Note 7 - Derivative Financial Instruments (Details Textual) - USD ($)	1 Months Ended
	May. 30, 2010	May. 31, 2015	May. 25, 2014
Interest Rate Swap Term	5 years
Derivative, Notional Amount	$ 20,000,000
Derivative, Swaption Interest Rate	4.24%
Derivative Asset, Notional Amount	$ 20,000,000
Derivative Liability, Fair Value, Gross Liability		$ 0	$ 44,000