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EMPLOYEE BENEFIT PLANS - Schedule of Assumptions Used (Details)
12 Months Ended
Dec. 31, 2016
Feb. 29, 2016
Weighted Average Assumptions Used in Calculating Benefit Obligation    
Discount rate 2.70% 4.00%
Inflation 3.30% 2.80%
Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost    
Discount rate 4.00%  
Expected long-term return on plan assets 4.90%  
Inflation 2.80%