Annual report pursuant to Section 13 and 15(d)


Cover - USD ($)
12 Months Ended
Dec. 31, 2020
Apr. 30, 2021
Jun. 30, 2020
Cover [Abstract]      
Document Type 10-K/A    
Document Annual Report true    
Current Fiscal Year End Date --12-31    
Document Period End Date Dec. 31, 2020    
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(g) Security Common Stock, $0.01 par value per share*    
Trading Symbol BASX*    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
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 Public Float     $ 3,880,964
Entity Bankruptcy Proceedings, Reporting Current true    
Entity Common Stock, Shares Outstanding   24,899,932  
Amendment Flag true    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001109189    
Document Fiscal Year Focus 2020    
Amendment Description We are filing this Amendment to amend Part III of the 2020 Form 10-K to include the information required by and not included in Part III of the 2020 Form 10-K because we do not intend to file our definitive proxy statement within 120 days of the end of the 2020 Fiscal Year.