Note 10 - Business Segments (Details) - Operating Revenues (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 1,601,156	$ 1,435,850	$ 4,555,930	$ 4,110,295
Operating Segments [Member] | JBI [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	964,000	890,000	2,730,000	2,541,000
Operating Segments [Member] | DCS [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	361,000	319,000	1,031,000	901,000
Operating Segments [Member] | ICS [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	185,000	137,000	521,000	391,000
Operating Segments [Member] | JBT [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	96,000	97,000	289,000	300,000
Operating Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	1,606,000	1,443,000	4,571,000	4,133,000
Intersegment Eliminations [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ (5,000)	$ (7,000)	$ (15,000)	$ (23,000)