Note 6 - Loans (Details) - Performing and Nonperforming Loans, Segregated by Class of Loans (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	$ 649,695	$ 597,995
Commercial Portfolio Segment [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	152,959	163,902
Commercial Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	7,065	6,527
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	160,024	170,429
Commercial Real Estate Construction Financing Receivable [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	25,579	18,545
Commercial Real Estate Construction Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	25,579	18,545
Commercial Real Estate Other Receivable [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	312,197	274,821
Commercial Real Estate Other Receivable [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	9,896	14,539
Commercial Real Estate Other Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	322,093	289,360
Residential One To Four Family [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	60,146	62,474
Residential One To Four Family [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	7,438	8,217
Residential One To Four Family [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	67,584	70,691
Residential Real Estate and Home Equities [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	44,961	44,949
Residential Real Estate and Home Equities [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	89	513
Residential Real Estate and Home Equities [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	45,050	45,462
Consumer Portfolio Segment [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	29,365	3,508
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	29,365	3,508
Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	625,207	568,199
Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable	$ 24,488	$ 29,796