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Subordinated Debentures (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 USD ($) shares | Dec. 31, 2020 USD ($) shares | Dec. 31, 2019 shares | Nov. 01, 2016 USD ($)
Subordinated Borrowing [Line Items] |  |  |  |
Number of Unconsolidated Statutory Business Trusts | 13 |  |  |
Investments trust preferred securities | $ 2,900 |  |  |
Subordinated debentures and notes | $ 154,899 | $ 203,637 |  |
Conversion of subordinated debt into common stock (in shares) | shares | 0 | 0 | 0 |
5.75% |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Fixed interest rate | 5.75% |  |  |
Senior Subordinated Notes [Member] |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Senior Subordinated Notes |  |  |  | $ 50,000
Trust preferred securities [Member] |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Subordinated debentures and notes | $ 92,553 | $ 92,290 |  |
Trust preferred securities [Member] | EFSC Clayco Statutory Trust I |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Subordinated debentures and notes | $ 3,196 | 3,196 |  |
Maturity Date | Dec. 17, 2033 |  |  |
Initial Call Date (1) | Dec. 17, 2008 |  |  |
Description of variable rate | 3 Month LIBOR |  |  |
Floating interest rate | 0.0285 |  |  |
Trust preferred securities [Member] | EFSC Capital Trust II |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Subordinated debentures and notes | $ 5,155 | 5,155 |  |
Maturity Date | Jun. 17, 2034 |  |  |
Initial Call Date (1) | Jun. 17, 2009 |  |  |
Description of variable rate | 3 Month LIBOR |  |  |
Floating interest rate | 0.0265 |  |  |
Trust preferred securities [Member] | EFSC Statutory Trust III |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Subordinated debentures and notes | $ 11,341 | 11,341 |  |
Maturity Date | Dec. 15, 2034 |  |  |
Initial Call Date (1) | Dec. 15, 2009 |  |  |
Description of variable rate | 3 Month LIBOR |  |  |
Floating interest rate | 0.0197 |  |  |
Trust preferred securities [Member] | EFSC Clayco Statutory Trust II |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Subordinated debentures and notes | $ 4,124 | 4,124 |  |
Maturity Date | Sep. 15, 2035 |  |  |
Initial Call Date (1) | Sep. 15, 2010 |  |  |
Description of variable rate | 3 Month LIBOR |  |  |
Floating interest rate | 0.0183 |  |  |
Trust preferred securities [Member] | EFSC Statutory Trust IV |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Subordinated debentures and notes | $ 10,310 | 10,310 |  |
Maturity Date | Dec. 15, 2035 |  |  |
Initial Call Date (1) | Dec. 15, 2010 |  |  |
Description of variable rate | 3 Month LIBOR |  |  |
Floating interest rate | 0.0144 |  |  |
Trust preferred securities [Member] | EFSC Statutory Trust V |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Subordinated debentures and notes | $ 4,124 | 4,124 |  |
Maturity Date | Sep. 15, 2036 |  |  |
Initial Call Date (1) | Sep. 15, 2011 |  |  |
Description of variable rate | 3 Month LIBOR |  |  |
Floating interest rate | 0.0160 |  |  |
Trust preferred securities [Member] | EFSC Capital Trust VI |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Subordinated debentures and notes | $ 14,433 | 14,433 |  |
Maturity Date | Mar. 30, 2037 |  |  |
Initial Call Date (1) | Mar. 30, 2012 |  |  |
Description of variable rate | 3 Month LIBOR |  |  |
Floating interest rate | 0.0160 |  |  |
Trust preferred securities [Member] | EFSC Capital Trust VII |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Subordinated debentures and notes | $ 4,124 | 4,124 |  |
Maturity Date | Dec. 15, 2037 |  |  |
Initial Call Date (1) | Dec. 15, 2012 |  |  |
Description of variable rate | 3 Month LIBOR |  |  |
Floating interest rate | 0.0225 |  |  |
Trust preferred securities [Member] | JEFFCO Stat Trust I [Member] |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Subordinated debentures and notes | $ 7,732 | 7,752 |  |
Maturity Date | Feb. 22, 2031 |  |  |
Initial Call Date (1) | Feb. 22, 2011 |  |  |
Fixed interest rate | 10.20% |  |  |
Trust preferred securities [Member] | EFSC Capital Trust VIII |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Fixed interest rate | 9.00% |  |  |
Trust preferred securities [Member] | JEFFCO Stat Trust II [Member] |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Subordinated debentures and notes | $ 4,496 | 4,443 |  |
Maturity Date | Mar. 17, 2034 |  |  |
Initial Call Date (1) | Mar. 17, 2009 |  |  |
Description of variable rate | 3 Month LIBOR |  |  |
Fixed interest rate | 2.75% |  |  |
Trust preferred securities [Member] | Trinity Capital Trust III [Member] |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Subordinated debentures and notes | $ 5,339 | 5,272 |  |
Maturity Date | Sep. 08, 2034 |  |  |
Initial Call Date (1) | Sep. 08, 2009 |  |  |
Description of variable rate | 3 Month LIBOR |  |  |
Fixed interest rate | 2.70% |  |  |
Trust preferred securities [Member] | Trinity Capital Trust IV [Member] |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Subordinated debentures and notes | $ 10,310 | 10,310 |  |
Maturity Date | Nov. 23, 2035 |  |  |
Initial Call Date (1) | Aug. 23, 2010 |  |  |
Fixed interest rate | 6.88% |  |  |
Trust preferred securities [Member] | Trinity Capital Trust V [Member] |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Subordinated debentures and notes | $ 7,869 | 7,706 |  |
Maturity Date | Dec. 15, 2036 |  |  |
Initial Call Date (1) | Sep. 15, 2011 |  |  |
Description of variable rate | 3 Month LIBOR |  |  |
Fixed interest rate | 1.65% |  |  |
Senior Subordinated Notes [Member] |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Subordinated debentures and notes | $ 0 | 50,000 |  |
Debt issuance costs | (904) | (1,903) |  |
Subordinated notes, net of issuance costs | $ 62,346 | 111,347 |  |
Maturity Date | Nov. 01, 2026 |  |  |
Initial Call Date (1) | Nov. 01, 2021 |  |  |
Floating interest rate | 0.03387 |  |  |
Fixed interest rate | 4.75% |  |  |
Senior Subordinated Notes [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Floating interest rate | 0.0566 |  |  |
Senior Subordinated Notes [Member] | 5.75% |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Subordinated debentures and notes | $ 63,250 | $ 63,250 |  |
Maturity Date | Jun. 01, 2030 |  |  |
Initial Call Date (1) | Jun. 01, 2025 |  |  |

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