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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (Parentheticals) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Adjustment for pension and postretirement benefit liability, tax | $ 14 | $ 20 | $ 42 | $ 60
Adjustment for interest rate swap, tax | $ (1,333) | $ (221) | $ (3,361) | $ (755)

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