Note 7 - Premises and Equipment (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Depreciation	$ 3,500	$ 3,100	$ 2,400
Property, Plant and Equipment, Gross	74,839	60,016
Construction in Progress Land Purchased	$ 1,100
Number of Specific Store Locations	5
Cost of Completion	$ 19,400
Construction in Progress [Member]
Property, Plant and Equipment, Gross	$ 3,734	$ 4,471