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Available-for-Sale Securities
3 Months Ended
Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]  
Available-for-Sale Securities

6. Available-for-Sale Securities

As of March 31, 2023, the fair value of available-for-sale securities by type of security was as follows:

 

 

 

March 31, 2023

 

 

 

Amortized
Cost

 

 

Gross
Unrealized
Gain

 

 

Gross
Unrealized
Loss

 

 

Fair
Value

 

Investments:

 

 

 

 

 

 

 

 

 

 

 

 

Treasury bills

 

$

19,989

 

 

$

5

 

 

$

 

 

$

19,994

 

Corporate bond securities

 

 

866

 

 

 

 

 

 

 

 

 

866

 

 

$

20,855

 

 

$

5

 

 

$

 

 

$

20,860

 

 

As of December 31, 2022, the fair value of available-for-sale securities by type of security was as follows:

 

 

 

December 31, 2022

 

 

 

Amortized
Cost

 

 

Gross
Unrealized
Gain

 

 

Gross
Unrealized
Loss

 

 

Fair
Value

 

Investments:

 

 

 

 

 

 

 

 

 

 

 

 

Treasury bill

 

$

34,780

 

 

$

 

 

$

(30

)

 

$

34,750

 

Corporate bond securities

 

 

23,626

 

 

 

 

 

 

(38

)

 

 

23,588

 

 

$

58,406

 

 

$

 

 

$

(68

)

 

$

58,338

 

 

The estimated fair value and amortized cost of the Company’s available-for-sale securities as of March 31, 2023 by contractual maturity are summarized as follows:

 

 

March 31, 2023

 

 

 

Amortized
Cost

 

 

Fair
Value

 

Due in one year or less

 

$

20,855

 

 

$

20,860

 

Total available-for-sale securities

 

$

20,855

 

 

$

20,860

 

 

The weighted average maturity of the Company’s available-for-sale securities as of March 31, 2023 was approximately 0.5 years.

 

The estimated fair value and amortized cost of the Company’s available-for-sale securities as of December 31, 2022 by contractual maturity are summarized as follows:

 

 

 

December 31, 2022

 

 

 

Amortized
Cost

 

 

Fair
Value

 

Due in one year or less

 

$

58,406

 

 

$

58,338

 

Total available-for-sale securities

 

$

58,406

 

 

$

58,338

 

The weighted average maturity of the Company’s available-for-sale securities as of December 31, 2022 was approximately 0.5 years.