Asset coverage ratio minimum.

No definition available.

Name:	ande_AssetCoverageRatioMinimum
Namespace Prefix:	ande_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Current Ratio Net Of Hedged Inventory Maximum

+ References

No definition available.

+ Details

Name:	ande_CurrentRatioNetOfHedgedInventoryMaximum
Namespace Prefix:	ande_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Current ratio net of hedged inventory minimum.

+ References

No definition available.

+ Details

Name:	ande_CurrentRatioNetOfHedgedInventoryMinimum
Namespace Prefix:	ande_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument Covenant Compliance Debt Service Coverage Ratio Maximum

+ References

No definition available.

+ Details

Name:	ande_DebtInstrumentCovenantComplianceDebtServiceCoverageRatioMaximum
Namespace Prefix:	ande_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument Covenant Compliance Debt Service Coverage Ratio Minimum

+ References

No definition available.

+ Details

Name:	ande_DebtInstrumentCovenantComplianceDebtServiceCoverageRatioMinimum
Namespace Prefix:	ande_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument Covenant Compliance Working Capital

+ References

No definition available.

+ Details

Name:	ande_DebtInstrumentCovenantComplianceWorkingCapital
Namespace Prefix:	ande_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Debt Instrument Period Of Draw Down Under Line Of Credit

+ References

No definition available.

+ Details

Name:	ande_DebtInstrumentPeriodOfDrawDownUnderLineOfCredit
Namespace Prefix:	ande_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt to capitalized ratio maximum.

+ References

No definition available.

+ Details

Name:	ande_DebtToCapitalizedRatioMaximum
Namespace Prefix:	ande_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Interest coverage ratio maximum.

+ References

No definition available.

+ Details

Name:	ande_InterestCoverageRatioMaximum
Namespace Prefix:	ande_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Interest Coverage Ratio Minimum

+ References

No definition available.

+ Details

Name:	ande_InterestCoverageRatioMinimum
Namespace Prefix:	ande_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472

+ Details

Name:	us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments applied to interest.

+ References

+ Details

Name:	us-gaap_DebtInstrumentPeriodicPaymentInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Line-of-Credit Arrangement

-URI http://asc.fasb.org/extlink&oid=6517033

+ Details

Name:	us-gaap_LinesOfCreditCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20, 22

-Article 5

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 3

-Subparagraph (SX 210.12-04.(a))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The lowest amount of net worth (total assets minus total liabilities) required by secondary market investors or state-imposed regulatory mandates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 948

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6490092&loc=d3e47304-110998

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 948

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (c)(a)

-URI http://asc.fasb.org/extlink&oid=6490092&loc=d3e47080-110998

+ Details

Name:	us-gaap_MinimumNetWorthRequiredForCompliance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_BusinessAcquisitionAxis=ande_AuburnBeanandGrainMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=ande_NonrecourseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_StandbyLettersOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ande_NonrecourseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ande_RecourseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=ande_FifteenYearLoanWithFixedInterestRateOfFourPointEightPercentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=ande_FiveYearTermDebentureBondsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=ande_TenYearTermDebentureBondsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_NotesPayableOtherPayablesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt (Details Textual) (USD $)	12 Months Ended
Debt (Details Textual) (USD $)	Dec. 31, 2014	Mar. 04, 2014	Dec. 31, 2013	Jun. 30, 2012	Oct. 07, 2014
Debt Instrument [Line Items]
Total borrowing capacity under lines of credit		$ 400,000,000
Line of credit facility	2,166,000us-gaap_LinesOfCreditCurrent	90,000,000us-gaap_LinesOfCreditCurrent	0us-gaap_LinesOfCreditCurrent
Period of borrowings draw down under line of credit	90 days
Loan term	15 years
Recourse
Debt Instrument [Line Items]
Line of credit facility	2,166,000		0
Long term debt	375,053,000		417,136,000
Minimum tangible net worth	300,000,000
Current Ratio Net Of Hedged Inventory Maximum	125.00%
Current Ratio Net Of Hedged Inventory Minimum	100.00%
Debt to capitalized ratio maximum	70.00%
Asset coverage ratio minimum	75.00%
Interest coverage ratio maximum	275.00%
Interest Coverage Ratio Minimum	1
Aggregate annual maturities of long term debt, 2015	76,100,000
Aggregate annual maturities of long term debt, 2016	27,500,000
Aggregate annual maturities of long term debt, 2017	47,500,000
Aggregate annual maturities of long term debt, 2018	53,600,000
Aggregate annual maturities of long term debt, 2019	15,200,000
Aggregate annual maturities of long term debt there after	153,300,000
Nonrecourse
Debt Instrument [Line Items]
Line of credit facility	0		0
Debt service coverage ratio	1.25
Debt Instrument Covenant Compliance Debt Service Coverage Ratio Minimum	1.00
Nonrecourse \| December 31 2014
Debt Instrument [Line Items]
Minimum tangible net worth	33,000,000
Working capital	8,000,000
Nonrecourse \| December 31 2015
Debt Instrument [Line Items]
Minimum tangible net worth	36,000,000
Nonrecourse \| December 31 2016
Debt Instrument [Line Items]
Minimum tangible net worth	40,000,000
Note payable \| Recourse
Debt Instrument [Line Items]
Long term debt	46,000		0
Five year term debenture bonds \| Recourse \| Available-for-sale Securities
Debt Instrument [Line Items]
Loan term	5 years
Debenture bond bearing interest percentage	2.65%
Debenture bond bearing interest Amount	3,300,000
Ten year term debenture bonds \| Recourse \| Available-for-sale Securities
Debt Instrument [Line Items]
Loan term	10 years
Debenture bond bearing interest percentage	3.50%
Debenture bond bearing interest Amount	3,500,000
15 year loan with fixed interest rate of 4.8% \| Recourse \| Available-for-sale Securities
Debt Instrument [Line Items]
Loan term	15 years
Debenture bond bearing interest percentage	4.50%
Debenture bond bearing interest Amount	1,700,000
Standby letters of credit
Debt Instrument [Line Items]
Standby letters of credit outstanding	30,700,000
Standby letters of credit \| The Andersons Denison Ethanol LLC
Debt Instrument [Line Items]
Standby letters of credit outstanding	400,000
Line of credit
Debt Instrument [Line Items]
Total borrowing capacity under lines of credit		850,000,000.0
Line of credit \| Short Term Line Of Credit \| The Andersons Denison Ethanol LLC
Debt Instrument [Line Items]
Total borrowing capacity under lines of credit				13,000,000
Line of credit \| Long Term Line Of Credit \| The Andersons Denison Ethanol LLC
Debt Instrument [Line Items]
Total borrowing capacity under lines of credit				15,100,000
Nonrecourse \| The Andersons Denison Ethanol LLC
Debt Instrument [Line Items]
Total borrowing capacity under lines of credit	28,100,000
Auburn Bean and Grain
Debt Instrument [Line Items]
Debt assumed as part of business acquisition					12,577,000
Auburn Bean and Grain \| Note payable
Debt Instrument [Line Items]
Debt assumed as part of business acquisition					$ 12,500,000