Condensed Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities
Net loss	$ (67,354)	$ (58,298)
Adjustments to reconcile net loss to net cash used in operating activities
Stock-based compensation expense	12,048	9,190
Vesting of common stock warrant in return for services	44	44
Change in fair value of derivative liability	13	0
Depreciation and amortization	2,367	2,108
Amortization of right-of-use assets	851	732
Net amortization (accretion) of premium (discount) on marketable securities	(3,092)	(615)
Changes in operating assets and liabilities
Prepaid expenses and other current assets	(2,330)	(475)
Other assets	(1,636)	0
Accounts payable	(83)	614
Accrued and other liabilities	785	(2,239)
Deferred revenue	72	(538)
Operating lease liabilities	(1,016)	(494)
Net cash used in operating activities	(59,331)	(49,971)
Cash flows from investing activities
Purchase of marketable securities	(374,084)	(20,156)
Maturities of marketable securities	38,346	114,391
Acquisition of property and equipment	(1,059)	(1,817)
Net cash provided by (used in) investing activities	(336,797)	92,418
Cash flows from financing activities
Issuance of Common Stock upon Exercise of Stock Options and Warrants	3,963	2,029
Issuance of common stock - 2020 ESPP	707	658
Net cash provided by financing activities	336,081	141,513
Net increase (decrease) in cash and cash equivalents	(60,047)	183,960
Cash and cash equivalents, beginning of period	249,108	52,351
Cash and cash equivalents, end of period	189,061	236,311
Supplemental disclosures of noncash investing and financing information
Unpaid offering costs	0	183
Purchases of property and equipment in accounts payable and accrued and other liabilities	177	312
Public offering
Cash flows from financing activities
Issuance of common stock for the offering program, net of issuance costs	316,148	129,720
Payments Of Stock Issuance Costs	0	(329)
ATM Offering Program
Cash flows from financing activities
Issuance of common stock for the offering program, net of issuance costs	15,263	9,647
Payments Of Stock Issuance Costs	$ 0	$ (212)