v2.4.0.6

Business Acquisition Business Acquisition (Details 3) (New Eezy Gro Inc, USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jan. 31, 2012
Business Acquisitions (Textual) [Abstract]
Intangible assets		$ 9,600
Trademarks
Business Acquisitions (Textual) [Abstract]
Intangible assets		1,200
Finite lived useful life	10 years
Customer Lists
Business Acquisitions (Textual) [Abstract]
Intangible assets		5,500
Finite lived useful life	10 years
Technology
Business Acquisitions (Textual) [Abstract]
Intangible assets		2,100
Finite lived useful life	5 years
Non-compete agreement
Business Acquisitions (Textual) [Abstract]
Intangible assets		$ 800
Finite lived useful life	7 years

X

- Details

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

X

- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275

+ Details

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

X

- Definition

The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 52

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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