Revenue Recognition - Summary of Revenue Disaggregated by Research Program (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)
Disaggregation Of Revenue [Line Items]
Total collaboration revenue	$ 19,538
MAT2A Program
Disaggregation Of Revenue [Line Items]
Total collaboration revenue	6,048
Pol Theta Program
Disaggregation Of Revenue [Line Items]
Total collaboration revenue	7,917
WRN Program
Disaggregation Of Revenue [Line Items]
Total collaboration revenue	$ 5,573