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Shareholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2020
Stockholders' Equity Note [Abstract] |
Schedule of Compliance with Regulatory Capital Requirements | The following table presents the Company and Bank's regulatory capital ratios at the periods indicated:
|  | December 31, 2020 |  | Minimum Regulatory Capital Required for Capital Adequacy plus Capital Conservation Buffer |  | Minimum Regulatory Provision To Be "Well Capitalized" |  | December 31, 2019 |  | Minimum Regulatory Capital Required For Capital Adequacy plus Capital Conservation Buffer |  | Minimum Regulatory Provision To Be "Well Capitalized"
|  | Amount |  | Ratio |  |  |  | Amount |  | Ratio |  |
Camden National Corporation: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total risk-based capital ratio |  | $ | 498,290 |  |  | 15.40 | % |  | 10.50 | % |  | 10.00 | % |  | $ | 455,702 |  |  | 14.44 | % |  | 10.50 | % |  | 10.00 | %
Tier 1 risk-based capital ratio |  | 445,858 |  |  | 13.78 | % |  | 8.50 | % |  | 6.00 | % |  | 415,511 |  |  | 13.16 | % |  | 8.50 | % |  | 6.00 | %
Common equity Tier 1 risk-based capital ratio(1) |  | 402,858 |  |  | 12.45 | % |  | 7.00 | % |  | N/A |  | 372,511 |  |  | 11.80 | % |  | 7.00 | % |  | N/A
Tier 1 leverage capital ratio(1) |  | 445,858 |  |  | 9.13 | % |  | 4.00 | % |  | N/A |  | 415,511 |  |  | 9.55 | % |  | 4.00 | % |  | N/A
Camden National Bank: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total risk-based capital ratio |  | $ | 460,611 |  |  | 14.28 | % |  | 10.50 | % |  | 10.00 | % |  | $ | 423,540 |  |  | 13.45 | % |  | 10.50 | % |  | 10.00 | %
Tier 1 risk-based capital ratio |  | 420,294 |  |  | 13.03 | % |  | 8.50 | % |  | 8.00 | % |  | 398,349 |  |  | 12.65 | % |  | 8.50 | % |  | 8.00 | %
Common equity Tier 1 risk-based capital ratio |  | 420,294 |  |  | 13.03 | % |  | 7.00 | % |  | 6.50 | % |  | 398,349 |  |  | 12.65 | % |  | 7.00 | % |  | 6.50 | %
Tier 1 leverage capital ratio |  | 420,294 |  |  | 8.64 | % |  | 4.00 | % |  | 5.00 | % |  | 398,349 |  |  | 9.19 | % |  | 4.00 | % |  | 5.00 | %
(1) “Minimum Regulatory Provisions To Be ‘Well Capitalized’” are not formally defined under applicable banking regulations for bank holding companies.

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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://www.xbrl.org/2003/role/disclosureRef -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 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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 + Details
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