GOODWILL AND INTANGIBLE ASSETS (Schedule of Goodwill) (Details) $ in Thousands	9 Months Ended
	Jun. 30, 2017 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 71,319
Accumulated Impairment, beginning balance	(40,394)
Goodwill, net	30,925	[1]
Goodwill attributable to fiscal 2017 acquisitions	7,657
Goodwill, ending balance	78,976
Accumulated Impairment, ending balance	(40,394)
Goodwill, net	$ 38,582

[1] The condensed consolidated balance sheet as of September 30, 2016 has been prepared using information from the audited financial statements at that date.