Consolidated Statements of Income (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Consolidated Statements of Income
Net sales	$ 7,146,787	$ 7,998,319	$ 14,202,215	$ 15,204,345
Cost of sales	4,469,256	4,899,404	8,943,615	9,394,582
Gross profit	2,677,531	3,098,915	5,258,600	5,809,763
Selling, general, and administrative expenses	2,315,463	2,565,282	4,694,833	5,024,386
Research and development expenses	238,711	274,379	553,534	540,646
Operating income	123,357	259,254	10,233	244,731
Other income (expense):
Interest income	34	118	38	447
Interest expense	(56,045)	(66,114)	(115,958)	(132,881)
Other income, net	6,238	6,885	10,762	14,238
Net other income (expense)	(49,773)	(59,111)	(105,158)	(118,196)
Income (loss) before income taxes	73,584	200,143	(94,925)	126,535
Income tax benefit (provision)	(29,489)	(59,160)	31,236	(36,696)
Net income (loss)	$ 44,095	$ 140,983	$ (63,689)	$ 89,839
Basic and diluted net loss per common share	$ 0.02	$ 0.06	$ (0.03)	$ 0.04
Weighted-average common shares outstanding:
Basic	2,518,904	2,537,737	2,518,904	2,537,733
Diluted	2,521,242	2,538,257	2,518,904	2,538,295