Velo3D, Inc. Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Changes in Fair Value of Level 3 Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value	$ 32,985	$ 26,852	$ 57,227	$ 13,872	$ 18,411	$ 118,874
Change in fair value	6,133	8,441	43,355	(105,002)
Warrant liabilities \| Private placement warrant liabilities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value	934	1,488	3,605	1,380	888	7,387
Change in fair value	(554)	600	2,225	(6,007)
Warrant liabilities \| 2022 Private Warrant
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value	99	140	245	0	109	0
Change in fair value	(41)	31	245	0
Contingent earnout liabilities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value	14,414	25,224	53,377	12,492	17,414	$ 111,487
Change in fair value	(10,810)	7,810	$ 40,885	$ (98,995)
Debt derivatives
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value	17,538	0			$ 0
Change in fair value	$ 17,538	$ 0