Note 11 - Capital Ratios and Regulatory Minimum Requirements (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Consolidated Entities [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Capital	$ 103,357	$ 98,432
Tier 1 capital	95,704	90,819
Common equity tier 1 capital	95,704	90,819
Tier 1 leverage capital	$ 95,704	$ 90,819
Capital to risk-weighted assets	13.08%	12.58%
Tier 1 capital to risk-weighted assets	12.11%	11.60%
Common equity tier 1 capital to risk-weighted assets	12.11%	11.60%
Tier 1 leverage capital to average assets	9.08%	8.87%
Capital required for capital adequacy	$ 63,207	$ 62,613
Tier 1 capital required for capital adequacy	47,405	46,960
Common equity tier 1 capital required for capital adequacy	35,554	35,220
Tier 1 leverage capital required for capital adequacy	$ 42,160	$ 40,934
Capital required for capital adequacy to risk-weighted assets	8.00%	8.00%
Tier 1 capital required for capital adequacy to risk-weighted assets	6.00%	6.00%
Common equity tier 1 capital required for capital adequacy to risk-weighted assets	4.50%	4.50%
Tier 1 leverage capital required for capital adequacy to average assets	4.00%	4.00%
Capital required to be well capitalized	$ 79,009	$ 78,266
Tier 1 capital required to be well capitalized	$ 47,405	$ 46,960
Capital required to be well capitalized to risk-weighted assets	10.00%	10.00%
Tier 1 capital required to be well capitalized to risk-weighted assets	6.00%	6.00%
Bank [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Capital	$ 95,163	$ 91,091
Tier 1 capital	87,511	83,478
Common equity tier 1 capital	87,511	83,478
Tier 1 leverage capital	$ 87,511	$ 83,478
Capital to risk-weighted assets	12.43%	11.97%
Tier 1 capital to risk-weighted assets	11.43%	10.97%
Common equity tier 1 capital to risk-weighted assets	11.43%	10.97%
Tier 1 leverage capital to average assets	8.37%	8.22%
Capital required for capital adequacy	$ 61,266	$ 60,874
Tier 1 capital required for capital adequacy	45,950	45,656
Common equity tier 1 capital required for capital adequacy	34,462	34,242
Tier 1 leverage capital required for capital adequacy	$ 41,835	$ 40,632
Capital required for capital adequacy to risk-weighted assets	8.00%	8.00%
Tier 1 capital required for capital adequacy to risk-weighted assets	6.00%	6.00%
Common equity tier 1 capital required for capital adequacy to risk-weighted assets	4.50%	4.50%
Tier 1 leverage capital required for capital adequacy to average assets	4.00%	4.00%
Capital required to be well capitalized	$ 76,583	$ 76,093
Tier 1 capital required to be well capitalized	61,266	60,874
Common equity tier 1 capital required to be well capitalized	49,779	49,460
Tier 1 leverage capital required to be well capitalized	$ 52,293	$ 50,790
Capital required to be well capitalized to risk-weighted assets	10.00%	10.00%
Tier 1 capital required to be well capitalized to risk-weighted assets	8.00%	8.00%
Common equity tier 1 capital required to be well capitalized to risk-weighted assets	6.50%	6.50%
Tier 1 leverage capital required to be well capitalized to average assets	5.00%	5.00%

Common equity tier 1 capital as defined in the regulations.

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Common equity tier 1 capital to risk-weighted assets as defined in regulations.

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The minimum common equity tier 1 capital (common equity divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The amount of common equity tier 1 capital required to be categorized as well capitalized under the regulatory framework for prompt corrective action.

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The common equity tier 1 capital ratio (common equity tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action.

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The amount of total capital as defined in the regulations.

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The minimum Total risk based capital ratio (total capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The amount of Total Capital required to be categorized as well as capitalized under the regulatory framework for prompt corrective action.

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Total Capital divided by risk weighted assets as defined in the regulations.

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Tier 1 Leverage Capital as defined in the regulations. Also called Core Capital.

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The minimum amount of Tier 1 Leverage Capital for capital adequacy purposes divided by average assets as defined in the regulations.

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The amount of Tier 1 Leverage Capital required to be categorized as well capitalized under the regulatory framework for prompt corrective action.

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The amount of Tier 1 Leverage Capital required to be categorized as well capitalized divided by average assets as defined in the regulatory framework for prompt corrective action.

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Tier 1 Leverage Capital divided by average assets as defined in the regulations.

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Tier 1 Risk Based Capital as defined in the regulations.

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The minimum amount of Tier 1 Risk Based Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The amount of Tier 1 Risk Based Capital required to be categorized as well capitalized under the regulatory framework for prompt corrective action.

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The Tier 1 capital ratio (Tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action.

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Tier 1 capital divided by risk weighted assets as defined by regulations.

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