Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Sales	$ 12,749	$ 13,962
Cost of sales	9,120	10,370
Gross profit	3,629	3,592
Operating expenses	2,047	2,131
Selling, general and administrative expenses	3,215	2,776
Depreciation and amortization expense	281	448
Loss from operations	(1,914)	(1,763)
Other income (expense):
Interest income	48	89
Income from equity method investment	0	22
Other expense	(19)	(57)
Interest expense	(68)	(24)
Total other income (expense), net	(39)	30
Loss before income taxes	(1,953)	(1,733)
Benefit for income taxes	0	(15)
Net loss	$ (1,953)	$ (1,718)
Basic and diluted loss per share:
Net loss (in dollars per share)	$ (0.16)	$ (0.17)
Shares used in per share calculation:
Basic and diluted (in shares)	12,149,778	10,361,292