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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($)
3 Months Ended 9 Months Ended
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)