Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Operating activities
Net (loss) income			$ (34,951)	$ 28,539
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation expense	$ 300	$ 400	697	855
Stock-based compensation expense	2,875	4,344	6,042	8,260
Net accretion of discounts on marketable securities			(1,984)	(2,295)
Changes in operating assets and liabilities:
Unbilled accounts receivable			2,096	(1,796)
Prepaid expenses and other current assets			1,544	1,266
Operating lease assets and liabilities			(353)	(350)
Other assets			(2)	22
Accounts payable			587	807
Accrued expenses and other liabilities			(2,753)	(1,693)
Net cash (used in) provided by operating activities			(29,077)	33,615
Investing activities
Purchases of marketable securities			(136,790)	(119,054)
Maturities of marketable securities			150,011	144,702
Purchases of property and equipment			(65)	(28)
Net cash provided by investing activities			13,156	25,620
Financing activities
Proceeds from issuance of common stock under benefit plans, net			301	2,028
Net cash provided by financing activities			301	2,028
Net (decrease) increase in cash, cash equivalents and restricted cash			(15,620)	61,263
Cash, cash equivalents, and restricted cash, beginning of period			59,413	26,655
Cash, cash equivalents, and restricted cash, end of period	43,793	87,918	43,793	87,918
Supplemental cash flow information
Cash paid for operating lease liabilities			1,306	1,478
Non-cash investing and financing activities:
Property and equipment purchases unpaid at end of period			0	19
Cash and cash equivalents	42,588	86,702	42,588	86,702
Restricted cash	1,205	1,216	1,205	1,216
Total cash, cash equivalents, and restricted cash	$ 43,793	$ 87,918	$ 43,793	$ 87,918