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Stock-Based Compensation - Summary of Stock Options Outstanding (Details) - $ / shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Options Granted 415,742 436,217
Stock Options [Member]    
Options Outstanding, Beginning balance 589,125 434,012
Options Granted 255,000 180,000
Options Exercised (1,875)
Options Forfeited (3,937) (24,887)
Options Outstanding, Ending balance 838,313 589,125
Options Exercisable, Ending balance 725,813 499,125
Weighted Average Exercise Price, Outstanding, Beginning balance $ 3.74 $ 4.62
Weighted Average Exercise Price, Granted 2.09 3.01
Weighted Average Exercise Price, Exercised 4.16
Weighted Average Exercise Price, Forfeited (12.14) (13.78)
Weighted Average Exercise Price, Outstanding, Ending balance 3.2 3.74
Weighted Average Exercise Price, Exercisable, Ending balance $ 3.37 $ 3.87