OTHER COMPREHENSIVE INCOME (LOSS)-AOCI (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	$ (92,553)	$ (81,241)
Foreign currency translation adjustments [Member]
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	(56,373)	(42,894)
Pension and other defined benefit plans [Member]
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	(36,799)	(37,343)
Gain on cash flow hedge [Member]
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	$ 619	$ (1,004)