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Note 21 - Regulatory Capital Matters - Summary of Regulatory Capital Information (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Capital | $ 133,900 | $ 127,786
Capital to Risk-Weighted Assets | 15.86% | 15.56%
Capital Required for Capital Adequacy | $ 67,527 | $ 65,718
Capital Required for Capital Adequacy to Risk-Weighted Assets | 8.00% | 8.00%
Tier I Risk Based Capital | $ 126,623 | $ 120,279
Tier I Risk Based Capital to Risk-Weighted Assets | 15.00% | 14.64%
Tier I Risk Based Capital Required for Capital Adequacy | $ 50,645 | $ 49,289
Tier I Risk Based Capital Required for Capital Adequacy to Risk-Weighted Assets | 6.00% | 6.00%
Common Equity Tier I Risk Based Capital | $ 103,123 | $ 96,779
Common Equity Tier I Risk Based Capital to Risk-Weighted Assets | 12.22% | 11.78%
Common Equity Tier I Risk Based Capital Required for Capital Adequacy | $ 37,984 | $ 36,967
Common Equity Tier I Risk Based Capital Required for Capital Adequacy to Risk-Weighted Assets | 4.50% | 4.50%
Tier I Leverage Capital | $ 126,623 | $ 120,279
Tier I Leverage Capital to Average Assets | 10.24% | 9.89%
Tier I Leverage Capital Required for Capital Adequacy | $ 49,478 | $ 48,635
Tier I Leverage Capital Required for Capital Adequacy to Average Assets | 4.00% | 4.00%
Colony Bank [Member] |  |
Capital | $ 131,723 | $ 127,470
Capital to Risk-Weighted Assets | 15.63% | 15.54%
Capital Required for Capital Adequacy | $ 67,418 | $ 65,628
Capital Required for Capital Adequacy to Risk-Weighted Assets | 8.00% | 8.00%
Capital Required to be Well Capitalized | $ 84,272 | $ 82,036
Capital Required to be Well Capitalized to Risk-Weighted Assets | 10.00% | 10.00%
Tier I Risk Based Capital | $ 124,446 | $ 119,963
Tier I Risk Based Capital to Risk-Weighted Assets | 14.77% | 14.62%
Tier I Risk Based Capital Required for Capital Adequacy | $ 50,563 | $ 49,221
Tier I Risk Based Capital Required for Capital Adequacy to Risk-Weighted Assets | 6.00% | 6.00%
Tier I Risk Based Capital Required to be Well Capitalized | $ 67,418 | $ 65,628
Tier I Risk Based Capital Required to be Well Capitalized to Risk-Weighted Assets | 8.00% | 8.00%
Common Equity Tier I Risk Based Capital | $ 124,446 | $ 119,963
Common Equity Tier I Risk Based Capital to Risk-Weighted Assets | 14.77% | 14.62%
Common Equity Tier I Risk Based Capital Required for Capital Adequacy | $ 37,923 | $ 36,916
Common Equity Tier I Risk Based Capital Required for Capital Adequacy to Risk-Weighted Assets | 4.50% | 4.50%
Common Equity Tier I Risk Based Capital Required to Be Well Capitalized | $ 54,777 | $ 53,323
Common Equity Tier I Risk Based Capital Required to Be Well Capitalized to Risk-Weighted Assets | 6.50% | 6.50%
Tier I Leverage Capital | $ 124,446 | $ 119,963
Tier I Leverage Capital to Average Assets | 10.08% | 9.88%
Tier I Leverage Capital Required for Capital Adequacy | $ 49,396 | $ 48,566
Tier I Leverage Capital Required for Capital Adequacy to Average Assets | 4.00% | 4.00%
Tier I Leverage Capital Required to Be Well Capitalized | $ 61,745 | $ 60,708
Tier I Leverage Capital Required to Be Well Capitalized to Average Assets | 5.00% | 5.00%

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- Definition 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://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=84167132&loc=SL5958570-112826 Reference 2: 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=84167132&loc=SL5958568-112826 Reference 3: 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=84167132&loc=d3e65071-112826 + Details
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