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INCOME TAXES - Effective Tax Rate (Details)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
U. S. Federal tax benefit at statutory rate	21.00%	21.00%	21.00%
State income taxes, net of federal benefit	5.80%	2.70%	3.40%
Non-deductible expenses and other	(1.10%)	(1.20%)	(0.40%)
Non-deductible warrant expenses	0.00%	0.00%	0.40%
Share-based compensation	(6.60%)	(1.70%)	7.00%
Deduction limitation on executive compensation	(0.50%)	(0.30%)	(14.10%)
Change in valuation allowance, net	(20.60%)	(21.40%)	(19.50%)
Research and development credits	1.50%	0.50%	2.00%
Effective tax rate	(0.50%)	(0.40%)	(0.20%)

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Effective Income Tax Rate Reconciliation, Limitation On Executive Compensation, Percent

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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 research tax credit.

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