Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $)	Dec. 31, 2013	Sep. 30, 2013
Marketable securities, common stocks (in Dollars)	$ 143,278,000	$ 129,699,000
Marketable securities, bonds (in Dollars)	7,469,000	7,295,000
Accounts receivable, allowance for doubtful accounts (in Dollars)	$ 250,000	$ 250,000
Preferred stock par value (in Dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	5,000,000	5,000,000
Common stock, shares outstanding	1,380,746	1,380,746