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Loans Payable - Additional Information (Details) € in Thousands	Jan. 17, 2025 USD ($)	Sep. 30, 2025 USD ($)	Jan. 17, 2025 EUR (€)	Sep. 30, 2024 USD ($)	Sep. 30, 2024 EUR (€)
Loans Payable
Restricted cash relating to RETOS loan		$ 46,000		$ 103,000
Government assistance, award amount				$ 2,540,000	€ 2,280
Minimum
Loans Payable
Loans acquired, interest rate		0.00%
Maximum
Loans Payable
Loans acquired, interest rate		1.00%
Unsecured loan
Loans Payable
Unsecured loan amount	$ 1,400,000		€ 1,300
Interest rate	4.015%		4.015%
Repayment term	7 years

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