Description of Business - Purchase Price Accounting (Details) $ in Thousands, € in Millions, $ in Millions							12 Months Ended
	Jul. 01, 2016 NZD ($)	Jul. 01, 2016 USD ($)	Jun. 02, 2016 EUR (€)	Jun. 02, 2016 USD ($)	May 13, 2016 USD ($)	Feb. 18, 2016 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2018 NZD ($)	Dec. 31, 2018 USD ($)	Jul. 01, 2016 USD ($)
Underground Solutions
Business Acquisition [Line Items]
Total consideration recorded						$ 88,370
Payments to acquire businesses						85,000
Discounted value of net operating loss tax assets						5,000
Working capital adjustment						$ 1,600
Fyfe Europe
Business Acquisition [Line Items]
Total consideration recorded					$ 3,000
Payments to acquire businesses					$ 2,800
Contingent payment								$ 200
LMJ
Business Acquisition [Line Items]
Total consideration recorded			€ 2.9	$ 3,200
CSL and BCS
Business Acquisition [Line Items]
Total consideration recorded	$ 8.9	$ 6,400
Payments to acquire businesses	7.5	5,500
Working capital adjustment	0.2	$ 100
Estimated fair value of earnout consideration	$ 1.2								$ 0.6	$ 400	$ 900
Estimated fair value of earnout consideration, adjustment							$ 300	$ 100