Annual report pursuant to Section 13 and 15(d)

PENSION AND OTHER POSTRETIREMENT PLANS - Amounts of AOCI Expected to be Recognized in Net Periodic Benefit Costs (Details)

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PENSION AND OTHER POSTRETIREMENT PLANS - Amounts of AOCI Expected to be Recognized in Net Periodic Benefit Costs (Details)
$ in Thousands
Sep. 30, 2018
USD ($)
Pension  
Defined Benefit Plan Disclosure [Line Items]  
Net actuarial loss $ 4,246
Prior service cost (186)
Other Postretirement  
Defined Benefit Plan Disclosure [Line Items]  
Net actuarial loss (59)
Prior service cost $ (195)