Condensed Consolidated Statements of Income - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Condensed Consolidated Statements of Income
Net sales	$ 8,713,355	$ 7,474,921	$ 16,876,089	$ 14,872,118
Cost of sales	5,640,048	4,797,939	11,008,094	9,684,307
Gross profit	3,073,307	2,676,982	5,867,995	5,187,811
Selling, general, and administrative expenses	2,851,236	2,469,131	5,615,594	4,824,785
Research and development expenses	309,476	253,868	588,360	519,229
Operating loss	(87,405)	(46,017)	(335,959)	(156,203)
Other income (expense):
Interest income	142	1,869	364	2,482
Interest expense	(63,550)	(77,274)	(123,092)	(157,517)
Other income, net	55,494	2,391	77,735	4,995
Net other expense	(7,914)	(73,014)	(44,993)	(150,040)
Loss before income taxes	(95,319)	(119,031)	(380,952)	(306,243)
Income tax (provision) benefit		(5,650)
Net loss	(95,319)	(124,681)	(380,952)	(306,243)
Deemed dividend on 8% convertible preferred stock	(375,858)		(375,858)
8% Convertible preferred stock dividend	(88,792)	(80,500)	(177,777)	(161,000)
Net loss attributable to common stockholders	$ (559,969)	$ (205,181)	$ (934,587)	$ (467,243)
Basic and diluted net loss per common share	$ (0.19)	$ (0.08)	$ (0.33)	$ (0.18)
Weighted-average common shares outstanding:
Basic	2,881,111	2,670,124	2,861,299	2,656,711
Diluted	2,881,111	2,670,124	2,861,299	2,656,711