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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