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Regulatory Matters (Tables) | 12 Months Ended
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Dec. 31, 2021
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract] |
Summary of Regulatory Capital Requirement | Management believes, as of December 31, 2021, that Pinnacle Financial and Pinnacle Bank met all capital adequacy requirements to which they are subject. To be categorized as well-capitalized under applicable banking regulations, Pinnacle Financial and Pinnacle Bank must maintain certain total, Tier 1, common equity Tier 1 and Tier 1 leverage capital ratios as set forth in the following table and not be subject to a written agreement, order or directive to maintain a higher capital level. The capital conservation buffer of 2.5% is not included in the required minimum ratios of the table presented below. Pinnacle Financial's and Pinnacle Bank's actual capital amounts and ratios are presented in the following table (in thousands):
| Actual |  | Minimum Capital Requirement |  | Minimum To Be Well-Capitalized
| Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
December 31, 2021 |  |  |  |  |  |  |  |  |  |  |
Total capital to risk weighted assets: |  |  |  |  |  |  |  |  |  |  |
Pinnacle Financial | $ | 4,060,598 |  |  | 13.8 | % |  | $ | 2,347,963 |  |  | 8.0 | % |  | $ | 2,934,953 |  |  | 10.0 | %
Pinnacle Bank | $ | 3,670,111 |  |  | 12.6 | % |  | $ | 2,334,243 |  |  | 8.0 | % |  | $ | 2,917,804 |  |  | 10.0 | %
Tier 1 capital to risk weighted assets: |  |  |  |  |  |  |  |  |  |  |
Pinnacle Financial | $ | 3,425,751 |  |  | 11.7 | % |  | $ | 1,760,972 |  |  | 6.0 | % |  | $ | 2,347,963 |  |  | 8.0 | %
Pinnacle Bank | $ | 3,464,265 |  |  | 11.9 | % |  | $ | 1,750,683 |  |  | 6.0 | % |  | $ | 2,334,243 |  |  | 8.0 | %
Common equity Tier 1 capital: |  |  |  |  |  |  |  |  |  |  |
Pinnacle Financial | $ | 3,208,503 |  |  | 10.9 | % |  | $ | 1,320,729 |  |  | 4.5 | % |  | N/A |  | N/A
Pinnacle Bank | $ | 3,464,142 |  |  | 11.9 | % |  | $ | 1,313,012 |  |  | 4.5 | % |  | $ | 1,896,573 |  |  | 6.5 | %
Tier 1 capital to average assets (*): |  |  |  |  |  |  |  |  |  |  |
Pinnacle Financial | $ | 3,425,751 |  |  | 9.7 | % |  | $ | 1,412,747 |  |  | 4.0 | % |  | N/A |  | N/A
Pinnacle Bank | $ | 3,464,265 |  |  | 9.9 | % |  | $ | 1,406,063 |  |  | 4.0 | % |  | $ | 1,757,578 |  |  | 5.0 | %
December 31, 2020 |  |  |  |  |  |  |  |  |  |  |
Total capital to risk weighted assets: |  |  |  |  |  |  |  |  |  |  |
Pinnacle Financial | $ | 3,678,405 |  |  | 14.3 | % |  | $ | 2,063,352 |  |  | 8.0 | % |  | $ | 2,579,190 |  |  | 10.0 | %
Pinnacle Bank | $ | 3,259,538 |  |  | 12.7 | % |  | $ | 2,055,892 |  |  | 8.0 | % |  | $ | 2,569,865 |  |  | 10.0 | %
Tier 1 capital to risk weighted assets: |  |  |  |  |  |  |  |  |  |  |
Pinnacle Financial | $ | 2,803,541 |  |  | 10.9 | % |  | $ | 1,547,514 |  |  | 6.0 | % |  | $ | 2,063,352 |  |  | 8.0 | %
Pinnacle Bank | $ | 2,933,674 |  |  | 11.4 | % |  | $ | 1,541,919 |  |  | 6.0 | % |  | $ | 2,055,892 |  |  | 8.0 | %
Common equity Tier 1 capital: |  |  |  |  |  |  |  |  |  |  |
Pinnacle Financial | $ | 2,586,292 |  |  | 10.0 | % |  | $ | 1,160,635 |  |  | 4.5 | % |  | N/A |  | N/A
Pinnacle Bank | $ | 2,933,551 |  |  | 11.4 | % |  | $ | 1,156,439 |  |  | 4.5 | % |  | $ | 1,670,412 |  |  | 6.5 | %
Tier 1 capital to average assets (*): |  |  |  |  |  |  |  |  |  |  |
Pinnacle Financial | $ | 2,803,541 |  |  | 8.6 | % |  | $ | 1,298,756 |  |  | 4.0 | % |  | N/A |  | N/A
Pinnacle Bank | $ | 2,933,674 |  |  | 9.1 | % |  | $ | 1,294,033 |  |  | 4.0 | % |  | $ | 1,617,541 |  |  | 5.0 | %
(*) Average assets for the above calculations were based on the most recent quarter.

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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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