Severance and Other Charges (Credits), net - Employee Separation Liability (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Reserve [Roll Forward]
Balance at December 31, 2018	$ 0
Additions for costs expensed	9,744	$ 4,552	$ 2,697
Severance and other payments	(3,877)
Other adjustments	(30)
Balance at December 31, 2019	5,837	0
Corporate
Restructuring Reserve [Roll Forward]
Balance at December 31, 2018	0
Additions for costs expensed	3,998
Severance and other payments	(1,762)
Other adjustments	(50)
Balance at December 31, 2019	2,186	0
Tubular Running Services | Operating segments
Restructuring Reserve [Roll Forward]
Balance at December 31, 2018	0
Additions for costs expensed	3,573
Severance and other payments	(1,593)
Other adjustments	20
Balance at December 31, 2019	2,000	0
Tubulars | Operating segments
Restructuring Reserve [Roll Forward]
Balance at December 31, 2018	0
Additions for costs expensed	70
Severance and other payments	(51)
Other adjustments	0
Balance at December 31, 2019	19	0
Cementing Equipment | Operating segments
Restructuring Reserve [Roll Forward]
Balance at December 31, 2018	0
Additions for costs expensed	2,103
Severance and other payments	(471)
Other adjustments	0
Balance at December 31, 2019	$ 1,632	$ 0