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	$ (34,342)	$ (29,079)
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation and amortization	449	538
Share-based compensation	6,322	4,520
Amortization of premium and discount on marketable securities	(1,381)	(2,414)
ROU asset amortization	945	884
Increase (Decrease) in Operating Capital [Abstract]
Prepaid expenses and other current assets	4,318	(5,301)
Accounts payable	(3,130)	(1,076)
Accrued expenses	402	(6,046)
Operating lease liability	(640)	(892)
Net cash used in operating activities	(35,693)	(28,264)
Cash flows from investing activities:
Purchases of marketable securities	(78,297)	(110,339)
Proceeds from sale or maturities of marketable securities	109,743	131,011
Purchases of property and equipment	(44)	(21)
Net cash provided by investing activities	31,402	20,651
Net Cash Provided by (Used in) Financing Activities [Abstract]
Proceeds from issuance of common stock	(18,113)	(3,126)
Issuance costs from issuance of common stock	(545)	(95)
Taxes paid related to net shares settlement of RSUs	(136)	0
Proceeds from exercise of stock options	0	62
Net cash provided by financing activities	17,432	3,093
Net change in cash, cash equivalents and restricted cash	13,141	(4,520)
Cash, cash equivalents and restricted cash at beginning of period	24,228	34,946
Cash, cash equivalents and restricted cash at end of period	37,369	30,426
Supplemental Cash Flow Information [Abstract]
Unrealized loss (gain) on marketable securities	$ (449)	$ 128