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v3.21.2

Accumulated Other Comprehensive Income - Reclassifications out of AOCI (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Jun. 30, 2021 | Jun. 30, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |
Cost of sales | $ (291,122) |  |  | $ (238,469) |  |  | $ (828,424) | $ (737,722)
Other income (deductions), net | (2,442) |  |  | (2,776) |  |  | (6,760) | (7,438)
Income before income tax | 1,041 |  |  | (4,360) |  |  | 9,153 | (117,724)
Income taxes | 2,325 |  |  | 6,209 |  |  | (2,627) | 22,672
Net income (loss) | 3,366 | $ 5,152 | $ (1,992) | 1,849 | $ (86,595) | $ (10,306) | 6,526 | (95,052)
Post-retirement benefit plans |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |
Income taxes | 761 |  |  | 573 |  |  | 2,186 | 1,652
Net income (loss) | (2,358) |  |  | (1,743) |  |  | (6,737) | (5,297)
Post-retirement benefit plans | Reclassification out of Accumulated Other Comprehensive Income |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |
Income before income tax | (3,119) |  |  | (2,316) |  |  | (8,923) | (6,949)
Prior service credit | Reclassification out of Accumulated Other Comprehensive Income |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |
Cost of sales | 137 |  |  | 70 |  |  | 377 | 210
Actuarial losses | Reclassification out of Accumulated Other Comprehensive Income |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |
Other income (deductions), net | (2,730) |  |  | (2,386) |  |  | (8,774) | (7,159)
Prior service cost write-off | Reclassification out of Accumulated Other Comprehensive Income |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |
Other income (deductions), net | (526) |  |  |  |  |  | (526) |
Derivatives | Reclassification out of Accumulated Other Comprehensive Income |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |
Income before income tax | (790) |  |  | (438) |  |  | (2,444) | 108
Income taxes | 194 |  |  | 108 |  |  | 599 | (26)
Net income (loss) | (596) |  |  | (330) |  |  | (1,845) | 82
Derivatives | Interest rate swap contracts | Reclassification out of Accumulated Other Comprehensive Income |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |
Interest expense | $ 790 |  |  | $ (438) |  |  | $ 2,444 | $ 108

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