Consolidated Statements of Income - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Consolidated Statements of Income
Net sales	$ 7,408,990	$ 6,690,705	$ 22,281,107	$ 21,210,219
Cost of sales	4,922,570	4,498,818	14,606,877	13,987,149
Gross profit	2,486,420	2,191,887	7,674,230	7,223,070
Selling, general, and administrative expenses	2,620,238	2,217,397	7,445,023	6,848,746
Research and development expenses	249,995	236,461	769,223	687,961
Operating loss	(383,813)	(261,971)	(540,016)	(313,637)
Other income (expense):
Interest income	175	847	2,658	4,448
Interest expense	(71,690)	(87,127)	(229,207)	(215,156)
Other income, net	4,640	3,696	9,635	10,151
Net other expense	(66,875)	(82,584)	(216,914)	(200,557)
Loss before income taxes	(450,688)	(344,555)	(756,930)	(514,194)
Income tax (provision) benefit		136,542		213,562
Net loss	(450,688)	(208,013)	(756,930)	(300,632)
8% Convertible preferred stock dividend	(80,500)		(241,500)
Net loss attributable to common stockholders	$ (531,188)	$ (208,013)	$ (998,430)	$ (300,632)
Basic and diluted net loss per common share	$ (0.19)	$ (0.08)	$ (0.37)	$ (0.12)
Weighted-average common shares outstanding:
Basic	2,731,282	2,520,389	2,681,493	2,520,389
Diluted	2,731,282	2,520,389	2,681,493	2,520,389