Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of Troubled Debt Restructurings (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of Troubled Debt Restructurings [Line Items]
Number of contracts	4	3	6	9
Pre-modification outstanding recorded investment	$ 822	$ 237	$ 915	$ 426
Post-modification outstanding recorded investment	806	244	900	434
1-4 Family [Member]
Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of Troubled Debt Restructurings [Line Items]
Number of contracts	2	1	2	1
Pre-modification outstanding recorded investment	760	193	760	193
Post-modification outstanding recorded investment	760	200	760	200
Commercial Real Estate Other [Member]
Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of Troubled Debt Restructurings [Line Items]
Number of contracts	0	0	0	2
Pre-modification outstanding recorded investment	0	0	0	75
Post-modification outstanding recorded investment	0	0	0	75
Consumer [Member]
Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of Troubled Debt Restructurings [Line Items]
Number of contracts	2	1	4	5
Pre-modification outstanding recorded investment	62	3	155	117
Post-modification outstanding recorded investment	46	3	140	118
Construction Industry [Member]
Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of Troubled Debt Restructurings [Line Items]
Number of contracts	0	1	0	1
Pre-modification outstanding recorded investment	0	41	0	41
Post-modification outstanding recorded investment	$ 0	$ 41	$ 0	$ 41