ACCRUED EXPENSES AND OTHER LIABILITIES (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
ACCRUED EXPENSES AND OTHER LIABILITIES
Brokerage and escorts	$ 11,034	$ 6,264
Unvouchered payables	4,612	4,156
Other accrued expenses	14,410	4,977
Owner operator deposits	8,824	8,431
Interest	469	540
Fuel	1,992	1,130
Fuel taxes	4,978	378
Total	$ 46,319	$ 25,876