Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Sales	$ 23,759	$ 12,667	$ 42,449	$ 25,416
Cost of sales	18,001	9,486	32,060	18,606
Gross profit	5,758	3,181	10,389	6,810
Operating expenses	2,753	2,167	5,253	4,224
Selling, general and administrative expenses	3,850	3,757	7,538	6,972
Depreciation and amortization expense	318	304	662	585
Loss (gain) on disposal of assets	2	0	2	(10)
Loss from operations	(1,165)	(3,047)	(3,066)	(4,961)
Other income (expense):
Interest income	0	33	0	81
Other expense, net	(168)	(8)	(240)	(27)
Interest expense	(61)	(42)	(116)	(110)
Other income (expense), net	(229)	(17)	(356)	(56)
Loss before income taxes	(1,394)	(3,064)	(3,422)	(5,017)
Income tax expense	0	0	0	0
Net loss	$ (1,394)	$ (3,064)	$ (3,422)	$ (5,017)
Loss per share:
Basic (in dollars per share)	$ (0.11)	$ (0.25)	$ (0.27)	$ (0.41)
Diluted (in dollars per share)	$ (0.11)	$ (0.25)	$ (0.27)	$ (0.41)
Shares used in per share calculation:
Basic (in shares)	13,071,053	12,416,594	12,875,055	12,281,721
Diluted (in shares)	13,071,053	12,416,594	12,875,055	12,281,721