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Loans Receivable and Allowance for Loan Losses: Summary of TDR Loans (Details) - USD ($)	Sep. 30, 2019	Sep. 30, 2018
Financing Receivable, Troubled Debt Restructuring [Line Items]
TDR loans included in impaired loans	$ 3,269,000	$ 3,278,000
TDR Loans, commitment to lend additional funds	0	0
Allowance for loan losses	9,690,000	9,530,000
Troubled Debt Restructured Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Allowance for loan losses	$ 56,000	$ 97,000

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- References

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Troubled debt restructured loans included in impaired loans.

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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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-Topic 310
-SubTopic 10
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