v2.4.0.8
Document And Entity Information
9 Months Ended
Sep. 30, 2014
Oct. 28, 2014
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2014  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2014  
Entity Registrant Name Green Plains Inc.  
Entity Central Index Key 0001309402  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   37,611,004
Entity Well-known Seasoned Issuer No  
Entity Current Reporting Status Yes  
Entity Voluntary Filers No  
Trading Symbol gpre