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Business Combinations - Schedule of Identifiable Assets Acquired and Liability Assumed (Details) - USD ($) $ in Thousands | Feb. 01, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |
Goodwill recorded for Community Financial |  | $ 350,298 | $ 349,398 | $ 236,347
Community Financial Holding Co. Inc. |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Purchase price | $ 2,320 |  |  |
Cash and due from banks | 1,085 |  |  |
Overnight investments | 35,129 |  |  |
Investment securities | 30,146 |  |  |
Loans | 133,989 |  |  |
Premises and equipment | 7,624 |  |  |
Other real estate owned | 9,813 |  |  |
Income earned not collected | 558 |  |  |
Intangible assets | 536 |  |  |
Other assets | 2,520 |  |  |
Total assets acquired | 221,400 |  |  |
Deposits | 209,340 |  |  |
Borrowings | 9,925 |  |  |
Other liabilities | 501 |  |  |
Total liabilities assumed | 219,766 |  |  |
Fair value of net assets acquired | 1,634 |  |  |
Goodwill recorded for Community Financial | $ 686 |  |  |

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