Quarterly report pursuant to Section 13 or 15(d)

Cover Page

Cover Page - shares
3 Months Ended
Mar. 31, 2021
May 14, 2021
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2021  
Document Transition Report false  
Entity File Number 001-32693  
Entity Registrant Name BASIC ENERGY SERVICES, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 54-2091194  
Entity Address, Address Line One 801 Cherry Street  
Entity Address, Address Line Two Suite 2100  
Entity Address, City or Town Fort Worth  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 76102  
City Area Code 817  
Local Phone Number 334-4100  
Title of 12(b) Security Common stock, par value $0.01 per share  
Trading Symbol BASX*  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Bankruptcy Proceedings, Reporting Current true  
Entity Common Stock, Shares Outstanding   24,899,932
Amendment Flag false  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q1  
Entity Central Index Key 0001109189  
Current Fiscal Year End Date --12-31