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Subsequent events (Details) - shares	Oct. 31, 2024	Oct. 30, 2024	Sep. 30, 2024	Aug. 26, 2024	Aug. 25, 2024	Dec. 31, 2023
Subsequent events
Number of authorized shares of common stock			14,000,000	14,000,000	350,000,000	14,000,000
Subsequent events
Subsequent events
Number of authorized shares of common stock	350,000,000
Subsequent events | 2020 Stock Plan | Employees
Subsequent events
Common stock (in shares)	2,500,000	280,000
Subsequent events | 2020 Stock Plan | Non-employee
Subsequent events
Common stock (in shares)		250,000

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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- Definition

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