Transactions With Related Parties - Incurred Amounts by Related Parties (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026 USD ($) asset	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) asset	Jun. 30, 2025 USD ($)
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	$ 3,802	$ 2,456	$ 8,406	$ 3,641
Perform Properties, LLC \| Related Party
Related Party Transaction [Line Items]
Related party transaction	1,466	319	3,432	894
Brio Real Estate Services, LLC, Brio Real Estate (UK) Ltd And Brio Real Estate (AUS) Pty Ltd \| Related Party
Related Party Transaction [Line Items]
Related party transaction	1,672	1,101	3,377	1,101
BRE Hotels & Resorts, LLC \| Related Party
Related Party Transaction [Line Items]
Related party transaction	282	380	793	869
Revantage Corporate Services, LLC And Revantage Global Services Europe S.à r.l. \| Related Party
Related Party Transaction [Line Items]
Related party transaction	337	381	664	343
LivCor LLC \| Related Party
Related Party Transaction [Line Items]
Related party transaction	45	117	140	276
LendingOne, LLC \| Related Party
Related Party Transaction [Line Items]
Related party transaction	0	158	0	158
Total \| Related Party
Related Party Transaction [Line Items]
Related party transaction	1,375	615	2,255	1,273
Gryphon Mutual Property Americas IC \| Related Party
Related Party Transaction [Line Items]
Related party transaction	916	601	1,699	1,148
Insurance costs inclusive of premiums, capital surplus contributions, taxes and pro rata share of expenses			300	800
Gryphon Mutual Property Americas IC \| Affiliates of Manager
Related Party Transaction [Line Items]
Management fees paid to manager			5	31
Blackstone Securities Partners L.P \| Related Party
Related Party Transaction [Line Items]
Related party transaction	422	79	422	79
Lexington National Land Services \| Related Party
Related Party Transaction [Line Items]
Related party transaction	37	46	134	46
Blackstone internal audit services \| Related Party
Related Party Transaction [Line Items]
Related party transaction	$ 0	$ (111)	$ 0	$ 0
CT Investment Management Co., LLC \| Related Party
Related Party Transaction [Line Items]
Number of assets in special servicing under CLOs \| asset	3		3