Condensed Consolidated Statements of Operations - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Condensed Consolidated Statements of Operations [Abstract]
Net sales	$ 4,634,552	$ 3,987,452	$ 13,415,506	$ 14,125,537
Cost of goods sold	2,671,336	2,569,900	8,320,759	9,453,860
Gross profit	1,963,216	1,417,552	5,094,747	4,671,677
Selling, general and administrative expenses	1,566,430	2,271,615	4,576,521	5,393,211
Income (loss) from operations	396,786	(854,063)	518,226	(721,534)
Other income	6,415	378,805	362,389	885,505
Interest income	3,578	1,139	7,837	1,748
Income (loss) before income tax provision	406,779	(474,119)	888,452	165,719
Income tax provision	3,575	49	5,638	4,068
Net income (loss)	$ 403,204	$ (474,168)	$ 882,814	$ 161,651
Income (loss) per common share:
Basic (in dollars per share)	$ 0.04	$ (0.06)	$ 0.10	$ 0.02
Diluted (in dollars per share)	$ 0.04	$ (0.06)	$ 0.09	$ 0.02
Weighted-average number of shares:
Basic (in shares)	9,147,795	8,100,730	9,044,532	7,633,722
Diluted (in shares)	9,888,083	8,100,730	10,024,473	9,188,002