SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE AND OTHER SHORT-TERM DEBT (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE AND OTHER SHORT-TERM DEBT [Abstract]
Borrowing capacity through unsecured borrowing lines	$ 65,000
Loans pledged to the FHLBB	371,580	$ 369,780
Additional short or long-term borrowing capacity with FHLBB	262,960	262,170
Proceeds from Issuance of Debt	17,810	15,250
Remaining borrowing capacity	$ 245,150	$ 246,920