Consolidated Condensed Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Net sales	$ 25,330	$ 27,777	$ 75,274	$ 84,521
Cost of goods sold	22,040	23,628	65,317	70,771
Gross profit	3,290	4,149	9,957	13,750
Selling, general and administrative expenses	2,912	2,864	10,336	10,393
Amortization of intangible assets	248	408	765	1,224
Loss on disposal of operating assets	0	55	0	98
Gain on insurance recoveries	0	(1,683)	(2,495)	(2,683)
Operating income	130	2,505	1,351	4,718
Interest expense	143	183	478	697
Foreign currency exchange loss, net	1	12	22	12
Other loss (income), net	(232)	27	(129)	(58)
Income before income tax expense (benefit)	218	2,283	980	4,067
Income tax expense (benefit)	(36)	33	(776)	(101)
Net income	$ 254	$ 2,250	$ 1,756	$ 4,168
Net income per share
Basic (in dollars per share)	$ 0.04	$ 0.40	$ 0.31	$ 0.74
Diluted (in dollars per share)	$ 0.04	$ 0.39	$ 0.29	$ 0.72
Weighted-average number of common shares (basic) (in shares)	5,779	5,676	5,753	5,656
Weighted-average number of common shares (diluted) (in shares)	6,006	5,807	5,960	5,768