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Notes payable, net - Narrative (Details) - LSA - USD ($)		3 Months Ended	6 Months Ended
	Aug. 08, 2025	Jun. 30, 2026	Jun. 30, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Volume-weighted average price per share period	10 days
Warrant exercisable, percentage of drawn down debt amount	3.00%
Warrant term	10 years
Debt Instrument, Tranche One | Common stock
Debt Instrument [Line Items]
Number of securities called by warrants (in shares)	179,104
Exercise price of warrants (in dollars per share)	$ 3.35
Secured Debt
Debt Instrument [Line Items]
Aggregate principal amount of debt	$ 45,000,000.0
Drawn amount of debt	20,000,000.0
Aggregate amount of debt available to be draft if certain commercial and operational milestones are met	20,000,000.0
Additional amount of debt available to be draft at the lenders' sole discretion	$ 5,000,000.0
Required commitment fee	1.00%
Termination fees, percentage of debt amount drawn down	4.00%
Stated interest rate	11.50%	11.00%	11.00%
Interest only period	60 months
Outstanding debt		$ 20,000,000	$ 20,000,000	$ 20,000,000
Unamortized debt issuance costs		731,000	731,000	$ 807,000
Interest expense		600,000	1,300,000
Amortization of debt issuance costs (less than)		100,000	100,000
End of term fee		$ 800,000	$ 800,000
Secured Debt | Debt Instrument, Tranche Two
Debt Instrument [Line Items]
Aggregate amount of debt available to be draft if certain commercial and operational milestones are met	$ 10,000,000.0
Interest only period	6 months
Debt prepayment premium percentage	2.00%
Secured Debt | Debt Instrument, Tranche Three
Debt Instrument [Line Items]
Aggregate amount of debt available to be draft if certain commercial and operational milestones are met	$ 10,000,000.0
Interest only period	6 months
Debt prepayment premium percentage	1.00%
Secured Debt | Debt Instrument, Tranche One
Debt Instrument [Line Items]
Variable interest rate	4.00%
Stated interest rate	11.00%
Interest only period	36 months
Debt prepayment premium percentage	3.00%

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