Quarterly report pursuant to Section 13 or 15(d)

INVESTMENTS (Details Narrative)

v3.23.1
INVESTMENTS (Details Narrative)
₩ / shares in Units, $ / shares in Units, ₩ in Millions
1 Months Ended
Sep. 28, 2020
USD ($)
$ / shares
Sep. 28, 2020
₩ / shares
Oct. 31, 2018
USD ($)
Feb. 28, 2022
USD ($)
Feb. 28, 2022
KRW (₩)
Mar. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Feb. 28, 2022
KRW (₩)
Dec. 31, 2018
USD ($)
Schedule Of Investments [Line Items]                  
Call option agreement date Sep. 28, 2020                
Realized net loss on investment bond       $ 126,000          
Other income       41,000          
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 Long Term Debt     $ 13,600,000            
Debt instrument, maturity date     Sep. 30, 2028            
Unsecured debt, additional borrowings           $ 1,100,000      
Notes Receivable Gross           $ 25,700,000 $ 25,000,000.0    
EJ Holdings, Inc. [Member] | Japan Industrial Partners [Member]                  
Schedule Of Investments [Line Items]                  
Equity method investment, ownership percentage                 60.00%
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% 2.10%              
Convertible bond initial conversion price | (per share) $ 8.00 ₩ 9,232              
Offset amount against principal amount of convertible bond       2,900,000       ₩ 3,500  
Cash proceeds to shortfall in revenue and profits       $ 310,000 ₩ 400        
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