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Borrowings (Tables) | 12 Months Ended
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Dec. 31, 2018
Debt Disclosure [Abstract] |
Schedule of short-term and long-term borrowings | Information relating to short-term and long-term borrowings is as follows for the years ended December 31:
|  | 2018 |  |  | 2017 |  |  | 2016 |
(dollars in thousands) |  | Amount |  |  | Rate |  |  | Amount |  |  | Rate |  |  | Amount |  |  | Rate |
Short-term: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
At Year-End: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer repurchase agreements and federal funds purchased |  | $ | 30,413 |  |  |  | 0.86 | % |  | $ | 76,561 |  |  |  | 0.33 | % |  | $ | 76,561 |  |  |  | 0.33 | %
Federal Home Loan Bank – current portion |  |  | — |  |  |  | — |  |  |  | 325,000 |  |  |  | 1.48 | % |  |  | 325,000 |  |  |  | 1.48 | %
Total |  | $ | 30,413 |  |  |  |  |  |  | $ | 401,561 |  |  |  |  |  |  | $ | 401,561 |  |  |  |  |
Average Daily Balance: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer repurchase agreements and federal funds purchased |  | $ | 44,333 |  |  |  | 0.51 | % |  | $ | 73,237 |  |  |  | 0.27 | % |  | $ | 73,237 |  |  |  | 0.27 | %
Federal Home Loan Bank – current portion |  |  | 192,131 |  |  |  | 2.02 | % |  |  | 65,416 |  |  |  | 1.13 | % |  |  | 65,416 |  |  |  | 1.13 | %
Total |  | $ | 236,464 |  |  |  |  |  |  | $ | 138,653 |  |  |  |  |  |  | $ | 138,653 |  |  |  |  |
Maximum Month-end Balance: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer repurchase agreements and federal funds purchased |  | $ | 72,141 |  |  |  | 0.32 | % |  | $ | 85,614 |  |  |  | 0.29 | % |  | $ | 85,614 |  |  |  | 0.29 | %
Federal Home Loan Bank – current portion |  |  | 325,000 |  |  |  | 1.62 | % |  |  | 325,000 |  |  |  | 1.48 | % |  |  | 325,000 |  |  |  | 1.48 | %
Total |  | $ | 397,141 |  |  |  |  |  |  | $ | 410,614 |  |  |  |  |  |  | $ | 410,614 |  |  |  |  |
Long-term: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
At Year-End: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subordinated Notes |  |  | 220,000 |  |  |  | 5.42 | % |  |  | 220,000 |  |  |  | 5.42 | % |  |  | 220,000 |  |  |  | 5.42 | %
Average Daily Balance: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subordinated Notes |  |  | 220,000 |  |  |  | 5.42 | % |  |  | 220,000 |  |  |  | 5.42 | % |  |  | 220,000 |  |  |  | 5.42 | %
Total |  | $ | 220,000 |  |  |  |  |  |  | $ | 220,000 |  |  |  |  |  |  | $ | 220,000 |  |  |  |  |
Maximum Month-end Balance: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subordinated Notes |  |  | 220,000 |  |  |  | 5.42 | % |  |  | 220,000 |  |  |  | 5.42 | % |  |  | 220,000 |  |  |  | 5.42 | %
Total |  | $ | 220,000 |  |  |  |  |  |  | $ | 220,000 |  |  |  |  |  |  | $ | 220,000 |  |  |  |  |

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