Note 10 - Operating Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
JBI [Member] | Operating Segments [Member]
Operating income	$ 105,600	$ 118,600	$ 208,800	$ 222,900
DCS [Member] | Operating Segments [Member]
Operating income	50,500	40,600	95,200	76,400
ICS [Member] | Operating Segments [Member]
Operating income	10,900	4,900	21,700	11,500
JBT [Member] | Operating Segments [Member]
Operating income	8,800	9,700	18,000	18,200
Corporate and Other [Member] | Operating Segments [Member]
Operating income		(100)
Operating income	$ 175,792	$ 173,735	$ 343,682	$ 328,955