Condensed Consolidated Statements of Income - USD ($)	3 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Condensed Consolidated Statements of Income
Net sales	$ 8,162,734	$ 7,397,196
Cost of sales	5,368,046	4,886,367
Gross profit	2,794,688	2,510,829
Selling, general, and administrative expenses	2,764,357	2,355,655
Research and development expenses	278,885	265,361
Operating loss	(248,554)	(110,187)
Other income (expense):
Interest income	222	614
Interest expense	(59,542)	(80,243)
Other income, net	22,241	2,604
Net other expense	(37,079)	(77,025)
Loss before income taxes	(285,633)	(187,212)
Income tax (provision) benefit		5,650
Net loss	(285,633)	(181,562)
8% Convertible preferred stock dividend	(88,985)	(80,500)
Net loss attributable to common stockholders	$ (374,618)	$ (262,062)
Basic and diluted net loss per common share	$ (0.13)	$ (0.10)
Weighted-average common shares outstanding:
Basic	2,841,486	2,643,297
Diluted	2,841,486	2,643,297