INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets:
Net operating loss carry-forward	$ 54,453	$ 34,029
Inventory	2,020	220
Stock-based compensation	862	1,144
Start-up expenditures	155	175
Research and development credit carryforward	1,424	1,205
Accrued bonus	133	458
Severance liability	95	151
Allowance for doubtful accounts	2
Research and development costs	1,617	813
Operating lease obligations	476	229
Capital loss on investment	2,449	2,209
Capitalized legal fees	581
Other	1,758	50
Total deferred tax assets	66,025	40,683
Deferred tax liabilities:
Machinery and equipment	(283)	(221)
Patents and trademarks	(193)	(203)
Operating lease right-of-use assets	(467)	(225)
Other intangible assets	(385)	(334)
Total deferred tax liabilities	(1,328)	(983)
Valuation allowance	(64,763)	(39,759)
Net deferred taxes	$ (66)	$ (59)