Goodwill and Intangible Assets (Weighted Average Amortization Period by Intangible Asset Class) (Details)	9 Months Ended
	Sep. 30, 2017
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	9 years 1 month 6 days
Trademarks and patents
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	7 years 3 months 18 days
Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	6 years 1 month 6 days
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	10 years 4 months 24 days
Covenant-not-to-compete
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	3 years 4 months 24 days