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GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Additional Information (Detail) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 USD ($) Branch | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) Subsidiary | Dec. 31, 2012 USD ($)
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Goodwill | $ 39,244 | $ 31,591 | $ 30,143 | $ 7,048
Impairment on intangible assets | $ 258 | 48 | $ 1,061 |
Number of branch locations sold | Branch | 2 |  |  |
Number of banking subsidiaries merged into a single bank | Subsidiary |  |  | 2 |
Aggregate amortization expense | $ 5,836 | 4,079 | $ 2,651 |
Banking |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Goodwill | 37,100 |  |  |
Mortgage Banking |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Goodwill | $ 2,100 |  |  |
Core deposit intangibles |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Weighted average amortization period | 7 years 4 months 13 days |  |  |
Impairment on intangible assets | $ 258 | $ 48 | 85 |
Core deposit intangibles | Minimum |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Amortization period of other intangible assets | 4 years |  |  |
Core deposit intangibles | Maximum |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Amortization period of other intangible assets | 10 years |  |  |
Customer relationship intangible |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Amortization period of other intangible assets | 5 years |  |  |
Remaining amortization period | 3 years 29 days |  |  |
Trade name intangibles |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Impairment on intangible assets |  |  | $ 976 |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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