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Regulatory Matters - Capital and Risk-Based Capital and Leverage Ratios (Details) $ in Thousands | Sep. 30, 2021 USD ($) | Dec. 31, 2020 USD ($)
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Renasant corporation |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Tier 1 Capital to Average Assets (Leverage) - Amount | $ 1,395,321 | $ 1,306,597
Tier 1 Capital to Average Assets (Leverage) - Ratio | 0.0918 | 0.0937
Common Equity Tier 1 Capital to Risk-Weighted Assets - Amount | $ 1,287,684 | $ 1,199,394
Common Equity Tier 1 Capital to Risk-Weighted Assets - Ratio | 11.02% | 10.93%
Tier 1 Capital to Risk-Weighted Assets - Amount | $ 1,395,321 | $ 1,306,597
Tier 1 Capital to Risk-Weighted Assets - Ratio | 0.1194 | 0.1191
Total Capital to Risk-Weighted Assets - Amount | $ 1,712,500 | $ 1,653,694
Total Capital to Risk-Weighted Assets - Ratio | 0.1466 | 0.1507
Renasant bank |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Tier 1 Capital to Average Assets (Leverage) - Amount | $ 1,454,879 | $ 1,369,994
Tier 1 Capital to Average Assets (Leverage) - Ratio | 0.0958 | 0.0983
Common Equity Tier 1 Capital to Risk-Weighted Assets - Amount | $ 1,454,879 | $ 1,369,994
Common Equity Tier 1 Capital to Risk-Weighted Assets - Ratio | 12.45% | 12.49%
Tier 1 Capital to Risk-Weighted Assets - Amount | $ 1,454,879 | $ 1,369,994
Tier 1 Capital to Risk-Weighted Assets - Ratio | 0.1245 | 0.1249
Total Capital to Risk-Weighted Assets - Amount | $ 1,574,697 | $ 1,504,985
Total Capital to Risk-Weighted Assets - Ratio | 0.1348 | 0.1373

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- Definition Amount of total capital as defined by regulatory framework. + References Reference 1: 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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