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Condensed Consolidated Statements of Shareholders' Equity (Unaudited) (Parentheticals) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Adjustment for pension and postretirement benefit liability, tax | $ 19 | $ 14 | $ 38 | $ 28
Adjustment for interest rate swap, tax | (497) | 525 | (43) | 2,028
Adjustment for interest rate swap, tax | $ 497 | $ (525) | $ 43 | $ (2,028)

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