GOODWILL AND INTANGIBLE ASSETS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Goodwill by reportable operating segment
Balance at the beginning of the period	$ 77,078
Goodwill acquired	3,618
Balance at the end of the period	80,696
Premium Logistics (Panther)
Goodwill by reportable operating segment
Balance at the beginning of the period		71,096
Balance at the end of the period	71,096	71,096
Household Goods Moving Services (ABF Moving)
Goodwill by reportable operating segment
Balance at the beginning of the period		5,352
Balance at the end of the period	5,352	5,352
Transportation Management (ABF Logistics)
Goodwill by reportable operating segment
Goodwill acquired	2,914
Balance at the end of the period	2,914
Emergency & Preventative Maintenance (FleetNet)
Goodwill by reportable operating segment
Balance at the beginning of the period		630
Balance at the end of the period	630	630
Other
Goodwill by reportable operating segment
Goodwill acquired	704
Balance at the end of the period	$ 704