INVESTMENTS (Schedule of Amortized Cost and Fair Value of Other Investments) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Equity securities - bank stock, Amortized Cost	$ 544
Equity securities - bank stock, Unrealized Gains	239
Equity securities - bank stock, Unrealized Losses	0
Equity securities - bank stock, Fair Value	783
FHLBB (carried at cost)	10,744		$ 18,296
FRB (carried at cost)	5,374		5,374
Other Investments, Amortized Cost	16,662		23,670
Other Investments, Unrealized Gain	239	$ 0
Other Investments, Unrealized Loss	0	$ 0
Other Investments, Fair Value	$ 16,901		$ 23,670