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Pension Plan (Assumptions) (Details) - Pension Benefits [Member]
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]    
Weighted average discount rate used to determine the accrued benefit obligations 3.90% 3.80%
Discount rate used to determine the net pension expense 3.80% 4.60%
Expected long-term rate on plan assets 6.50% 6.50%