Quarterly Financial Data (unaudited) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Schedule Of Quarterly Financial Information [Line Items]
Net sales	$ 9,803,000	$ 8,840,000	$ 8,846,000	$ 8,463,000	$ 9,114,000	$ 8,503,000	$ 9,000,000	$ 8,845,000	$ 35,952,487	$ 35,461,769	$ 36,370,616
Gross profit	2,257,000	1,626,000	1,779,000	1,698,000	1,638,000	1,699,000	2,158,000	1,575,000	7,359,735	7,069,598	7,314,249
Income (Loss) from operations	166,000	(762,000)	(688,000)	(635,000)	(472,000)	(489,000)	(35,000)	(698,000)	(1,919,326)	(1,693,737)	(3,108,884)
Net loss	$ (282,000)	$ (784,000)	$ (709,000)	$ (530,000)	$ (521,000)	$ (503,000)	$ (45,000)	$ (708,000)	$ (2,304,831)	$ (1,777,310)	$ (2,805,913)
Basic loss per share	$ (0.03)	$ (0.10)	$ (0.09)	$ (0.07)	$ (0.06)	$ (0.06)	$ (0.01)	$ (0.09)	$ (0.29)	$ (0.22)	$ (0.35)
Diluted loss per share	$ (0.03)	$ (0.10)	$ (0.09)	$ (0.07)	$ (0.06)	$ (0.06)	$ (0.01)	$ (0.09)	$ (0.29)	$ (0.22)	$ (0.35)