Commitments and Contingencies - Lease costs (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Commitments and Contingencies
Total lease costs	$ 1,000	$ 100	$ 1,300	$ 300
Weighted-average incremental borrowing rate used to determine right-of-use assets and lease liabilities	11.00%		11.00%
Impairment losses of ROU assets			$ 757		$ 0
Maximum
Commitments and Contingencies
Short-term operating lease costs	$ 100	$ 100	$ 100	$ 100

Amount of lease cost recognized by lessee for lease contract.

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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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Discount rate used by lessee to determine present value of operating lease payments.

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Amount of loss from impairment of right-of-use asset from operating lease.

+ References

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Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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