CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Net Sales:
Total net sales	$ 10,739,516	$ 7,340,454	$ 20,047,579	$ 13,856,709
Cost of sales:
Total cost of sales	5,157,154	2,600,303	8,942,055	5,392,755
Gross profit	5,582,362	4,740,151	11,105,524	8,463,954
Operating expenses:
Research and development	1,031,119	866,198	1,932,263	1,536,643
Selling, general and administrative	2,908,193	2,446,635	5,915,012	4,708,498
Total operating expenses	3,939,312	3,312,833	7,847,275	6,245,141
Operating income	1,643,050	1,427,318	3,258,249	2,218,813
Interest expense	(171,470)		(531,483)
Interest income	36,200	130,951	115,679	246,843
Other income	26,472	23,258	44,171	41,455
Income before income taxes	1,534,252	1,581,527	2,886,616	2,507,111
Income tax expense	325,936	310,424	620,950	537,357
Net income	$ 1,208,316	$ 1,271,103	$ 2,265,666	$ 1,969,754
Net income per common share:
Basic (in dollars per share)	$ 0.07	$ 0.07	$ 0.13	$ 0.11
Diluted (in dollars per share)	$ 0.07	$ 0.07	$ 0.13	$ 0.11
Weighted average shares outstanding:
Basic (in shares)	17,456,120	17,352,340	17,453,741	17,334,553
Diluted(in shares)	17,487,527	17,354,030	17,481,217	17,340,104
Product
Net Sales:
Total net sales	$ 4,895,589	$ 5,945,151	$ 9,319,697	$ 11,035,358
Cost of sales:
Total cost of sales	2,347,695	2,202,750	4,129,040	4,618,694
Customer Service
Net Sales:
Total net sales	5,098,222	1,395,303	9,325,469	2,454,452
Cost of sales:
Total cost of sales	2,462,260	$ 397,553	4,189,221	716,655
Engineering development contracts
Net Sales:
Total net sales	745,705		1,402,413	366,899
Cost of sales:
Total cost of sales	$ 347,199		$ 623,794	$ 57,406