Note 20 - Regulatory Matters - Actual Capital Amounts and Ratios (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Total capital (to risk weighted assets) actual amount	$ 71,832	$ 67,540
Total capital (to risk weighted assets) actual ratio	14.98%	16.07%
Total capital (to risk weighted assets) minimum amount for capital adequacy purposes	$ 41,354	$ 33,624
Total capital (to risk weighted assets) minimum ratio for capital adequacy purposes	8.625%	8.00%
Total capital (to risk weighted assets) minimum amount to be well capitalized under prompt corrective action provisions	$ 47,946	$ 42,030
Total capital (to risk weighted assets) minimum ratio to be well capitalized under prompt corrective action provisions	10.00%	10.00%
Tier I capital (to risk weighted assets) actual amount	$ 68,446	$ 64,125
Tier I capital (to risk weighted assets) actual ratio	14.28%	15.26%
Tier I capital (to risk weighted assets) minimum amount for capital adequacy purposes	$ 31,764	$ 25,218
Tier I capital (to risk weighted assets) minimum ratio for capital adequacy purposes	6.625%	6.00%
Tier I capital (to risk weighted assets) minimum amount to be well capitalized under prompt corrective action provisions	$ 38,357	$ 33,624
Tier I capital (to risk weighted assets) minimum ratio to be well capitalized under prompt corrective action provisions	8.00%	8.00%
Common equity Tier I capital (to risk weighted assets) actual amount	$ 68,446	$ 64,125
Common equity Tier I capital (to risk weighted assets) actual ratio	14.28%	15.26%
Common equity Tier I capital (to risk weighted assets) minimum amount for capital adequacy purposes	$ 24,572	$ 18,913
Common equity Tier I capital (to risk weighted assets) minimum ratio for capital adequacy purposes	5.125%	4.50%
Common equity Tier I capital (to risk weighted assets) minimum amount to be well capitalized under prompt corrective action provisions	$ 31,165	$ 27,319
Common equity Tier I capital (to risk weighted assets) minimum ratio to be well capitalized under prompt corrective action provisions	6.50%	6.50%
Tier I capital (to average assets) actual amount	$ 68,446	$ 64,125
Tier I capital (to average assets) actual ratio	9.30%	12.15%
Tier I capital (to average assets) minimum amount for capital adequacy purposes	$ 29,447	$ 21,110
Tier I capital (to average assets) minimum ratio for capital adequacy purposes	4.00%	4.00%
Tier I capital (to average assets) minimum amount to be well capitalized under prompt corrective action provisions	$ 36,809	$ 26,387
Tier I capital (to average assets) minimum ratio to be well capitalized under prompt corrective action provisions	5.00%	5.00%

The amount of tangible capital required to be well capitalized.

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Tangible capital (to adjusted total assets) minimum amount to be well capitalized under prompt corrective action provision, ratio.

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The amount of total capital as defined in the regulations.

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The minimum amount of Total Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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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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The Total risk based capital ratio (total capital divided by risk weighted assets) required to be categorized as "well capitalized", in 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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Tangible capital as defined in the regulations (generally includes outstanding stock plus retained earnings) for banking institutions subject to Office of Thrift Supervision (OTS) capital requirements.

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The minimum amount of tangible capital required under the regulatory framework for prompt corrective action.

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The minimum amount of Tangible Capital divided by tangible assets (Tangible Capital Ratio) as defined in the regulations.

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Tangible Capital divided by Tangible 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 required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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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 minimum Tier One Capital Ratio (Tier one 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 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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