Quarterly report pursuant to Section 13 or 15(d)

INVESTMENTS (Details Narrative)

v3.21.2
INVESTMENTS (Details Narrative) - USD ($)
1 Months Ended
Sep. 28, 2020
Feb. 21, 2020
Oct. 31, 2020
Oct. 31, 2018
Mar. 31, 2021
Dec. 31, 2020
Dec. 31, 2018
Schedule Of Investments [Line Items]              
Secured debt percentage   10.00%          
Call option agreement date Sep. 28, 2020            
Debt instrument, maturity date   Apr. 21, 2021          
EJ Holdings, Inc. [Member]              
Schedule Of Investments [Line Items]              
Secured debt percentage       1.00%      
Investment amount             $ 32,000
Percentage of voting interest             40.00%
Unsecured debt     $ 6,500,000 $ 13,600,000      
Debt instrument, maturity date     Sep. 30, 2028 Sep. 30, 2028      
Debt instrument, frequency of periodic payment     payable on September 30 of each year beginning in 2021        
Loan receivables         $ 19,000,000.0 $ 18,600,000  
Maximum [Member]              
Schedule Of Investments [Line Items]              
Percentage of principal amount of convertible bond to be repurchased 50.00%            
Telcon, Inc. ("Telcon") [Member]              
Schedule Of Investments [Line Items]              
Convertible bond maturity date Oct. 16, 2030            
Secured debt percentage 2.10%            
Convertible bond initial conversion price $ 8.00            
Japan Industrial Partners [Member] | EJ Holdings, Inc. [Member]              
Schedule Of Investments [Line Items]              
Equity method investment, ownership percentage             60.00%
Convertible Bond Purchase Agreement [Member] | Telcon, Inc. ("Telcon") [Member]              
Schedule Of Investments [Line Items]              
Purchase of principal amount of convertible bond at face value $ 26,100,000