Note 5 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of Troubled Debt Restructurings (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Note 5 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of Troubled Debt Restructurings [Line Items]
Number of Contracts	8	32
Pre-modification Outstanding Recorded Investment	$ 1,101	$ 1,727
Post-modification Outstanding Recorded Investment	1,080	1,355
1-4 Family [Member]
Note 5 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of Troubled Debt Restructurings [Line Items]
Number of Contracts	2	2
Pre-modification Outstanding Recorded Investment	760	210
Post-modification Outstanding Recorded Investment	760	219
Residential Developments [Member]
Note 5 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of Troubled Debt Restructurings [Line Items]
Number of Contracts	0	0
Pre-modification Outstanding Recorded Investment	0	0
Post-modification Outstanding Recorded Investment	0	0
Commercial Real Estate Other Receivable [Member]
Note 5 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of Troubled Debt Restructurings [Line Items]
Number of Contracts	1	3
Pre-modification Outstanding Recorded Investment	155	754
Post-modification Outstanding Recorded Investment	155	329
Consumer [Member]
Note 5 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of Troubled Debt Restructurings [Line Items]
Number of Contracts	4	21
Pre-modification Outstanding Recorded Investment	155	528
Post-modification Outstanding Recorded Investment	140	548
Construction Industry [Member]
Note 5 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of Troubled Debt Restructurings [Line Items]
Number of Contracts	0	1
Pre-modification Outstanding Recorded Investment	0	41
Post-modification Outstanding Recorded Investment	0	41
Commercial Business Other [Member]
Note 5 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of Troubled Debt Restructurings [Line Items]
Number of Contracts	1	5
Pre-modification Outstanding Recorded Investment	31	194
Post-modification Outstanding Recorded Investment	$ 25	$ 218

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 33

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953676-111524

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