v3.10.0.1
Document and Entity Information - shares
9 Months Ended
Sep. 30, 2018
Nov. 05, 2018
Document and Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Entity Small Business false  
Entity Emerging Growth Company false  
Document Period End Date Sep. 30, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q3  
Trading Symbol bas  
Entity Registrant Name BASIC ENERGY SERVICES INC  
Entity Central Index Key 0001109189  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   26,561,124