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Short-term and Long-term Investments
3 Months Ended
Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]  
Short-term and Long-term Investments Short-term and Long-term Investments
The Company's investments are classified as available-for-sale. The following table summarizes the amortized cost, gross unrealized gains and losses, and fair value of available-for-sale investments as of March 31, 2023:
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Aggregate
Fair Value
U.S. government debt securities$96,820 $— $(498)$96,322 
U.S. agency securities992 — — 992 
Certificates of deposit4,497 — — 4,497 
Total$102,309 $— $(498)$101,811 
The following table summarizes the amortized cost, gross unrealized gains and losses, and fair value of available-for-sale investments as of December 31, 2022:
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Aggregate
Fair Value
U.S. government debt securities$51,755 $— $(760)$50,995 
Certificates of deposit97 — — 97 
Total$51,852 $— $(760)$51,092 
The estimated fair value of available-for-sale investments classified by their contractual maturities as of March 31, 2023 was:
Due within one year$94,351 
After one year through two years7,460 
Total$101,811 
Changes in market interest rates and bond yields cause certain investments to fall below their cost basis, resulting in unrealized losses on investments. We do not intend to sell these investments nor is it more likely than not that the Company will be required to sell these investments, prior to maturity or recovery of amortized cost.