EMPLOYEE BENEFIT PLANS (Details 4)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
ACCUMULATED BENEFIT OBLIGATION
Discount rate (as a percent)	4.45%	4.70%	4.15%
NET BENEFIT COST
Discount rate (as a percent)	4.70%	4.15%	5.20%
Expected return on plan assets (as a percent)	7.00%	7.00%	7.00%