Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities:
Net loss	$ (17,180)	$ (37,017)
Adjustments to reconcile net loss to cash used in operating activities:
Change in fair value of royalty monetization liability	(29,028)	0
Unrealized gain on equity investment	(3,500)	(502)
Change in accrued interest and accretion of discount on marketable securities	(2,301)	(1,536)
Stock-based compensation expense	5,016	5,496
Depreciation and amortization expense	453	428
Non-cash operating lease expense	815	767
Change in lease liability	(926)	(238)
Change in operating assets and liabilities:
Prepaid expenses and other current assets	649	(2,262)
Security deposit	0	12
Accounts payable	(993)	(736)
Accrued expenses	1,047	1,718
Net cash used in operating activities	(45,948)	(33,870)
Cash flows from investing activities:
Purchase of marketable securities	(56,533)	(53,928)
Sales/maturities of marketable securities	90,000	110,000
Purchase of long-term equity investment	0	(10,000)
Purchases of property and equipment	(49)	(27)
Software development and other costs	(116)	(110)
Net cash provided by investing activities	33,302	45,935
Cash flows from financing activities:
Proceeds from exercise of options and purchases from employee stock purchase plan	622	502
Net cash provided by financing activities	622	502
Net (decrease) increase in cash, cash equivalents and restricted cash	(12,024)	12,568
Cash, cash equivalents and restricted cash, at beginning of period	28,972	46,799
Cash, cash equivalents and restricted cash, at end of period	$ 16,948	$ 59,367