DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS - Fair value measurements of assets on recurring basis (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Available-for-sale securities
Investment securities available for sale	$ 121,572	$ 113,770
Fair Value | Fair Value, Measurements, Recurring
Available-for-sale securities
Investment securities available for sale	121,572	113,770
Fair Value | Fair Value, Measurements, Recurring | Federal agencies
Available-for-sale securities
Investment securities available for sale	38,644	43,409
Fair Value | Fair Value, Measurements, Recurring | State and municipal
Available-for-sale securities
Investment securities available for sale	35,115	31,162
Fair Value | Fair Value, Measurements, Recurring | Government-sponsored enterprise (GSE) residential mortgage-backed and other asset-backed agency securities
Available-for-sale securities
Investment securities available for sale	45,047	36,022
Fair Value | Fair Value, Measurements, Recurring | Corporate
Available-for-sale securities
Investment securities available for sale	2,766	3,177
Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring
Available-for-sale securities
Investment securities available for sale
Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring | Federal agencies
Available-for-sale securities
Investment securities available for sale
Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring | State and municipal
Available-for-sale securities
Investment securities available for sale
Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring | 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 Using Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring | Corporate
Available-for-sale securities
Investment securities available for sale
Fair Value Measurements Using Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring
Available-for-sale securities
Investment securities available for sale	120,304	112,573
Fair Value Measurements Using Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Federal agencies
Available-for-sale securities
Investment securities available for sale	38,644	43,409
Fair Value Measurements Using Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | State and municipal
Available-for-sale securities
Investment securities available for sale	35,115	31,162
Fair Value Measurements Using Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Government-sponsored enterprise (GSE) residential mortgage-backed and other asset-backed agency securities
Available-for-sale securities
Investment securities available for sale	45,047	36,022
Fair Value Measurements Using Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Corporate
Available-for-sale securities
Investment securities available for sale	1,498	1,980
Fair Value Measurements Using Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring
Available-for-sale securities
Investment securities available for sale	1,268	1,197
Fair Value Measurements Using Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | Federal agencies
Available-for-sale securities
Investment securities available for sale
Fair Value Measurements Using Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | State and municipal
Available-for-sale securities
Investment securities available for sale
Fair Value Measurements Using Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | 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 Using Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | Corporate
Available-for-sale securities
Investment securities available for sale	$ 1,268	$ 1,197