RESTRUCTURING AND SEPARATION COSTS (Details) - USD ($)	3 Months Ended			9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2017	Jun. 30, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 0	$ 647,000		$ 840,000	$ 7,703,000
Separation Costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs		$ 400,000
Contract Termination
Restructuring Cost and Reserve [Line Items]
Restructuring costs			$ 300,000