Commitments and Contingencies (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Operating leases future minimum rentals and service income
Future Rental and Service Income - Operating Leases, 2015	$ 77,025
Future Rental and Service Income - Operating Leases, 2016	64,229
Future Rental and Service Income - Operating Leases, 2017	46,473
Future Rental and Service Income - Operating Leases, 2018	31,314
Future Rental and Service Income - Operating Leases, 2019	17,487
Future Rental and Service Income - Operating Leases, Future years	21,412
Future Rental and Service Income - Operating Leases, Total	257,940
Future Minimum Rental Payments, 2015	15,358
Future Minimum Rental Payments, 2016	13,395
Future Minimum Rental Payments, 2017	11,185
Future Minimum Rental Payments, 2018	7,631
Future Minimum Rental Payments, 2019	4,817
Future Minimum Rental Payments, Future years	9,566
Future Minimum Rental Payments, Total	$ 61,952

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

Operating leases future rental and service income.

+ References

No definition available.

+ Details

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

- Definition

Operating leases future rental and service income current.

+ References

No definition available.

+ Details

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

- Definition

Operating leases future rental and service income in five years.

+ References

No definition available.

+ Details

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

- Definition

Operating leases future rental and service income in four years.

+ References

No definition available.

+ Details

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

- Definition

Operating leases future rental and service income in three years.

+ References

No definition available.

+ Details

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

- Definition

Operating leases future rental and service income in two years.

+ References

No definition available.

+ Details

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

- Definition

Operating leases future rental and service income thereafter.

+ References

No definition available.

+ Details

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

- Definition

Future minimum rental payments in aggregate as of the balance sheet date under operating leases.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

+ Details

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Future rental payments receivable within one year of the balance sheet date under an operating lease.

+ References

+ Details

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Future rental payments receivable within the fifth year from the balance sheet date under an operating lease.

+ References

+ Details

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Future rental payments receivable within the fourth year from the balance sheet date under an operating lease.

+ References

+ Details

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Future rental payments receivable within the third year from the balance sheet date under an operating lease.

+ References

+ Details

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Future rental payments receivable within the second year from the balance sheet date under an operating lease.

+ References

+ Details

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date.

+ References

+ Details

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant