Consolidated Condensed Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Net sales	$ 27,392	$ 27,794	$ 56,458	$ 52,044
Cost of goods sold	25,304	25,265	51,633	47,487
Gross profit	2,088	2,529	4,825	4,557
Selling, general and administrative expenses	3,784	3,861	7,894	7,933
Amortization of intangible assets	413	433	828	858
Gain on disposal or impairment of operating assets	0	(29)	(282)	(1,429)
Gain on insurance proceeds received for damaged property	(1,164)	0	(1,164)	0
Operating loss	(945)	(1,736)	(2,451)	(2,805)
Interest income	(1)	(14)	(2)	(29)
Interest expense	315	436	607	886
Foreign currency exchange gain, net	(1)	(43)	(1)	(80)
Other income, net	(34)	(80)	(35)	(396)
Loss before income tax expense (benefit)	(1,224)	(2,035)	(3,020)	(3,186)
Income tax expense (benefit)	34	3	(480)	(237)
Net loss	$ (1,258)	$ (2,038)	$ (2,540)	$ (2,949)
Net loss per share
Basic (in dollars per share)	$ (0.23)	$ (0.37)	$ (0.46)	$ (0.53)
Diluted (in dollars per share)	$ (0.23)	$ (0.37)	$ (0.46)	$ (0.53)
Weighted-average number of common shares (basic) (in shares)	5,561	5,535	5,548	5,519
Weighted-average number of common shares (diluted) (in shares)	5,561	5,535	5,548	5,519