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v3.21.2

Summary of Significant Accounting Policies - Additional Information (Detail) | 9 Months Ended
--- | ---
Sep. 30, 2021 USD ($) shares
Subsidiary Sale Of Stock [Line Items] |
Allowance for doubtful accounts | $ | $ 0
ASU 2019-12 |
Subsidiary Sale Of Stock [Line Items] |
Change in Accounting Principle, Accounting Standards Update, Adopted | true
Change in Accounting Principle, Accounting Standards Update, Adoption Date | Mar. 31, 2021
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect | true
December 2020 Public Offering | Pre-funded Warrants |
Subsidiary Sale Of Stock [Line Items] |
Number of warrants issued to purchase common stock (in shares) | shares | 5,260,000
Minimum |
Subsidiary Sale Of Stock [Line Items] |
Contract with customer, payment term | 70 days
Maximum |
Subsidiary Sale Of Stock [Line Items] |
Contract with customer, payment term | 90 days
Customer contract cost, amortization periods | 1 year

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