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Earnings (Loss) Per Common Share (Tables)
12 Months Ended
Dec. 31, 2021
Basic and fully diluted income (loss) per common share:  
Computation of diluted net income (loss) per share
         
   Years Ended
   December 31,
   2021  2020
Stock options   2,876,010    1,174,814 
Stock warrants   12,383,550    557,873 
Total shares excluded from calculation   15,259,560    1,732,687