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Stock-Based Compensation - Summary of Non-Vested RSU Grants (Details) - Restricted stock
12 Months Ended
Dec. 31, 2020
$ / shares
shares
Restricted Stock Units  
Non-vested at beginning of period (in shares) | shares 573,066
Granted (in shares) | shares 0
Vested (in shares) | shares (289,281)
Forfeited (in shares) | shares (125,126)
Non-vested at end of period (in shares) | shares 158,659
Weighted Average Grant Date Fair Value Per Unit  
Non-vested at beginning of period (in dollars per share) | $ / shares $ 4.46
Granted (in dollars per share) | $ / shares 0
Vested (in dollars per share) | $ / shares 5.84
Forfeited (in dollars per share) | $ / shares 3.71
Non-vested at end of period (in dollars per share) | $ / shares $ 2.53