Goodwill and Other Intangibles Other Intangibles (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Asset Value, Beginning of Period	$ 461,685
Acquisitions	47,189
Foreign currency translation adjustments and other	28,662
Gross Asset Value, End of Period	537,536
Accumulated Amortization, Beginning of Period	(107,121)
Amortization	(11,589)
Foreign currency translation adjustments and other	(1,046)
Accumulated Amortization, End of Period	(119,756)
Net Book Value	417,780	$ 354,564
Customer lists and relationships
Finite-Lived Intangible Assets [Line Items]
Gross Asset Value, Beginning of Period	387,893
Acquisitions	1,717
Foreign currency translation adjustments and other	21,044
Gross Asset Value, End of Period	410,654
Accumulated Amortization, Beginning of Period	(49,165)
Amortization	(9,716)
Foreign currency translation adjustments and other	(2,594)
Accumulated Amortization, End of Period	(61,475)
Net Book Value	349,179	338,728
Trade names and trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Asset Value, Beginning of Period	16,514
Acquisitions	0
Foreign currency translation adjustments and other	649
Gross Asset Value, End of Period	17,163
Accumulated Amortization, Beginning of Period	(7,952)
Amortization	0
Foreign currency translation adjustments and other	(213)
Accumulated Amortization, End of Period	(8,165)
Net Book Value	8,998	8,562
Patents and technology
Finite-Lived Intangible Assets [Line Items]
Gross Asset Value, Beginning of Period	38,434
Acquisitions	25,555
Foreign currency translation adjustments and other	1,956
Gross Asset Value, End of Period	65,945
Accumulated Amortization, Beginning of Period	(31,683)
Amortization	(830)
Foreign currency translation adjustments and other	(1,288)
Accumulated Amortization, End of Period	(33,801)
Net Book Value	32,144	6,751
Other
Finite-Lived Intangible Assets [Line Items]
Gross Asset Value, Beginning of Period	18,844
Acquisitions	19,917
Foreign currency translation adjustments and other	5,013
Gross Asset Value, End of Period	43,774
Accumulated Amortization, Beginning of Period	(18,321)
Amortization	(1,043)
Foreign currency translation adjustments and other	3,049
Accumulated Amortization, End of Period	(16,315)
Net Book Value	$ 27,459	$ 523