Condensed Statements of Operations (Unaudited) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Condensed Statements of Operations (Unaudited) [Abstract]
Net revenues	$ 4,802,000	$ 4,775,000	$ 8,924,000	$ 9,634,000
Cost of revenues	2,826,000	3,071,000	5,322,000	5,931,000
Gross profit	1,976,000	1,704,000	3,602,000	3,703,000
Expenses:
Selling, general and administrative	1,820,000	1,991,000	3,616,000	4,307,000
Research and development	714,000	1,037,000	1,552,000	1,960,000
Gain on sale of product line	0	0	(2,000,000)	0
Total operating expenses	2,534,000	3,028,000	3,168,000	6,267,000
Interest and other income, net	(5,000)	46,000	(2,000)	78,000
Net income (loss)	$ (563,000)	$ (1,278,000)	$ 432,000	$ (2,486,000)
Per share data:
Basic net income (loss) per common share (in dollars per share)	$ (0.03)	$ (0.08)	$ 0.03	$ (0.15)
Diluted net income (loss) per common share (in dollars per share)	$ (0.03)	$ (0.08)	$ 0.03	$ (0.15)
Weighted average common shares outstanding:
Basic (in shares)	16,522,310	16,378,033	16,519,078	16,370,533
Diluted (in shares)	16,522,310	16,378,033	16,519,654	16,370,533