Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Numerator:
Net income attributable to Cactus Inc.	$ 52,580	$ 31,425	$ 120,224	$ 79,185
Net income attributable to non-controlling interest	0	0	24,874	19,686
Net income attributable to Cactus Inc. - diluted	$ 52,580	$ 31,425	$ 145,098	$ 98,871
Denominator:
Effect of dilutive shares (in shares)	607	441	15,233	16,132
Corporate effective income tax rate, if-converted method			26.00%	25.00%
Class A Common Stock
Denominator:
Weighted average Class A Shares Outstanding - basic (in shares)	64,879	60,665	64,399	60,164
Weighted average Class A shares outstanding - diluted (in shares)	65,486	61,106	79,632	76,296
Earnings per Class A share - basic (in dollars per share)	$ 0.81	$ 0.52	$ 1.87	$ 1.32
Earnings per Class A share - diluted (in dollars per share)	$ 0.80	$ 0.51	$ 1.82	$ 1.30
Class B Common Stock
Denominator:
Weighted average Class A shares outstanding - diluted (in shares)	14,600	15,200