Equity Instruments - Additional Information (Details)

v3.26.1

Equity Instruments - Additional Information (Details)									3 Months Ended	6 Months Ended
	May 15, 2026 USD ($) shares	Apr. 27, 2026 USD ($) $ / shares shares	Apr. 03, 2026 USD ($) $ / shares shares	Dec. 23, 2025 USD ($)	Dec. 22, 2025 $ / shares shares	Aug. 19, 2025 USD ($) $ / shares shares	Apr. 12, 2024 USD ($)	Sep. 29, 2021 Tranche shares	Jun. 30, 2026 USD ($) $ / shares shares	Jun. 30, 2026 USD ($) $ / shares shares	Jun. 29, 2026 $ / shares	Jun. 11, 2026 $ / shares shares	Mar. 31, 2026 shares	Dec. 31, 2025 USD ($) $ / shares shares	Jun. 27, 2025 $ / shares	Feb. 24, 2025 shares	Aug. 12, 2024 $ / shares shares	Aug. 11, 2024 $ / shares	Jul. 01, 2024 $ / shares shares	Apr. 10, 2024 USD ($) $ / shares shares	Dec. 29, 2023 $ / shares	Jul. 25, 2022 $ / shares	Dec. 02, 2020 $ / shares
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of Warrants (in shares)									36,892	36,892				36,892
Publicly traded price | $ / shares											$ 18.4
Value of shares sold, may offer and sell up to | $			$ 500,000,000
Common stock, shares authorized									500,000,000	500,000,000				500,000,000
Common stock, shares issued									32,149,118	32,149,118				24,607,630
Common stock, par value (in dollars per share) | $ / shares									$ 0.00001	$ 0.00001				$ 0.00001	$ 0.00001
Preferred stock, shares issued									10,000,000	10,000,000
Preferred stock, par value | $ / shares									$ 0.00001	$ 0.00001
Common stock, shares outstanding									32,149,118	32,149,118				24,607,630
Number of shares of common stock reserved for issuance (in shares)									6,782,891	6,782,891				191,062
Common Stock
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Common stock issued									2,246,823	2,246,823
ATM Sales Agreement
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Value of shares sold, may offer and sell up to | $	$ 100,000,000
Number of shares of common stock reserved for issuance (in shares)	5,000,000
2021 Equity Incentive Plan
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Recycling of shares												1,430,000
Common stock, par value (in dollars per share) | $ / shares			$ 0.00001
Number of shares of common stock reserved for issuance (in shares)			1,230,382
2021 Equity Incentive Plan | Common Stock
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of shares of common stock reserved for issuance (in shares)													244,377
Amendment to 2021 Equity Incentive Plan
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of shares of common stock reserved for issuance (in shares)												2,860,000
Amendment to 2021 Equity Incentive Plan | Common Stock
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Common stock, par value (in dollars per share) | $ / shares												$ 0.00001
Number of shares of common stock reserved for issuance (in shares)									10,000,000	10,000,000		2,860,000
2021 Employee Stock Purchase Plan
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Common stock, par value (in dollars per share) | $ / shares			$ 0.00001
Number of shares of common stock reserved for issuance (in shares)			246,076
April 2024 Securities Purchase Agreement
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Exercise Price per Warrant (in dollars per share) | $ / shares																				$ 183.75
Number of shares of common stock reserved for issuance (in shares)																				65,307
Class of Warrant or Right, Unissued																				65,307
Gross proceeds from Offering | $							$ 12,000,000
February 2025 Securities Purchase Agreement
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of Warrants (in shares)																990,159
Placement Agency Agreement
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Placement Agency Agreement, Cash Fee of Aggregate Purchase Price																				7.00%
Placement agency agreement, certain expenses, reimbursed amount | $																				$ 150,000
Placement Agency Agreement, Percent, Purchase Number of Shares of Common Stock Sold in Offering																				5.00%
Placement Agency Agreement, Shares, Purchase Number of Shares of Common Stock Sold in Offering																				3,266
Placement Agent Warrants, Exercise Price | $ / shares																				$ 202.125
Placement Agent Warrants, Percent, Offering Price Per Share																				110.00%
July 2024 Private Warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Exercise Price per Warrant (in dollars per share) | $ / shares																			$ 37.50
Warrants term																			5 years
Class of Warrant or Right, Unissued																			110,000
Eligible Velo3D Equityholders
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Earnout period								5 years
Number of tranches | Tranche								2
Eligible Velo3D Equityholders | JAWS Spitfire
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of shares that the holders may receive (in shares)								20,722
Eligible Velo3D Equityholders | Maximum | JAWS Spitfire
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of shares that the holders may receive (in shares)								41,444
Underwriting Agreement
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Common stock, par value (in dollars per share) | $ / shares						$ 0.00001
Gross proceeds from Offering | $						$ 17,800,000
Underwriting Agreement | Common Stock
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Sale of stock, shares issued						5,833,333
Sale of stock, price per share | $ / shares						$ 3
Underwriting Agreement | Maximum | Common Stock
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Sale of stock, additional number of shares issued						875,000
Private Placement
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Gross proceeds from issuance of common stock | $				$ 30,000,000
Stock issuance cost | $				$ 2,000,000
Private Placement | Common Stock
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Sale of stock, price per share | $ / shares					$ 8.25
Common stock, par value (in dollars per share) | $ / shares					$ 0.00001
Common stock issued					3,636,363
April 2026 Registered Direct Offering
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Gross proceeds from issuance of common stock | $		$ 50,000,000
Stock issuance cost | $		$ 3,400,000
April 2026 Registered Direct Offering | Common Stock
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Sale of stock, price per share | $ / shares		$ 14
Common stock issued		3,571,428
Common stock warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of Warrants (in shares)									36,892	36,892				36,892
Private Placement Warrants [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Exercise Price per Warrant (in dollars per share) | $ / shares																							$ 6,037.5
Public Warrants [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of Warrants (in shares)									16,429	16,429				16,429
Exercise Price per Warrant (in dollars per share) | $ / shares									$ 6,037.5	$ 6,037.5				$ 6,037.5
2022 Private Placement Warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of Warrants (in shares)									134	134				134
Exercise Price per Warrant (in dollars per share) | $ / shares									$ 1,344	$ 1,344				$ 1,344								$ 1,344
Warrants term									8 years 25 days	8 years 25 days				8 years 6 months 25 days
2023 Private Warrant A [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Exercise Price per Warrant (in dollars per share) | $ / shares																					$ 299.25
2023 Private Warrant B [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of Warrants (in shares)									3,429	3,429				3,429
Exercise Price per Warrant (in dollars per share) | $ / shares									$ 326.29	$ 326.29				$ 326.29							$ 326.29
2024 Private Warrants [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Exercise Price per Warrant (in dollars per share) | $ / shares									$ 199.35	$ 199.35
Class of Warrant or Right, Unissued									41,808	41,808
BEPO Warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of Warrants (in shares)									5,157	5,157				5,157
Exercise Price per Warrant (in dollars per share) | $ / shares									$ 183.75	$ 183.75				$ 183.75
Class of Warrant or Right, Unissued									65,307	65,307
BEPO Agent Warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of Warrants (in shares)									3,266	3,266				3,266
Exercise Price per Warrant (in dollars per share) | $ / shares									$ 202.125	$ 202.125				$ 202.13
Class of Warrant or Right, Unissued									3,266	3,266
Common Stock Warrants | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant liabilities | $									$ 100,000	$ 100,000				$ 100,000
Warrant Inducement Agreement [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of Warrants (in shares)																	49,524
Exercise Price per Warrant (in dollars per share) | $ / shares																	$ 34.2	$ 296.7
New Warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of Warrants (in shares)																	99,048
Exercise Price per Warrant (in dollars per share) | $ / shares																	$ 34.2
April 2024 Registered Warrants | Highbridge Holders and Anson Holders | February 2025 Securities Purchase Agreement
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of Warrants (in shares)																60,150
August 2024 Registered Warrants | Highbridge Holders and Anson Holders | February 2025 Securities Purchase Agreement
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of Warrants (in shares)																99,048
April and July 2024 Unregistered Warrants | High Trail Holders | February 2025 Securities Purchase Agreement
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of Warrants (in shares)																151,808
December 2023 Registered Warrants | High Trail Holders | February 2025 Securities Purchase Agreement
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of Warrants (in shares)																19,048