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Short-term and Long-term Investments (Tables)
 12 Months Ended
Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]  
Summary of Amortized Cost, Gross Unrealized Gains and Losses and Fair Value of Investments The following table summarizes the amortized cost, gross unrealized gains and losses, and fair value of available-for-sale investments as of December 31, 2021:
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Aggregate
Fair Value
United States government debt securities$121,036 $— $(331)$120,705 
Certificates of deposit97 — — 97 
Total$121,133 $— $(331)$120,802 
The following table summarizes the amortized cost, gross unrealized gains and losses, and fair value of available-for-sale investments as of December 31, 2020:
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Aggregate
Fair Value
United States government debt securities$48,048 $14 $(1)$48,061 
Certificates of deposit264 — — 264 
Total$48,312 $14 $(1)$48,325 
Contractual Obligation, Fiscal Year Maturity
The estimated fair value of available-for-sale investments classified by their contractual maturities as of December 31, 2021 was:
Due within one year$72,240 
After one year through two years48,562 
Total$120,802