Consolidated Balance Sheet (Parentheticals) - USD ($)	Sep. 30, 2015	Sep. 30, 2014
Common Class A [Member]
Class of common stock - par value (in dollars per share)	$ 0	$ 0
Class of common stock - shares authorized (in shares)	10,000,000	10,000,000
Class of common stock - shares issued (in shares)	1,179,144	1,179,144
Treasury shares (in shares)	15,795	15,795
Common Class B [Member]
Class of common stock - par value (in dollars per share)	$ 0	$ 0
Class of common stock - shares authorized (in shares)	2,500,000	2,500,000
Class of common stock - shares issued (in shares)	475,533	475,533
Treasury shares (in shares)	667	667
Allowance for doubtful accounts	$ 10,000	$ 10,000
Allowance for obsolete inventory	251,500	363,500
Deferred income taxes-valuation allowance	142,100	107,700
Deferred income taxes-valuation allowance	$ 4,106,800	$ 4,059,000
Preferred stock - shares authorized (in shares)	1,000,000	1,000,000
Preferred stock - shares outstanding (in shares)	0	0