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Note 7 - Capital Requirements (Tables) | 9 Months Ended
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Sep. 30, 2019
Notes Tables |
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] |
|  | Actual |  |  | Minimum Capital Requirement |  |  | Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions |
|  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |
September 30, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Capital (to Risk-Weighted Assets) |  | $ | 83,591 |  |  |  | 14.57 | % |  | $ | 45,903 |  |  |  | 8.00 | % |  | $ | 57,379 |  |  |  | 10.00 | %
Tier 1 Capital (to Risk-Weighted Assets) |  | $ | 78,679 |  |  |  | 13.71 | % |  | $ | 34,428 |  |  |  | 6.00 | % |  | $ | 45,903 |  |  |  | 8.00 | %
Common Equity Tier 1 Capital (to Risk-Weighted Assets) |  | $ | 78,679 |  |  |  | 13.71 | % |  | $ | 25,821 |  |  |  | 4.50 | % |  | $ | 37,296 |  |  |  | 6.50 | %
Tier 1 Capital (to Average Assets) |  | $ | 78,679 |  |  |  | 10.09 | % |  | $ | 31,205 |  |  |  | 4.00 | % |  | $ | 39,006 |  |  |  | 5.00 | %
December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Capital (to Risk-Weighted Assets) |  | $ | 74,697 |  |  |  | 13.62 | % |  | $ | 43,859 |  |  |  | 8.00 | % |  | $ | 54,824 |  |  |  | 10.00 | %
Tier 1 Capital (to Risk-Weighted Assets) |  | $ | 69,688 |  |  |  | 12.71 | % |  | $ | 32,894 |  |  |  | 6.00 | % |  | $ | 43,859 |  |  |  | 8.00 | %
Common Equity Tier 1 Capital (to Risk-Weighted Assets) |  | $ | 69,688 |  |  |  | 12.71 | % |  | $ | 24,671 |  |  |  | 4.50 | % |  | $ | 35,635 |  |  |  | 6.50 | %
Tier 1 Capital (to Average Assets) |  | $ | 69,688 |  |  |  | 9.26 | % |  | $ | 30,100 |  |  |  | 4.00 | % |  | $ | 37,625 |  |  |  | 5.00 | %

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1G -URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958577-112826 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=117337116&loc=d3e65071-112826 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958570-112826 + Details
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