Fair value measurements (Details) - USD ($) |
Jun. 30, 2024 |
Dec. 31, 2023 |
---|---|---|
Marketable securities: | ||
Available-for-sale securities, Debt Securities, Current, Total | $ 2,979,000 | $ 2,947,000 |
Recurring basis | ||
Marketable securities: | ||
Available-for-sale securities, Debt Securities, Current, Total | 2,979,000 | |
Recurring basis | Corporate debt securities | ||
Marketable securities: | ||
Available-for-sale securities, Debt Securities, Current, Total | 2,979,000 | |
Recurring basis | Level 1 | ||
Marketable securities: | ||
Available-for-sale securities, Debt Securities, Current, Total | 2,979,000 | |
Recurring basis | Level 1 | Corporate debt securities | ||
Marketable securities: | ||
Available-for-sale securities, Debt Securities, Current, Total | $ 2,979,000 |