CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Sales:
Total sales	$ 14,088	$ 16,883	$ 25,476	$ 33,741
Cost of sales:
Total cost of sales	9,720	12,400	17,730	25,227
Gross profit	4,368	4,483	7,746	8,514
Operating expenses:
Engineering and development	762	716	1,491	1,388
Selling, general and administrative	3,727	3,910	6,913	7,671
Total operating expenses	4,489	4,626	8,404	9,059
Operating loss	(121)	(143)	(658)	(545)
Other income (expense):
Foreign exchange (loss) gain	(154)	479	(621)	144
Interest expense	(75)	(55)	(113)	(112)
Interest income	133	163	231	336
Gain on forgiveness of debt			2,196
Other income (expense)	93	(7)	102	4
Total other income (expense)	(3)	580	1,795	372
(Loss) income before income taxes	(124)	437	1,137	(173)
Income tax expense	723	1,169	833	1,099
Net (loss) income	(847)	(732)	304	(1,272)
Net (loss) income attributable to common stockholders	$ (847)	$ (732)	$ 289	$ (1,272)
Net (loss) income per share – basic	$ (0.20)	$ (0.18)	$ 0.07	$ (0.32)
Weighted average shares outstanding – basic (in Shares)	4,158	4,036	4,117	3,999
Net (loss) income per share – diluted	$ (0.20)	$ (0.18)	$ 0.07	$ (0.32)
Weighted average shares outstanding – diluted (in Shares)	4,158	4,036	4,202	3,999
Product
Sales:
Total sales	$ 10,976	$ 13,146	$ 19,384	$ 26,705
Cost of sales:
Total cost of sales	8,553	11,033	15,502	22,637
Service
Sales:
Total sales	3,112	3,737	6,092	7,036
Cost of sales:
Total cost of sales	$ 1,167	$ 1,367	$ 2,228	$ 2,590