Note 10 - Business Segments - Depreciation and Amortization (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
JBI [Member] | Operating Segments [Member]
Depreciation and amortization	$ 40,300	$ 37,800	$ 119,400	$ 109,300
DCS [Member] | Operating Segments [Member]
Depreciation and amortization	35,800	33,900	106,300	98,400
ICS [Member] | Operating Segments [Member]
Depreciation and amortization	100	100	300	700
JBT [Member] | Operating Segments [Member]
Depreciation and amortization	10,100	10,500	30,400	31,100
Corporate and Other [Member] | Operating Segments [Member]
Depreciation and amortization	4,700	3,900	13,300	11,700
Depreciation and amortization	$ 91,001	$ 86,201	$ 269,717	$ 251,239