CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues
Total revenues	$ 160,808	$ 150,658	$ 488,176	$ 404,311
Costs and expenses
Selling, general and administrative expenses	13,348	11,051	39,268	30,016
Total costs and expenses	113,685	98,525	341,111	270,474
Income from operations	47,123	52,133	147,065	133,837
Interest income (expense), net	373	(270)	489	(3,370)
Other income (expense), net	558		(484)	(4,305)
Income before income taxes	48,054	51,863	147,070	126,162
Income tax expense	12,221	8,215	22,041	14,564
Net income	35,833	43,648	125,029	111,598
Net income				111,598
Less: pre-IPO net income attributable to Cactus LLC				13,648
Less: net income attributable to non-controlling interest	16,494	24,976	57,475	63,191
Net income attributable to Cactus Inc.	19,339	18,672	67,554
Net income attributable to Cactus Inc.				34,759
Product revenue
Revenues
Total revenues	92,582	79,388	273,716	211,595
Costs and expenses
Cost of revenue	57,768	46,816	168,303	128,897
Rental revenue
Revenues
Total revenues	35,528	38,135	113,601	102,224
Costs and expenses
Cost of revenue	17,194	15,349	54,435	41,477
Field service and other revenue
Revenues
Total revenues	32,698	33,135	100,859	90,492
Costs and expenses
Cost of revenue	$ 25,375	$ 25,309	$ 79,105	$ 70,084
Class A Common Stock
Costs and expenses
Earnings per Class A Share - basic	$ 0.41	$ 0.52	$ 1.53	$ 1.15
Earnings per Class A Share - diluted	$ 0.41	$ 0.52	$ 1.50	$ 1.14
Weighted average Class A Shares outstanding - basic	47,095	35,821	44,260	30,182
Weighted average Class A Shares outstanding - diluted	47,322	36,229	75,337	30,522