Employee Benefit Plans Accumulated Other Comprehensive Income Next Fixal Year (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)
Defined Benefit Plan, Amount to be Amortized from Accumulated Other Comprehensive Income (Loss) Next Fiscal Year [Abstract]
Actuarial loss (gain)	$ 1,780
Pension Plans [Member]
Defined Benefit Plan, Amount to be Amortized from Accumulated Other Comprehensive Income (Loss) Next Fiscal Year [Abstract]
Actuarial loss (gain)	1,855
Postretirement Benefits [Member]
Defined Benefit Plan, Amount to be Amortized from Accumulated Other Comprehensive Income (Loss) Next Fiscal Year [Abstract]
Actuarial loss (gain)	$ (75)