Loans by Type - Summary of ACL by Category (Details) - USD ($) $ in Thousands	6 Months Ended	9 Months Ended
Jun. 30, 2024	Sep. 30, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 13,089
Ending balance	13,634
Loans Excluding Unfunded Commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	13,089	$ 13,539
Provision for (release of) credit losses	545	(450)
Ending balance	13,634
Loans Excluding Unfunded Commitments \| C&I
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	5,412	5,978
Provision for (release of) credit losses	502	(566)
Ending balance	5,914
Loans Excluding Unfunded Commitments \| CRE
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,093	940
Provision for (release of) credit losses	23	153
Ending balance	1,116
Loans Excluding Unfunded Commitments \| Faith-based CRE
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	6,476	6,437
Provision for (release of) credit losses	(11)	39
Ending balance	6,465
Loans Excluding Unfunded Commitments \| Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	108	184
Provision for (release of) credit losses	31	$ (76)
Ending balance	$ 139

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

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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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