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Allowance for Credit Losses (Narratives) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Mar. 31, 2025
Financing Receivable Impaired [Line Items] |  |  |
Percentage of estimated gain loss | 4.00% |  |
Paid and unpaid percentage |  | 1.00% |
Allowance for expected credit losses | $ 5.5 |  | $ 5.1
Available for sale securities, accrued interest receivable | 28.9 |  | 29.4
Commercial Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Premiums Receivable Gross | $ 1.0 |  | $ 0.1
Credit card receivables |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Average Historical Chargeback Term | The Company rents equipment to corporate customers for which payment terms are 30 days. |  |
Accrued interest receivables |  |  |
Financing Receivable Impaired [Line Items] |  |  |
Average Historical Chargeback Term | Historical credit loss experience provides additional support for the estimation of expected credit losses. In assessing the credit losses, the portfolio is reviewed on a collective basis, using loan-specific cash flows to determine the fair value of the collateral in the event of default. Adjustments to this analysis are made to assess loans with a loan-to-value of 65% or greater. |  |

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