Annual report pursuant to Section 13 and 15(d)

BENEFIT PLANS - Weighted Average Assumptions (Details)

v3.6.0.2
BENEFIT PLANS - Weighted Average Assumptions (Details)
3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Dec. 31, 2016
Dec. 31, 2015
Pension Benefits        
Weighted-average assumptions used to determine benefit obligations        
Discount rate 4.54%   4.38% 4.54%
Weighted-average assumptions used to determine net periodic benefit cost        
Discount Rate     4.54% 4.12%
Long-term Return on Assets     6.75% 7.00%
Post-Retirement Benefits        
Weighted-average assumptions used to determine benefit obligations        
Discount rate 3.81%   3.64% 3.81%
Weighted-average assumptions used to determine net periodic benefit cost        
Discount Rate 3.77% 3.72% 3.81% 3.73%