SIGNIFICANT ACCOUNTING POLICIES - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Significant Accounting Policies [Line Items]
Revenue	$ 64,414	$ 33,372	$ 101,082	$ 48,310
PRC
Significant Accounting Policies [Line Items]
Revenue	33,946	21,650	53,784	32,292
Other Asia & Pacific countries
Significant Accounting Policies [Line Items]
Revenue	24,622	7,434	38,026	9,276
Asia & Pacific
Significant Accounting Policies [Line Items]
Revenue	58,568	29,084	91,810	41,568
Europe
Significant Accounting Policies [Line Items]
Revenue	4,880	4,231	7,631	6,558
U.S.
Significant Accounting Policies [Line Items]
Revenue	$ 966	$ 57	$ 1,641	$ 184