DETAIL OF SELECTED BALANCE SHEET ACCOUNTS (Activity in Allowance for Doubtful Accounts) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance at beginning of period	$ 310	$ 976	$ 811	$ 746
Bad debt expense (recovery)	(129)	(118)	(226)	221
Uncollectible accounts written off, net of recoveries	(92)	16	(493)	(98)
Change due to foreign currency translation	1	(3)	(2)	2
Balance at end of period	$ 90	$ 871	$ 90	$ 871