CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Sales:
Total sales	$ 13,269	$ 11,981	$ 31,613	$ 24,350
Cost of sales:
Total cost of sales	8,279	7,781	20,806	16,536
Gross profit	4,990	4,200	10,807	7,814
Operating expenses:
Engineering and development	858	717	1,694	1,344
Selling, general and administrative	3,895	3,507	7,512	6,890
Total operating expenses	4,753	4,224	9,206	8,234
Operating income (loss)	237	(24)	1,601	(420)
Other income (expense):
Foreign exchange loss	(115)	176	(616)	159
Interest expense	(62)	(101)	(126)	(206)
Interest income	325	126	586	271
Other (expense) income, net	7	(16)	41	3
Total other (expense) income, net	155	185	(115)	227
Income (loss) before income taxes	392	161	1,486	(193)
Income tax expense	71	5	204	17
Net income (loss)	321	156	1,282	(210)
Net income (loss) attributable to common shareholders	$ 302	$ 148	$ 1,205	$ (210)
Net income (loss) per common share - basic	$ 0.07	$ 0.03	$ 0.28	$ (0.05)
Weighted average common shares outstanding - basic	4,391	4,274	4,342	4,237
Net income (loss) per common share - diluted	$ 0.07	$ 0.03	$ 0.27	$ (0.05)
Weighted average common shares outstanding net income - diluted	4,462	4,285	4,395	4,237
Product
Sales:
Total sales	$ 8,988	$ 8,217	$ 23,209	$ 16,937
Cost of sales:
Total cost of sales	6,580	6,265	17,351	13,542
Service
Sales:
Total sales	4,281	3,764	8,404	7,413
Cost of sales:
Total cost of sales	$ 1,699	$ 1,516	$ 3,455	$ 2,994