OTHER COMPREHENSIVE INCOME (LOSS)-AOCI (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Sep. 30, 2015
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	$ (82,746)	$ (91,188)
Foreign currency translation adjustments [Member]
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	(49,844)	(60,178)
Pension and other defined benefit plans [Member]
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	(30,921)	(31,692)
Gain on cash flow hedge [Member]
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	$ (1,981)	$ 682