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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | Goodwill. Year-end goodwill was as follows:
| 2016 |  | 2015
Goodwill | $ | 654,952 |  |  | $ | 654,668 |
Schedule of Other Intangible Assets | Other Intangible Assets. Year-end other intangible assets were as follows:
| Gross Intangible Assets |  | Accumulated Amortization |  | Net Intangible Assets
2016 |  |  |  |  |
Core deposits | $ | 9,300 |  |  | $ | (4,002 | ) |  | $ | 5,298 |
Customer relationships | 6,102 |  |  | (4,692 | ) |  | 1,410 |
Non-compete agreements | 74 |  |  | (6 | ) |  | 68 |
| $ | 15,476 |  |  | $ | (8,700 | ) |  | $ | 6,776 |
2015 |  |  |  |  |
Core deposits | $ | 39,410 |  |  | $ | (32,324 | ) |  | $ | 7,086 |
Customer relationships | 5,771 |  |  | (4,214 | ) |  | 1,557 |
Non-compete agreements | 725 |  |  | (568 | ) |  | 157 |
| $ | 45,906 |  |  | $ | (37,106 | ) |  | $ | 8,800 |
Estimated Aggregate Future Amortization Expense for Intangible Assets | The estimated aggregate future amortization expense for intangible assets remaining as of December 31, 2016 is as follows:
2017 | $ | 1,703 |
2018 | 1,424 |
2019 | 1,167 |
2020 | 918 |
2021 | 697 |
Thereafter | 867 |
| $ | 6,776 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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