Loss Per Share (Details) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($) $ / shares shares
Basic
Net loss attributable to Ranger Energy Services, Inc.	$ (5.7)
Diluted
Net loss attributable to Ranger Energy Services, Inc.	$ (5.7)
Weighted average shares (denominator):
Weighted average number of shares - basic | shares	8,423,445
Weighted average number of shares - diluted | shares	8,423,445
Basic net loss per share (in dollars per share) | $ / shares	$ (0.68)
Diluted net loss per share (in dollars per share) | $ / shares	$ (0.68)
Antidilutive Securities | shares	6,900,000
Class A Common Stock
Basic
Net loss attributable to Ranger Energy Services, Inc.	$ (5.7)
Diluted
Net loss attributable to Ranger Energy Services, Inc.	$ (5.7)