Commitments and Contingencies - Contingencies (Details) - USD ($)	3 Months Ended			12 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Loss Contingencies [Line Items]
Write-offs and adjustments				$ 9,509,000	$ 11,152,000	$ 6,045,000
Additions to goodwill through acquisitions				50,585,000
Material purchase commitments				0
Conditional Agreement
Loss Contingencies [Line Items]
Contingency accrual				2,700,000
Write-offs and adjustments			$ 7,500,000
Brinderson LP | Pre-Acquisition Related Contingencies
Loss Contingencies [Line Items]
Contingency accrual				$ 6,000,000	$ 10,500,000
Payments made on contingency matters		$ 400,000
Loss contingency accrual, provision (reversal)	$ 2,300,000	$ 1,800,000