CHANGES IN OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Component of accumulated other comprehensive loss [Roll Forward]
Balance at the beginning of the period	$ 15,712
Other comprehensive loss	(2,416)	$ (2,175)
Balance at the end of the period	21,739	15,712
Accumulated Other Comprehensive Loss [Member]
Component of accumulated other comprehensive loss [Roll Forward]
Balance at the beginning of the period	(11,004)	(8,829)
Balance at the end of the period	(13,420)	(11,004)
Foreign Currency Items [Member]
Component of accumulated other comprehensive loss [Roll Forward]
Balance at the beginning of the period	(1,274)	(956)
Other comprehensive loss	(996)	(318)
Balance at the end of the period	(2,270)	(1,274)
Defined Benefit Pension Plans [Member]
Component of accumulated other comprehensive loss [Roll Forward]
Balance at the beginning of the period	(9,730)	(7,873)
Other comprehensive loss	(1,420)	(1,857)
Balance at the end of the period	$ (11,150)	$ (9,730)