Note 6 - Premises and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Abstract]
Depreciation	$ 749	$ 732	$ 726
Operating Leases, Future Minimum Payments Due, Next Twelve Months	266
Operating Leases, Future Minimum Payments, Due in Two Years	244
Operating Leases, Future Minimum Payments, Due in Three Years	244
Operating Leases, Future Minimum Payments, Due in Four Years	196
Operating Leases, Future Minimum Payments, Due Thereafter	$ 22