Goodwill and Other Intangibles - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Intangible Assets [Line Items]
Amortization of other intangible assets	$ 25,079	$ 19,039	$ 16,900
Minimum
Other Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	5 years
Maximum
Other Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	25 years
Customer lists and relationships
Other Intangible Assets [Line Items]
Amortization of other intangible assets	$ 21,288	18,034
Customer lists and relationships | Minimum
Other Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	13 years
Customer lists and relationships | Maximum
Other Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	25 years
Trademarks and Trade Names
Other Intangible Assets [Line Items]
Amortization of other intangible assets	$ 0	0
Patents and technology
Other Intangible Assets [Line Items]
Amortization of other intangible assets	$ 1,412	574
Patents and technology | Minimum
Other Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	17 years
Patents and technology | Maximum
Other Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	20 years
Other
Other Intangible Assets [Line Items]
Amortization of other intangible assets	$ 2,379	431
Other | Minimum
Other Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	5 years
Other | Maximum
Other Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	25 years
Amortized using the pattern of economic benefit method
Other Intangible Assets [Line Items]
Amortization of other intangible assets	$ 17,700	15,900
Discontinued operations
Other Intangible Assets [Line Items]
Amortization of other intangible assets		$ 26,300	$ 60,400