Pension (Amounts Recognized in Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Non-current asset	$ 977	$ 848
Current liability	2,297	1,488
Long-term liability	44,274	56,462
Defined Benefit Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Non-current asset	977	848
Current liability	2,297	1,488
Long-term liability	44,274	56,462
Net accrued benefit liability	(45,594)	$ (57,102)
Netherlands [Member]
Defined Benefit Plan Disclosure [Line Items]
Net accrued benefit liability	$ 0