CONSOLIDATED STATEMENT OF EQUITY - USD ($)
Common Stock [Member]
Additional Paid in Capital [Member]
Shares in Treasury [Member]
Accumulated Deficit [Member]
Non-Controlling Interest [Member]
Total
Beginning Balance at Dec. 31, 2018 $ 46,246 $ 31,636,385   $ (26,921,347) $ (594,913) $ 4,166,371
Beginning Balance (Shares) at Dec. 31, 2018 46,245,917          
Stock-based compensation   10,642       $ 10,642
Exercise of stock options (shares)           0
Repurchase of shares $ (402) (123,743)       $ (124,145)
Repurchase of shares (Shares) (401,800)          
Shares in treasury     $ (9,430)     (9,430)
Income for the year       2,247,957 140,390 2,388,347
Ending Balance at Dec. 31, 2019 $ 45,844 31,523,284 9,430 (24,673,390) (454,523) 6,431,785
Ending Balance (Shares) at Dec. 31, 2019 45,844,117          
Stock-based compensation   196,115       196,115
Exercise of warrants $ 885 333,247       334,132
Exercise of warrants (shares) 885,000          
Exercise of stock options $ 346 71,566       $ 71,912
Exercise of stock options (shares) 346,500         346,500
Repurchase of shares $ (258) (126,167) 9,430     $ (116,995)
Repurchase of shares (Shares) (258,600)          
Shares in treasury     (4,857)     (4,857)
Income for the year       1,860,249 141,782 2,002,031
Ending Balance at Dec. 31, 2020 $ 46,817 31,998,045 (4,857) (22,813,141) (312,741) 8,914,123
Ending Balance (Shares) at Dec. 31, 2020 46,817,017          
Stock-based compensation   2,504       2,504
Exercise of stock options $ 255 94,674       $ 94,929
Exercise of stock options (shares) 255,000         255,000
Repurchase of shares $ (384) (324,708) 4,857     $ (320,235)
Repurchase of shares (Shares) (384,500)          
Shares in treasury     (13,294)     (13,294)
Income for the year       835,976 121,545 957,521
Ending Balance at Dec. 31, 2021 $ 46,688 $ 31,770,515 $ (13,294) $ (21,977,165) $ (191,196) $ 9,635,548
Ending Balance (Shares) at Dec. 31, 2021 46,687,517