DISCONTINUED OPERATIONS - Restructuring Charges (Details) - USD ($)	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0	$ 5,900,000	$ 0
Workforce Reduction [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		3,337,000
Facilities & Exit Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		659,000
Other Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		1,073,000
Non-cash Facility and Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 831,000