ACCRUED EXPENSES AND OTHER LIABILITIES (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
ACCRUED EXPENSES AND OTHER LIABILITIES
Brokerage and escorts	$ 16.9	$ 12.6
Other accrued expenses	10.6	8.0
Owner-operator deposits	7.1	9.3
Unvouchered payables	6.1	11.7
Sales and local taxes payable	1.7	3.3
Fuel and fuel taxes	1.3	1.2
Interest	0.5	0.4
Total	$ 44.2	$ 46.5