REVENUE EARNING EQUIPMENT, NET - Level 3 Fair Value Measurement (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Revenue Earning Equipment [Line Items]
Total losses	$ (11,016)	$ (24,278)	$ (32,524)	$ (40,972)
Net book value of assets held for sale	98,000		98,000		$ 65,000
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Nonrecurring
Revenue Earning Equipment [Line Items]
Assets held for sale	136,707		136,707		114,574
Total losses	11,016	24,278	32,524	40,972
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Nonrecurring | Trucks
Revenue Earning Equipment [Line Items]
Assets held for sale	48,744		48,744		39,009
Total losses	5,389	8,740	16,451	20,287
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Nonrecurring | Tractors
Revenue Earning Equipment [Line Items]
Assets held for sale	84,707		84,707		73,359
Total losses	3,035	14,053	11,488	19,021
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Nonrecurring | Trailers
Revenue Earning Equipment [Line Items]
Assets held for sale	3,256		3,256		$ 2,206
Total losses	$ 2,592	$ 1,485	$ 4,585	$ 1,664