Note 9 - Business Segments (Detail) - Assets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Segment Assets	$ 2,586,119	$ 2,464,641
JBI [Member]
Segment Assets	1,516,000	1,443,000
DCS [Member]
Segment Assets	640,000	586,000
ICS [Member]
Segment Assets	59,000	55,000
JBT [Member]
Segment Assets	177,000	185,000
Corporate and Other [Member]
Segment Assets	$ 194,000	$ 196,000