SIGNIFICANT ACCOUNTING POLICIES - Capital Advance receivable, net (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
SIGNIFICANT ACCOUNTING POLICIES
CA receivable, gross, beginning balance	$ 56,101	$ 67,682
CA extended to customers	109,713	193,567
Change in revenue receivables	44	117
CA collected from customers	(122,034)	(206,014)
Charge-offs, net of recoveries	(1,349)	(354)
CA receivable, gross, ending balance	42,475	54,998
Allowance for CA losses	(3,873)	(5,772)
CA receivable, net, ending balance	$ 38,602	$ 49,226