CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues
Total revenues	$ 150,658	$ 96,027	$ 404,311	$ 236,407
Costs and expenses
Selling, general and administrative expenses	11,051	7,096	30,016	20,533
Total costs and expenses	98,525	67,968	270,474	176,281
Income from operations	52,133	28,059	133,837	60,126
Interest expense, net	(270)	(5,279)	(3,370)	(15,451)
Other income (expense), net			(4,305)
Income before income taxes	51,863	22,780	126,162	44,675
Income tax expense	8,215	479	14,564	942
Net income	43,648	22,301	111,598	43,733
Less: pre-IPO net income attributable to Cactus LLC		22,301	13,648	43,733
Less: net income attributable to non-controlling interest	24,976		63,191
Net income attributable to Cactus Inc.	$ 18,672		$ 34,759
Earnings per Class A Share - basic	$ 0.52		$ 1.15
Earnings per Class A Share - diluted	$ 0.52		$ 1.14
Weighted average Class A Shares outstanding - diluted	36,229		30,522
Product revenue
Revenues
Total revenues	$ 79,388	53,680	$ 211,595	131,963
Costs and expenses
Cost of revenue	46,816	33,873	128,897	86,564
Rental revenue
Revenues
Total revenues	38,135	21,199	102,224	52,979
Costs and expenses
Cost of revenue	15,349	10,686	41,477	28,173
Field service and other revenue
Revenues
Total revenues	33,135	21,148	90,492	51,465
Costs and expenses
Cost of revenue	$ 25,309	$ 16,313	$ 70,084	$ 41,011
Class A Common Stock
Costs and expenses
Earnings per Class A Share - basic	$ 0.52		$ 1.15
Earnings per Class A Share - diluted	$ 0.52		$ 1.14
Weighted average Class A Shares outstanding - basic	35,821,000		30,182,000
Weighted average Class A Shares outstanding - diluted	36,229,000		30,522,000