ACCRUED EXPENSES AND OTHER LIABILITIES (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
ACCRUED EXPENSES AND OTHER LIABILITIES
Brokerage and escorts	$ 17.9	$ 16.9
Other accrued expenses	13.7	10.6
Owner-operator deposits	8.7	7.1
Unvouchered payables	6.9	6.1
Sales and local taxes payable	1.7	1.7
Fuel and fuel taxes	1.3	1.3
Interest	0.6	0.5
Total	$ 50.8	$ 44.2