Related Party Transactions (Details) - USD ($) |
1 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Jun. 30, 2021 |
Aug. 31, 2020 |
Jun. 30, 2021 |
Dec. 31, 2020 |
Feb. 29, 2020 |
|
| Nonrecourse Promissory Note with Officer | |||||
| Related Party Transaction [Line Items] | |||||
| Accrued interest | $ 0 | ||||
| Evolv Technologies Holdings, Inc. | |||||
| Related Party Transaction [Line Items] | |||||
| Number of shares on exercise of options | 5,523,538 | 3,236,374 | |||
| Exercise price of stock option | $ 0.12 | $ 0.14 | |||
| Evolv Technologies Holdings, Inc. | Nonrecourse Promissory Note with Officer | |||||
| Related Party Transaction [Line Items] | |||||
| Promissory note | $ 400,000 | $ 400,000 | |||
| Number of shares on exercise of options | 3,888,889 | ||||
| Exercise price of stock option | $ 0.09 | ||||
| Accrued interest | $ 0 | ||||
| X | ||||||||||
- Definition Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The cash inflow from a long-term borrowing made from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Proceeds from Advances from Affiliates. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- 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.
|
| X | ||||||||||
- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. No definition available.
|
| X | ||||||||||
- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|