FAIR VALUE - IMPAIRED LOANS (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Impaired loans
Carrying amount of loans measured at fair value	$ 28,914	$ 31,268
Valuation allowance	(4,901)	(4,925)
Nonrecurring basis
Impaired loans
Total fair value	7,220	7,864
Provision for impairment on loan, lease and other losses
Provision for Impaired Loans Collateral Dependent	8	215
Fair Value, Inputs, Level 3 | Nonrecurring basis
Impaired loans
Carrying amount of loans measured at fair value	6,435	6,963
Estimated selling costs considered in carrying amount	813	936
Valuation allowance	(28)	(35)
Total fair value	$ 7,220	$ 7,864