Amazon Warrant (Details) - Velodyne $ / shares in Units, $ in Millions	3 Months Ended
Mar. 31, 2025 shares	Feb. 10, 2023 USD ($) year $ / shares shares
Amazon Warrant \| Expected Term \| Valuation Technique, Option Pricing Model
Class of Warrant or Right [Line Items]
Warrants, fair value measurement inputs \| year		6.98
Amazon Warrant \| Price Volatility \| Valuation Technique, Option Pricing Model
Class of Warrant or Right [Line Items]
Warrants, fair value measurement inputs		0.537
Amazon Warrant \| Risk Free Interest Rate \| Valuation Technique, Option Pricing Model
Class of Warrant or Right [Line Items]
Warrants, fair value measurement inputs		0.0386
Amazon Warrant \| Expected dividend rate \| Valuation Technique, Option Pricing Model
Class of Warrant or Right [Line Items]
Warrants, fair value measurement inputs		0
Amazoncom NV Investment Holdings LLLC \| Amazon Warrant
Class of Warrant or Right [Line Items]
Warrants issued, number of preferred stock callable (in shares)	3,267,890	3,263,898
Warrants issued, exercise price (in dollars per share) \| $ / shares		$ 50.71
Class of warrant or right, vesting payments to be received \| $		$ 100.0
Warrants vested during period (in shares)	28,400
Amazoncom NV Investment Holdings LLLC \| Amazon Warrant, Common Stock Unvested
Class of Warrant or Right [Line Items]
Number of warrants vested (in shares)	2,188,704

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Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
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-Name Accounting Standards Codification
-Section 50
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Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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