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Grant Revenue	9 Months Ended
Sep. 30, 2021
Disaggregation Of Revenue [Abstract]
Grant Revenue	8. Grant Revenue The Company recognizes revenue pursuant to grants, as described further in Note 2, by measuring the progress of the applicable research and development services provided over time, based on the effort the Company expends and costs incurred, relative to the estimated total effort and costs to be incurred under the grant. This results in a percentage that the Company multiplies by the grant award amount to determine the amount of grant revenue to be recognized each period. This approach requires the Company to use judgement and make estimates of future expenditures. If the Company’s estimates or judgements change over the course of the term of the grant, it may affect the timing and amount of revenue that it recognizes in the current and future periods. During the three and nine months ended September 30, 2020, the Company recognized less than $0.1 million and $0.2 million of grant revenue, respectively, from awards by the NSF, NIH and FARA, respectively. No grant revenue was recognized for the three and nine months ended September 30, 2021.

Grant Revenue

9 Months Ended

Sep. 30, 2021

Disaggregation Of Revenue [Abstract]

8. Grant Revenue

The Company recognizes revenue pursuant to grants, as described further in Note 2, by measuring the progress of the applicable research and development services provided over time, based on the effort the Company expends and costs incurred, relative to the

estimated total effort and costs to be incurred under the grant. This results in a percentage that the Company multiplies by the grant award amount to determine the amount of grant revenue to be recognized each period. This approach requires the Company to use judgement and make estimates of future expenditures. If the Company’s estimates or judgements change over the course of the term of the grant, it may affect the timing and amount of revenue that it recognizes in the current and future periods.

During the three and nine months ended September 30, 2020, the Company recognized less than $0.1 million and $0.2 million of grant revenue, respectively, from awards by the NSF, NIH and FARA, respectively. No grant revenue was recognized for the three and nine months ended September 30, 2021.