Note 4 - Loans and Allowance for Loan Losses (Details) - Allowance for Loan Losses Activity, by Portfolio Segment (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Allowance for loan losses:
Beginning balance	$ 7,928	$ 6,468	$ 6,155	$ 6,905
Provision for Loan Losses	(682)	833	1,198	675
Loans charged off	(635)	(350)	(1,441)	(1,530)
Recoveries	353	315	1,052	1,216
Total ending allowance balance	6,964	7,266	6,964	7,266
Residential Portfolio Segment [Member]
Allowance for loan losses:
Beginning balance	1,957	1,192	1,250	1,329
Provision for Loan Losses	(240)	173	511	318
Loans charged off	(157)	(94)	(350)	(551)
Recoveries	99	80	248	255
Total ending allowance balance	1,659	1,351	1,659	1,351
Commercial Real Estate Portfolio Segment [Member]
Allowance for loan losses:
Beginning balance	3,171	3,034	2,807	3,946
Provision for Loan Losses	(551)	313	(100)	(880)
Loans charged off	(78)		(235)	(2)
Recoveries	3	48	73	331
Total ending allowance balance	2,545	3,395	2,545	3,395
Commercial and Industrial [Member]
Allowance for loan losses:
Beginning balance	1,651	1,342	1,305	783
Provision for Loan Losses	(90)	291	83	823
Loans charged off	(37)		(41)
Recoveries	114	14	291	41
Total ending allowance balance	1,638	1,647	1,638	1,647
Consumer Portfolio Segment [Member]
Allowance for loan losses:
Beginning balance	1,149	900	793	847
Provision for Loan Losses	199	56	704	414
Loans charged off	(363)	(256)	(815)	(977)
Recoveries	137	173	440	589
Total ending allowance balance	$ 1,122	$ 873	$ 1,122	$ 873