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INCOME TAXES - Reconciliation of effective tax rate (Details)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of the statutory income tax rate to effective tax rate
Taxes at domestic rate	21.00%	21.00%
State and local income taxes	(1.40%)
Non-US statutory rates	1.80%	2.90%
Permanent items	(1.60%)
Nondeductible Research Expense	(7.40%)	(6.30%)
Change in valuation allowance	(16.90%)	(17.90%)
Warrant revaluation	1.10%
Other	3.40%	0.10%
Effective tax rate		(0.20%)

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- Definition

Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to warrant revaluation.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible expenses.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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