CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues
Total revenues	$ 108,893	$ 66,548	$ 193,310	$ 220,687
Costs and expenses
Selling, general and administrative expenses	11,384	8,693	21,011	22,355
Severance expenses	0	857	0	1,864
Total costs and expenses	91,579	57,673	164,361	171,627
Income from operations	17,314	8,875	28,949	49,060
Interest income (expense), net	(181)	223	(333)	633
Other income (expense), net	(1,004)	1,310	(1,410)	1,310
Income before income taxes	16,129	10,408	27,206	51,003
Income tax expense (benefit)	1,355	1,313	(2,704)	8,810
Net income	14,774	9,095	29,910	42,193
Less: net income attributable to non-controlling interest	4,381	3,067	7,958	17,182
Net income attributable to Cactus Inc.	$ 10,393	$ 6,028	$ 21,952	$ 25,011
Class A Common Stock
Earnings per share and weighted average shares outstanding
Earnings per Class A share - basic (in dollars per share)	$ 0.19	$ 0.13	$ 0.42	$ 0.53
Earnings per Class A share - diluted (in dollars per share)	$ 0.18	$ 0.11	$ 0.37	$ 0.51
Weighted average Class A shares outstanding - basic (in shares)	55,048	47,436	52,124	47,353
Weighted average Class A shares outstanding - diluted (in shares)	75,997	75,367	75,955	75,347
Product revenue
Revenues
Total revenues	$ 70,345	$ 40,893	$ 122,301	$ 127,924
Costs and expenses
Cost of revenue	48,100	25,962	84,621	82,097
Rental revenue
Revenues
Total revenues	14,644	11,535	27,133	47,698
Costs and expenses
Cost of revenue	14,403	10,675	26,574	30,014
Field service and other revenue
Revenues
Total revenues	23,904	14,120	43,876	45,065
Costs and expenses
Cost of revenue	$ 17,692	$ 11,486	$ 32,155	$ 35,297