Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2020	Apr. 29, 2020
Entity Information [Line Items]
Entity Registrant Name	Ranger Energy Services, Inc.
Entity Central Index Key	0001699039
Document Type	10-Q
Document Period End Date	Mar. 31, 2020
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Small Business	true
Class A Common Stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		8,477,425
Class B Common Stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		6,866,154