ORGANIZATION AND DESCRIPTION OF THE BUSINESS AND FINANCIAL STATEMENT PRESENTATION (Details) (Freight Transportation (ABF Freight))	0 Months Ended	3 Months Ended
	Nov. 03, 2013	Mar. 31, 2015
Organization and description of business
Percentage of the Company's revenues, before other revenues and intercompany eliminations, represented by ABF Freight		71.00%
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%
Minimum
Organization and description of business
Estimated increase in compounded annual contractual wage and benefit contribution rates in second through fifth years (as a percent)		2.50%
Maximum
Organization and description of business
Estimated increase in compounded annual contractual wage and benefit contribution rates in second through fifth years (as a percent)		3.00%
Unionized employees concentration risk | Number of employees
Organization and description of business
Percentage of ABF Freight's employees covered under collective bargaining agreement with the IBT		78.00%