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STOCK-BASED COMPENSATION - Schedule of fair value option assumptions (Details) - 2018 Equity Incentive Plan	6 Months Ended
	Jun. 30, 2026 $ / shares
Stock-Based Compensation (Details) [Line Items]
Weighted average grant date fair value (in dollars per share)	$ 1.38
Stock Options
Stock-Based Compensation (Details) [Line Items]
Expected volatility	116.00%
Expected dividend yield	0.00%
Expected term (in years)	5 years 10 months 24 days
Risk-free interest rate	4.20%

X

- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Weighted average grant-date fair value of options vested.

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