Severance and Other Charges, net - Reconciliation of Employee Separation Liability (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Restructuring Reserve [Roll Forward]
Balance at December 31, 2019			$ 5,837
Additions for costs expensed	$ 3,444	$ 1,243	8,776	$ 2,225
Severance and other payments			(11,545)
Other adjustments			(724)
Balance at September 30, 2020	2,344		2,344
Corporate
Restructuring Reserve [Roll Forward]
Balance at December 31, 2019			2,186
Additions for costs expensed			2,549
Severance and other payments			(2,779)
Other adjustments			(634)
Balance at September 30, 2020	1,322		1,322
Tubular Running Services | Operating Segments
Restructuring Reserve [Roll Forward]
Balance at December 31, 2019			2,000
Additions for costs expensed			5,158
Severance and other payments			(7,026)
Other adjustments			(78)
Balance at September 30, 2020	54		54
Tubulars | Operating Segments
Restructuring Reserve [Roll Forward]
Balance at December 31, 2019			19
Additions for costs expensed			143
Severance and other payments			(160)
Other adjustments			0
Balance at September 30, 2020	2		2
Cementing Equipment | Operating Segments
Restructuring Reserve [Roll Forward]
Balance at December 31, 2019			1,632
Additions for costs expensed			926
Severance and other payments			(1,580)
Other adjustments			(12)
Balance at September 30, 2020	$ 966		$ 966