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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)
1 Months Ended 12 Months Ended
Dec. 31, 2009
Dec. 31, 2018
Dec. 31, 2017
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   $ 19,355,000 $ 22,492,000
Residential real estate      
Allowance for loan losses      
Balance of loans individually evaluated for impairment   1,000,000  
Non-residential real estate loans      
Allowance for loan losses      
Balance of loans individually evaluated for impairment   $ 200,000  
Bridge Statutory Capital Trust II | Trust preferred securities (TPS)      
Allowance for loan losses      
Proceeds from Issuance of Trust Preferred Securities $ 16,000,000    
Distribution rate of trust preferred securities (as a percent) 8.50%