CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Cash flows from operating activities
Net loss		$ (98,722)	$ (99,636)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization		405	426
Amortization of debt issuance costs		2,278	1,659
Accretion of revenue interest financing debt, net of cash paid		2,784	4,421
Amortization of discount on short-term investments		(149)	(995)
Stock-based compensation expense		14,940	11,638
Amortization of net contract asset/liability		(1,018)	(1,259)
Noncash lease expense		112	146
Noncash lease liability		567	300
Write off of fixed assets			61
Write off of right-of-use assets	$ 0	757		$ 0
Changes in operating assets and liabilities:
Net contract asset/liability		1,581	2,079
Prepaid expenses and other current assets, non-current assets, inventory and accounts receivable		(1,174)	(6,290)
Accounts payable and accrued expenses		(10,116)	(3,559)
Net cash used in operating activities		(87,755)	(91,009)
Cash flows from investing activities
Proceeds from sale of property and equipment			9
Maturities of short-term investments		29,885	17,000
Purchases of short-term investments			(51,995)
Purchases of property and equipment		(1,152)	(85)
Net cash provided by (used in) investing activities		28,733	(35,071)
Cash flows from financing activities
Proceeds from exercise of stock options		257	783
Prepayments of long-term debt, including financing costs		(19,623)
Other cash flows from financing activities			(737)
Proceeds from equity offerings, net of offering costs			25,920
Net cash (used in) provided by financing activities		(19,366)	25,966
Net decrease in cash and cash equivalents		(78,388)	(100,114)
Cash and cash equivalents-beginning of period		120,572	240,551	240,551
Cash and cash equivalents-end of period	$ 42,184	42,184	140,437	$ 120,572
Supplemental disclosure of cash flow information
Unrealized gain (loss) on short-term investments		20	(71)
Financing costs			97
Property and equipment in accounts payable		221
Cash paid for interest during the period		$ 7,944	6,540
Cash paid for income taxes during the period			$ 903