v2.4.1.9
Fair Value Measurements (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Mar. 31, 2014
Assets and liabilities measured at fair value on a recurring basis      
Cash equivalents $ 1,491us-gaap_CashAndCashEquivalentsFairValueDisclosure $ 269us-gaap_CashAndCashEquivalentsFairValueDisclosure $ 25,821us-gaap_CashAndCashEquivalentsFairValueDisclosure
Restricted cash 685ande_FairValueAssetsMeasuredOnRecurringBasisRestrictedCash 429ande_FairValueAssetsMeasuredOnRecurringBasisRestrictedCash 652ande_FairValueAssetsMeasuredOnRecurringBasisRestrictedCash
Commodity derivatives, net 29,582us-gaap_DerivativeAssets [1] 25,885us-gaap_DerivativeAssets [1] 87,808us-gaap_DerivativeAssets [1]
Convertible preferred securities 13,300us-gaap_InvestmentsFairValueDisclosure [2] 13,300us-gaap_InvestmentsFairValueDisclosure [2] 20,530us-gaap_InvestmentsFairValueDisclosure [2]
Other assets and liabilities 8,066ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisOther [3] 8,203ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisOther [3] 10,009ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisOther [3]
Total 53,124ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisNet 48,086ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisNet 144,820ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisNet
Level 1      
Assets and liabilities measured at fair value on a recurring basis      
Cash equivalents 1,491us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member		 269us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member		 25,821us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Restricted cash 685ande_FairValueAssetsMeasuredOnRecurringBasisRestrictedCash
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member		 429ande_FairValueAssetsMeasuredOnRecurringBasisRestrictedCash
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member		 652ande_FairValueAssetsMeasuredOnRecurringBasisRestrictedCash
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Commodity derivatives, net 60,796us-gaap_DerivativeAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member		 [1] 72,868us-gaap_DerivativeAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member		 [1] 82,626us-gaap_DerivativeAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member		 [1]
Convertible preferred securities 0us-gaap_InvestmentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member		 [2] 0us-gaap_InvestmentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member		 [2] 0us-gaap_InvestmentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member		 [2]
Other assets and liabilities 11,583ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisOther
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member		 [3] 10,869ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisOther
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member		 [3] 10,960ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisOther
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member		 [3]
Total 74,555ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisNet
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member		 84,435ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisNet
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member		 120,059ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisNet
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Level 2      
Assets and liabilities measured at fair value on a recurring basis      
Cash equivalents 0us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 0us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 0us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Restricted cash 0ande_FairValueAssetsMeasuredOnRecurringBasisRestrictedCash
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 0ande_FairValueAssetsMeasuredOnRecurringBasisRestrictedCash
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 0ande_FairValueAssetsMeasuredOnRecurringBasisRestrictedCash
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Commodity derivatives, net (31,214)us-gaap_DerivativeAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 [1] (46,983)us-gaap_DerivativeAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 [1] 5,182us-gaap_DerivativeAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 [1]
Convertible preferred securities 0us-gaap_InvestmentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 [2] 0us-gaap_InvestmentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 [2] 0us-gaap_InvestmentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 [2]
Other assets and liabilities (3,517)ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisOther
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 [3] (2,666)ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisOther
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 [3] (951)ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisOther
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 [3]
Total (34,731)ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisNet
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 (49,649)ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisNet
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 4,231ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisNet
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Level 3      
Assets and liabilities measured at fair value on a recurring basis      
Cash equivalents 0us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 0us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 0us-gaap_CashAndCashEquivalentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
Restricted cash 0ande_FairValueAssetsMeasuredOnRecurringBasisRestrictedCash
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 0ande_FairValueAssetsMeasuredOnRecurringBasisRestrictedCash
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 0ande_FairValueAssetsMeasuredOnRecurringBasisRestrictedCash
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
Commodity derivatives, net 0us-gaap_DerivativeAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 [1] 0us-gaap_DerivativeAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 [1] 0us-gaap_DerivativeAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 [1]
Convertible preferred securities 13,300us-gaap_InvestmentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 [2] 13,300us-gaap_InvestmentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 [2] 20,530us-gaap_InvestmentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 [2]
Other assets and liabilities 0ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisOther
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 [3] 0ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisOther
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 [3] 0ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisOther
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 [3]
Total $ 13,300ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisNet
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 $ 13,300ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisNet
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 $ 20,530ande_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisNet
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
[1] Includes associated cash posted/received as collateral
[2] Recorded in “Other noncurrent assets” on the Company’s Condensed Consolidated Balance Sheets
[3] Included in other assets and liabilities are deferred compensation assets (Level 1) and interest rate derivatives (Level 2)