Note 10 - Business Segments (Details) - Operating Revenues (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 1,440,180	$ 1,406,908
Operating Segments [Member] | JBI [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	844,000	836,000
Operating Segments [Member] | DCS [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	345,000	322,000
Operating Segments [Member] | ICS [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	163,000	163,000
Operating Segments [Member] | JBT [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	91,000	92,000
Operating Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	1,443,000	1,413,000
Intersegment Eliminations [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ (3,000)	$ (6,000)