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Condensed Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended
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Sep. 30, 2022 | Sep. 30, 2021
Statement of Comprehensive Income [Abstract] |  |
Unrealized appreciation (depreciation) on available-for-sale securities, tax | $ 2,268 | $ 340
Postretirement health plan amortization of transition obligation and prior service cost and change in net loss, tax | $ 1 | $ 2

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