Note 21 - Dividend Reinvestment Plan (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Dividend Reinvestment Plan [Abstract]
Stock Issued During Period, Shares, Dividend Reinvestment Plan	148,582	116,957	25,984
Stock Issued During Period, Value, Dividend Reinvestment Plan	$ 4,200,000	$ 2,800,000	$ 605,000