IMPAIRMENT OF GOODWILL AND INTANGIBLE ASSETS (Narrative) (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2014 USD ($)	Sep. 30, 2017 USD ($) segment	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)
Impairment of Goodwill and Intangible Assets [Abstract]
Number of reportable segments | segment		1
Fair Value of Long Lived Assets	$ 3,000
Pre-tax Impairment Charge	10,300	$ 0	$ 0
Goodwill		6,685	6,685	$ 6,685	$ 28,383
Goodwill, Impairment Loss	$ 21,700			$ 21,698