Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Numerator:
Net income attributable to Cactus Inc.	$ 41,624	$ 49,927	$ 126,176	$ 138,720
Net income attributable to non-controlling interest	0	9,567	0	27,998
Net income attributable to Cactus Inc. - diluted	$ 41,624	$ 59,494	$ 126,176	$ 166,718
Denominator:
Effect of dilutive shares (in shares)	515	13,627	412	13,747
Corporate effective income tax rate, if-converted method				26.00%
Class A Common Stock
Denominator:
Weighted average Class A Shares Outstanding - basic (in shares)	68,681	66,563	68,465	66,030
Weighted average Class A shares outstanding - diluted (in shares)	69,196	80,190	68,877	79,777
Earnings per Class A share - basic (in dollars per share)	$ 0.61	$ 0.75	$ 1.84	$ 2.10
Earnings per Class A share - diluted (in dollars per share)	$ 0.60	$ 0.74	$ 1.83	$ 2.09
Class B Common Stock
Denominator:
Weighted average Class A shares outstanding - diluted (in shares)	11,200		11,300