CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $)	Dec. 31, 2013	Jun. 30, 2013
Allowance for doubtful accounts on trade receivables (in dollars)	$ 16,796	$ 16,196
Common stock, par value (in dollars per share)	$ 1	$ 1
Prior cumulative preferred stock, $5 par value | Series A
Preferred stock, par value (in dollars per share)	$ 5	$ 5
Preferred stock, liquidation preference (in dollars)	2,175,000	2,160,000
Prior cumulative preferred stock, $5 par value | Series B
Preferred stock, par value (in dollars per share)	$ 5	$ 5
Preferred stock, liquidation preference (in dollars)	2,130,000	2,115,000
Cumulative preferred stock, $20 par value | Series A
Preferred stock, par value (in dollars per share)	$ 20	$ 20
Preferred stock, liquidation preference (in dollars)	4,931,398	4,902,131
Cumulative preferred stock, $20 par value | Series B
Preferred stock, par value (in dollars per share)	$ 20	$ 20
Preferred stock, liquidation preference (in dollars)	$ 803,668	$ 798,899