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SEGMENT INFORMATION - Schedule of Assets and Revenues Major Geographic Regions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 204,495	$ 151,976	$ 107,518
Revenues, percentage	100.00%	100.00%	100.00%
Asia & Pacific
Disaggregation of Revenue [Line Items]
Revenues	$ 185,035	$ 131,516	$ 82,655
Revenues, percentage	90.00%	86.00%	77.00%
PRC
Disaggregation of Revenue [Line Items]
Revenues	$ 132,469	$ 93,326	$ 66,160
Revenues, percentage	65.00%	61.00%	62.00%
India
Disaggregation of Revenue [Line Items]
Revenues	$ 47,323	$ 17,805	$ 8,570
Revenues, percentage	23.00%	12.00%	8.00%
Russia
Disaggregation of Revenue [Line Items]
Revenues	$ 305	$ 12,213	$ 5,671
Revenues, percentage	0.00%	8.00%	5.00%
Other Asia & Pacific countries
Disaggregation of Revenue [Line Items]
Revenues	$ 4,938	$ 8,172	$ 2,254
Revenues, percentage	2.00%	5.00%	2.00%
Europe
Disaggregation of Revenue [Line Items]
Revenues	$ 15,809	$ 19,542	$ 24,314
Revenues, percentage	8.00%	13.00%	23.00%
United Kingdom
Disaggregation of Revenue [Line Items]
Revenues	$ 3,976	$ 11,386	$ 11,544
Revenues, percentage	2.00%	7.00%	11.00%
Italy
Disaggregation of Revenue [Line Items]
Revenues	$ 6,389	$ 3,140	$ 5,965
Revenues, percentage	3.00%	2.00%	6.00%
Other European countries
Disaggregation of Revenue [Line Items]
Revenues	$ 5,444	$ 5,016	$ 6,805
Revenues, percentage	3.00%	4.00%	6.00%
United States
Disaggregation of Revenue [Line Items]
Revenues	$ 3,651	$ 918	$ 549
Revenues, percentage	2.00%	1.00%	0.00%

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