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GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS (Tables) | 12 Months Ended
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Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Intangible Assets and Goodwill | The following table sets forth the carrying value of goodwill and other intangible assets, net of accumulated amortization, at December 31:
| 2016 |  | 2015
| (Dollars in thousands)
Balances not subject to amortization |  |  |
Goodwill | $ | 221,526 |  |  | $ | 201,083 |
Balances subject to amortization |  |  |
Core deposit intangibles | 8,527 |  |  | 10,264 |
Other intangible assets | 1,321 |  |  | 1,562 |
Total other intangible assets | 9,848 |  |  | 11,826 |
Total goodwill and other intangible assets | $ | 231,374 |  |  | $ | 212,909 |
Schedule of Goodwill | The changes in the carrying value of goodwill for the periods indicated were as follows:
| 2016 |  | 2015
| (Dollars in thousands)
Balance at beginning of year | $ | 201,083 |  |  | $ | 170,421 |
Acquisitions | 20,443 |  |  | 30,662 |
Balance at end of year | $ | 221,526 |  |  | $ | 201,083 |
Schedule of Other Intangible Assets | The gross carrying amount and accumulated amortization of other intangible assets were as follows at the periods indicated:
| December 31
| 2016 |  | 2015
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
| (Dollars in thousands)
Core deposit intangibles | $ | 23,917 |  |  | $ | (15,390 | ) |  | $ | 8,527 |  |  | $ | 23,367 |  |  | $ | (13,103 | ) |  | $ | 10,264 |
Other intangible assets | 3,020 |  |  | (1,699 | ) |  | 1,321 |  |  | 3,051 |  |  | (1,489 | ) |  | 1,562 |
Total | $ | 26,937 |  |  | $ | (17,089 | ) |  | $ | 9,848 |  |  | $ | 26,418 |  |  | $ | (14,592 | ) |  | $ | 11,826 |
Schedule of Intangible Assets Estimated Annual Amortization Expense | The following table sets forth the estimated annual amortization expense of intangible assets for each of the next five years:
Year | Amount
| (Dollars in thousands)
2017 | $ | 3,002 |
2018 | $ | 1,888 |
2019 | $ | 1,232 |
2020 | $ | 1,035 |
2021 | $ | 939 |

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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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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + 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 + Details
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