Borrowed Funds (Subordinated Debentures) (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
Dec. 31, 2021	Sep. 30, 2020	Dec. 31, 2020
Debt Instrument [Line Items]
Subordinated Debt not Net of Issuance Costs	$ 75,000	$ 30,000
Debt Issuance Costs, Net	1,670	$ 664
Subordinated Debt	$ 102,891		$ 29,364
Number of Maturity Years Remaining to Qualify as Tier 2 Capital	5 years	5 years
Percent Reduction Each Year to Tier 2 Capital until Subordinated Debt Maturity Date	20.00%	20.00%
Subordinated Borrowing, Interest Rate	3.25%	5.00%
Basis spread on variable rate	230.00%	487.00%
Subordinated Debenture Term	10 years	10 years
Number of Years Subordinated Debt not Pre-Payable	5 years	5 years
Issued Third Quarter 2021
Debt Instrument [Line Items]
Subordinated Debt	$ 73,400
Issued Third Quarter 2020
Debt Instrument [Line Items]
Subordinated Debt	$ 29,500		$ 29,400

Number of Maturity Years Remaining to Qualify as Tier 2 Capital

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Number of Years Subordinated Debt not Pre-Payable

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Percent Reduction Each Year to Tier 2 Capital until Subordinated Debt Maturity Date

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Subordinated Debenture Term

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Subordinated Debt not Net of Issuance Costs

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Stated interest rate of the subordinated debt.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

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