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ORGANIZATION AND DESCRIPTION OF THE BUSINESS AND FINANCIAL STATEMENT PRESENTATION (Details) (ABF Freight)
 0 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended
Nov. 03, 2013
Dec. 31, 2013
Dec. 31, 2013
Unionized employees concentration risk
Number of employees
Nov. 03, 2013
Forecast
Dec. 31, 2013
Forecast
Dec. 31, 2013
Forecast
Minimum
Dec. 31, 2013
Forecast
Maximum
Organization and description of business              
Percentage of the Company's revenues, before intercompany eliminations, represented by ABF Freight   75.00%          
Percentage of ABF Freight's employees covered under collective bargaining agreement with the IBT     76.00%        
Wage rate reduction under collective bargaining agreement upon implementation date (as a percent) 7.00%            
Wage rate increase for next three years of collective bargaining agreement (as a percent)       2.00%      
Wage rate increase in fifth year of collective bargaining agreement (as a percent)       2.50%      
Reduction in compensated vacation under collective bargaining agreement 5 days            
Approximate initial reduction in combined total contractual wage and benefit rate under collective bargaining agreement (as a percent)         4.00%    
Estimated increase in compounded annual contractual wage and benefit contribution rates in second through fifth years (as a percent)           0.025 0.030