CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues
Total revenues	$ 115,363	$ 59,789	$ 308,673	$ 280,476
Costs and expenses
Selling, general and administrative expenses	12,149	8,384	33,160	30,739
Severance expenses	0	0	0	1,864
Total costs and expenses	94,597	47,233	258,958	218,860
Income from operations	20,766	12,556	49,715	61,616
Interest income (expense), net	(299)	218	(632)	851
Other expense, net	0	(1,865)	(1,410)	(555)
Income before income taxes	20,467	10,909	47,673	61,912
Income tax expense	3,290	23	586	8,833
Net income	17,177	10,886	47,087	53,079
Less: net income attributable to non-controlling interest	4,560	4,653	12,518	21,835
Net income attributable to Cactus Inc.	$ 12,617	$ 6,233	$ 34,569	$ 31,244
Class A Common Stock
Earnings per share and weighted average shares outstanding
Earnings per Class A share - basic (in dollars per share)	$ 0.22	$ 0.13	$ 0.64	$ 0.66
Earnings per Class A share - diluted (in dollars per share)	$ 0.21	$ 0.13	$ 0.58	$ 0.64
Weighted average Class A shares outstanding - basic (in shares)	58,248	47,510	54,188	47,406
Weighted average Class A shares outstanding - diluted (in shares)	76,082	75,622	76,045	75,427
Product revenue
Revenues
Total revenues	$ 74,835	$ 35,857	$ 197,136	$ 163,781
Costs and expenses
Cost of revenue	49,708	19,879	134,329	101,976
Rental revenue
Revenues
Total revenues	15,271	9,881	42,404	57,579
Costs and expenses
Cost of revenue	13,250	9,647	39,824	39,661
Field service and other revenue
Revenues
Total revenues	25,257	14,051	69,133	59,116
Costs and expenses
Cost of revenue	$ 19,490	$ 9,323	$ 51,645	$ 44,620