XML 29 R86.htm IDEA: XBRL DOCUMENT v2.4.1.9
Operating Segments (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2013
Dec. 31, 2014
segment
Dec. 31, 2013
Feb. 08, 2013
Segment Reporting [Abstract]        
Number of reportable segments   2us-gaap_NumberOfReportableSegments    
Segment Reporting Information [Line Items]        
Gain on sale of discontinued operations $ 1,406us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax      
Revenue from foreign sources   16,306us-gaap_Revenues 12,665us-gaap_Revenues  
Other [Member]        
Segment Reporting Information [Line Items]        
Sales price of assets sold       2,797mgpi_DisposalGroupIncludingDiscontinuedOperationsTransactionValueofBusinessDisposition
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AllOtherSegmentsMember
Gain on sale of discontinued operations     $ 878us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AllOtherSegmentsMember