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Benefit Plans - Key Assumptions for Projected Benefit Obligation and Net Periodic Benefit Cost (Details)
9 Months Ended
Sep. 30, 2016
Jul. 14, 2016
Projected benefit obligation:    
Discount rate   3.80%
Rate of compensation increase   4.03%
Net periodic benefit costs:    
Discount rate 3.80%  
Expected long-term rate of return 7.00%  
Rate of compensation increase 4.03%