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Goodwill and Other Intangible Assets | 6 Months Ended
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Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Other Intangible Assets | Goodwill and Other Intangible Assets (In Thousands) The carrying amounts of goodwill by operating segments for the six months ended June 30, 2017 were as follows:
| Community Banks |  | Insurance |  | Total
Balance at January 1, 2017 | $ | 467,767 |  |  | $ | 2,767 |  |  | $ | 470,534 |
Addition to goodwill from acquisition | — |  |  | — |  |  | — |
Adjustment to previously recorded goodwill | — |  |  | — |  |  | — |
Balance at June 30, 2017 | $ | 467,767 |  |  | $ | 2,767 |  |  | $ | 470,534 |
There were no adjustments to goodwill during the six months ended June 30, 2017. The following table provides a summary of finite-lived intangible assets as of the dates presented:
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
June 30, 2017 |  |  |  |  |
Core deposit intangibles | $ | 47,992 |  |  | $ | (28,178 | ) |  | $ | 19,814 |
Customer relationship intangible | 1,970 |  |  | (766 | ) |  | 1,204 |
Total finite-lived intangible assets | $ | 49,962 |  |  | $ | (28,944 | ) |  | $ | 21,018 |
December 31, 2016 |  |  |  |  |
Core deposit intangibles | $ | 47,992 |  |  | $ | (25,188 | ) |  | $ | 22,804 |
Customer relationship intangible | 1,970 |  |  | (700 | ) |  | 1,270 |
Total finite-lived intangible assets | $ | 49,962 |  |  | $ | (25,888 | ) |  | $ | 24,074 |
Current year amortization expense for finite-lived intangible assets is presented in the table below.
| Three Months Ended |  | Six Months Ended
| June 30, |  | June 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
Amortization expense for: |  |  |  |  |  |  |
Core deposit intangibles | $ | 1,460 |  |  | $ | 1,709 |  |  | $ | 2,990 |  |  | $ | 3,373 |
Customer relationship intangible | 33 |  |  | 33 |  |  | 66 |  |  | 66 |
Total intangible amortization | $ | 1,493 |  |  | $ | 1,742 |  |  | $ | 3,056 |  |  | $ | 3,439 |
The estimated amortization expense of finite-lived intangible assets for the year ending December 31, 2017 and the succeeding four years is summarized as follows:
| Core Deposit Intangibles |  | Customer Relationship Intangible |  | Total
2017 | $ | 5,723 |  |  | $ | 131 |  |  | $ | 5,854 |
2018 | 4,881 |  |  | 131 |  |  | 5,012 |
2019 | 4,101 |  |  | 131 |  |  | 4,232 |
2020 | 3,213 |  |  | 131 |  |  | 3,344 |
2021 | 2,273 |  |  | 131 |  |  | 2,404 |

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- Definition The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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