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GOODWILL AND OTHER INTANGIBLE ASSETS | 9 Months Ended
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Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract] |
GOODWILL AND OTHER INTANGIBLE ASSETS | NOTE 11 — GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill As of both September 30, 2015 and December 31, 2014, the carrying amount of goodwill was $469.4 million. Goodwill is tested for impairment on an annual basis as of December 31, or more frequently as events occur or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. The Company’s reporting units are equivalent to the Company’s operating segments. For additional information regarding the Company’s operating segments, refer to Note 14 — Business Segments to the Consolidated Financial Statements, presented elsewhere in this report. The Company records impairment write-downs as charges to noninterest expense and adjustments to the carrying value of goodwill. Subsequent reversals of goodwill impairment are prohibited. The Company performed its annual impairment test as of December 31, 2014 and determined that there was no goodwill impairment as of December 31, 2014 as the fair values of all reporting units exceeded the then current carrying amounts of the goodwill. There were no triggering events during the nine months ended September 30, 2015 and therefore no additional goodwill impairment test was performed. No assurance can be given that goodwill will not be written down in future periods. Refer to Note 11 — Goodwill and Other Intangible Assets in Item 8 of the Company’s 2014 Form 10-K for additional details related to the Company’s annual goodwill impairment analysis. Premiums on Acquired Deposits Premiums on acquired deposits represent the intangible value of depositor relationships resulting from deposit liabilities assumed in various acquisitions. These intangibles are tested for impairment on an annual basis, or more frequently as events occur, or as current circumstances and conditions warrant. As of both September 30, 2015 and December 31, 2014, the gross carrying amount of premiums on acquired deposits was $108.8 million. The related accumulated amortization totaled $70.5 million and $63.5 million, as of September 30, 2015 and December 31, 2014, respectively. The Company amortizes premiums on acquired deposits based on the projected useful lives of the related deposits. Amortization expense of premiums on acquired deposits was $2.3 million and $2.6 million for the three months ended September 30, 2015 and 2014, respectively. Amortization expense of premiums on acquired deposits was $7.0 million and $7.7 million for the nine months ended September 30, 2015 and 2014, respectively. The Company did not record any impairment write-downs on deposit premiums for the three and nine months ended September 30, 2015 and 2014. The following table presents the estimated future amortization expense of premiums on acquired deposits for the succeeding five years:
Estimated Future Amortization Expense of Premiums on Acquired Deposits |  | Amount
|  | ($ in thousands)
Three months ended December 31, 2015 |  | $ | 2,196 |
Year ended December 31, 2016 |  | 8,086 |
Year ended December 31, 2017 |  | 6,935 |
Year ended December 31, 2018 |  | 5,883 |
Year ended December 31, 2019 |  | 4,864 |
Year ended December 31, 2020 |  | 3,846 |
Total |  | $ | 31,810 |

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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 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 Reference 4: 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 5: 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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