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Commitments and Contingencies (Tables) | 3 Months Ended
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Mar. 31, 2019
Commitments And Contingencies Disclosure [Abstract] |
Off-Balance Sheet Financial Instruments | The following table presents a summary of the Company’s off-balance sheet financial instruments as of March 31, 2019 and December 31, 2018:
﻿ |  | March 31, |  |  | December 31, |
(in thousands) |  | 2019 |  |  | 2018 |
Commitments to extend credit |  | $ | 7,198,032 |  |  | $ | 7,234,528 |
Letters of credit |  |  | 336,419 |  |  |  | 365,498 |

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