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Equity Incentive Plan - Summary of Restricted Share Awards (Details) - Restricted Stock - $ / shares
6 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Number of Shares    
Nonvested at beginning of the period (in shares) 1,667 5,001
Granted (in shares) 0 0
Vested (in shares) 0 (3,334)
Forfeited (in shares) 0 0
Nonvested at end of the period (in shares) 1,667 1,667
Weighted - Average Grant Date Fair Value    
Nonvested at beginning of the period (in dollars per share) $ 17.40 $ 18.33
Granted (in dollars per share) 0 0
Vested (in dollars per share) 0 18.80
Forfeited (in dollars per share) 0 0
Nonvested at end of the period (in dollars per share) $ 17.40 $ 17.40