Note 8 - Capital Stock, Treasury Stock, and Contributed Capital (Details Textual)	Sep. 30, 2015 $ / shares shares	Sep. 30, 2014 shares
Common Class A [Member] | Minimum [Member]
Dividends Payable, Amount Per Share | $ / shares	$ 0.10
Common Class A [Member]
Common Stock, Shares Authorized	10,000,000	10,000,000
Common Stock, Capital Shares Reserved for Future Issuance	933,233	949,233
Common Stock, Voting Rights, per Share	1
Common Class B [Member]
Common Stock, Shares Authorized	2,500,000	2,500,000
Common Stock, Voting Rights, per Share	3
Serial Preferred Shares [Member]
Preferred Stock, Shares Authorized	1,000,000
Preferred Stock, Shares Authorized	1,000,000	1,000,000