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STOCK-BASED COMPENSATION, Restricted Stock and Stock-Based Compensation Expense (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
General and Administrative Expense [Member]
Stock-based Compensation [Abstract]
Stock based compensation expense	$ 800,000	$ 17,000
Research and Development Expense [Member]
Stock-based Compensation [Abstract]
Stock based compensation expense	$ 400,000	$ 400,000
Restricted Common Units [Member]
Stock-based Compensation [Abstract]
Restricted stock replaced during the period (in shares)	3,000
Unvested restricted common stock forfeited (in shares)	9,000
Unvested restricted stock outstanding (in shares)	1,323,000	0	240,000
Restricted Common Shares [Member]
Stock-based Compensation [Abstract]
Restricted stock replaced during the period (in shares)	630,000
Stock based compensation expense		$ 300,000
Unvested restricted common stock forfeited (in shares)	78,000
Unvested restricted stock outstanding (in shares)	0

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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