PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$ 10,702	$ 10,349
Selling, general and administrative expense [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$ 3,742	$ 3,060