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Note 12 - Regulatory Capital Matters - Summary of Regulatory Capital Information (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Capital | $ 126,812 | $ 130,785
Capital to Risk-Weighted Assets | 15.75% | 16.64%
Capital Required for Capital Adequacy | $ 64,398 | $ 62,880
Capital Required for Capital Adequacy to Risk-Weighted Assets | 8.00% | 8.00%
Tier I Risk Based Capital | $ 118,835 | $ 121,862
Tier I Risk Based Capital to Risk-Weighted Assets | 14.76% | 15.50%
Tier I Risk Based Capital Required for Capital Adequacy | $ 48,299 | $ 47,160
Tier I Risk Based Capital Required for Capital Adequacy to Risk-Weighted Assets | 6.00% | 6.00%
Common Equity Tier I Risk Based Capital | $ 95,335 | $ 89,002
Common Equity Tier I Risk Based Capital to Risk-Weighted Assets | 11.84% | 11.32%
Common Equity Tier I Risk Based Capital Required for Capital Adequacy | $ 36,224 | $ 35,370
Common Equity Tier I Risk Based Capital Required for Capital Adequacy to Risk-Weighted Assets | 4.50% | 4.50%
Tier I Leverage Capital | $ 118,835 | $ 121,862
Tier I Leverage Capital to Average Assets | 9.91% | 10.29%
Tier I Leverage Capital Required for Capital Adequacy | $ 47,978 | $ 47,368
Tier I Leverage Capital Required for Capital Adequacy to Average Assets | 4.00% | 4.00%
Colony Bank [Member] |  |
Capital | $ 129,973 | $ 127,646
Capital to Risk-Weighted Assets | 16.17% | 16.26%
Capital Required for Capital Adequacy | $ 64,312 | $ 62,796
Capital Required for Capital Adequacy to Risk-Weighted Assets | 8.00% | 8.00%
Capital Required to be Well Capitalized | $ 80,390 | $ 78,495
Capital Required to be Well Capitalized to Risk-Weighted Assets | 10.00% | 10.00%
Tier I Risk Based Capital | $ 121,996 | $ 118,723
Tier I Risk Based Capital to Risk-Weighted Assets | 15.18% | 15.12%
Tier I Risk Based Capital Required for Capital Adequacy | $ 48,234 | $ 47,097
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 | $ 64,312 | $ 62,796
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 | $ 121,996 | $ 118,723
Common Equity Tier I Risk Based Capital to Risk-Weighted Assets | 15.18% | 15.12%
Common Equity Tier I Risk Based Capital Required for Capital Adequacy | $ 36,175 | $ 35,323
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 | $ 52,253 | $ 51,022
Common Equity Tier I Risk Based Capital Required to Be Well Capitalized to Risk-Weighted Assets | 6.50% | 6.50%
Tier I Leverage Capital | $ 121,996 | $ 118,723
Tier I Leverage Capital to Average Assets | 10.19% | 10.04%
Tier I Leverage Capital Required for Capital Adequacy | $ 47,906 | $ 47,290
Tier I Leverage Capital Required for Capital Adequacy to Average Assets | 4.00% | 4.00%
Tier I Leverage Capital Required to Be Well Capitalized | $ 59,882 | $ 59,113
Tier I Leverage Capital Required to Be Well Capitalized to Average Assets | 5.00% | 5.00%

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- Definition The minimum Common Equity Tier One 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. + Details
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- Definition The amount of total capital as defined in the regulations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6490092&loc=d3e47304-110998 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84167132&loc=d3e65071-112826 Reference 3: http://www.xbrl.org/2003/role/presentationRef -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 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6490092&loc=d3e47080-110998 + Details
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- Definition The amount of Total Capital required to be categorized as well as capitalized 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 -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958568-112826 + Details
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- Definition Tier 1 Leverage Capital as defined in the regulations. Also called Core Capital. + 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=84167132&loc=SL5958568-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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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- 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://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=84167132&loc=SL5958568-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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 3: http://www.xbrl.org/2003/role/presentationRef -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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- Definition 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. + 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=84167132&loc=SL5958568-112826 + Details
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