Note 10 - Business Segments (Details) - Assets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 3,091,359	$ 2,819,404
Operating Segments [Member] | JBI [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	1,717,000	1,611,000
Operating Segments [Member] | DCS [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	770,000	721,000
Operating Segments [Member] | ICS [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	93,000	78,000
Operating Segments [Member] | JBT [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	225,000	164,000
Operating Segments [Member] | Corporate and Other [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 286,000	$ 245,000