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PLEDGED ASSETS (Tables)
3 Months Ended
Mar. 31, 2017
Guarantees [Abstract]  
Securities and loans pledged to secure public and trust deposits, securities sold under agreements to repurchase, FHLBB advances and credit facilities available
(in thousands)    March 31, 2017      December 31, 2016  
Securities available-for-sale (at fair value)  $63,904   $63,833 
Loans receivable   137,500    137,117 
Total pledged assets  $201,404   $200,950