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FAIR VALUE DISCLOSURES - Summary of Assets Measured at Estimated Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | $ 376,436 | $ 376,199
Fair Value, Measurements, Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 376,436 | 376,199
Fair Value, Measurements, Recurring | Debt Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 376,360 | 376,132
Fair Value, Measurements, Recurring | Debt Securities | U.S. Government Agencies |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 45,609 | 23,958
Fair Value, Measurements, Recurring | Debt Securities | States and political subdivisions |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 98,388 | 52,401
Fair Value, Measurements, Recurring | Debt Securities | U.S. Government Sponsored Enterprises (GSE) residential mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 140,965 | 175,596
Fair Value, Measurements, Recurring | Debt Securities | GSE residential collateralized mortgage obligations (CMOs) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 21,502 | 58,705
Fair Value, Measurements, Recurring | Debt Securities | GSE commercial CMOs |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 69,896 | 65,472
Fair Value, Measurements, Recurring | Equity Securities | Equity securities - financial services |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 76 | 67
Level 1 | Fair Value, Measurements, Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 0 | 0
Level 1 | Fair Value, Measurements, Recurring | Debt Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 0 | 0
Level 1 | Fair Value, Measurements, Recurring | Debt Securities | U.S. Government Agencies |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 0 | 0
Level 1 | Fair Value, Measurements, Recurring | Debt Securities | States and political subdivisions |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 0 | 0
Level 1 | Fair Value, Measurements, Recurring | Debt Securities | U.S. Government Sponsored Enterprises (GSE) residential mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 0 | 0
Level 1 | Fair Value, Measurements, Recurring | Debt Securities | GSE residential collateralized mortgage obligations (CMOs) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 0 | 0
Level 1 | Fair Value, Measurements, Recurring | Debt Securities | GSE commercial CMOs |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 0 | 0
Level 1 | Fair Value, Measurements, Recurring | Equity Securities | Equity securities - financial services |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 0 | 0
Level 2 | Fair Value, Measurements, Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 376,436 | 376,199
Level 2 | Fair Value, Measurements, Recurring | Debt Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 376,360 | 376,132
Level 2 | Fair Value, Measurements, Recurring | Debt Securities | U.S. Government Agencies |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 45,609 | 23,958
Level 2 | Fair Value, Measurements, Recurring | Debt Securities | States and political subdivisions |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 98,388 | 52,401
Level 2 | Fair Value, Measurements, Recurring | Debt Securities | U.S. Government Sponsored Enterprises (GSE) residential mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 140,965 | 175,596
Level 2 | Fair Value, Measurements, Recurring | Debt Securities | GSE residential collateralized mortgage obligations (CMOs) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 21,502 | 58,705
Level 2 | Fair Value, Measurements, Recurring | Debt Securities | GSE commercial CMOs |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 69,896 | 65,472
Level 2 | Fair Value, Measurements, Recurring | Equity Securities | Equity securities - financial services |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 76 | 67
Level 3 | Fair Value, Measurements, Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 0 | 0
Level 3 | Fair Value, Measurements, Recurring | Debt Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 0 | 0
Level 3 | Fair Value, Measurements, Recurring | Debt Securities | U.S. Government Agencies |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 0 | 0
Level 3 | Fair Value, Measurements, Recurring | Debt Securities | States and political subdivisions |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 0 | 0
Level 3 | Fair Value, Measurements, Recurring | Debt Securities | U.S. Government Sponsored Enterprises (GSE) residential mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 0 | 0
Level 3 | Fair Value, Measurements, Recurring | Debt Securities | GSE residential collateralized mortgage obligations (CMOs) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 0 | 0
Level 3 | Fair Value, Measurements, Recurring | Debt Securities | GSE commercial CMOs |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | 0 | 0
Level 3 | Fair Value, Measurements, Recurring | Equity Securities | Equity securities - financial services |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale | $ 0 | $ 0

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