Transactions With Related Parties - Incurred Amounts by Related Parties (Detail) $ in Thousands	3 Months Ended
Mar. 31, 2025 USD ($) asset	Mar. 31, 2024 USD ($)
Revantage Corporate Services, LLC and Revantage Global Services Europe S.à r.l, EQ Management, LLC, BRE Hotels & Resorts, LLC LivCor, LLC, NNN PortCo - Reliant \| Related Party
Related Party Transaction [Line Items]
Related party transaction	$ 1,185	$ 251
Revantage Corporate Services, LLC And Revantage Global Services Europe S.à r.l. \| Related Party
Related Party Transaction [Line Items]
Related party transaction	(38)	251
EQ Management, LLC \| Related Party
Related Party Transaction [Line Items]
Related party transaction	575	0
LivCor LLC \| Related Party
Related Party Transaction [Line Items]
Related party transaction	159	0
BRE Hotels & Resorts, LLC \| Related Party
Related Party Transaction [Line Items]
Related party transaction	489	0
Total \| Related Party
Related Party Transaction [Line Items]
Related party transaction	658	64
BTIG, LLC \| Related Party
Related Party Transaction [Line Items]
Related party transaction	0	40
Repurchase of aggregate principal amount	0
BTIG, LLC \| Related Party \| October 2021 Senior Secured Notes \| Senior secured notes, net
Related Party Transaction [Line Items]
Repurchase of aggregate principal amount		26,200
Gryphon Mutual Property Americas IC \| Related Party
Related Party Transaction [Line Items]
Related party transaction	547	0
Insurance costs inclusive of premiums, capital surplus contributions, taxes and pro rata share of expenses	248	109
Gryphon Mutual Property Americas IC \| Affiliates of Manager
Related Party Transaction [Line Items]
Management fees paid to manager	29	2
Blackstone Internal audit services \| Related Party
Related Party Transaction [Line Items]
Related party transaction	$ 111	$ 24
CT Investment Management Co., LLC \| Related Party
Related Party Transaction [Line Items]
Number of assets in special servicing under CLOs \| asset	2

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