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GOODWILL AND INTANGIBLE ASSETS (Estimated annual amortization expense) (Details)
$ in Thousands
Sep. 30, 2017
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
Fiscal 2018 $ 7,892
Fiscal 2019 7,892
Fiscal 2020 7,892
Fiscal 2021 5,684
Fiscal 2022 and thereafter 32,956
Total amortization expense $ 62,316