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Deposits (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure Text Block [Abstract] |
Schedule Of Time Deposits [Table Text Block] | As of December 31, 2017, the contractual maturities of these time deposits were as follows (dollars in thousands):
2018 |  | $ | 597,726 |
2019 |  |  | 447,841 |
2020 |  |  | 105,531 |
2021 |  |  | 25,251 |
2022 |  |  | 3,611 |
Total |  | $ | 1,179,960 |

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