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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)
12 Months Ended
Dec. 31, 2016
USD ($)
item
shares
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Historical loss experience period 5 years    
Additional allowance for loan losses $ 108,000 $ 543,000  
Percentage of loans originated in amounts of the appraised value of the property 80.00%    
Mortgage title insurance requirement threshold for second mortgages $ 100,000    
Unfunded commitments 3,680,000    
Impairment $ 0    
Estimated useful life 10 years    
Service period 3 years    
Penalties and/or interest expense $ 0 $ 0 $ 0
Vermont      
Number of locations | item 31    
Massachusetts      
Number of locations | item 1    
Regional Federal Home Loan Banks      
Number of locations | item 12    
Required percentage of aggregate principal amount of unpaid residential mortgage loans 0.35%    
Minimum      
Investments in real estate limited partnerships, percentage 5.36%    
Maximum      
Investments in real estate limited partnerships, percentage 99.90%    
2008 Stock Incentive Plan      
Shares authorized for issuance under the Plan | shares 600,000