PENSION AND POSTRETIREMENT PLANS Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Defined Benefit Plan Disclosure [Line Items]
Contribution to the plan		$ 1,700	$ 2,200
Reclassification of net periodic benefit credit components other than service cost from salaries and employee benefits expense to operating expense	$ 196		587
SERP Benefits
Defined Benefit Plan Disclosure [Line Items]
Distribution from the plan		$ 84	$ 84