Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Income - Reclassifications out of AOCI (Details)

v3.21.4
Accumulated Other Comprehensive Income - Reclassifications out of AOCI (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Cost of sales $ (306,942) $ (261,159)
Other income (deductions), net (31,713) (1,734)
Income before income tax (26,438) 1,988
Income taxes 6,628 (3,980)
Net loss (19,810) (1,992)
Post-retirement benefit plans    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Net loss (23,415) (2,124)
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 (31,013) (2,913)
Income taxes 7,598 789
Prior service credit | Reclassification out of Accumulated Other Comprehensive Income    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Cost of sales 44 108
Actuarial losses | Reclassification out of Accumulated Other Comprehensive Income    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Other income (deductions), net (201) (3,021)
Settlement loss | Reclassification out of Accumulated Other Comprehensive Income    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Other income (deductions), net (30,856)  
Derivatives | Reclassification out of Accumulated Other Comprehensive Income    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Income before income tax (801) (903)
Income taxes 195 221
Net loss (606) (682)
Derivatives | Interest rate swap contracts | Reclassification out of Accumulated Other Comprehensive Income    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Interest expense $ (801) $ (903)