Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Net income attributable to Cactus Inc.	$ 27,144	$ 10,393	$ 47,760	$ 21,952
Net income attributable to non-controlling interest	6,759	3,332	11,779	6,091
Net income attributable to Cactus Inc. - diluted	$ 33,903	$ 13,725	$ 59,539	$ 28,043
Denominator:
Effect of dilutive shares (in shares)	15,799	20,949	16,353	23,831
Corporate effective income tax rate, if-converted method	25.00%	28.00%	25.00%	28.00%
Class A Common Stock
Denominator:
Weighted average Class A Shares Outstanding - basic (in shares)	60,523	55,048	59,909	52,124
Weighted average Class A shares outstanding - diluted (in shares)	76,322	75,997	76,262	75,955
Earnings per Class A share - basic (in dollars per share)	$ 0.45	$ 0.19	$ 0.80	$ 0.42
Earnings per Class A share - diluted (in dollars per share)	$ 0.44	$ 0.18	$ 0.78	$ 0.37