$ 1,721,062

$ 1,690,659

$ 1,615,026

$ 1,528,712

$ 1,621,015

$ 1,586,494

$ 1,539,957

$ 1,440,180

$ 6,555,459

$ 6,187,646

$ 6,165,441

6,569,000

6,201,000

6,185,000

3,796,000

3,665,000

3,687,000

1,533,000

1,451,000

1,394,000

852,000

699,000

718,000

388,000

386,000

$ (14,000)

$ (13,000)

$ (20,000)

Note 11 - Segment Information - Operating Revenues (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues	$ 1,721,062	$ 1,690,659	$ 1,615,026	$ 1,528,712	$ 1,621,015	$ 1,586,494	$ 1,539,957	$ 1,440,180	$ 6,555,459	$ 6,187,646	$ 6,165,441
Operating Segments [Member]
Revenues									6,569,000	6,201,000	6,185,000
Operating Segments [Member] \| JBI [Member]
Revenues									3,796,000	3,665,000	3,687,000
Operating Segments [Member] \| DCS [Member]
Revenues									1,533,000	1,451,000	1,394,000
Operating Segments [Member] \| ICS [Member]
Revenues									852,000	699,000	718,000
Operating Segments [Member] \| JBT [Member]
Revenues									388,000	386,000	386,000
Intersegment Eliminations [Member]
Revenues									$ (14,000)	$ (13,000)	$ (20,000)