CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenues
Total revenues	$ 158,875	$ 115,110
Costs and expenses
Selling, general and administrative expenses	12,668	9,114
Total costs and expenses	110,383	79,893
Income from operations	48,492	35,217
Interest income (expense), net	23	(2,852)
Other income (expense), net	(1,042)	(4,305)
Income before income taxes	47,473	28,060
Income tax expense (benefit)	(973)	1,652
Net income	48,446	26,408
Less: pre-IPO net income attributable to Cactus LLC		13,648
Less: net income attributable to non-controlling interest	21,639	9,007
Net income attributable to Cactus Inc.	$ 26,807	$ 3,753
Earnings per Class A Share - basic	$ 0.69	$ 0.14
Earnings per Class A Share - diluted	$ 0.59	$ 0.14
Weighted average Class A Shares outstanding - diluted	75,246	26,648
Product revenue
Revenues
Total revenues	$ 86,640	$ 58,926
Costs and expenses
Cost of revenue	53,018	37,066
Rental revenue
Revenues
Total revenues	38,497	29,145
Costs and expenses
Cost of revenue	17,791	12,176
Field service and other revenue
Revenues
Total revenues	33,738	27,039
Costs and expenses
Cost of revenue	$ 26,906	$ 21,537
Class A Common Stock
Costs and expenses
Earnings per Class A Share - basic	$ 0.69	$ 0.14
Earnings per Class A Share - diluted	$ 0.59	$ 0.14
Weighted average Class A Shares outstanding - basic	38,719	26,450
Weighted average Class A Shares outstanding - diluted	75,246	26,648