Acquisitions and Divestitures - Acquired Intangible Assets and Weighted Average Amortization Periods (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized intangible assets	$ 188,877	$ 64,359
Indefinite lived	28,800
Total acquired intangible assets	217,677
Trade Names
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized intangible assets	$ 14,078	$ 9,247
Weighted Average Life	15 years	15 years
Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized intangible assets	$ 134,519	$ 44,401
Weighted Average Life	13 years	12 years
Unpatented technology
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized intangible assets	$ 40,280	$ 10,711
Weighted Average Life	13 years	8 years