Note 10 - Segment Information (Detail) - Assets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Assets	$ 2,464,641	[1]	$ 2,267,332	[1]	$ 1,962,000	[1]
JBI [Member]
Assets	1,443,000	[1]	1,273,000	[1]	1,042,000	[1]
DCS [Member]
Assets	586,000	[1]	488,000	[1]	433,000	[1]
ICS [Member]
Assets	55,000	[1]	42,000	[1]	36,000	[1]
JBT [Member]
Assets	185,000	[1]	250,000	[1]	245,000	[1]
Corporate and Other [Member]
Assets	$ 196,000	[1]	$ 214,000	[1]	$ 206,000	[1]

[1] Business segment assets exclude the net impact of intercompany transactions and accounts.