Loans by Type - Summary of ACL by Category (Details) - USD ($) $ in Thousands	6 Months Ended	9 Months Ended
	Jun. 30, 2026	Sep. 30, 2025
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 13,597
Ending balance	14,374
Loans Excluding Unfunded Commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	13,597	$ 13,395
Provision for credit losses	777	202
Ending balance	14,374
Loans Excluding Unfunded Commitments \| C&I
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	5,833	5,897
Provision for credit losses	272	(64)
Ending balance	6,105
Loans Excluding Unfunded Commitments \| CRE
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	889	1,023
Provision for credit losses	99	(134)
Ending balance	988
Loans Excluding Unfunded Commitments \| Faith-based CRE
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	6,546	6,258
Provision for credit losses	538	288
Ending balance	7,084
Loans Excluding Unfunded Commitments \| Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	329	217
Provision for credit losses	(132)	$ 112
Ending balance	$ 197