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Note 11 - Regulatory and Operational Matters (Details)	Jan. 01, 2019	Mar. 31, 2016
Note 11 - Regulatory and Operational Matters (Details) [Line Items]
Capital Conservation Buffer		2.50%
Capital Conservation Buffer Phase In Amount		0.625%
Scenario, Forecast [Member]
Note 11 - Regulatory and Operational Matters (Details) [Line Items]
	7.00%
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	8.50%
Capital Required for Capital Adequacy to Risk Weighted Assets	10.50%

X

- Definition

An additional amount held in risk-based capital designed to ensure that banks build up capital buffers outside periods of stress which can be drawn down as losses are incurred. The requirement is based on simple capital conservation rules designed to avoid breaches of minimum capital requirements.

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- Definition

Amount resulting from the phase-in of a capital conservation buffer.

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- Definition

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.

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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826

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-SubTopic 505
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826

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-Subparagraph (c)(2)
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