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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract] |
Changes in Carrying Amount of Goodwill | The following table presents the changes in the carrying amount of goodwill for the years indicated:
|  | As of And for the Year Ended December 31, |
|  | 2014 |  |  | 2013 |
|  | (Dollars in thousands) |
Balance, beginning of period |  | $ | 55,097 |  |  | $ | 55,097 |
Addition from the ASB acquisition |  |  | 19,147 |  |  |  | — |
Balance, end of period |  | $ | 74,244 |  |  | $ | 55,097 |
Summary of Amortizable Intangible Assets | The following summarizes activity of amortizable core deposit intangible (“CDI”) assets for the years ended December 31, 2014 and 2013:
|  | As of And For the Year Ended December 31, |
|  | 2014 |  |  | 2013 |
|  | Gross CDI Amount |  |  | Accumulated Amortization |  |  | Net CDI Amount |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net CDI Amount |
|  | (Dollars in thousands) |  |  |  |
Balance of intangible assets, beginning of period |  | $ | 31,999 |  |  | $ | (29,738 | ) |  | $ | 2,261 |  |  | $ | 31,999 |  |  | $ | (28,610 | ) |  | $ | 3,389 |
Additions due to acquisitions |  |  | 2,090 |  |  |  |  |  |  |  |  |  |  |  | — |  |  |  |  |  |  |  |  |
Balance of intangible assets, end of period |  | $ | 34,089 |  |  | $ | (30,875 | ) |  | $ | 3,214 |  |  | $ | 31,999 |  |  | $ | (29,738 | ) |  | $ | 2,261 |
Aggregate amortization expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
For year ended December 31, |  | $ | 1,137 |  |  |  |  |  |  |  |  |  |  | $ | 1,127 |  |  |  |  |  |  |  |  |
Estimated Amortization Expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
For the year ended December 31, 2015 |  | $ | 949 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
For the year ended December 31, 2016 |  |  | 737 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
For the year ended December 31, 2017 |  |  | 631 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
For the year ended December 31, 2018 |  |  | 562 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
For the year ended December 31, 2019 |  |  | 335 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Thereafter |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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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 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 Reference 2: 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=26713463&loc=d3e16323-109275 + 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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