CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 14,774	$ 9,095	$ 29,910	$ 42,193
Foreign currency translation adjustments	(82)	879	(275)	(204)
Comprehensive income	14,692	9,974	29,635	41,989
Less: comprehensive income attributable to non-controlling interest	4,337	3,448	7,796	17,095
Comprehensive income attributable to Cactus Inc.	$ 10,355	$ 6,526	$ 21,839	$ 24,894