CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Net Sales:
Total net sales	$ 6,695,778	$ 4,869,652
Cost of sales:
Total cost of sales	2,728,057	2,303,829
Gross profit	3,967,721	2,565,823
Operating expenses:
Research and development	736,525	600,298
Selling, general and administrative	1,806,982	1,733,154
Total operating expenses	2,543,507	2,333,452
Operating income	1,424,214	232,371
Interest income	96	879
Other income	16,238	16,392
Income before income taxes	1,440,548	249,642
Income tax expense	307,490	9,497
Net income	$ 1,133,058	$ 240,145
Net income per common share:
Basic (in dollars per share)	$ 0.07	$ 0.01
Diluted (in dollars per share)	$ 0.07	$ 0.01
Weighted average shares outstanding:
Basic (in shares)	17,246,372	17,214,384
Diluted (in shares)	17,246,372	17,216,287
Product
Net Sales:
Total net sales	$ 6,695,778	$ 4,802,835
Cost of sales:
Total cost of sales	$ 2,728,057	2,294,294
Engineering development contracts
Net Sales:
Total net sales		66,817
Cost of sales:
Total cost of sales		$ 9,535