Commitments and Contingencies (Details) $ in Thousands, € in Millions					1 Months Ended		6 Months Ended	7 Months Ended	12 Months Ended
	Sep. 26, 2023 USD ($)	Jul. 28, 2023 USD ($)	Jul. 28, 2023 EUR (€)	May 31, 2022 stockholder	Feb. 29, 2024 USD ($)	Jan. 14, 2022 lawsuit	Jun. 30, 2024 USD ($)	Aug. 22, 2022 stockholder	Dec. 31, 2022 lawsuit	Dec. 31, 2023 USD ($)	Nov. 15, 2021 lawsuit
Loss Contingencies [Line Items]
Number of class action lawsuits | lawsuit											3
Number of shareholder lawsuits | lawsuit						3
Number of stockholders, demand for books and records | stockholder								4
Number of stockholders, not filing complaint | stockholder				1
SEC civil penalty	$ 25,000
Payment for legal settlements within 30 days of settlement	8,500
Payments for legal settlements due by 12/31/2024	8,500
Payment for legal settlements within 730 days of settlement	8,000
Accrued contract termination costs							$ 1,204			$ 470
Accrued SEC settlement							8,174			8,000
SEC settlement accrued										$ 17,000
Estimated civil penalty	$ 25,000
Hyzon Europe
Loss Contingencies [Line Items]
Estimated civil penalty		$ 1,100
China
Loss Contingencies [Line Items]
Settlement payments received on past due receivables					$ 1,100
Number of customers | lawsuit									2
Worthington Industries Poland SP Z.O.O. Litigation
Loss Contingencies [Line Items]
Damages sought		$ 4,900	€ 4.6
SEC Investigation
Loss Contingencies [Line Items]
SEC civil penalty							16,900
SEC Investigation | Accrued Liabilities
Loss Contingencies [Line Items]
SEC civil penalty							8,700
SEC Investigation | Other Noncurrent Liabilities
Loss Contingencies [Line Items]
SEC civil penalty							$ 8,200