Quarterly report pursuant to Section 13 or 15(d)

Description of Business and Basis of Presentation - Narrative (Details)

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Description of Business and Basis of Presentation - Narrative (Details)
1 Months Ended 6 Months Ended
Jul. 08, 2024
USD ($)
Jul. 05, 2024
USD ($)
Jun. 10, 2024
$ / shares
Jun. 28, 2024
USD ($)
Jun. 30, 2024
USD ($)
$ / shares
Aug. 02, 2024
USD ($)
Mar. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
$ / shares
Jun. 30, 2023
USD ($)
Mar. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                      
Accumulated deficit         $ 385,523,000     $ 357,037,000      
Cash and short-term investments         3,200,000            
Accounts payable         14,008,000     15,854,000      
Accounts receivable, net         $ 8,338,000     $ 9,583,000      
Common stock, par value (in dollars per share) | $ / shares     $ 0.00001   $ 0.00001     $ 0.00001      
Reverse Stock Split     1-for-5 and 1-for-50, with the exact ratio to be set within that range by the Company’s board of directors (the “Board”). On June 10, 2024, the Board approved the reverse stock split at a ratio of 1-for-35 (the “Reverse Stock Split”). On June 12, 2024, the Company filed a Certificate of Amendment (the “Certificate of Amendment”) to the Company's Certificate of Incorporation with the Secretary of State of the State of Delaware to effect the Reverse Stock Split, effective as of June 13, 2024.As a result of the Reverse Stock Split, every 35 shares of the Company's common stock were automatically reclassified and converted into one issued and outstanding share of common stock.                
Reverse stock split ratio     0.0285                
Minimum closing bid price of consecutive trading days       $ 1              
Stockholders' equity         $ 52,119,000   $ 45,450,000 $ 68,340,000 $ 108,417,000 $ 119,762,000 $ 138,795,000
Subsequent Event                      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                      
Cash and short-term investments           $ 1,100,000          
Accounts payable           17,500,000          
Accounts receivable, net           $ 8,700,000          
Stockholders' equity $ 50,000,000                    
Average market capitalization $ 50,000,000 $ 36,600,000                  
Number of consecutive trading days 30 days 30 days                  
Velo3D                      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                      
Exchange ratio         0.8149%