interest rate		7.38%
Maturity Date		Sep. 10, 2026
Payment Terms		Interest only
Loan 10 [Member] | Multifamily [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Loan Type		Multifamily
Loan 11 [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Investment Type	Loan origination	Loan origination
Origination Date	Nov. 02, 2023	Nov. 02, 2023
Total Commitment	$ 146,000	$ 146,000
Loan Balance	$ 134,984	$ 132,885
Contractual Interest Rate	SOFR + 5.50%	SOFR + 5.50%
Loans receivable basis spread on variable rate	5.50%	5.50%
Carrying Value	$ 134,512	$ 132,228
Interest rate	9.82%	9.98%
Maturity Date	Nov. 10, 2025	Nov. 10, 2025
Payment Terms	Interest only	Interest only
Loan 11 [Member] | Mixed Use [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Loan Type	Mixed Use	Mixed Use
Loan 12 [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Investment Type	Loan origination	Loan origination
Origination Date	May 07, 2024	May 07, 2024
Total Commitment	$ 30,000	$ 30,000
Loan Balance	$ 30,000	$ 30,000
Contractual Interest Rate	SOFR + 4.00%	SOFR + 4.00%
Loans receivable basis spread on variable rate	4.00%	4.00%
Carrying Value	$ 29,781	$ 29,758
Interest rate	8.32%	8.48%
Maturity Date	May 10, 2027	May 10, 2027
Payment Terms	Interest only	Interest only
Loan 12 [Member] | Hospitality [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Loan Type	Hospitality	Hospitality
Loan 13 [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Investment Type	Loan origination	Loan origination
Origination Date	May 16, 2024	May 16, 2024
Total Commitment	$ 110,000	$ 110,000
Loan Balance	$ 100,063	$ 100,063
Contractual Interest Rate	SOFR + 4.25%	SOFR + 4.25%
Loans receivable basis spread on variable rate	4.25%	4.25%
Carrying Value	$ 99,404	$ 99,275
Interest rate	8.57%	8.73%
Maturity Date	Jun. 10, 2026	Jun. 10, 2026
Payment Terms	Interest only	Interest only
Loan 13 [Member] | Mixed Use [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Loan Type	Mixed Use	Mixed Use
Loan 14 [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Investment Type	Loan origination	Loan origination
Origination Date	Jun. 11, 2024	Jun. 11, 2024
Total Commitment	$ 100,000	$ 100,000
Loan Balance	$ 100,000	$ 98,770
Contractual Interest Rate	SOFR + 3.75%	SOFR + 3.75%
Loans receivable basis spread on variable rate	3.75%	3.75%
Carrying Value	$ 99,255	$ 97,945
Interest rate	8.07%	8.23%
Maturity Date	Jul. 10, 2027	Jul. 10, 2027
Payment Terms	Interest only	Interest only
Loan 14 [Member] | Multifamily [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Loan Type	Multifamily	Multifamily
Loan 15 [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Investment Type	Loan origination	Loan origination
Origination Date	Dec. 17, 2024	Dec. 17, 2024
Total Commitment	$ 58,773	$ 59,412
Loan Balance	$ 58,721	$ 59,000
Contractual Interest Rate	SOFR + 4.50%	SOFR + 4.50%
Loans receivable basis spread on variable rate	4.50%	4.50%
Carrying Value	$ 58,196	$ 58,417
Interest rate	8.82%	8.88%
Maturity Date	Jan. 09, 2027	Jan. 09, 2027
Payment Terms	Interest only	Interest only
Loan 15 [Member] | Office [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Loan Type	Office	Office
Loan 16 [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Investment Type	Loan origination
Origination Date	Feb. 11, 2025
Total Commitment	$ 65,155
Loan Balance	$ 61,425
Contractual Interest Rate	SOFR + 2.35%
Loans receivable basis spread on variable rate	2.35%
Carrying Value	$ 60,814
Interest rate	6.67%
Maturity Date	Mar. 09, 2027
Payment Terms	Interest only
Loan 16 [Member] | Multifamily [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Loan Type	Multifamily
Loan 17 [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Investment Type	Loan origination
Origination Date	Feb. 11, 2025
Total Commitment	$ 79,650
Loan Balance	$ 67,275
Contractual Interest Rate	SOFR + 2.45%
Loans receivable basis spread on variable rate	2.45%
Carrying Value	$ 66,528
Interest rate	6.77%
Maturity Date	Mar. 09, 2027
Payment Terms	Interest only
Loan 17 [Member] | Multifamily [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Loan Type	Multifamily
Loan 18 [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Investment Type	Loan origination
Origination Date	Mar. 26, 2025
Total Commitment	$ 81,900
Loan Balance	$ 75,639
Contractual Interest Rate	SOFR + 2.35%
Loans receivable basis spread on variable rate	2.35%
Carrying Value	$ 74,824
Interest rate	6.67%
Maturity Date	Apr. 09, 2028
Payment Terms	Interest only
Loan 18 [Member] | Multifamily [Member]
Disclosure In Tabular Form Of Loans Receivable Held For Investment [Line Items]
Loan Type	Multifamily