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Supplementary Balance Sheet Information (Tables)
 6 Months Ended
Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Investments Available-for-sale
Investments available for sale consisted of the following:

As of June 30, 2024
(in thousands)Amortized CostGross Unrealized GainsGross Unrealized LossesFair Market Value
Maturity less than 1 year:
Certificate of deposit$5,943 $3 $— $5,946 
Corporate debt securities12,175 7 (28)12,154 
Commercial paper2,399 — — 2,399 
U.S. treasury securities12,707 — (83)12,624 
Total maturity less than 1 year33,224 10 (111)33,123 
Maturity 1 to 2 years:
Corporate debt securities1,690 5 — 1,695 
U.S. treasury securities— — — — 
Total maturity 1 to 2 years1,690 5 — 1,695 
Total short-term investments$34,914 $15 $(111)$34,818 


As of December 31, 2023
(in thousands)Amortized CostGross Unrealized GainsGross Unrealized LossesFair Market Value
Maturity less than 1 year:
Certificate of deposit$8,317 $16 $— $8,333 
Corporate debt securities10,948 8 (16)10,940 
Commercial paper6,193 9 — 6,202 
U.S. government agencies835 — (1)834 
U.S. treasury securities— — — — 
Total maturity less than 1 year26,293 33 (17)26,309 
Maturity 1 to 2 years:
Corporate debt securities8,437 6 (10)8,433 
U.S. treasury securities18,505 — (79)18,426 
Total maturity 1 to 2 years26,942 6 (89)26,859 
Total short-term investments$53,235 $39 $(106)$53,168 
Investments Available-for-sale in a Continuous Unrealized Loss Position
Investments available for sale that have been in a continuous unrealized loss position for greater than one-year consisted of the following:
As of June 30, 2024
(in thousands)Fair Market ValueGross Unrealized Loss
Corporate debt securities$4,333 $(19)
U.S. treasury securities9,794 (72)
Total$14,127 $(91)

As of December 31, 2023
(in thousands)Fair Market ValueGross Unrealized Loss
Corporate debt securities$397 $(3)
Schedule of Components of Property and Equipment
Property and equipment consisted of the following:
 
(in thousands)As of June 30,
2024		As of December 31,
2023
Furniture and office equipment$1,067 $1,067 
Leasehold improvements2,568 2,568 
Laboratory equipment1,414 1,355 
Property and equipment, gross
5,049 4,990 
Less—accumulated depreciation and amortization(3,954)(3,752)
Property and equipment, net$1,095 $1,238 
Schedule of Accrued Liabilities
Accrued liabilities consisted of the following:

(in thousands)As of June 30,
2024		As of December 31,
2023
Clinical trials$3,832 $4,309 
Accrued compensation1,790 2,737 
Research agreements and services867 530 
Other accrued liabilities223 207 
Total accrued liabilities$6,712 $7,783