Description of Business - Summary of the Fair Value of Identified Assets and Liabilities (Details) - USD ($) $ in Thousands	Jul. 01, 2016	Feb. 18, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Final purchase price goodwill			$ 260,633	$ 260,715	$ 298,619
Underground Solutions
Business Acquisition [Line Items]
Cash		$ 3,630
Receivables and contract assets		6,339
Inventories		12,629
Prepaid expenses and other current assets		671
Property, plant and equipment		2,755
Identified intangible assets		33,370
Deferred income tax assets		13,282
Other assets		90
Accounts payable		(4,653)
Accrued expenses		(5,900)
Contract liabilities		(2,943)
Deferred tax liabilities		(14,562)
Total identifiable net assets		44,708
Total consideration recorded		88,370
Less: total identifiable net assets		44,708
Final purchase price goodwill		$ 43,662
Other acquisitions
Business Acquisition [Line Items]
Cash	$ 0
Receivables and contract assets	2,270
Inventories	2,642
Prepaid expenses and other current assets	111
Property, plant and equipment	5,216
Identified intangible assets	8,523
Deferred income tax assets	124
Other assets	0
Accounts payable	(1,862)
Accrued expenses	(335)
Contract liabilities	0
Deferred tax liabilities	(895)
Total identifiable net assets	15,794
Total consideration recorded	29,674
Less: total identifiable net assets	15,794
Final purchase price goodwill	$ 13,880