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Business Acquisition (Details Textual) (USD $)
Share data in Thousands, unless otherwise specified
12 Months Ended 0 Months Ended 3 Months Ended 0 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Oct. 07, 2014
transaction
bu
T
gal
Dec. 03, 2012
Mar. 31, 2013
Dec. 31, 2012
Jan. 31, 2012
Dec. 31, 2011
May 01, 2012
gal
bu
Business Acquisition [Line Items]                    
Cash payments to acquire businesses $ 20,037,000us-gaap_PaymentsToAcquireBusinessesGross $ 15,252,000us-gaap_PaymentsToAcquireBusinessesGross $ 220,257,000us-gaap_PaymentsToAcquireBusinessesGross              
Goodwill 72,365,000us-gaap_Goodwill 58,554,000us-gaap_Goodwill 54,387,000us-gaap_Goodwill       54,387,000us-gaap_Goodwill   12,545,000us-gaap_Goodwill  
Goodwill acquired 13,811,000us-gaap_GoodwillAcquiredDuringPeriod 4,167,000us-gaap_GoodwillAcquiredDuringPeriod 41,842,000us-gaap_GoodwillAcquiredDuringPeriod              
Grain                    
Business Acquisition [Line Items]                    
Goodwill 46,422,000us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= ande_GrainMember
38,165,000us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= ande_GrainMember
38,165,000us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= ande_GrainMember
      38,165,000us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= ande_GrainMember
  4,990,000us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= ande_GrainMember
 
Goodwill acquired 8,257,000us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_StatementBusinessSegmentsAxis
= ande_GrainMember
0us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_StatementBusinessSegmentsAxis
= ande_GrainMember
[1] 33,175,000us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_StatementBusinessSegmentsAxis
= ande_GrainMember
             
Plant Nutrient                    
Business Acquisition [Line Items]                    
Goodwill 19,104,000us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= ande_PlantNutrientMember
13,550,000us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= ande_PlantNutrientMember
13,550,000us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= ande_PlantNutrientMember
      13,550,000us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= ande_PlantNutrientMember
  6,869,000us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= ande_PlantNutrientMember
 
Goodwill acquired 5,554,000us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_StatementBusinessSegmentsAxis
= ande_PlantNutrientMember
0us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_StatementBusinessSegmentsAxis
= ande_PlantNutrientMember
6,681,000us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_StatementBusinessSegmentsAxis
= ande_PlantNutrientMember
             
Business acquisitions, 2014                    
Business Acquisition [Line Items]                    
Year to date spending on acquisition of business 20,000,000us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ us-gaap_BusinessAcquisitionAxis
= ande_SeriesofIndividuallyImmaterialBusinessAcquisitions2014Member
                 
Consideration transferred 7,200,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= ande_SeriesofIndividuallyImmaterialBusinessAcquisitions2014Member
                 
Goodwill 2,600,000us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= ande_SeriesofIndividuallyImmaterialBusinessAcquisitions2014Member
                 
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill 1,100,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= ande_SeriesofIndividuallyImmaterialBusinessAcquisitions2014Member
                 
Property, plant and equipment 3,800,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_BusinessAcquisitionAxis
= ande_SeriesofIndividuallyImmaterialBusinessAcquisitions2014Member
                 
Auburn Bean and Grain                    
Business Acquisition [Line Items]                    
Percentage of shares outstanding acquired       100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
           
Cash payments to acquire businesses       5,000,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
           
Consideration transferred       60,900,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
           
Number of transactions       2ande_BusinessAcquisitionNumberofTransactions
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
           
Number of shares in stock for stock merger transaction       637us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
           
Shares issued in stock for stock merger transaction, value       35,500,000us-gaap_BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
           
Number of share in stock for stock merger transaction, adjustment to working capital       80ande_BusinessAcquisitionEquityInterestIssuedorIssuableNumberofSharesAdjustmenttoWorkingCapital
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
           
Shares issued in stock for stock merger transaction, adjustment to working capital, value       4,500,000ande_BusinessAcquisitionEquityInterestIssuedorIssuableAdjustmenttoWorkingCapitalValueAssigned
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
           
Cash paid to acquire additional facilities       20,400,000ande_BusinessCombinationSeparatelyRecognizedTransactionsPaymentstoAcquireAdditionalAssets
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
           
Additional grain storage capacity acquired (bushels)       18,100,000ande_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedGrainStorageCapacity
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
           
Dry grain storage acquired (tons)       16,000ande_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedGrainStorageCapacityDry
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
           
Grain storage acquired, liquid nutrient capacity (gallons)       3,700,000ande_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedGrainStorageCapacityLiquidNutrient
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
           
Total purchase price       60,895,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
           
Goodwill       11,236,000us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
           
Property, plant and equipment       41,692,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
           
Inventory       5,798,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
           
Business Acquisition, Goodwill, Expected Tax Deductible Amount       3,900,000us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
           
Auburn Bean and Grain | Grain                    
Business Acquisition [Line Items]                    
Goodwill       5,700,000us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
/ us-gaap_StatementBusinessSegmentsAxis
= ande_GrainMember
           
Auburn Bean and Grain | Plant Nutrient                    
Business Acquisition [Line Items]                    
Goodwill       5,500,000us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
/ us-gaap_StatementBusinessSegmentsAxis
= ande_PlantNutrientMember
           
Business acquisitions, 2013                    
Business Acquisition [Line Items]                    
Consideration transferred   12,000,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= ande_SeriesofIndividuallyImmaterialBusinessAcquisitions2013Member
               
Goodwill   4,200,000us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= ande_SeriesofIndividuallyImmaterialBusinessAcquisitions2013Member
               
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill   1,000,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= ande_SeriesofIndividuallyImmaterialBusinessAcquisitions2013Member
               
Property, plant and equipment   6,400,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_BusinessAcquisitionAxis
= ande_SeriesofIndividuallyImmaterialBusinessAcquisitions2013Member
               
Business acquisitions, 2012                    
Business Acquisition [Line Items]                    
Consideration transferred     10,700,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= ande_SeriesofIndividuallyImmaterialBusinessAcquisitions2012Member
             
Goodwill     2,000,000us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= ande_SeriesofIndividuallyImmaterialBusinessAcquisitions2012Member
      2,000,000us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= ande_SeriesofIndividuallyImmaterialBusinessAcquisitions2012Member
     
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill     1,000,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= ande_SeriesofIndividuallyImmaterialBusinessAcquisitions2012Member
      1,000,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= ande_SeriesofIndividuallyImmaterialBusinessAcquisitions2012Member
     
Property, plant and equipment     3,900,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_BusinessAcquisitionAxis
= ande_SeriesofIndividuallyImmaterialBusinessAcquisitions2012Member
      3,900,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_BusinessAcquisitionAxis
= ande_SeriesofIndividuallyImmaterialBusinessAcquisitions2012Member
     
Inventory     3,800,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
/ us-gaap_BusinessAcquisitionAxis
= ande_SeriesofIndividuallyImmaterialBusinessAcquisitions2012Member
      3,800,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
/ us-gaap_BusinessAcquisitionAxis
= ande_SeriesofIndividuallyImmaterialBusinessAcquisitions2012Member
     
Green Plains Grain Company                    
Business Acquisition [Line Items]                    
Consideration transferred         120,200,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= ande_GreenPlainsGrainCompanyMember
         
Total purchase price         120,232,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= ande_GreenPlainsGrainCompanyMember
         
Goodwill         33,175,000us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= ande_GreenPlainsGrainCompanyMember
         
Property, plant and equipment         57,828,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_BusinessAcquisitionAxis
= ande_GreenPlainsGrainCompanyMember
         
Payable to acquiree outstanding at year end         3,300,000ande_BusinessAcquisitionCostOfAcquiredEntityPayableToAcquiree
/ us-gaap_BusinessAcquisitionAxis
= ande_GreenPlainsGrainCompanyMember
         
Combined grain storage capacity (bushels)         32,000,000ande_BusinessAcquisitionDescriptionOfAgreedUponEntityAcquisitionCapacityOfGrainTerminal
/ us-gaap_BusinessAcquisitionAxis
= ande_GreenPlainsGrainCompanyMember
         
Nutrient storage (tons)         12,000ande_BusinessAcquisitionDescriptionOfAgreedUponEntityAcquisitionCapacityOfNutrientStorage
/ us-gaap_BusinessAcquisitionAxis
= ande_GreenPlainsGrainCompanyMember
         
Goodwill, accounting adjustments           3,000,000us-gaap_GoodwillPurchaseAccountingAdjustments
/ us-gaap_BusinessAcquisitionAxis
= ande_GreenPlainsGrainCompanyMember
       
Inventory         121,983,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
/ us-gaap_BusinessAcquisitionAxis
= ande_GreenPlainsGrainCompanyMember
         
Green Plains Grain Company | Grain                    
Business Acquisition [Line Items]                    
Goodwill acquired             33,200,000us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_BusinessAcquisitionAxis
= ande_GreenPlainsGrainCompanyMember
/ us-gaap_StatementBusinessSegmentsAxis
= ande_GrainMember
     
Amaizing Energy Denison LLC                    
Business Acquisition [Line Items]                    
Total purchase price                   77,400,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= ande_AmaizingEnergyDenisonLlcMember
Property, plant and equipment                   49,693,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_BusinessAcquisitionAxis
= ande_AmaizingEnergyDenisonLlcMember
Capacity of ethanol facility (gallons)                   55,000,000ande_CapacityOfEthanolFacility
/ us-gaap_BusinessAcquisitionAxis
= ande_AmaizingEnergyDenisonLlcMember
Capacity of grain terminal (bushels)                   2,700,000ande_CapacityOfGrainTerminal
/ us-gaap_BusinessAcquisitionAxis
= ande_AmaizingEnergyDenisonLlcMember
Ownership interest in consolidated entity (percentage)                   85.00%ande_OwnershipInterestInConsolidatedEntity
/ us-gaap_BusinessAcquisitionAxis
= ande_AmaizingEnergyDenisonLlcMember
Fair value of noncontrolling interest                   6,100,000us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue
/ us-gaap_BusinessAcquisitionAxis
= ande_AmaizingEnergyDenisonLlcMember
Inventory                   10,087,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
/ us-gaap_BusinessAcquisitionAxis
= ande_AmaizingEnergyDenisonLlcMember
New Eezy Gro Inc                    
Business Acquisition [Line Items]                    
Consideration transferred               16,800,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= ande_NewEezyGroIncMember
   
Total purchase price               16,777,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= ande_NewEezyGroIncMember
   
Goodwill               6,681,000us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= ande_NewEezyGroIncMember
   
Property, plant and equipment               $ 3,586,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_BusinessAcquisitionAxis
= ande_NewEezyGroIncMember
   
Ownership interest in consolidated entity (percentage)               100.00%ande_OwnershipInterestInConsolidatedEntity
/ us-gaap_BusinessAcquisitionAxis
= ande_NewEezyGroIncMember
   
Grain operations | Auburn Bean and Grain                    
Business Acquisition [Line Items]                    
Number of locations acquired       6ande_NumberofLocationsAcquired
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= ande_GrainOperationsMember
           
Agronomy operations | Auburn Bean and Grain                    
Business Acquisition [Line Items]                    
Number of locations acquired       4ande_NumberofLocationsAcquired
/ us-gaap_BusinessAcquisitionAxis
= ande_AuburnBeanandGrainMember
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= ande_AgronomyOperationsMember
           
[1] (a) The Grain acquisition balance has been revised to include the effect of the adjustments to the purchase price allocation in 2013. Discussed in Note 12. Business Acquisitions