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FAIR VALUE DISCLOSURES - Summary of Assets Measured at Estimated Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | $ 394,124 | $ 376,199
Fair Value, Measurements, Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 394,124 | 376,199
Fair Value, Measurements, Recurring | Total Debt Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 394,051 | 376,132
Fair Value, Measurements, Recurring | Total Debt Securities | U.S. Government Agencies |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 47,227 | 23,958
Fair Value, Measurements, Recurring | Total Debt Securities | States and political subdivisions |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 125,961 | 52,401
Fair Value, Measurements, Recurring | Total Debt Securities | GSE residential mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 132,349 | 175,596
Fair Value, Measurements, Recurring | Total Debt Securities | GSE residential collateralized mortgage obligations (CMOs) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 15,843 | 58,705
Fair Value, Measurements, Recurring | Total Debt Securities | GSE commercial CMOs |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 63,770 | 65,472
Fair Value, Measurements, Recurring | Total Debt Securities | Private label CMOs |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 8,901 |
Fair Value, Measurements, Recurring | Equity Securities | Equity securities – financial services |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 73 | 67
Level 1 | Fair Value, Measurements, Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 0 | 0
Level 1 | Fair Value, Measurements, Recurring | Total Debt Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 0 | 0
Level 1 | Fair Value, Measurements, Recurring | Total Debt Securities | U.S. Government Agencies |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 0 | 0
Level 1 | Fair Value, Measurements, Recurring | Total Debt Securities | States and political subdivisions |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 0 | 0
Level 1 | Fair Value, Measurements, Recurring | Total Debt Securities | GSE residential mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 0 | 0
Level 1 | Fair Value, Measurements, Recurring | Total Debt Securities | GSE residential collateralized mortgage obligations (CMOs) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 0 | 0
Level 1 | Fair Value, Measurements, Recurring | Total Debt Securities | GSE commercial CMOs |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 0 | 0
Level 1 | Fair Value, Measurements, Recurring | Total Debt Securities | Private label CMOs |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 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] |  |
Total securities | 0 | 0
Level 2 | Fair Value, Measurements, Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 394,124 | 376,199
Level 2 | Fair Value, Measurements, Recurring | Total Debt Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 394,051 | 376,132
Level 2 | Fair Value, Measurements, Recurring | Total Debt Securities | U.S. Government Agencies |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 47,227 | 23,958
Level 2 | Fair Value, Measurements, Recurring | Total Debt Securities | States and political subdivisions |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 125,961 | 52,401
Level 2 | Fair Value, Measurements, Recurring | Total Debt Securities | GSE residential mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 132,349 | 175,596
Level 2 | Fair Value, Measurements, Recurring | Total Debt Securities | GSE residential collateralized mortgage obligations (CMOs) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 15,843 | 58,705
Level 2 | Fair Value, Measurements, Recurring | Total Debt Securities | GSE commercial CMOs |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 63,770 | 65,472
Level 2 | Fair Value, Measurements, Recurring | Total Debt Securities | Private label CMOs |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 8,901 |
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] |  |
Total securities | 73 | 67
Level 3 | Fair Value, Measurements, Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 0 | 0
Level 3 | Fair Value, Measurements, Recurring | Total Debt Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 0 | 0
Level 3 | Fair Value, Measurements, Recurring | Total Debt Securities | U.S. Government Agencies |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 0 | 0
Level 3 | Fair Value, Measurements, Recurring | Total Debt Securities | States and political subdivisions |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 0 | 0
Level 3 | Fair Value, Measurements, Recurring | Total Debt Securities | GSE residential mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 0 | 0
Level 3 | Fair Value, Measurements, Recurring | Total Debt Securities | GSE residential collateralized mortgage obligations (CMOs) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 0 | 0
Level 3 | Fair Value, Measurements, Recurring | Total Debt Securities | GSE commercial CMOs |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 0 | 0
Level 3 | Fair Value, Measurements, Recurring | Total Debt Securities | Private label CMOs |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total securities | 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] |  |
Total securities | $ 0 | $ 0

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