Note 10 - Business Segments (Details) - Operating Revenues (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 1,548,000	$ 1,547,867	$ 1,383,000	$ 1,382,858	$ 2,954,774	$ 2,674,444
Operating Segments [Member] | JBI [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	931,000		855,000		1,766,000	1,651,000
Operating Segments [Member] | DCS [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	348,000		303,000		670,000	582,000
Operating Segments [Member] | ICS [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	173,000		132,000		336,000	254,000
Operating Segments [Member] | JBT [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	101,000		101,000		193,000	203,000
Operating Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	1,553,000		1,391,000		2,965,000	2,690,000
Intersegment Eliminations [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ (5,000)		$ (8,000)		$ (10,000)	$ (16,000)