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STOCKHOLDERS' EQUITY - Compensation cost (Details) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expenses	$ 2,035,000	$ 3,562,000	$ 4,377,000	$ 10,420,000
Cost of revenues
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expenses	6,000	5,000	16,000	12,000
Research and development
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expenses	441,000	448,000	966,000	1,563,000
Sales and marketing
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expenses	583,000	1,650,000	1,398,000	3,406,000
General and administrative
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expenses	$ 1,005,000	$ 1,459,000	$ 1,997,000	$ 5,439,000