INCOME TAXES - Schedule of Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Net operating loss carryforwards	$ 106,645	$ 82,179
Research and development credits	2,699	2,923
Share-based compensation	1,788	2,538
Accruals	563	1,161
Interest expense	12,677	4,451
Lease Liability	731	782
Capitalized start-up costs	6,279
Capitalized R&D costs	5,445	3,790
Other temporary differences	1,393	1,031
Gross deferred tax assets	138,220	98,855
Less: Valuation allowance	(133,990)	(94,472)
Total deferred tax assets	4,230	4,383
Deferred tax liabilities:
Capitalized software	(103)	(1,038)
Fixed assets	(646)
Right-of-use asset	(541)	(679)
Prepaid commission	(2,940)	(2,666)
Gross deferred tax liabilities	$ (4,230)	$ (4,383)