General - Additional Information (Details) $ in Thousands, € in Millions							1 Months Ended		3 Months Ended	6 Months Ended		12 Months Ended
	Jun. 02, 2016 EUR (€)	Jun. 02, 2016 USD ($)	May 13, 2016 USD ($)	Feb. 18, 2016 USD ($)	Feb. 01, 2016 USD ($)	Mar. 01, 2015 USD ($)	Jul. 31, 2015 USD ($)	Feb. 28, 2015 USD ($)	Mar. 31, 2016 USD ($)	Jun. 30, 2016 USD ($) country	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Restructuring Plan 2016
General [Line Items]
Impact on earnings										$ 17,000
LMJ
General [Line Items]
Total consideration recorded	€ 2.9	$ 3,235
Fyfe Europe
General [Line Items]
Number of countries in which entity operates | country										72
Cash payments to acquire business			$ 2,800
Total consideration recorded			3,000
Contingent consideration paid			$ 200
Schultz Mechanical Contractors, Inc.
General [Line Items]
Cash payments to acquire business						$ 6,700
Total consideration recorded						7,662
Purchase price						7,100
Working capital adjustment						400
Adjustment to account for deferred consideration						$ 1,000
Contingent consideration paid									$ 500
Underground Solutions
General [Line Items]
Cash payments to acquire business				$ 85,000
Discounted value of net operating loss tax assets				5,300
Consideration transferred, funds held in escrow				6,300
Foreign earnings repatriated				30,400
Foreign earnings repatriated, tax impact				3,500
Total consideration recorded				88,681
Working capital adjustment				$ 1,600
CRTS
General [Line Items]
Contingent consideration payment							$ 1,000
Proceeds from settlement of escrow claims							$ 700
CRTS | Operating Expense
General [Line Items]
Proceeds from settlement of escrow claims											$ 200
CRTS | Other Operating Income (Expense)
General [Line Items]
Proceeds from settlement of escrow claims											$ 800
Video Injection - Instituform SAS
General [Line Items]
Exclusive tube supply agreement								5 years
Loss on disposition of business								$ 2,900
Bayou Perma-Pipe Canada, Ltd
General [Line Items]
Ownership interest					51.00%
Consideration received					$ 9,600
Proceeds from divestiture					7,600
Disposal, note receivable					$ 2,000
Expected loss from disposal, before tax												$ 600