Note 8 - Servicing Rights (Details) - Valuation Allowance for Impairment of Servicing Rights (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Mortgage Servicing Rights [Member]
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items]
Valuation allowance, beginning of period	$ 31	$ 41	$ 39
Additions charged (reductions credited) to operations, net	(10)	(10)	2
Valuation allowance, end of period	21	31	41
SBA Servicing Rights [Member]
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items]
Valuation allowance, beginning of period	8
Additions charged (reductions credited) to operations, net	4	8
Valuation allowance, end of period	$ 12	$ 8