EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net Income (Loss) Attributable to Parent [Abstract]
Net income (loss)	$ (3,215)	$ 4,894	$ (4,343)	$ 10,002
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted average basic shares (in shares)	11,463	11,397	11,449	11,387
Dilutive effect of restricted stock units (in shares)	0	76	0	48
Weighted average diluted shares with assumed conversions (in shares)	11,463	11,473	11,449	11,435
Basic (in dollars per share)	$ (0.28)	$ 0.43	$ (0.38)	$ 0.88
Diluted (in dollars per share)	$ (0.28)	$ 0.43	$ (0.38)	$ 0.87