Debt - Total amount of interest cost (Details) - Senior Secured Convertible Notes - RTW Investments, LP - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Debt Instruments
Contractual interest expense	$ 858	$ 808	$ 2,536	$ 2,389
Amortization of debt discount	24	20	68	59
Amortization of debt issuance costs	85	75	249	214
Total interest expense	$ 967	$ 903	$ 2,853	$ 2,662

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

Milestone Pharmaceuticals Inc. 10-Q