Acquisitions and Dispositions (Acquired Intangible Assets and Weighted Average Amortization Periods) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2015 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, Total	$ 64,359
Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, Total	$ 9,246
Acquired intangible assets, Weighted Average Life	15 years
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, Total	$ 44,402
Acquired intangible assets, Weighted Average Life	12 years
Unpatented technology
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, Total	$ 10,711
Acquired intangible assets, Weighted Average Life	8 years