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STOCKHOLDERS' EQUITY - Shares Issued through the At-the-Market Offering Program (Details) - At-the-Market Equity Offering Program - USD ($)	2 Months Ended	12 Months Ended
	Mar. 01, 2022	Dec. 31, 2021	Dec. 31, 2019
STOCKHOLDERS' EQUITY
Number of shares sold	17,259	106,290	180,120
Proceeds from sale of common stock, net of commissions	$ 604,000	$ 3,379,000	$ 5,392,000
Payment of commissions on sale of shares	$ 12,000	69,000	54,000
Payment of offering costs on sale of shares		$ 65,000	$ 192,000

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The cash outflow for commissions incurred directly with the issuance of an equity security.

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The cash inflow from the additional capital contribution to the entity.

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