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Disclosure - Income Taxes - Schedule of Net Deferred Tax Assets (Detail) link:presentationLink link:calculationLink link:definitionLink 100810 - Disclosure - Income Taxes - Summary of Changes In Valuation Allowance for Deferred Tax Assets (Detail) link:presentationLink link:calculationLink link:definitionLink 100820 - Disclosure - Income Taxes - Schedule of change in unrecognized tax benefits roll forward (Detail) link:presentationLink link:calculationLink link:definitionLink 100830 - Disclosure - Related Party Transactions - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 100840 - Disclosure - 401(k) Savings Plan - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink