Note 10 - Operating Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Operating Segments [Member] | JBI [Member]
Operating income	$ 126,100	$ 125,000	$ 349,000	$ 331,600
Operating Segments [Member] | DCS [Member]
Operating income	45,100	34,300	121,500	80,200
Operating Segments [Member] | ICS [Member]
Operating income	11,500	8,400	23,000	20,800
Operating Segments [Member] | JBT [Member]
Operating income	11,200	4,300	29,400	16,100
Operating Segments [Member] | Corporate and Other [Member]
Operating income	(100)	100	(100)	(100)
Operating income	$ 193,846	$ 172,100	$ 522,801	$ 448,637