Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Net sales	$ 99,591	$ 113,573
Cost of goods sold	88,386	93,611
Gross profit	11,205	19,962
Selling, general and administrative expenses	13,484	14,022
Amortization of intangible assets	1,011	1,497
Loss on disposal or impairment of operating assets	209	174
Gain on insurance recoveries	(2,397)	(5,874)
Operating income (loss)	(1,102)	10,143
Interest expense, net	638	886
Foreign currency exchange loss, net	23	51
Other expense, net	202	226
Income (loss) before income tax benefit	(1,965)	8,980
Income tax benefit	(1,222)	(211)
Net income (loss)	$ (743)	$ 9,191
Net income (loss) per share:
Basic (in dollars per share)	$ (0.13)	$ 1.62
Diluted (in dollars per share)	$ (0.13)	$ 1.59
Weighted-average number of common shares (basic) (in shares)	5,759	5,661
Weighted-average common shares outstanding (diluted) (in shares)	5,759	5,791