STOCK-BASED COMPENSATION - Summary of the Company's stock options (Details)	9 Months Ended
Sep. 30, 2020 USD ($) $ / shares shares
STOCK-BASED COMPENSATION
Shares available for grant, Beginning \| shares	9,821,250
Number of Shares Granted \| shares	2,130,000
Number of Shares Exercised \| shares	0
Number of Shares Forfeited \| shares	0
Shares available for grant, Ending \| shares	11,951,250
Vested and unvested but expected to vest, September 30, 2020 \| shares	11,811,875
Number of Shares Exercisable \| shares	8,745,500
Weighted Average exercise price, Beginning \| $ / shares	$ 0.28
Weighted Average Exercise Price Granted \| $ / shares	0.30
Weighted Average Exercise Price Exercised \| $ / shares	0.00
Weighted Average Exercise Price Forfeited \| $ / shares	0.00
Weighted Average exercise price, Ending \| $ / shares	0.28
Weighted Average Exercise Vested and unvested but expected to vest, September 30, 2020 \| $ / shares	0.28
Weighted Average Exercise Price Exercisable at September 30, 2020 \| $ / shares	$ 0.29
Weighted Average Remaining Contractual Life Options Outstanding, September 30, 2020	5 years 7 months 6 days
Weighted Average Remaining Contractual Life Vested and unvested but expected to vest, September 30, 2020	5 years 7 months 6 days
Weighted Average Remaining Contractual Life Exercisable at September 30, 2020	4 years 4 months 24 days
Aggregate Intrinsic Value Options Outstanding, September 30, 2020 \| $	$ 1,637,700
Aggregate Intrinsic Value Vested and unvested but expected to vest, September 30, 2020 \| $	1,618,615
Aggregate Intrinsic Value Exercisable at September 30, 2020 \| $	$ 1,172,288

Number of shares (or share units) exercises during the current period.

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Shares (or other type of equity) for issuance on granting of outstanding awards.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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