REVENUE RECOGNITION AND RECEIVABLES - Accounts Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounts Receivable
Current accounts receivable	$ 57,500	$ 48,600
Gross accounts receivable	67,114	48,628
Less: allowance for doubtful accounts	(12,121)	(12,724)
Total accounts receivable, net	54,993	35,904
Retail
Accounts Receivable
Current accounts receivable	22,178	13,659
Wholesale
Accounts Receivable
Current accounts receivable	35,322	$ 34,969
Noncurrent accounts receivable	$ 9,614