Note 10 - Segment Information (Detail) - Operating Revenues (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenues	$ 1,338,136	$ 1,295,792	$ 1,255,130	$ 1,165,922	$ 1,204,937	$ 1,171,270	$ 1,149,855	$ 1,000,780	$ 5,054,980	$ 4,526,842	$ 3,793,485
JBI [Member]
Revenues									3,071,000	2,673,000	2,141,000
DCS [Member]
Revenues									1,080,000	1,031,000	907,000
ICS [Member]
Revenues									456,000	356,000	291,000
JBT [Member]
Revenues									484,000	504,000	479,000
Total Segment Revenues [Member]
Revenues									5,091,000	4,564,000	3,818,000
Intersegment Elimination [Member]
Revenues									$ (36,000)	$ (37,000)	$ (25,000)