Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Operating activities
Net loss	$ (9,725)	$ (97,335)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation expense	1,593	2,172
Stock-based compensation expense	14,554	14,802
Net accretion of discounts on marketable securities	(4,392)	(5,991)
Changes in operating assets and liabilities:
Unbilled accounts receivable	(1,559)	(308)
Prepaid expenses and other current assets	(1,365)	(1,072)
Operating lease assets and liabilities	(700)	(715)
Other assets	2,001	94
Accounts payable	(1,593)	(853)
Accrued expenses and other liabilities	(1,032)	(825)
Deferred revenue	0	(934)
Net cash used in operating activities	(2,218)	(90,965)
Investing activities
Purchases of marketable securities	(178,594)	(194,892)
Maturities of marketable securities	211,102	158,708
Purchases of property and equipment	(278)	(508)
Net cash provided by (used in) investing activities	32,230	(36,692)
Financing activities
Proceeds from issuance of common stock in connection with public offerings, net of issuance costs	0	117,345
Proceeds from issuance of common stock under benefit plans, net	2,746	777
Net cash provided by financing activities	2,746	118,122
Net increase (decrease) in cash, cash equivalents and restricted cash	32,758	(9,535)
Cash, cash equivalents, and restricted cash, beginning of period	26,655	36,190
Cash, cash equivalents, and restricted cash, end of period	59,413	26,655
Supplemental cash flow information
Cash paid for operating lease liabilities	2,782	3,333
Non-cash investing and financing activities:
Cash and cash equivalents	58,212	25,563
Restricted cash	1,201	1,092
Total cash, cash equivalents, and restricted cash	$ 59,413	$ 26,655