CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities:
Net loss	$ (35,513)	$ (86,990)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	664	635
Stock-based compensation expense	7,996	19,276
Revaluation of contingent consideration	3,800	(600)
Changes in operating assets and liabilities:
Accounts receivable	(45)	138
Prepaid expenses and other assets	3,744	(9,293)
Accounts payable	(1,216)	(1,079)
Accrued expenses and other liabilities	(15,514)	6,349
Deferred income	24,947
Net cash used in operating activities	(11,137)	(71,564)
Cash flows from investing activities:
Purchases of property and equipment, net	(121)	(868)
Purchases of marketable securities	(49,555)	(135,675)
Proceeds from sales and maturities of marketable securities	68,630	175,213
Net cash provided by investing activities	18,954	38,670
Cash flows from financing activities:
Proceeds from issuance of common stock under the at-the-market sales agreement, net of issuance costs		26,714
Payments of employee withholding taxes related to restricted stock unit award vesting	(76)	(102)
Proceeds from exercise of employee stock options and the issuance of stock	32	45
Net cash (used in) provided by financing activities	(44)	26,657
Net increase (decrease) in cash and cash equivalents	7,773	(6,237)
Cash and cash equivalents at beginning of period	39,878	45,277
Cash and cash equivalents at end of period	$ 47,651	39,040
Supplemental disclosure of non-cash investing and financing activities:
Additions to property and equipment included in accounts payable		$ 376