Basic and Diluted Net Loss per Share - Potentially Dilutive Securities Excluded from Computation (Details) - shares	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive common share equivalents (in shares)	1,071,553	271,198
Eligible Velo3D Equityholders
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive common share equivalents (in shares)	41,444	41,444
Common stock warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive common share equivalents (in shares)	36,892	215,134
Common stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive common share equivalents (in shares)	4,247	38,028
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive common share equivalents (in shares)	1,030,414	18,036

Velo3D, Inc. 10-K