SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Disaggregate revenue (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Partner and Marketplace	$ 3,812	$ 3,178
Enterprise	3,094	2,610
Total revenues	$ 6,906	$ 5,788

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details