Consolidated Condensed Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Net sales	$ 30,167	$ 31,004	$ 92,942	$ 87,240
Cost of goods sold	26,599	28,009	81,546	78,574
Gross profit	3,568	2,995	11,396	8,666
Selling, general and administrative expenses	3,918	4,157	13,617	12,907
Asset impairment	4,366	0	4,366	0
Amortization of intangible assets	579	633	1,744	1,961
(Gain) loss on disposal of operating assets	3	0	(3)	32
Operating loss	(5,298)	(1,795)	(8,328)	(6,234)
Interest income	(12)	(9)	(42)	(41)
Interest expense	464	428	1,682	1,273
Foreign currency exchange loss (gain), net	(6)	(8)	11	27
Other income, net	(110)	(107)	(324)	(322)
Loss from operations before income tax expense (benefit)	(5,634)	(2,099)	(9,655)	(7,171)
Income tax expense (benefit)	568	(1,049)	812	(3,224)
Net loss	$ (6,202)	$ (1,050)	$ (10,467)	$ (3,947)
Net loss per share
Basic (in dollars per share)	$ (1.13)	$ (0.19)	$ (1.91)	$ (0.72)
Diluted (in dollars per share)	$ (1.13)	$ (0.19)	$ (1.91)	$ (0.72)
Weighted-average number of common shares (basic) (in shares)	5,499	5,466	5,480	5,460
Weighted-average number of common shares (diluted) (in shares)	5,499	5,466	5,480	5,460