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Regulatory Matters - Capital and Risk-Based Capital and Leverage Ratios (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
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Renasant Corporation |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Tier 1 capital to average assets (leverage) - amount | $ 1,252,116 | $ 1,188,412
Tier 1 capital to average assets (leverage) - ratio | 10.56% | 10.11%
Common equity tier 1 capital to risk-weighted assets - amount | $ 1,147,024 | $ 1,085,751
Common equity tier 1 capital to risk-weighted assets - ratio | 11.36% | 11.05%
Tier 1 capital to risk-weighted assets - amount | $ 1,252,116 | $ 1,188,412
Tier 1 capital to risk-weighted assets - ratio | 12.40% | 12.10%
Total capital to risk-weighted assets - amount | $ 1,421,600 | $ 1,386,507
Total capital to risk-weighted assets - ratio | 14.07% | 14.12%
Renasant Bank |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Tier 1 capital to average assets (leverage) - amount | $ 1,326,065 | $ 1,276,976
Tier 1 capital to average assets (leverage) - ratio | 11.20% | 10.88%
Common equity tier 1 capital to risk-weighted assets - amount | $ 1,326,065 | $ 1,276,976
Common equity tier 1 capital to risk-weighted assets - ratio | 13.15% | 13.02%
Tier 1 capital to risk-weighted assets - amount | $ 1,326,065 | $ 1,276,976
Tier 1 capital to risk-weighted assets - ratio | 13.15% | 13.02%
Total capital to risk-weighted assets - amount | $ 1,381,973 | $ 1,331,619
Total capital to risk-weighted assets - ratio | 13.70% | 13.58%

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