COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2017	Sep. 30, 2016
Warranty reserve activity [Roll Forward]
Balance as of beginning of period	$ 243
Reserve for product warranty during the reporting period	389
Settlement of warranty	(383)
Balance as of end of period	$ 249
Postretirement Obligations in Foreign Jurisdictions [Abstract]
Expected term for benefit payments of all unfunded plans	10 years
2017 to 2026	$ 3,888
Purchase obligations [Abstract]
Purchase obligation, due in 2017	1,500
Purchase obligation, due in 2018	1,500
Purchase obligation, due in 2019	1,500
Purchase obligation	2,920
Current portion of long-term contract liability	1,500	$ 1,500
Long-term contract liability	1,420
Contractual obligation	$ 9,631