Balance Sheet Components - Schedule of Components of Balance Sheet (Parenthetical) (Details) € in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2024 USD ($) Customer	Dec. 31, 2023 Customer	Jul. 31, 2024 EUR (€)	Jun. 30, 2024 EUR (€) Customer	May 15, 2024 EUR (€)
Balance Sheet Related Disclosures [Line Items]
Bridge loan | €			€ 1.0	€ 11.5
Bridge loan receivable	$ 12,823,000
Bridge loan
Balance Sheet Related Disclosures [Line Items]
Amortized costs	12,800,000
Accrued interest	100,000
Deferred loan origination costs	400,000
Principal balance	$ 12,300,000
Loans bears interest rate	15.00%			15.00%
Credit allowance	$ 0
Maximum
Balance Sheet Related Disclosures [Line Items]
Bridge loan | €					€ 30.0
Accounts Receivable | Credit Concentration Risk
Balance Sheet Related Disclosures [Line Items]
Number of customers | Customer	2	2		2
Accounts Receivable | Customer One | Credit Concentration Risk
Balance Sheet Related Disclosures [Line Items]
Percentage of accounts receivable	42.00%	42.90%
Accounts Receivable | Customer Two | Credit Concentration Risk
Balance Sheet Related Disclosures [Line Items]
Percentage of accounts receivable	13.50%	18.50%