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COVER PAGE - USD ($)
 12 Months Ended
Dec. 31, 2020
Feb. 19, 2021
Jun. 30, 2020
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 0-17196    
Entity Registrant Name MGP Ingredients, Inc.    
Entity Incorporation, State or Country Code KS    
Entity Tax Identification Number 45-4082531    
Entity Address, Postal Zip Code 66002    
Entity Address, Address Line One 100 Commercial Street, Box 130    
Entity Address, City or Town Atchison    
Entity Address, State or Province KS    
City Area Code (913)    
Local Phone Number 367-1480    
Title of 12(b) Security Common Stock, no par value    
Trading Symbol MGPI    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 480,094,591
Entity Common Stock, Shares Outstanding   16,919,797  
Documents Incorporated by Reference
The following documents are incorporated herein by reference:
 
(1)Portions of the MGP Ingredients, Inc. Proxy Statement for the Annual Meeting of Stockholders to be held on June 17, 2021 are incorporated by reference into Part III of this report to the extent set forth herein.
    
Amendment Flag false    
Entity Central Index Key 0000835011    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Document Period End Date Dec. 31, 2020