Condensed Consolidated Statements of Operations - USD ($)	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Net sales	$ 16,389,549	$ 17,065,836
Cost of sales	11,235,542	11,518,611
Gross profit	5,154,007	5,547,225
Selling, general, and administrative expenses	4,924,692	5,496,623
Operating income	229,315	50,602
Other income (expense):
Interest expense, net	(130,992)	(120,842)
Other income, net	515	385,841
Net other (expense) income	(130,477)	264,999
Income before income taxes	98,838	315,601
Income tax (provision) benefit	0	0
Net income	98,838	315,601
Convertible preferred stock dividend, in common stock	(166,904)	(186,637)
Net (loss) income attributable to common stockholders	$ (68,066)	$ 128,964
Net (loss) income per common share
Basic	$ (0.01)	$ 0.02
Diluted	$ (0.01)	$ 0.02
Weighted-average common shares outstanding:
Basic	8,576,961	8,160,431
Diluted	8,576,961	8,400,824