FAIR VALUE - IMPAIRED LOANS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Dec. 31, 2016
Impaired loans
Carrying amount of loans measured at fair value	$ 26,794		$ 26,794	$ 31,268
Valuation allowance	(4,484)		(4,484)	(4,925)
Nonrecurring basis
Impaired loans
Total fair value	7,421		7,421	7,864
Provision for impairment on loan, lease and other losses
Provisions on collateral-dependent, impaired loans	118	$ 47	190	92
Fair Value, Inputs, Level 3 | Nonrecurring basis
Impaired loans
Carrying amount of loans measured at fair value	6,652		6,652	6,963
Estimated selling costs considered in carrying amount	843		843	936
Valuation allowance	(74)		(74)	(35)
Total fair value	$ 7,421		$ 7,421	$ 7,864