Consolidated Balance Sheet (Unaudited) (Parentheticals) - $ / shares	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2014
Common Class A [Member]
Common stock, par value (in dollars per share)	$ 0	$ 0	$ 0
Common stock, shares authorized (in shares)	10,000,000	10,000,000	10,000,000
Common stock, shares outstanding (in shares)	1,163,349	1,163,349	1,163,349
Treasury stock, shares (in shares)	15,795	15,795	15,795
Common Class B [Member]
Common stock, par value (in dollars per share)	$ 0	$ 0	$ 0
Common stock, shares authorized (in shares)	2,500,000	2,500,000	2,500,000
Common stock, shares outstanding (in shares)	474,866	474,866	474,866
Treasury stock, shares (in shares)	667	667	667
Preferred stock, par value (in dollars per share)	$ 0	$ 0	$ 0
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000	1,000,000
Preferred stock, shares outstanding (in shares)	0	0	0