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Parent Company Only Condensed Financial Statements - Condensed Balance Sheets (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | --- | ---
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Total assets | $ 13,054,172 | $ 13,537,358 |  |
Subordinated debentures and notes | 155,433 | 154,899 |  |
Shareholders' equity | 1,522,263 | 1,529,116 | $ 1,078,975 | $ 867,185
Total liabilities and shareholders' equity | 13,054,172 | 13,537,358 |  |
Parent [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Cash | 99,018 | 94,760 | $ 75,475 | $ 21,955
Other assets | 30,312 | 33,847 |  |
Total assets | 1,699,463 | 1,711,705 |  |
Subordinated debentures and notes | 155,433 | 154,899 |  |
Notes payable | 17,143 | 22,857 |  |
Accounts payable and other liabilities | 4,624 | 4,833 |  |
Shareholders' equity | 1,522,263 | 1,529,116 |  |
Total liabilities and shareholders' equity | 1,699,463 | 1,711,705 |  |
Enterprise Bank and Trust [Member] | Parent [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Investments | 1,553,657 | 1,568,796 |  |
Nonbank Subsidiaries [Member] | Parent [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Investments | $ 16,476 | $ 14,302 |  |

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