Pension and Other Postretirement Benefit Plans Schedule of Expected Benefit Payments (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year	$ 1,800
Defined Benefit Plan, Expected Future Benefit Payments in Year One	1,020
Defined Benefit Plan, Expected Future Benefit Payments in Year Two	1,148
Defined Benefit Plan, Expected Future Benefit Payments in Year Three	1,182
Defined Benefit Plan, Expected Future Benefit Payments in Year Four	1,201
Defined Benefit Plan, Expected Future Benefit Payments in Year Five	1,317
Defined Benefit Plan, Expected Future Benefit Payments in Five Fiscal Years Thereafter	$ 7,877