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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2017
Accounting Policies [Abstract] |
Additional Cash Flow Information | Additional cash flow information was as follows:
| Year Ended December 31,
| 2017 |  | 2016 |  | 2015
Cash paid for interest | $ | 24,371 |  |  | $ | 11,886 |  |  | $ | 12,982 |
Cash paid for income tax | 56,359 |  |  | 50,427 |  |  | 57,086 |
Significant non-cash transactions: |  |  |  |  |
Deferred gain on sale of building and parking garage | — |  |  | 7,099 |  |  | — |
Unsettled purchases/sales of securities | 37,481 |  |  | — |  |  | 2,998 |
Loans foreclosed and transferred to other real estate owned and foreclosed assets | 279 |  |  | — |  |  | 933 |
Loans to facilitate the sale of other real estate owned | — |  |  | 753 |  |  | 20 |

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- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
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