Note 12 - Business Segments - Depreciation and Amortization (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Depreciation and amortization	$ 157,571	$ 139,371	$ 306,334	$ 276,916
Segment Reconciling Items [Member]
Depreciation and amortization	13,700	14,000	26,900	27,400
JBI [Member] | Operating Segments [Member]
Depreciation and amortization	55,300	49,400	108,000	98,500
DCS [Member] | Operating Segments [Member]
Depreciation and amortization	66,100	58,400	129,100	115,300
ICS [Member] | Operating Segments [Member]
Depreciation and amortization	500	200	1,000	400
JBT [Member] | Operating Segments [Member]
Depreciation and amortization	10,700	8,800	20,600	17,700
FMS [Member] | Operating Segments [Member]
Depreciation and amortization	$ 11,300	$ 8,600	$ 20,700	$ 17,600