Consolidated Balance Sheets (Parentheticals) (USD $)	Mar. 31, 2013	Jun. 30, 2012
Allowance for uncollectible accounts receivable (in dollars)	$ 9,000	$ 25,000
Preferred stock, no par value (in dollar per share)
Preferred stock, shares authorized	1,800,000	1,800,000
Common stock, no par value (in dollars per share)
Common stock, shares authorized	640,000,000	640,000,000
Common stock, shares issued	32,878,702	32,510,069
Common stock, shares outstanding	32,878,702	32,510,069
Series A Convertible Preferred Stock
Preferred stock, shares authorized	900,000	900,000
Preferred stock, shares issued	442,968	442,968
Preferred stock, shares outstanding	442,968	442,968
Preferred stock, liquidation preference value (in dollars)	$ 16,026,004	$ 15,361,552