XML 49 R40.htm IDEA: XBRL DOCUMENT
v2.4.0.6

ORGANIZATION AND DESCRIPTION OF THE BUSINESS AND FINANCIAL STATEMENT PRESENTATION (Details) (ABF) | 3 Months Ended | 12 Months Ended | 1 Months Ended
--- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2012 | Dec. 31, 2012 Minimum | Dec. 31, 2012 Maximum | Dec. 31, 2012 Unionized employees concentration risk Number of employees
Organization and description of business |  |  |  |  |
Percentage of the Company's revenues represented by ABF | 78.00% | 82.00% |  |  |
Percentage increase in compounded annual contractual wage and benefit rate over the contract period |  |  | 3.00% | 4.00% |
Percentage of ABF's employees covered under collective bargaining agreement with the IBT |  |  |  |  | 75.00%

X
- Definition Represents the percentage increase in compounded annual rate of contractual wage and benefit provided for in the collective bargaining agreement. + References No definition available. + Details
Name: | abfs_PercentageIncreaseInCompoundedAnnualContractualWageAndBenefit
Namespace Prefix: | abfs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of the entity's revenues represented by a specified segment. + References No definition available. + Details
Name: | abfs_SegmentPercentageOfSalesRevenueServicesNet
Namespace Prefix: | abfs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ConcentrationRiskLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13537-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13531-108611 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration