CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Sales:
Total sales	$ 13,706	$ 13,269	$ 29,081	$ 31,613
Cost of sales:
Total cost of sales	7,228	8,279	18,508	20,806
Gross profit	6,478	4,990	10,573	10,807
Operating expenses:
Engineering and development	726	858	1,426	1,694
Selling, general and administrative	4,518	3,895	8,256	7,512
Total operating expenses	5,244	4,753	9,682	9,206
Operating income	1,234	237	891	1,601
Other income (expense):
Foreign exchange gain (loss)	32	(115)	(142)	(616)
Interest expense	(46)	(62)	(95)	(126)
Interest income	478	325	974	586
Other income, net	25	7	35	41
Total other income (expense), net	489	155	772	(115)
Income before income taxes	1,723	392	1,663	1,486
Income tax expense	135	71	148	204
Net income	1,588	321	1,515	1,282
Net income attributable to common shareholders	$ 1,482	$ 302	$ 1,417	$ 1,205
Net income per common share - basic	$ 0.16	$ 0.03	$ 0.16	$ 0.14
Net income per common share - diluted	$ 0.16	$ 0.03	$ 0.15	$ 0.14
Weighted average common shares outstanding - basic	9,070	8,782	8,967	8,683
Weighted average common shares outstanding - diluted	9,455	8,924	9,366	8,789
Product
Sales:
Total sales	$ 8,458	$ 8,988	$ 19,865	$ 23,209
Cost of sales:
Total cost of sales	5,416	6,580	14,644	17,351
Service
Sales:
Total sales	5,248	4,281	9,216	8,404
Cost of sales:
Total cost of sales	$ 1,812	$ 1,699	$ 3,864	$ 3,455