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OTHER COMPREHENSIVE INCOME (LOSS) (Details) - Summary of Amounts Reclassified from Accumulated Other Comprehensive Income - USD ($)
$ in Thousands
3 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Other Comprehensive Income (Loss), Net of Tax [Abstract]    
Pension amortization $ (836) $ (594)
Cash flow hedges (649) 405
Total gain (loss) (1,485) (189)
Tax benefit (expense) (97) (87)
Amounts reclassified from accumulated other comprehensive income (loss) $ (1,388) $ (102)