Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Total sales	$ 12,667	$ 11,959	$ 25,416	$ 25,921
Cost of sales	9,486	12,398	18,606	22,768
Gross profit	3,181	(439)	6,810	3,153
Operating expenses	2,167	2,143	4,224	4,278
Selling, general and administrative expenses	3,757	2,899	6,972	5,676
Impairment of intangibles including goodwill	0	8,714	0	8,714
Depreciation and amortization expense	304	508	585	955
Gain on disposal of assets	0	(24)	(10)	(28)
Loss from operations	(3,047)	(14,679)	(4,961)	(16,442)
Other income (expense):
Interest income	33	86	81	175
Income from equity method investment	0	19	0	41
Other expense, net	(8)	(28)	(27)	(86)
Interest expense	(42)	(59)	(110)	(82)
Total other income (expense), net	(17)	18	(56)	48
Loss before income taxes	(3,064)	(14,661)	(5,017)	(16,394)
Benefit for income taxes	0	0	0	(15)
Net loss	$ (3,064)	$ (14,661)	$ (5,017)	$ (16,379)
Basic and diluted loss per share:
Net loss (in dollars per share)	$ (0.25)	$ (1.41)	$ (0.41)	$ (1.58)
Shares used in per share calculation:
Basic and diluted (in shares)	12,416,594	10,423,514	12,281,721	10,392,404