Quarterly report pursuant to Section 13 or 15(d)

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

v3.22.1
Accumulated Other Comprehensive Income - Reclassifications out of AOCI (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
Dec. 31, 2020
Mar. 31, 2022
Mar. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Cost of sales $ (320,459)   $ (276,143)   $ (627,401) $ (537,302)
Other income (deductions), net 562   (2,584)   (31,151) (4,318)
Income before income tax 1,341   6,124   (25,097) 8,112
Income taxes (3,277)   (972)   3,351 (4,952)
Net (loss) income (1,936) $ (19,810) 5,152 $ (1,992) (21,746) 3,160
Post-retirement benefit plans            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Income taxes (16)   636      
Net (loss) income 50   (2,255)   (23,365) (4,379)
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 66   (2,891)   (30,947) (5,804)
Income taxes         7,582 1,425
Prior service credit | Reclassification out of Accumulated Other Comprehensive Income            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Cost of sales 157   132   201 240
Actuarial losses | Reclassification out of Accumulated Other Comprehensive Income            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Other income (deductions), net (91)   (3,023)   (292) (6,044)
Settlement loss | Reclassification out of Accumulated Other Comprehensive Income            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Other income (deductions), net 0       (30,856)  
Derivatives | Reclassification out of Accumulated Other Comprehensive Income            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Income before income tax (735)   (751)   (1,536) (1,654)
Income taxes 181   184   376 405
Net (loss) income (554)   (567)   (1,160) (1,249)
Derivatives | Interest rate swap contracts | Reclassification out of Accumulated Other Comprehensive Income            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Interest expense $ (735)   $ (751)   $ (1,536) $ (1,654)