Segment and Related Information - Disaggregated Revenues for Mats and Integrated Services Segment (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Revenues	$ 247,664	$ 235,329	$ 236,262	$ 227,293	$ 204,389	$ 201,663	$ 183,020	$ 158,691	$ 946,548	$ 747,763	$ 471,496
Mats and integrated services [Member]
Segment Reporting Information [Line Items]
Revenues									230,735	131,960	76,035
Service [Member] | Mats and integrated services [Member]
Segment Reporting Information [Line Items]
Revenues									93,056	34,943	17,641
Rental [Member] | Mats and integrated services [Member]
Segment Reporting Information [Line Items]
Revenues									81,784	61,124	40,748
Product sales [Member]
Segment Reporting Information [Line Items]
Revenues									743,342	628,401	390,306
Product sales [Member] | Mats and integrated services [Member]
Segment Reporting Information [Line Items]
Revenues									$ 55,895	$ 35,893	$ 17,646