$ 2,317,842

$ 2,209,760

$ 2,139,027

$ 1,948,245

$ 1,990,160

$ 1,843,334

$ 1,726,915

$ 1,629,158

$ 8,614,874

$ 7,189,568

$ 6,555,459

8,632,000

7,206,000

6,569,000

(17,000)

(16,000)

(14,000)

4,717,000

4,084,000

3,796,000

2,163,000

1,719,000

1,533,000

1,335,000

1,025,000

852,000

$ 417,000

$ 378,000

$ 388,000

Note 13 - Segment Information - Operating Revenues (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues	$ 2,317,842	$ 2,209,760	$ 2,139,027	$ 1,948,245	$ 1,990,160	$ 1,843,334	$ 1,726,915	$ 1,629,158	$ 8,614,874	$ 7,189,568	$ 6,555,459
Operating Segments [Member]
Revenues									8,632,000	7,206,000	6,569,000
Intersegment Eliminations [Member]
Revenues									(17,000)	(16,000)	(14,000)
JBI [Member] \| Operating Segments [Member]
Revenues									4,717,000	4,084,000	3,796,000
DCS [Member] \| Operating Segments [Member]
Revenues									2,163,000	1,719,000	1,533,000
ICS [Member] \| Operating Segments [Member]
Revenues									1,335,000	1,025,000	852,000
JBT [Member] \| Operating Segments [Member]
Revenues									$ 417,000	$ 378,000	$ 388,000