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DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS - Fair value measurements of assets and liabilities on recurring basis (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Available-for-sale securities    
Investment securities available-for-sale $ 135,120us-gaap_AvailableForSaleSecurities $ 128,885us-gaap_AvailableForSaleSecurities
Fair Value, Measurements, Recurring | Fair Value    
Available-for-sale securities    
Investment securities available-for-sale 135,120us-gaap_AvailableForSaleSecurities
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Fair Value, Measurements, Recurring | Fair Value | Federal agencies    
Available-for-sale securities    
Investment securities available-for-sale 32,018us-gaap_AvailableForSaleSecurities
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Fair Value, Measurements, Recurring | Fair Value | State and municipal    
Available-for-sale securities    
Investment securities available-for-sale 44,731us-gaap_AvailableForSaleSecurities
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Fair Value, Measurements, Recurring | Fair Value | Government-sponsored enterprise (GSE) residential mortgage-backed and other asset-backed agency securities    
Available-for-sale securities    
Investment securities available-for-sale 55,077us-gaap_AvailableForSaleSecurities
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Fair Value, Measurements, Recurring | Fair Value | Corporate    
Available-for-sale securities    
Investment securities available-for-sale 3,294us-gaap_AvailableForSaleSecurities
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Fair Value, Measurements, Recurring | Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets (Level 1)    
Available-for-sale securities    
Investment securities available-for-sale      
Fair Value, Measurements, Recurring | Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets (Level 1) | Federal agencies    
Available-for-sale securities    
Investment securities available-for-sale      
Fair Value, Measurements, Recurring | Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets (Level 1) | State and municipal    
Available-for-sale securities    
Investment securities available-for-sale      
Fair Value, Measurements, Recurring | Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets (Level 1) | Government-sponsored enterprise (GSE) residential mortgage-backed and other asset-backed agency securities    
Available-for-sale securities    
Investment securities available-for-sale      
Fair Value, Measurements, Recurring | Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate    
Available-for-sale securities    
Investment securities available-for-sale      
Fair Value, Measurements, Recurring | Fair Value Measurements Using Significant Other Observable Inputs (Level 2)    
Available-for-sale securities    
Investment securities available-for-sale 133,827us-gaap_AvailableForSaleSecurities
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Fair Value, Measurements, Recurring | Fair Value Measurements Using Significant Other Observable Inputs (Level 2) | Federal agencies    
Available-for-sale securities    
Investment securities available-for-sale 32,018us-gaap_AvailableForSaleSecurities
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Fair Value, Measurements, Recurring | Fair Value Measurements Using Significant Other Observable Inputs (Level 2) | State and municipal    
Available-for-sale securities    
Investment securities available-for-sale 44,731us-gaap_AvailableForSaleSecurities
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Fair Value, Measurements, Recurring | Fair Value Measurements Using Significant Other Observable Inputs (Level 2) | Government-sponsored enterprise (GSE) residential mortgage-backed and other asset-backed agency securities    
Available-for-sale securities    
Investment securities available-for-sale 55,077us-gaap_AvailableForSaleSecurities
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Fair Value, Measurements, Recurring | Fair Value Measurements Using Significant Other Observable Inputs (Level 2) | Corporate    
Available-for-sale securities    
Investment securities available-for-sale 2,001us-gaap_AvailableForSaleSecurities
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Fair Value, Measurements, Recurring | Fair Value Measurements Using Significant Unobservable Inputs (Level 3)    
Available-for-sale securities    
Investment securities available-for-sale 1,293us-gaap_AvailableForSaleSecurities
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Fair Value, Measurements, Recurring | Fair Value Measurements Using Significant Unobservable Inputs (Level 3) | Federal agencies    
Available-for-sale securities    
Investment securities available-for-sale      
Fair Value, Measurements, Recurring | Fair Value Measurements Using Significant Unobservable Inputs (Level 3) | State and municipal    
Available-for-sale securities    
Investment securities available-for-sale      
Fair Value, Measurements, Recurring | Fair Value Measurements Using Significant Unobservable Inputs (Level 3) | Government-sponsored enterprise (GSE) residential mortgage-backed and other asset-backed agency securities    
Available-for-sale securities    
Investment securities available-for-sale      
Fair Value, Measurements, Recurring | Fair Value Measurements Using Significant Unobservable Inputs (Level 3) | Corporate    
Available-for-sale securities    
Investment securities available-for-sale $ 1,293us-gaap_AvailableForSaleSecurities
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