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Stock Options - Summary of Restricted Shares (Details) - $ / shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Stock Options    
Number of Shares, Unvested at December 31, 2020 50,000 75,000
Number of Shares, Vested (25,000) (25,000)
Number of Shares, Unvested at June 30, 2021 25,000 50,000
Weighted-Average Grant Date Fair Value, Outstanding   $ 1.38
Weighted-Average Grant Date Fair Value, Outstanding $ 1.38