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Stock-Based Compensation - Summary of Restricted Stock Activity (Details) - Restricted Stock [Member]
3 Months Ended
Mar. 31, 2021
$ / shares
shares
Number of Restricted shares, Non-vested Beginning Balance | shares 720,125
Number of Restricted shares, Granted | shares 450,000
Number of Restricted shares, Vested | shares (479,250)
Number of Restricted shares, Forfeited | shares (7,500)
Number of Restricted shares, Non-vested Ending Balance | shares 683,375
Weighted average grant date fair value, Non-vested Beginning Balance | $ / shares $ 1.69
Weighted average grant date fair value, Granted | $ / shares 2.76
Weighted average grant date fair value, Vested | $ / shares (1.99)
Weighted average grant date fair value, Forfeited | $ / shares (1.08)
Weighted average grant date fair value, Non-vested Ending Balance | $ / shares $ 2.14