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Operating Segments (Detail) - Identifiable Assets by Segment (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Identifiable Assets    
Identifiable Assets $ 160,599us-gaap_Assets $ 151,329us-gaap_Assets
Distillery Products [Member]    
Identifiable Assets    
Identifiable Assets 98,791us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= mgpi_DistilleryProductsMember		 97,875us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= mgpi_DistilleryProductsMember
Ingredient Solutions [Member]    
Identifiable Assets    
Identifiable Assets 23,324us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= mgpi_IngredientSolutionsMember		 24,954us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= mgpi_IngredientSolutionsMember
Other [Member]    
Identifiable Assets    
Identifiable Assets 0us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AllOtherSegmentsMember		 0us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AllOtherSegmentsMember
Corporate [Member]    
Identifiable Assets    
Identifiable Assets $ 38,484us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember		 $ 28,500us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember