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Stock-Based Compensation - Summary of Stock Options Outstanding (Details) - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Options Granted 436,217 284,384
Options Exercised  
Stock Options [Member]    
Options Outstanding, Beginning balance 434,012 350,269
Options Granted 180,000 160,000
Options Exercised
Options Forfeited (24,887) (76,257)
Options Outstanding, Ending balance 589,125 434,012
Options Exercisable, Ending balance 499,125 354,012
Weighted Average Exercise Price, Outstanding, Beginning balance $ 4.62 $ 13.44
Weighted Average Exercise Price, Granted 3.01 2.20
Weighted Average Exercise Price, Exercised
Weighted Average Exercise Price, Forfeited (13.78) (45.52)
Weighted Average Exercise Price, Outstanding, Ending balance 3.74 4.62
Weighted Average Exercise Price, Exercisable, Ending balance $ 3.87 $ 5.17