Commitment and Contingencies - Summary of Balance Sheet Classification of Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Commitments And Contingencies Disclosure [Abstract]
Operating lease liability – current	$ 3,645
Operating lease liability – noncurrent	29,669
Total operating lease liabilities	33,314
Accrued expenses and other current liabilities	$ 64	$ 172
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	rvmd:AccruedResearchAndDevelopmentExpenseCurrent
Total financing lease liabilities	$ 64
Total lease liabilities	$ 33,378