Annual report pursuant to Section 13 and 15(d)

ACCUMULATED OTHER COMPREHENSIVE INCOME - Reclassifications out of AOCI (Details)

v3.19.3
ACCUMULATED OTHER COMPREHENSIVE INCOME - Reclassifications out of AOCI (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Cost of goods and services sold $ (994,810) $ (1,018,359) $ (947,820)
Interest expense (40,962) (37,427) (26,371)
(Loss) income before income taxes (38,083) 97,993 96,287
Income tax (provision) benefit (806) 9,118 (22,354)
Net (loss) income (38,889) 107,111 73,933
Prior service (cost) credit | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Cost of goods and services sold 381 333 376
Actuarial losses | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Cost of goods and services sold (4,245) (7,018) (10,034)
Postretirement Benefit Plans | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
(Loss) income before income taxes (3,864) (6,685) (9,658)
Income tax (provision) benefit 947 1,638 3,767
Net (loss) income (2,917) (5,047) (5,891)
Derivatives | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Interest expense 3,181 1,380 1,752
(Loss) income before income taxes 3,181 1,380 1,752
Income tax (provision) benefit (779) (338) (683)
Net (loss) income $ 2,402 $ 1,042 $ 1,069