STOCKHOLDER RIGHTS PLAN (Details) - $ / shares	Oct. 15, 2018	Mar. 31, 2022	Dec. 31, 2021
Class of Stock [Line Items]
Rights	1
Number of securities called by each warrant or right	0.01
Common stock, par value (dollars per share)		$ 0.001	$ 0.001
Warrants and Rights, Preferred Stock to Common Stock Conversion, Treatment (in shares)	1
Warrants And Rights, Not Exercisable, Number of Days After Public Announcement of Acquiring Person	10 days
Warrants And Rights, Not Exercisable, Number of Days After Tender or Exchange Offer Is Completed By Acquiring Person	10 days
Warrants and Rights, Option to Exercise, Market Value Multiplier of Purchase Price	2
Temporary Equity, Redemption Price Per Share (dollars per share)	$ 0.001
Series B Preferred Stock
Class of Stock [Line Items]
Number of securities called by each warrant or right	0.01
Common stock, par value (dollars per share)	$ 3.50
Minimum
Class of Stock [Line Items]
Ownership Percentage, Common Stock, Without Approval of Board	4.99%