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Loans - TDR's by Class and Specific Reserves More Than 30 Days Past Due (Details) $ in Thousands	Sep. 30, 2020 USD ($) loan	Sep. 30, 2019 USD ($) loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	15	9
Balance	$ 2,814	$ 1,084
Specific Reserves	$ 93	$ 142
Commercial |    Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	3	0
Balance	$ 1,472	$ 0
Specific Reserves	$ 0	$ 0
Commercial |    Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Specific Reserves	$ 0	$ 0
Commercial |    Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	4	3
Balance	$ 424	$ 251
Specific Reserves	$ 92	$ 131
Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Specific Reserves	$ 0	$ 0
Residential |    Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0	0
Balance	$ 0	$ 0
Specific Reserves	$ 0	$ 0
Residential |    Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	6	5
Balance	$ 743	$ 666
Specific Reserves	$ 0	$ 11
Home equity line of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	1	1
Balance	$ 165	$ 167
Specific Reserves	$ 0	$ 0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	1	0
Balance	$ 10	$ 0
Specific Reserves	$ 1	$ 0

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- Definition

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- Definition

Financing receivables that are greater than 30 days past due.

+ References

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- Definition

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+ References

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