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Stock-Based Compensation - Schedule of Unrecognized Compensation Cost from Unvested Awards (Details)
$ in Thousands
Mar. 31, 2021
USD ($)
Unvested stock options $ 73
Unvested restricted stock awards
Total unrecognized compensation expense 73
2021 (Remaining Nine Months) [Member]  
Unvested stock options 49
Unvested restricted stock awards
Total unrecognized compensation expense 49
2022 [Member]  
Unvested stock options 20
Unvested restricted stock awards
Total unrecognized compensation expense 20
2023 [Member]  
Unvested stock options 4
Unvested restricted stock awards
Total unrecognized compensation expense 4
2024 [Member]  
Unvested stock options
Unvested restricted stock awards
Total unrecognized compensation expense