Annual report [Section 13 and 15(d), not S-K Item 405]

INVESTMENTS (Details Narrative)

v3.25.1
INVESTMENTS (Details Narrative)
₩ / shares in Units, $ / shares in Units, ₩ in Millions
 1 Months Ended 12 Months Ended
Dec. 30, 2024
Dec. 28, 2023
USD ($)
Dec. 28, 2023
JPY (¥)
Sep. 28, 2020
USD ($)
$ / shares
Sep. 28, 2020
₩ / shares
Apr. 30, 2024
USD ($)
Apr. 30, 2024
KRW (₩)
Apr. 30, 2023
USD ($)
Apr. 30, 2023
KRW (₩)
Oct. 31, 2018
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Apr. 30, 2024
KRW (₩)
Apr. 30, 2023
KRW (₩)
Dec. 31, 2018
USD ($)
Oct. 31, 2018
JPY (¥)
Schedule Of Investments [Line Items]                                
Reverse stock split reverse stock split at a rate of 1-for-10                              
Reverse stock split, ratio 0.1                              
Call option agreement date       Sep. 28, 2020                        
Realized net gain (loss) on investment bond           $ 347,000   $ 106,000                
Foreign currency translation adjustments                     $ 54,000 $ (977,000)        
Net loan receivable from EJ Holdings                     16,869,000 16,869,000        
Niihara International, Inc [Member]                                
Schedule Of Investments [Line Items]                                
Shares sale and assignment   $ 25,304 ¥ 3,600,000                          
EJ Holdings, Inc. [Member]                                
Schedule Of Investments [Line Items]                                
Secured debt percentage                   1.00%           1.00%
Investment amount                             $ 32,000  
Percentage of voting interest                             40.00%  
Unsecured debt                   $ 13,600,000            
Debt instrument, maturity date                   Sep. 30, 2028            
Unsecured debt, additional borrowings                       $ 2,600,000        
Foreign currency translation adjustments   $ 1,500,000                            
Net loan receivable from EJ Holdings                     $ 16,900,000          
EJ Holdings, Inc. [Member] | Unsecured Debt Due On December 28, 2027 [Member]                                
Schedule Of Investments [Line Items]                                
Aggregated principal amount | ¥                               ¥ 3,637,335,720
Debt instrument, maturity date                   Dec. 28, 2027            
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             Oct. 16, 2030          
Secured debt percentage       2.10% 2.10%           2.10%          
Convertible bond initial conversion price | (per share)       $ 8 ₩ 9,232                      
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                        
API Supply Agreement [Member] | Telcon RF Pharmaceuticals, Inc. ("Telcon") [Member]                                
Schedule Of Investments [Line Items]                                
Offset amount against principal amount of convertible bond           2,500,000   2,200,000         ₩ 3,500 ₩ 2,900    
Cash proceeds to shortfall in revenue and profits           $ 640,000 ₩ 893 $ 236,000 ₩ 307