SIGNIFICANT ACCOUNTING POLICIES - Capital Advance receivable, net - timing of expected collections (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Total	$ 42,475	$ 56,101	$ 54,998	$ 67,682
Overdue
Financing Receivable, Past Due [Line Items]
Total	3,318	2,951
Due in less than 30 days
Financing Receivable, Past Due [Line Items]
Total	8,178	9,511
Due in 30-60 days
Financing Receivable, Past Due [Line Items]
Total	6,753	12,457
Due in 60-90 days
Financing Receivable, Past Due [Line Items]
Total	18,365	23,008
Due in more than 90 days
Financing Receivable, Past Due [Line Items]
Total	$ 5,861	$ 8,174