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GOODWILL (Tables) | 6 Months Ended
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Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Changes in Carrying Amount of Goodwill |
(Dollars in thousands) | June 30, 2018 |  | December 31, 2017
Balance at beginning of year | $ | 204,084 |  |  | $ | 204,084 |
Goodwill resulting from business combinations | 678,941 |  |  | 0 |
Balance at end of period | $ | 883,025 |  |  | $ | 204,084 |

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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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