Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended	68 Months Ended
	Jan. 31, 2023	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Sep. 30, 2023	Jun. 06, 2023
Equity
Issuances of common stock				$ 169,369
Cash dividend declared (in dollars per share)		$ 0.12	$ 0.11	$ 0.34	$ 0.33
Share repurchases				$ 159
Pro rata distributions made to other members				13,926	$ 8,007
Share Repurchase Program
Equity
Authorized amount of stock repurchase								$ 150,000
Additional Paid-In Capital
Equity
Costs associated with stock issuance	$ 2,200
Issuances of common stock				143,302
Share repurchases				$ 137
Common stock | Share Repurchase Program
Equity
Common stock purchased and retired (in shares)				4,007
Share repurchases				$ 200
Average stock repurchased price (in dollars per share)				$ 39.69
Common stock authorized repurchase amount		$ 149,800		$ 149,800			$ 149,800
FlexSteel | Key Employee
Equity
Issuance of common stock (in shares)				128,150
Issuances of common stock				$ 6,500
Vesting period				1 year
Period for recognition				1 year
Accrued expenses and other current liabilities		$ 700		$ 700			$ 700
Selling, general and administrative expenses				$ 200
Cactus Companies
Equity
Ownership interest				82.20%
Cactus LLC
Equity
Ownership interest						80.30%
Cactus Inc
Equity
Cash distributions to unit holders				$ 63,100	31,700
CC Unit Holders other than Cactus, Inc.
Equity
Pro rata distributions made to other members				$ 13,900	$ 8,000
Class A Common Stock
Equity
Common stock, shares outstanding (in shares)		65,323,000		65,323,000		60,903,000	65,323,000
Shares outstanding, percentage of total voting power		82.20%		82.20%			82.20%
Cash dividend declared (in dollars per share)				$ 0.34	$ 0.33
Dividends declared				$ 22,300	$ 20,100
Dividends paid				$ 22,300	$ 20,000
Class A Common Stock | Common stock
Equity
Issuance of common stock (in shares)				3,352,000
Issuances of common stock				$ 34
Class A Common Stock | Additional Offering
Equity
Shares sold (in shares)	3,224,300
Price of stock (in dollars per share)	$ 51.36
Cash consideration	$ 165,600
Underwriting discounts	$ 6,900
Class A Common Stock | Cactus Companies LLC Agreement
Equity
Redemption ratio per unit (in shares)		1		1			1
Shares subject to conversion rate adjustments (in shares)		1		1			1
CW Unit redemptions (in shares)							46,500,000
Class A Common Stock | March 2021 Secondary Offering
Equity
CW Unit redemptions (in shares)				900,000	1,500,000
Class B Common Stock
Equity
Common stock, shares outstanding (in shares)		14,106,000		14,106,000		14,978,000	14,106,000
Shares outstanding, percentage of total voting power		17.80%		17.80%			17.80%
Class B Common Stock | Cactus Companies
Equity
Shares owned per units held (in shares)		1		1			1