Goodwill and Other Intangible Assets - Changes in the Carrying Value of Goodwill (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Roll Forward]
Goodwill, gross, beginning		$ 764,313,000	$ 385,304,000
Accumulated impairment losses, beginning		(117,295,000)	(117,295,000)
Goodwill, net, beginning	$ 646,700,000	647,018,000	268,009,000
Goodwill acquired			379,455,000
Impairment of goodwill	(165,000,000.0)	(165,000,000)	0	$ 0
Foreign currency translation		288,000	(446,000)
Goodwill, gross, ending	764,601,000	764,601,000	764,313,000	385,304,000
Accumulated impairment losses, ending	(282,295,000)	(282,295,000)	(117,295,000)	(117,295,000)
Goodwill, net, ending	482,306,000	482,306,000	647,018,000	268,009,000
Total Well Site Services
Goodwill [Roll Forward]
Goodwill, gross, beginning		244,349,000	222,398,000
Accumulated impairment losses, beginning		(117,295,000)	(117,295,000)
Goodwill, net, beginning		127,054,000	105,103,000
Goodwill acquired			21,953,000
Impairment of goodwill		0
Foreign currency translation		0	(2,000)
Goodwill, gross, ending	244,349,000	244,349,000	244,349,000	222,398,000
Accumulated impairment losses, ending	(117,295,000)	(117,295,000)	(117,295,000)	(117,295,000)
Goodwill, net, ending	127,054,000	127,054,000	127,054,000	105,103,000
Total Well Site Services | Completion Services
Goodwill [Roll Forward]
Goodwill, gross, beginning		221,582,000	199,631,000
Accumulated impairment losses, beginning		(94,528,000)	(94,528,000)
Goodwill, net, beginning		127,054,000	105,103,000
Goodwill acquired			21,953,000
Impairment of goodwill		0
Foreign currency translation		0	(2,000)
Goodwill, gross, ending	221,582,000	221,582,000	221,582,000	199,631,000
Accumulated impairment losses, ending	(94,528,000)	(94,528,000)	(94,528,000)	(94,528,000)
Goodwill, net, ending	127,054,000	127,054,000	127,054,000	105,103,000
Total Well Site Services | Drilling Services
Goodwill [Roll Forward]
Goodwill, gross, beginning		22,767,000	22,767,000
Accumulated impairment losses, beginning		(22,767,000)	(22,767,000)
Goodwill, net, beginning		0	0
Goodwill acquired			0
Impairment of goodwill		0
Foreign currency translation		0	0
Goodwill, gross, ending	22,767,000	22,767,000	22,767,000	22,767,000
Accumulated impairment losses, ending	(22,767,000)	(22,767,000)	(22,767,000)	(22,767,000)
Goodwill, net, ending	0	0	0	0
Downhole Technologies
Goodwill [Roll Forward]
Goodwill, gross, beginning		357,502,000	0
Accumulated impairment losses, beginning		0	0
Goodwill, net, beginning		357,502,000	0
Goodwill acquired			357,502,000
Impairment of goodwill		(165,000,000.0)
Foreign currency translation		0	0
Goodwill, gross, ending	357,502,000	357,502,000	357,502,000	0
Accumulated impairment losses, ending	(165,000,000)	(165,000,000)	0	0
Goodwill, net, ending	192,502,000	192,502,000	357,502,000	0
Offshore / Manufactured Products
Goodwill [Roll Forward]
Goodwill, gross, beginning		162,462,000	162,906,000
Accumulated impairment losses, beginning		0	0
Goodwill, net, beginning		162,462,000	162,906,000
Goodwill acquired			0
Impairment of goodwill		0
Foreign currency translation		288,000	(444,000)
Goodwill, gross, ending	162,750,000	162,750,000	162,462,000	162,906,000
Accumulated impairment losses, ending	0	0	0	0
Goodwill, net, ending	$ 162,750,000	$ 162,750,000	$ 162,462,000	$ 162,906,000