Participations Sold - Schedule of participations sold (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Participating Mortgage Loans [Line Items]
Participations sold	$ 0	$ 25,130
Commercial Mortgage Portfolio Segment
Participating Mortgage Loans [Line Items]
Participations sold	$ 0	$ 25,130

The aggregate amount of the participation liability at the end of the accounting period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 470
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481212/470-30-50-1

Name:	us-gaap_ParticipatingMortgageLoansParticipationLiabilitiesAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant