CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities:
Net loss	$ (48,025)	$ (42,573)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	2,108	2,448
Non-cash lease expense	1,279	1,190
Accretion on marketable securities	(4,263)	(4,323)
Loss on disposal of fixed assets	15	0
Write-down of inventory	997	1,567
Change in fair value of warrant liabilities	(2,407)	(796)
Stock-based compensation	5,258	4,071
Other	0	22
Changes in operating assets and liabilities:
Accounts receivable, net	416	(230)
Legal settlement insurance receivable	(4,638)	0
Inventory	(766)	(1,748)
Prepaid expenses and other current assets	186	886
Accounts payable	46	(105)
Accrued expenses and other current liabilities	(2,777)	(518)
Accrued legal settlement liability	8,000	0
Other long-term liabilities	26	(1,656)
Operating lease liabilities	(1,806)	4
Net cash used in operating activities	(46,351)	(41,761)
Cash flows from investing activities:
Purchases of property and equipment	(1,634)	(2,173)
Internally developed software - capitalized costs	0	(59)
Purchases of marketable securities	(191,605)	(208,788)
Sales and maturities of marketable securities	164,100	178,400
Net cash used in investing activities	(29,139)	(32,620)
Cash flows from financing activities:
Proceeds from exercise of stock options	1,641	136
Proceeds from issuance of common stock from direct equity offering, net of fees and issuance costs	46,774	0
Deferred offering costs	0	(70)
Refund of issuance costs	0	14
Net cash provided by financing activities	48,415	80
Effect of exchange rate changes on cash and cash equivalents	22	(7)
Net decrease in cash and cash equivalents	(27,053)	(74,308)
Cash and cash equivalents at beginning of period	49,241	133,860
Cash and cash equivalents at end of period	22,188	59,552
Supplemental disclosure of cash flow information:
Cash paid for income taxes	0	108
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Property and equipment purchased but not paid	440	280
Deferred offering costs payable	$ 0	$ 75