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Note 18 - Regulatory Matters - Transition Schedule for New Ratios, Including the Capital Conservation Buffer (Details) - Phased in Beginning 2018 [Member]	Dec. 31, 2019
Minimum common equity tier 1 capital ratio	4.50%
Minimum common equity tier 1 capital ratio plus capital conservation buffer	7.00%
Minimum tier 1 capital ratio	6.00%
Minimum tier 1 capital ratio plus capital conservation buffer	8.50%
Minimum total capital ratio	8.00%
Minimum total capital ratio plus capital conservation buffer	10.50%

X

- Definition

The minimum Common Equity Tier 1 Risk Based Capital Ratio (Common Equity Tier 1 Capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

+ References

No definition available.

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- Definition

The total of the minimum Common Equity Tier One Capital Ratio (Common Equity Tier one capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action and the capital conservation buffer.

+ References

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- Definition

The total of 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 and the capital conservation buffer.

+ References

No definition available.

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The total of 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 and the capital conservation buffer.

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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.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
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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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