Note 5 - Premises and Equipment, Net (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Abstract]
Operating Leases, Future Minimum Payments Due	$ 1.8
Operating Leases, Future Minimum Payments Due, Next Twelve Months	0.4
Operating Leases, Future Minimum Payments, Due in One to Three Years	0.8
Operating Leases, Future Minimum Payments, Due in Three to Five Years	0.5
Operating Leases, Future Minimum Payments, Due Thereafter	0.1
Depreciation	$ 2.3	$ 1.3	$ 1.5