OPERATING SEGMENT DATA - Revenue from Customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
REVENUES
Revenues	$ 1,036,419	$ 1,106,094
Asset Based
REVENUES
Revenues	640,576	669,220
Asset-Light
REVENUES
Revenues	394,825	436,033
Corporate and other
REVENUES
Revenues	1,018	841
Operating Segments | Asset Based
REVENUES
Revenues	671,467	697,817
Operating Segments | Asset-Light
REVENUES
Revenues	396,363	438,092
Intersegment revenues
REVENUES
Revenues	(32,429)	(30,656)
Intersegment revenues | Asset Based
REVENUES
Revenues	30,891	28,597
Intersegment revenues | Asset-Light
REVENUES
Revenues	1,538	2,059
Other and eliminations
REVENUES
Revenues	$ (31,411)	$ (29,815)