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Stock-based Compensation - Unvested Stock Option Activity (Details) - Long Term Incentive Plan
3 Months Ended
Mar. 31, 2022
$ / shares
shares
Number of Options  
Unvested, beginning balance (in shares) | shares 1,190,967
Granted (in shares) | shares 530,000
Vested (in shares) | shares (73,252)
Forfeited (in shares) | shares (48,061)
Unvested, ending balance (in shares) | shares 1,599,654
Weighted Average Grant Date Fair Value  
Unvested, beginning balance (in dollars per share) | $ / shares $ 2.53
Granted (in dollars per share) | $ / shares 1.20
Vested (in dollars per share) | $ / shares 3.03
Forfeited (in dollars per share) | $ / shares 2.56
Unvested, ending balance (in dollars per share) | $ / shares $ 2.06
Zero-Priced Options  
Number of Options  
Unvested, beginning balance (in shares) | shares 514,370
Granted (in shares) | shares 220,000
Vested (in shares) | shares (34,535)
Forfeited (in shares) | shares (12,935)
Unvested, ending balance (in shares) | shares 686,900
Weighted Average Grant Date Fair Value  
Unvested, beginning balance (in dollars per share) | $ / shares $ 5.29
Granted (in dollars per share) | $ / shares 2.59
Vested (in dollars per share) | $ / shares 6.21
Forfeited (in dollars per share) | $ / shares 5.35
Unvested, ending balance (in dollars per share) | $ / shares $ 4.38