v2.4.1.9

Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Sales and merchandising revenues	$ 950,090us-gaap_SalesRevenueNet	$ 1,003,294us-gaap_SalesRevenueNet
Inter-segment sales	2,187us-gaap_Revenues	398us-gaap_Revenues
Other income (expense), net	3,107us-gaap_OtherNonoperatingIncomeExpense	19,612us-gaap_OtherNonoperatingIncomeExpense
Income (loss) before income taxes	5,038us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	39,901us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Identifiable assets	2,287,627us-gaap_Assets	2,125,583us-gaap_Assets	2,364,692us-gaap_Assets
Grain
Segment Reporting Information [Line Items]
Sales and merchandising revenues	585,162us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = ande_GrainMember	583,159us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = ande_GrainMember
Inter-segment sales	1,689us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ande_GrainMember	0us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ande_GrainMember
Income (loss) before income taxes	743us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = ande_GrainMember	11,306us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = ande_GrainMember
Identifiable assets	1,022,753us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ande_GrainMember	979,608us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ande_GrainMember	1,137,437us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ande_GrainMember
Ethanol
Segment Reporting Information [Line Items]
Sales and merchandising revenues	138,180us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = ande_EthanolMember	188,820us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = ande_EthanolMember
Income (loss) before income taxes	5,280us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = ande_EthanolMember	19,824us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = ande_EthanolMember
Identifiable assets	200,095us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ande_EthanolMember	224,931us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ande_EthanolMember	197,888us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ande_EthanolMember
Plant Nutrient
Segment Reporting Information [Line Items]
Sales and merchandising revenues	153,951us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = ande_PlantNutrientMember	151,355us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = ande_PlantNutrientMember
Inter-segment sales	317us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ande_PlantNutrientMember	289us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ande_PlantNutrientMember
Income (loss) before income taxes	424us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = ande_PlantNutrientMember	(36)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = ande_PlantNutrientMember
Identifiable assets	496,906us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ande_PlantNutrientMember	421,757us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ande_PlantNutrientMember	433,013us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ande_PlantNutrientMember
Rail
Segment Reporting Information [Line Items]
Sales and merchandising revenues	44,216us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = ande_RailMember	52,302us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = ande_RailMember
Inter-segment sales	181us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ande_RailMember	109us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ande_RailMember
Income (loss) before income taxes	10,313us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = ande_RailMember	15,045us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = ande_RailMember
Identifiable assets	381,909us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ande_RailMember	303,532us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ande_RailMember	365,531us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ande_RailMember
Retail
Segment Reporting Information [Line Items]
Sales and merchandising revenues	28,581us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = ande_RetailMember	27,658us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = ande_RetailMember
Income (loss) before income taxes	(2,183)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = ande_RetailMember	(2,335)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = ande_RetailMember
Identifiable assets	47,413us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ande_RetailMember	47,710us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ande_RetailMember	44,536us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ande_RetailMember
Other
Segment Reporting Information [Line Items]
Income (loss) before income taxes	(9,387)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = ande_OtherSegmentsMember	(7,224)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = ande_OtherSegmentsMember
Identifiable assets	138,551us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ande_OtherSegmentsMember	148,045us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ande_OtherSegmentsMember	186,287us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ande_OtherSegmentsMember
Noncontrolling Interests
Segment Reporting Information [Line Items]
Income (loss) before income taxes	$ (152)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = us-gaap_NoncontrollingInterestMember	$ 3,321us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = us-gaap_NoncontrollingInterestMember

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