CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 17,177	$ 10,886	$ 47,087	$ 53,079
Foreign currency translation adjustments	(529)	533	(804)	329
Comprehensive income	16,648	11,419	46,283	53,408
Less: comprehensive income attributable to non-controlling interest	4,413	4,883	12,209	21,978
Comprehensive income attributable to Cactus Inc.	$ 12,235	$ 6,536	$ 34,074	$ 31,430