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Financial Instruments with Off-Balance-Sheet Risk (Tables) | 12 Months Ended
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Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Financial Instruments Outstanding Contract Amounts Represent Credit Risk | As of December 31, 2018 and 2017, the following off-balance sheet commitments, financial instruments and other arrangements were outstanding:
| December 31,
| 2018 |  | 2017
(amounts in thousands) |
Commitments to fund loans | $ | 345,608 |  |  | $ | 333,874 |
Unfunded commitments to fund mortgage warehouse loans | 1,537,900 |  |  | 1,567,139 |
Unfunded commitments under lines of credit and credit cards | 867,131 |  |  | 485,345 |
Letters of credit | 55,659 |  |  | 39,890 |
Other unused commitments | 4,822 |  |  | 6,679 |

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- Definition Tabular disclosure of information about obligations resulting from other commitments. + References No definition available. + Details
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