Annual report pursuant to Section 13 and 15(d)

PENSION AND OTHER POSTRETIREMENT PLANS - Contributions During Fiscal Year (Details)

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PENSION AND OTHER POSTRETIREMENT PLANS - Contributions During Fiscal Year (Details)
$ in Thousands
 12 Months Ended
Sep. 30, 2018
USD ($)
Principal retirement plan  
Defined Benefit Plan Disclosure [Line Items]  
Pension $ 10,000
Other Postretirement 0
Supplemental retirement plan  
Defined Benefit Plan Disclosure [Line Items]  
Pension 749
Other Postretirement 0
Other retirement plans  
Defined Benefit Plan Disclosure [Line Items]  
Pension 444
Other Postretirement 0
Other Postretirement  
Defined Benefit Plan Disclosure [Line Items]  
Pension 0
Other Postretirement $ 1,549