Loans - Secured Loans by Property Type (Parenthetical) (Details) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023 USD ($) Loan	Dec. 31, 2022 USD ($) Loan	Jun. 30, 2023 USD ($)
Loans Details [Line Items]
Secured loans, principal	$ 54,589	$ 60,088	$ 57,292
Single Family Property-NonOwner Occupied [Member]
Loans Details [Line Items]
Number of secured loans | Loan	2	4
Secured loans, principal	$ 3,400	$ 5,900