Consolidated Statements of Income (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Consolidated Statements of Income
Net sales	$ 7,303,189	$ 7,146,787	$ 14,519,513	$ 14,202,215
Cost of sales	4,839,578	4,469,256	9,488,330	8,943,615
Gross profit	2,463,611	2,677,531	5,031,183	5,258,600
Selling, general, and administrative expenses	2,379,720	2,315,463	4,631,349	4,694,833
Research and development expenses	234,674	238,711	451,500	553,534
Operating income (loss)	(150,783)	123,357	(51,666)	10,233
Other income (expense):
Interest income	1,280	34	3,601	38
Interest expense	(79,736)	(56,045)	(128,029)	(115,958)
Other income, net	3,113	6,238	6,455	10,762
Net other income (expense)	(75,343)	(49,773)	(117,973)	(105,158)
Income (loss) before income taxes	(226,126)	73,584	(169,639)	(94,925)
Income tax benefit (provision)	92,583	(29,489)	77,020	31,236
Net income (loss)	$ (133,543)	$ 44,095	$ (92,619)	$ (63,689)
Basic and diluted net loss per common share	$ (0.05)	$ 0.02	$ (0.04)	$ (0.03)
Weighted-average common shares outstanding:
Basic	2,520,389	2,518,904	2,520,389	2,518,904
Diluted	2,520,389	2,521,242	2,520,389	2,518,904