STOCKHOLDERS' EQUITY, Common Stock and Preferred Stock (Details) $ / shares in Units, $ in Thousands		3 Months Ended		12 Months Ended
	Nov. 14, 2019 USD ($) Number $ / shares shares	Mar. 31, 2022 USD ($) Vote $ / shares shares	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($) $ / shares
Dividends [Abstract]
Dividends paid on shares of Series A preferred stock		$ 304	$ 304
Common Stock [Member]
Common Stock [Abstract]
Common stock voting rights per share | Vote		1
Cash dividends declared or paid		$ 0
Preferred Stock [Abstract]
Number of shares issued upon conversion of preferred stock (in shares) | shares		423,729
Series A Preferred Stock [Member]
Preferred Stock [Abstract]
Amount raised from issuance of stock	$ 12,700
Issuance of series A convertible preferred stock, net of issuance costs (in shares) | shares	12,700
Preferred stock, par value (in dollars per share) | $ / shares	$ 0	$ 0		$ 0
Liquidation preference per share (in dollars per share) | $ / shares				$ 1,000
Conversion price (in dollars per share) | $ / shares	$ 2.36	$ 5.31
Stock issuance cost		$ 700
Dividends [Abstract]
Dividend rate	9.60%
First dividend payment date	Sep. 30, 2020
Increase in dividend rate on fifth anniversary	2.40%
Dividends paid on shares of Series A preferred stock		$ 300		$ 1,200
Holders of Series A Preferred Stock Right to Convert into Common Stock [Abstract]
Conversion amount	$ 1,000
Mandatory Conversion [Abstract]
Consecutive trading days, in which common stock exceeds the conversion price	20 days
Redemption [Abstract]
Amount of adjustment provided in charter agreement after fifth anniversary	$ 1,000
Registration Rights Agreement [Abstract]
Number of underwritten offerings | Number	2
Series A Preferred Stock [Member] | Minimum [Member]
Dividends [Abstract]
Dividend rate if failure to perform certain obligations	2.00%
Holders of Series A Preferred Stock Right to Convert into Common Stock [Abstract]
Percentage of common stock owned by holder and affiliates	19.99%
Mandatory Conversion [Abstract]
Weighted average price of common stock equals or exceeds the conversion price	2.25
Number of shares traded on each trading day (in shares) | shares	20,000
Registration Rights Agreement [Abstract]
Gross proceeds from underwritten offerings	$ 5,000
Series A Preferred Stock [Member] | Maximum [Member]
Dividends [Abstract]
Dividend rate if failure to perform certain obligations	14.00%