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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Impaired Intangible Assets [Abstract]      
Estimated useful life 10 years    
Allowance for loan losses      
Potential charge-off of loan upon principal or interest default, period one 90 days    
Potential charge-off of loan upon principal or interest default, period two 120 days    
Potential charge-off of loan upon principal or interest default, period three 180 days    
Balance of loans individually evaluated for impairment $ 6,201,000us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment $ 8,858,000us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment $ 8,208,000us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Balance of loans collectively evaluated for impairment 1,316,876,000us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment 1,001,257,000us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment 788,364,000us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Minimum      
Allowance for loan losses      
Balance of loans individually evaluated for impairment 50,000us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Maximum      
Allowance for loan losses      
Balance of loans collectively evaluated for impairment $ 50,000us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_RangeAxis
= us-gaap_MaximumMember