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Fair Value Measurements - Changes in the fair value of the financial liabilities (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($)
Warrants | Common Stock Private Warrants
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 0
Initial recognition upon merger consummation	6,017
Change in fair value during the period	(5,877)
Ending Balance	140
Warrants | Common Stock Public Warrants
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	0
Initial recognition upon merger consummation	11,875
Change in fair value during the period	(4,519)
Ending Balance	7,356
Warrants | Legacy Xos Preferred Stock Warrant
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	1,707
Release due to warrant exercise	(3,136)
Change in fair value during the period	1,429
Ending Balance	0
Contingent Earn-out Shares Liability
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	0
Initial recognition upon merger consummation	101,744
Change in fair value during the period	(72,504)
Ending Balance	29,240
Derivative Liability on Convertible Notes
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	6,394
Release due to extinguishment of convertible notes	(6,394)
Ending Balance	$ 0

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- Definition

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- Definition

Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

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- Definition

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- Definition

Financial Liabilities, Gain (Loss) On Extinguishment Of Convertible Debt

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- Definition

Financial Liabilities, Reverse Recapitalization

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Financial Liabilities, Warrants Exercises

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