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Equity Compensation Plans - Restricted Stock Units Activities (Details) - Restricted Stock Units - $ / shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Shares      
Beginning of period (in shares) 275,173 4,876 0
Granted (in shares) 205,482 270,297 4,876
Vested (in shares) (68,076) 0 0
Forfeited (in shares) (130,155) 0 0
Balance at End of Period (in shares) 282,424 275,173 4,876
Weighted Average Grant Date Fair Market Value      
Beginning of period (in dollars per share) $ 15.65 $ 15.38 $ 0
Granted (in dollars per share) 16.86 15.66 15.38
Vested (in dollars per share) 15.65 0 0
Forfeited (in dollars per share) 16.60 0 0
Balance at End of Period (in dollars per share) $ 16.09 $ 15.65 $ 15.38