Quarterly Consolidated Financial Information (Schedule Of Quarterly Financial Information) (Details) (USD $)	3 Months Ended								12 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Quarterly Consolidated Financial Information [Abstract]
Net sales	$ 14,708,000	$ 16,291,000	$ 16,410,000	$ 12,888,000	$ 15,093,000	$ 18,309,000	$ 17,852,000	$ 15,546,000	$ 60,297,000	$ 66,800,000	$ 60,421,000
Gross margin	8,446,000	10,012,000	8,998,000	7,281,000	8,456,000	10,952,000	9,484,000	8,505,000	34,737,000	37,397,000	36,400,000
Operating income (loss)	187,000	732,000	(461,000)	(2,504,000)	(1,818,000)	558,000	(502,000)	(957,000)	(2,046,000)	(2,719,000)	(328,000)
Net income (loss)	$ 209,000	$ 337,000	$ (833,000)	$ (2,600,000)	$ (1,353,000)	$ 498,000	$ (1,189,000)	$ (1,211,000)	$ (2,887,000)	$ (3,255,000)	$ (1,014,000)
Net income (loss) per share-basic	$ 0.02	$ 0.04	$ (0.10)	$ (0.31)	$ (0.16)	$ 0.06	$ (0.14)	$ (0.14)	$ (0.34)	$ (0.39)	$ (0.12)
Net income (loss) per share-diluted	$ 0.02	$ 0.04	$ (0.10)	$ (0.31)	$ (0.16)	$ 0.06	$ (0.14)	$ (0.14)	$ (0.34)	$ (0.39)	$ (0.12)