Note 1 - Summary of Significant Accounting Policies (Details) - Weighted Average Number of Shares	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Weighted Average Number of Shares [Abstract]
Average number of common shares outstanding	6,948,789	6,947,974	6,942,411
Effect of dilutive options	10,345	20,419	17,456
Average number of common shares outstanding used to calculate diluted earnings per common share	6,959,134	6,968,393	6,959,867