Summary of Significant Accounting Policies - Cost of revenue (Details) - Evolv Technologies Holdings Inc [Member] - USD ($) $ in Millions |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Product Warranty Liability [Line Items] | ||
| Warranty accrual | $ 0.1 | $ 0.1 |
| Maximum | ||
| Product Warranty Liability [Line Items] | ||
| Warranty accrual | $ 0.1 | $ 0.1 |
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- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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