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SHAREHOLDERS’ EQUITY (Details Narrative) - USD ($)
1 Months Ended
May 24, 2019
Dec. 13, 2018
Sep. 30, 2021
Dec. 31, 2019
Jul. 31, 2019
Jun. 30, 2019
Dec. 31, 2017
Dec. 31, 2021
Dec. 31, 2020
Apr. 04, 2014
Dec. 31, 2007
Common stock, shares authorized               20,000,000 20,000,000    
Common stock, par value               $ 0.01 $ 0.01    
Common stock, shares outstanding               10,094,322 10,094,322    
Treasury stock, common, shares               59,311 59,311    
Common stock, shares issued               10,153,633 10,153,633    
Foreign subsidiary's noncontrolling interest     $ 129,000 $ 65,000 $ 137,000            
Stock repurchase program, authorized amount                     $ 5,000,000
Since Inception [Member]                      
Stock repurchased during period, shares             61,811        
Stock repurchased during period, value             $ 932,000        
Approximate cost per share             $ 15        
Maximum [Member]                      
Stock repurchase program, authorized amount                   $ 1,000,000  
Restricted Stock Unit Awards [Member]                      
Share-based compensation arrangement by share-based payment award, options, grants in period, gross 500 2,000                  
Share-based payment arrangement, expensed and capitalized, amount           $ 217,000          
Non Employee Directors [Member]                      
Number of shares distributed from treasury to non-employee directors during period           2,500