Note 7 - Premises and Equipment (Details) - Components of Premises and Equipment - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Premises and equipment	$ 22,465	$ 22,188
Less: accumulated depreciation and amortization	(11,393)	(9,894)
Premises and equipment, net	11,072	12,294
Land [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment	1,508	1,915
Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment	195	195
Bank Buildings [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment	9,099	9,099
Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment	9,743	8,795
Software and Software Development Costs [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment	1,625	1,596
Assets Not Yet Placed in Service [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment	$ 295	$ 588