Acquisitions - Schedule of Amortized Intangible Assets And Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Finite Lived Intangible Assets And Liabilities [Line Items]
Gross Value, Assets	$ 97,898	$ 32,309
Accumulated Amortization, Assets	(32,183)	(16,156)
Net Value, Assets	65,715	$ 16,153
Customer Relationships [Member]
Finite Lived Intangible Assets And Liabilities [Line Items]
Gross Value, Assets	38,137
Accumulated Amortization, Assets	(7,640)
Net Value, Assets	30,497
Backlog [Member]
Finite Lived Intangible Assets And Liabilities [Line Items]
Gross Value, Assets	9,713
Accumulated Amortization, Assets	(5,795)
Net Value, Assets	3,918
Developed Technology [Member]
Finite Lived Intangible Assets And Liabilities [Line Items]
Gross Value, Assets	9,233
Accumulated Amortization, Assets	(1,384)
Net Value, Assets	7,849
Unfavorable Contracts and Leases [Member]
Finite Lived Intangible Assets And Liabilities [Line Items]
Gross Value, Liabilities	7,000
Accumulated Amortization, Liabilities	(4,726)
Net Value, Liabilities	2,274
Layne and Liquiforce Acquisitions [Member]
Finite Lived Intangible Assets And Liabilities [Line Items]
Gross Value, Assets	69,689
Accumulated Amortization, Assets	(16,902)
Net Value, Assets	52,787
Gross Value, Liabilities	7,000
Accumulated Amortization, Liabilities	(4,726)
Net Value, Liabilities	$ 2,274
Layne and Liquiforce Acquisitions [Member] | Customer Relationships [Member]
Finite Lived Intangible Assets And Liabilities [Line Items]
Weighted Average Useful Lives (Years), Assets	3 years
Gross Value, Assets	$ 35,937
Accumulated Amortization, Assets	(5,880)
Net Value, Assets	$ 30,057
Layne and Liquiforce Acquisitions [Member] | Backlog [Member]
Finite Lived Intangible Assets And Liabilities [Line Items]
Weighted Average Useful Lives (Years), Assets	2 years
Gross Value, Assets	$ 9,713
Accumulated Amortization, Assets	(5,795)
Net Value, Assets	$ 3,918
Layne and Liquiforce Acquisitions [Member] | Developed Technology [Member]
Finite Lived Intangible Assets And Liabilities [Line Items]
Weighted Average Useful Lives (Years), Assets	4 years
Gross Value, Assets	$ 9,233
Accumulated Amortization, Assets	(1,384)
Net Value, Assets	$ 7,849
Layne and Liquiforce Acquisitions [Member] | Trademarks/Trade Name [Member]
Finite Lived Intangible Assets And Liabilities [Line Items]
Weighted Average Useful Lives (Years), Assets	4 years
Gross Value, Assets	$ 9,075
Accumulated Amortization, Assets	(1,382)
Net Value, Assets	$ 7,693
Layne and Liquiforce Acquisitions [Member] | Favorable Contracts, Covenants not to compete and other [Member]
Finite Lived Intangible Assets And Liabilities [Line Items]
Weighted Average Useful Lives (Years), Assets	1 year
Gross Value, Assets	$ 5,731
Accumulated Amortization, Assets	(2,461)
Net Value, Assets	$ 3,270
Layne and Liquiforce Acquisitions [Member] | Unfavorable Contracts and Leases [Member]
Finite Lived Intangible Assets And Liabilities [Line Items]
Weighted Average Useful Lives (Years),Laibilities	2 years
Gross Value, Liabilities	$ 7,000
Accumulated Amortization, Liabilities	(4,726)
Net Value, Liabilities	$ 2,274