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Stock-Based Compensation - Summary of Time Based Restricted Stock Grant Activity (Details) - Time-Based Restricted Stock Grants
9 Months Ended
Sep. 30, 2020
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Unvested Beginning, Stock | shares 39,932
Granted, Stock | shares 10,880
Vested, Stock | shares (13,768)
Unvested Ending, Stock | shares 37,044
Unvested Beginning, Weighted-Average Grant-Date Fair Value | $ / shares $ 4.31
Granted, Weighted-Average Grant-Date Fair Value | $ / shares 3.58
Vested, Weighted-Average Grant-Date Fair Value | $ / shares 4.27
Unvested Ending, Weighted-Average Grant-Date Fair Value | $ / shares $ 4.11