Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Net sales	$ 113,573	$ 112,454
Cost of goods sold	93,611	101,817
Gross profit	19,962	10,637
Selling, general and administrative expenses	14,022	15,274
Goodwill impairment	0	8,294
Amortization of intangible assets	1,497	1,648
Loss (gain) on disposal or impairment of operating assets	174	(282)
Gain on insurance recoveries	(5,874)	(7,253)
Operating income (loss)	10,143	(7,044)
Interest expense, net	886	1,053
Foreign currency exchange loss (gain), net	51	(7)
Other expense, net	226	117
Income (loss) before income tax benefit	8,980	(8,207)
Income tax benefit	(211)	(701)
Net income (loss)	$ 9,191	$ (7,506)
Net income (loss) per share:
Basic (in dollars per share)	$ 1.62	$ (1.35)
Net income (loss) per share – diluted (in dollars per share)	$ 1.59	$ (1.35)
Weighted-average number of common shares (basic) (in shares)	5,661	5,566
Weighted-average common shares outstanding (diluted) (in shares)	5,791	5,566