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Summary Of Significant Accounting Policies (Schedule Of Amounts Reclassified Out Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Accumulated other comprehensive income (loss) at beginning of period | $ 961 | $ (8,640)
Total other comprehensive (loss) income, before tax | (20) | 87
Total tax benefit (expense) | 5 | (20)
Other comprehensive (loss) income, net of tax | (15) | 67
Accumulated other comprehensive income (loss) at end of period | 946 | (8,573)
Defined Benefit Pension Plan [Member] |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Amortization of unrecognized net (gain) loss | 0 | 147
Postretirement Benefit Plan [Member] |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |
Amortization of unrecognized net (gain) loss | (15) | (15)
Amortization of prior service credit | $ (5) | $ (45)

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