CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues
Total revenues	$ 168,493	$ 138,543	$ 327,368	$ 253,653
Costs and expenses
Selling, general and administrative expenses	13,252	9,851	25,920	18,965
Total costs and expenses	117,043	92,056	227,426	171,949
Income from operations	51,450	46,487	99,942	81,704
Interest income (expense), net	93	(248)	116	(3,100)
Other income (expense), net			(1,042)	(4,305)
Income before income taxes	51,543	46,239	99,016	74,299
Income tax expense	10,793	4,697	9,820	6,349
Net income	40,750	41,542	89,196
Net income				67,950
Less: pre-IPO net income attributable to Cactus LLC				13,648
Less: net income attributable to non-controlling interest	19,342	29,208	40,981	38,215
Net income attributable to Cactus Inc.	21,408	12,334	48,215
Net income attributable to Cactus Inc.				16,087
Product revenue
Revenues
Total revenues	94,494	73,281	181,134	132,207
Costs and expenses
Cost of revenue	57,517	45,015	110,535	82,081
Rental revenue
Revenues
Total revenues	39,576	34,944	78,073	64,089
Costs and expenses
Cost of revenue	19,450	13,952	37,241	26,128
Field service and other revenue
Revenues
Total revenues	34,423	30,318	68,161	57,357
Costs and expenses
Cost of revenue	$ 26,824	$ 23,238	$ 53,730	$ 44,775
Class A Common Stock
Costs and expenses
Earnings per Class A Share - basic	$ 0.46	$ 0.47	$ 1.13	$ 0.61
Earnings per Class A Share - diluted	$ 0.45	$ 0.46	$ 1.07	$ 0.60
Weighted average Class A Shares outstanding - basic	46,881	26,450	42,819	26,450
Weighted average Class A Shares outstanding - diluted	47,145	26,779	75,326	26,734