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Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Past Due and Nonaccrual Loans - USD ($) $ in Thousands		Jun. 30, 2015		Dec. 31, 2014		Jun. 30, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or more days past due and still accruing		$ 80	[1]	$ 207	[1]	$ 266
Nonaccruals (including impaired nonaccruals)		8,905	[1]	9,287	[1]	$ 5,009
Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]	3,660		2,447
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]	$ 2,959		$ 2,302
Real Estate Construction Portfolio Segment[Member] | Construction Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or more days past due and still accruing	[1]
Nonaccruals (including impaired nonaccruals)	[1]
Real Estate Construction Portfolio Segment[Member] | Construction Other [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]			$ 28
Real Estate Construction Portfolio Segment[Member] | Construction Other [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]
Consumer Real Estate Portfolio Segment [Member] | Equity Lines [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or more days past due and still accruing	[1]
Nonaccruals (including impaired nonaccruals)	[1]
Consumer Real Estate Portfolio Segment [Member] | Equity Lines [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]	$ 67		$ 25
Consumer Real Estate Portfolio Segment [Member] | Equity Lines [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]
Consumer Real Estate Portfolio Segment [Member] | Closed-end First Liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or more days past due and still accruing	[1]	$ 67		$ 80
Nonaccruals (including impaired nonaccruals)	[1]	4		105
Consumer Real Estate Portfolio Segment [Member] | Closed-end First Liens [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]	972		719
Consumer Real Estate Portfolio Segment [Member] | Closed-end First Liens [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]	$ 67		185
Consumer Real Estate Portfolio Segment [Member] | Closed-end Junior Liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or more days past due and still accruing	[1]			$ 1
Nonaccruals (including impaired nonaccruals)	[1]
Consumer Real Estate Portfolio Segment [Member] | Closed-end Junior Liens [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]	$ 66		$ 74
Consumer Real Estate Portfolio Segment [Member] | Closed-end Junior Liens [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]			$ 1
Consumer Real Estate Portfolio Segment [Member] | Investor-owned Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or more days past due and still accruing	[1]
Nonaccruals (including impaired nonaccruals)	[1]	$ 13		$ 59
Consumer Real Estate Portfolio Segment [Member] | Investor-owned Residential Real Estate [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]	$ 71		336
Consumer Real Estate Portfolio Segment [Member] | Investor-owned Residential Real Estate [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]			$ 45
Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or more days past due and still accruing	[1]
Nonaccruals (including impaired nonaccruals)	[1]	$ 2,672		$ 2,735
Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]	837		850
Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]	$ 868		868
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or more days past due and still accruing	[1]			102
Nonaccruals (including impaired nonaccruals)	[1]	$ 2,805		$ 2,573
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]	637
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]	$ 1,569		$ 1,066
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or more days past due and still accruing	[1]
Nonaccruals (including impaired nonaccruals)	[1]	$ 2,921		$ 3,066
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Other [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]	$ 807
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Other [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]			$ 70
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or more days past due and still accruing	[1]
Nonaccruals (including impaired nonaccruals)	[1]	$ 490		$ 749
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]			153
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]	$ 442		43
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or more days past due and still accruing	[1]	$ 8		$ 4
Nonaccruals (including impaired nonaccruals)	[1]
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]	$ 4		$ 3
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]	8		4
Consumer Portfolio Segment [Member] | Automobile Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or more days past due and still accruing	[1]	$ 3		$ 20
Nonaccruals (including impaired nonaccruals)	[1]
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]	$ 147		$ 205
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]	3		$ 20
Consumer Portfolio Segment [Member] | Other Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or more days past due and still accruing	[1]	$ 2
Nonaccruals (including impaired nonaccruals)	[1]
Consumer Portfolio Segment [Member] | Other Consumer Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]	$ 52		$ 54
Consumer Portfolio Segment [Member] | Other Consumer Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	[1]	$ 2
[1] Only classes with past-due or nonaccrual loans are shown.

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+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 310



-SubTopic 10



-Section 50



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