Pension (Contributions to Pension Plans) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Estimated contributions in 2016	$ 2,513
Employer contributions	10,548	$ 6,361
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Estimated contributions in 2016	125
Employer contributions	96	2,653
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Estimated contributions in 2016	2,388
Employer contributions	10,452	$ 3,708
Netherlands Plan
Defined Benefit Plan Disclosure [Line Items]
Employer contributions due to the unwinding of Dutch defined benefit pension plan	$ 5,200