Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

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