PREPAID EXPENSES AND OTHER - Prepaid Expenses and Other Current Assets (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Chassis converter pool agreements	$ 11,213,000	$ 10,164,000
Assets held for sale	3,020,000	3,020,000
Income tax receivables	9,526,000	8,701,000
Insurance premiums & maintenance agreements	6,214,000	3,217,000
All other	14,561,000	16,120,000
Prepaid expenses and other current assets	44,534,000	41,222,000
Restricted cash	$ 0	$ 0