EQUITY - COMMON STOCK (Details)						3 Months Ended	12 Months Ended
	Mar. 20, 2021 USD ($) shares	Jul. 31, 2020 USD ($) $ / shares shares	Jun. 24, 2020 USD ($) $ / shares	Jun. 24, 2020 $ / shares shares	Jun. 11, 2020 $ / shares shares	Mar. 31, 2020 shares	Dec. 31, 2021 USD ($) Vote shares	Dec. 31, 2020 USD ($) shares
EQUITY
Common stock, shares authorized | shares							200,000,000	200,000,000
Net proceeds from issuance of stock							$ 428,000	$ 42,718,000
Repayment of interest							1,497,000	542,000
Accounts payable							$ 25,714,000	10,704,000
Shares issued value								$ 43,524,000
Stock options exercised (in shares) | shares							492,460	3,751
Chairman And Chief Executive Officer
EQUITY
Restricted stock issued | shares						186,484
Vesting period (in years)						1 year
Everest Display, Inc.
EQUITY
Accounts payable								$ 3,000,000.0
Conversion of accounts payable liabilities								1,300,000
Gain (loss) on conversion of accounts payable								1,700,000
Lind Global
EQUITY
Convertible debt loss							$ 3,800,000	3,100,000
Lind Global | Note payable
EQUITY
Debt converted into shares, value							$ 13,700,000	$ 4,900,000
Class A common stock
EQUITY
Common stock, shares authorized | shares							200,000,000
Number of votes per share | Vote							1
Common stock, shares issued | shares							63,821,901	53,343,518
Common stock, shares outstanding | shares							63,821,901	53,343,518
Gross proceeds from issuance of stock			$ 11,500,000
Net proceeds from issuance of stock			10,600,000
Underwriting discounts and offering expenses			$ 906,000
In lieu of payment for services rendered (in shares) | shares								7,111
In lieu of payment for services rendered								$ 8,000
Class A common stock | Chairman And Chief Executive Officer
EQUITY
Shares issued value	$ 2,500,000
Vesting period (in years)	1 year
In lieu of payment for services rendered (in shares) | shares	875,245
Class A common stock | Everest Display, Inc.
EQUITY
Conversion of accounts payable liabilities (in shares) | shares								2,200,000
Class A common stock | Everest Display, Inc. | Accounts payable
EQUITY
Debt converted into shares | shares							793,375
Debt converted into shares, value							$ 1,600,000
Gain from settlements of liabilities							356,700
Accounts payable							$ 2,000,000
Class A common stock | Lind Global
EQUITY
Debt converted into shares | shares								310,000
Class A common stock | Lind Global | Note payable
EQUITY
Debt converted into shares | shares							7,900,000	6,200,000
Class A common stock | Public offering
EQUITY
Public offering (in shares) | shares		17,250,000			13,333,333
Share price per share | $ / shares		$ 2.00	$ 0.75	$ 0.75	$ 0.75
Gross proceeds from issuance of stock		$ 34,500,000
Net proceeds from issuance of stock		32,000,000.0
Underwriting discounts and offering expenses		$ 2,500,000
Class A common stock | Over-Allotment Option
EQUITY
Public offering (in shares) | shares				1,999,667
Class B common stock
EQUITY
Common stock, shares authorized | shares							50,000,000
Number of votes per share | Vote							0
Common stock, shares outstanding | shares							0	0