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Commitments (Tables) | 3 Months Ended
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Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Commitments | The contractual amounts of off-balance-sheet financial instruments as of March 31, 2019, and December 31, 2018, are as follows:
(in thousands) | March 31, 2019 |  | December 31, 2018
Commitments to extend credit | $ | 1,411,819 |  |  | $ | 1,344,687 |
Letters of credit | 53,645 |  |  | 44,665 |

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