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GOODWILL AND INTANGIBLE ASSETS (Summary of Goodwill) (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Sep. 30, 2017
Goodwill [Line Items]    
Goodwill $ 57,478 $ 56,318
Capital Equipment [Member]    
Goodwill [Line Items]    
Goodwill 30,894 29,975
Aftermarket Products and Services [Member]    
Goodwill [Line Items]    
Goodwill $ 26,584 $ 26,343