REVENUE EARNING EQUIPMENT, NET - Components of Used Vehicle Sales (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue Earning Equipment [Abstract]
Losses (gains) on vehicle sales, net	$ (37,484)	$ (24,432)	$ (31,403)
Losses from valuation adjustments	37,070	83,138	53,728
Used vehicle sales, net	$ (414)	$ 58,706	$ 22,325