Condensed Consolidated Statements of Operations - USD ($)	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Condensed Consolidated Statements of Operations [Abstract]
Net sales	$ 5,208,295	$ 5,410,762
Cost of goods sold	3,572,067	4,063,308
Gross profit	1,636,228	1,347,454
Selling, general and administrative expenses	1,505,772	1,664,600
Income (loss) from operations	130,456	(317,146)
Interest (expense) income	(2,051)	6,397
Income (loss) before income tax provision	128,405	(310,749)
Income tax provision	1,477
Net income (loss)	$ 126,928	$ (310,749)
Income (loss) per common share:
Basic (in dollars per share)	$ 0.02	$ (0.04)
Diluted (in dollars per share)	$ 0.02	$ (0.04)
Weighted-average number of shares:
Basic (in shares)	7,404,831	7,404,831
Diluted (in shares)	7,408,685	7,404,831