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Stockholders' Equity - Activity of Restricted Stock Issuances (Details) - Restricted Stock and Restricted Stock Units - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Number of Unvested Shares    
Beginning balance (in shares) 429,467 502,097
Granted (in shares) 281,384 149,302
Vested (in shares) (234,367) (221,932)
Forfeitures (in shares) (7,500) 0
Ending balance (in shares) 468,984 429,467
Weighted Average Grant Date Fair Value    
Beginning balance (in dollars per share) $ 4.48 $ 3.32
Granted (in dollars per share) 10.71 6.48
Vested (in dollars per share) 4.22 3.19
Forfeitures (in dollars per share) 11.94 0
Ending balance (in dollars per share) $ 8.58 $ 4.48
Aggregate Grant Date Fair Value of Unvested Shares    
Aggregate grant date fair value of unvested shares, beginning balance $ 1,924 $ 1,665
Granted 3,014 967
Vested (989) (708)
Forfeitures (90) 0
Aggregate grant date fair value of unvested shares, ending balance $ 3,859 $ 1,924