DEFINED BENEFIT PENSION EXPENSE (Details) - Summary of Defined Benefit Pension Expense - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Interest cost	$ 1,402	$ 2,080
Expected return on plan assets	(2,736)	(2,916)
Amortization:
Prior service cost	4	4
Recognized actuarial loss	832	590
Net periodic expense (income)	$ (498)	$ (242)