GOODWILL AND INTANGIBLE ASSETS - Acquired Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Other Intangible Assets
Gross Carrying Amount	$ 1,377		$ 1,377
Accumulated Amortization	264		221
Net Carrying Amount	1,113		1,156
Amortization	43	$ 51
Core deposit intangible
Other Intangible Assets
Gross Carrying Amount	1,377		1,377
Accumulated Amortization	264		221
Net Carrying Amount	1,113		1,156
Amortization	$ 43		$ 51