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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($) | 3 Months Ended | 9 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Other comprehensive income, net of income taxes: |  |  |  |
Income tax on minimum pension liability adjustments | $ (41,700) | $ (200,000) | $ (300,000) | $ (500,000)

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