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Business Combinations - Preliminary Purchase Price Allocation (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
May 01, 2019 | Apr. 02, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Nov. 01, 2018 | Oct. 02, 2018 | May 01, 2018 | Dec. 31, 2017
Assets |  |  |  |  |  |  |  |
Loans |  |  | $ 28,881,496 | $ 25,523,276 |  |  |  |
Liabilities |  |  |  |  |  |  |  |
Goodwill |  |  | 349,398 | 236,347 |  |  |  | $ 150,601
Biscayne Bancshares |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Purchase Price |  | $ 118,949 |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |
Cash and due from banks |  | 78,010 |  |  |  |  |  |
Overnight investments |  | 306 |  |  |  |  |  |
Investment securities |  | 34,539 |  |  |  |  |  |
Loans |  | 863,384 |  |  |  |  |  |
Premises and equipment |  | 1,533 |  |  |  |  |  |
Other real estate owned |  | 2,046 |  |  |  |  |  |
Income earned not collected |  | 3,049 |  |  |  |  |  |
Intangible assets |  | 4,700 |  |  |  |  |  |
Intangible assets |  | 4,745 |  |  |  |  |  |
Other assets |  | 41,572 |  |  |  |  |  |
Fair value of assets acquired |  | 1,029,184 |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |  |
Deposits |  | 786,512 |  |  |  |  |  |
Accrued interest payable |  | 0 |  |  |  |  |  |
Borrowings |  | 157,415 |  |  |  |  |  |
Other liabilities |  | 12,829 |  |  |  |  |  |
Fair value of liabilities assumed |  | 956,756 | 1,138 | 0 |  |  |  |
Fair value of net assets assumed |  | 72,428 |  |  |  |  |  |
Goodwill |  | $ 46,521 |  |  |  |  |  |
Entegra Financial |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Purchase Price |  |  | 222,750 |  |  |  |  |
Assets |  |  |  |  |  |  |  |
Cash and due from banks |  |  | 59,815 |  |  |  |  |
Overnight investments |  |  | 242,770 |  |  |  |  |
Investment securities |  |  | 227,834 |  |  |  |  |
Loans |  |  | 1,031,186 |  |  |  |  |
Premises and equipment |  |  | 24,458 |  |  |  |  |
Other real estate owned |  |  | 1,846 |  |  |  |  |
Income earned not collected |  |  | 5,447 |  |  |  |  |
Intangible assets |  |  | 4,500 |  |  |  |  |
Intangible assets |  |  | 6,899 |  |  |  |  |
Other assets |  |  | 81,069 |  |  |  |  |
Fair value of assets acquired |  |  | 1,681,324 |  |  |  |  |
Deposits acquired |  |  | 1,326,967 |  |  |  |  |
Liabilities |  |  |  |  |  |  |  |
Borrowings |  |  | 169,433 |  |  |  |  |
Other liabilities |  |  | 14,808 |  |  |  |  |
Fair value of liabilities assumed |  |  | 1,511,208 |  |  |  |  |
Fair value of net assets assumed |  |  | 170,116 |  |  |  |  |
Goodwill |  |  | 52,634 |  |  |  |  |
First South Bancorp |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Purchase Price | $ 37,486 |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |
Cash and due from banks | 4,633 |  |  |  |  |  |  |
Overnight investments | 3,188 |  |  |  |  |  |  |
Investment securities | 23,512 |  |  |  |  |  |  |
Loans | 179,243 |  |  |  |  |  |  |
Premises and equipment | 4,944 |  |  |  |  |  |  |
Other real estate owned | 1,567 |  |  |  |  |  |  |
Income earned not collected | 604 |  |  |  |  |  |  |
Intangible assets | 2,268 |  |  |  |  |  |  |
Other assets | 19,192 |  |  |  |  |  |  |
Fair value of assets acquired | 239,151 |  |  |  |  |  |  |
Deposits acquired | 207,556 |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |  |
Borrowings | 5,155 |  |  |  |  |  |  |
Other liabilities | 2,850 |  |  |  |  |  |  |
Fair value of liabilities assumed | 215,561 |  | 1,067 | 0 |  |  |  |
Fair value of net assets assumed | 23,590 |  |  |  |  |  |  |
Goodwill | $ 13,896 |  |  |  |  |  |  |
Palmetto Heritage Bancshares |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |
Fair value of assets acquired |  |  |  |  | $ 162,200 |  |  |
Deposits acquired |  |  |  |  | 124,900 |  |  |
Liabilities |  |  |  |  |  |  |  |
Fair value of liabilities assumed |  |  |  |  | 149,300 |  |  |
Goodwill |  |  |  |  | $ 17,500 |  |  |
Capital Commerce Bancorp |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |
Fair value of assets acquired |  |  |  |  |  | $ 221,900 |  |
Deposits acquired |  |  |  |  |  | 172,400 |  |
Liabilities |  |  |  |  |  |  |  |
Fair value of liabilities assumed |  |  | $ 0 | $ 808 |  | 204,500 |  |
Goodwill |  |  |  |  |  | $ 10,700 |  |
HomeBancorp Inc. |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |
Fair value of assets acquired |  |  |  |  |  |  | $ 842,700 |
Deposits acquired |  |  |  |  |  |  | 619,600 |
Liabilities |  |  |  |  |  |  |  |
Fair value of liabilities assumed |  |  |  |  |  |  | 787,700 |
Goodwill |  |  |  |  |  |  | $ 57,600 |

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