Note 8 - Income Taxes (Details) (Earliest Tax Year [Member])	3 Months Ended
	Mar. 31, 2015
Domestic Tax Authority [Member]
Note 8 - Income Taxes (Details) [Line Items]
Open Tax Year	2011
State and Local Jurisdiction [Member]
Note 8 - Income Taxes (Details) [Line Items]
Open Tax Year	2008