Organization and Summary of Significant Accounting Policies - Narrative (Details) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended
	Sep. 14, 2023 USD ($) $ / shares shares	Sep. 07, 2023	Sep. 30, 2023 USD ($) position shares	Sep. 30, 2022 shares	Sep. 30, 2023 USD ($) position segment shares	Sep. 30, 2022 shares	Dec. 31, 2022 USD ($) position
Description Of Business And Basis Of Presentation [Line Items]
Reverse stock split ratio		0.1945
Accumulated deficit			$ 180,127		$ 180,127		$ 130,116
Cash, cash equivalents and investment securities			540,200		540,200
Interest receivables			$ 700		$ 700		$ 500
Number of companies | position			47		47		29
Fair market value			$ 232,800		$ 232,800		$ 101,600
Unrealized loss position			$ 400		$ 400		$ 600
Number of companies in loss position for greater than 12 months | position			0		0		8
Fair market value with continuous loss position for more than 12 months							$ 34,300
Gross unrealized loss position with continuous loss position for more than 12 months							500
Deferred offering costs			$ 0		$ 0		$ 0
Number of operating segments | segment					1
Weighted-average unvested shares | shares			1,275,436	1,230,860	1,143,588	1,440,400
IPO
Description Of Business And Basis Of Presentation [Line Items]
Sale of stock (in shares) | shares	18,706,240
Offering price (in dollars per share) | $ / shares	$ 18.00
Proceeds from initial public offering	$ 310,400
Conversion of convertible preferred stock into common stock (in shares) | shares	35,616,773
Over-Allotment Option
Description Of Business And Basis Of Presentation [Line Items]
Sale of stock (in shares) | shares	2,591,640