Loans Receivable - Schedule of Reserve for Loan Losses (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Reserve for loan losses, beginning of period	$ 8,280	$ 1,813
Provision for expected loan losses	2,539	6,534
Expected loan losses (recoveries) related to loans sold or repaid	(2,796)	(67)
Reserve for loan losses, end of period	8,023	8,280
Secured Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Reserve for loan losses, beginning of period	8,280	1,804
Provision for expected loan losses	2,539	6,527
Expected loan losses (recoveries) related to loans sold or repaid	(2,796)	(51)
Reserve for loan losses, end of period	8,023	8,280
Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Reserve for loan losses, beginning of period	0	9
Provision for expected loan losses	0	7
Expected loan losses (recoveries) related to loans sold or repaid	0	(16)
Reserve for loan losses, end of period	$ 0	$ 0

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479344/326-20-45-1

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

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- Definition

Amount excluding accrued interest, of decrease from sale and reclassification to held-for-sale of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-11

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- Details

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