Consolidated Condensed Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Net sales	$ 27,794	$ 31,302	$ 52,044	$ 62,776
Cost of goods sold	25,265	27,643	47,487	54,948
Gross profit	2,529	3,659	4,557	7,828
Selling, general and administrative expenses	3,861	4,396	7,933	9,699
Amortization of intangible assets	433	573	858	1,165
Gain on disposal of operating assets	(29)	0	(1,429)	(6)
Operating loss	(1,736)	(1,310)	(2,805)	(3,030)
Interest income	(14)	(16)	(29)	(30)
Interest expense	436	541	886	1,219
Foreign currency exchange (gain) loss, net	(43)	12	(80)	17
Other income, net	(80)	(107)	(396)	(214)
Loss from operations before income tax expense (benefit)	(2,035)	(1,740)	(3,186)	(4,022)
Income tax expense (benefit)	3	(83)	(237)	244
Net loss	$ (2,038)	$ (1,657)	$ (2,949)	$ (4,266)
Net loss per share
Basic (in dollars per share)	$ (0.37)	$ (0.30)	$ (0.53)	$ (0.78)
Diluted (in dollars per share)	$ (0.37)	$ (0.30)	$ (0.53)	$ (0.78)
Weighted-average number of common shares (basic) (in shares)			5,519	5,473
Weighted-average common shares outstanding (basic and diluted) (in shares)	5,535	5,479	5,519	5,473
Weighted-average number of common shares (diluted) (in shares)	5,535	5,479	5,519	5,473