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Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands | 12 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024
Statement of Comprehensive Income [Abstract] |  |
Unrealized appreciation on available-for-sale securities, net of taxes | $ 1,665 | $ 378
Reclassification adjustment for realized gains (losses) included in net income, tax | (20) | 0
Change in post-retirement health plan gains and losses, net of taxes | $ 31 | $ 56

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