The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

ORGANIZATION AND DESCRIPTION OF THE BUSINESS AND FINANCIAL STATEMENT PRESENTATION (Acquisitions) (Details) - USD ($) $ in Thousands			6 Months Ended
	Dec. 01, 2015	Jan. 02, 2015	Jun. 30, 2016	Jun. 30, 2015
Acquisitions
Net cash consideration			$ (197)	$ 5,219
Bear Transportation Services, L.P. \| Transportation Management (ABF Logistics)
Acquisitions
Net cash consideration	$ 24,400
Smart Lines Transportation Group, LLC \| Transportation Management (ABF Logistics)
Acquisitions
Net cash consideration		$ 5,200