Evolv Technologies Holdings, Inc. General form of registration statement for all companies including face-amount certificate companies

General form of registration statement for all companies including face-amount certificate companies

TRUST ACCOUNT AND FAIR VALUE MEASUREMENT (Details)

TRUST ACCOUNT AND FAIR VALUE MEASUREMENT (Details) - USD ($)	3 Months Ended	11 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Private Placement [Member]
Trust Account and Fair Value Measurement (Details) [Line Items]
Total deposit amount	$ 172,500,000	$ 172,500,000
US Treasury Securities [Member]
Trust Account and Fair Value Measurement (Details) [Line Items]
U.S. treasury bills maturity period, description	The proceeds in the Trust Account must be invested in either U.S. government treasury bills with a maturity of 180 days or less or in money market funds meeting certain conditions under Rule 2a-7 under the Investment Company Act of 1940, as amended, and that invest solely in U.S. government treasury obligations.	The proceeds in the Trust Account must be invested in either U.S. government treasury bills with a maturity of 180 days or less or in money market funds meeting certain conditions under Rule 2a-7 under the Investment Company Act of 1940, as amended, and that invest solely in U.S. government treasury obligations.
U.S. government treasury bills [Member]
Trust Account and Fair Value Measurement (Details) [Line Items]
Description for proceeds invested primarily	At March 31, 2021 the proceeds of the Trust Account were invested primarily in U.S. government treasury bills maturing in May 2021 yielding interest of less than 0.1% per year.	At December 31, 2020 the proceeds of the Trust Account were invested primarily in U.S. government treasury bills maturing in February 2021 yielding interest of approximately 0.1% per year.