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Regulatory Matters (Tables) | 12 Months Ended
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Dec. 31, 2019
Regulated Operations [Abstract] |
Schedule of Actual Capital Amounts and Ratios | The capital ratios are presented in the table below:
| December 31, 2019 |  |  | December 31, 2018 |  |  |  |
| EFSC | Bank |  | EFSC | Bank |  | To Be Well-Capitalized | Minimum Ratio with CCB
Common Equity Tier 1 Capital to Risk Weighted Assets | 9.90 | % | 11.69 | % |  | 9.79 | % | 11.37 | % |  | 6.50 | % | 7.00 | %
Tier 1 Capital to Risk Weighted Assets | 11.40 |  | 11.70 |  |  | 11.14 |  | 11.38 |  |  | 8.00 |  | 8.50 |
Total Capital to Risk Weighted Assets | 12.90 |  | 12.40 |  |  | 13.02 |  | 12.26 |  |  | 10.00 |  | 10.50 |
Leverage Ratio (Tier 1 Capital to Average Assets) | 10.05 |  | 10.31 |  |  | 10.29 |  | 10.52 |  |  | 5.00 |  | 4.00 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1G -URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958577-112826 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=117337116&loc=d3e65071-112826 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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