Restructuring - Additional Information (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($) employee	Dec. 31, 2016 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0	$ 6,797,000
Restructuring Plan 2016
Restructuring Cost and Reserve [Line Items]
Number of terminations during period | employee		964
Number of positions eliminated, percent		15.50%
Restructuring charges	0	$ 9,742,000	$ 16,100,000
Restructuring charges, net of tax			$ 10,300,000
Pre-tax charges (reversals) related to restructuring	0	9,742,000
Utilized - Non-Cash	0	0
Utilized - Cash	300,000	6,671,000
Restructuring Plan 2016 | Infrastructure Solutions
Restructuring Cost and Reserve [Line Items]
Restructuring charges		2,153,000
Restructuring Plan 2016 | Corrosion Protection
Restructuring Cost and Reserve [Line Items]
Restructuring charges		2,737,000
Restructuring Plan 2016 | Energy Services
Restructuring Cost and Reserve [Line Items]
Restructuring charges		4,852,000
Employee Severance and Lease Termination | Restructuring Plan 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0	6,700,000
Corporate, Non-Segment | Restructuring Plan 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 1,000,000