| Document and Entity Information | Nov. 10, 2021 |
| Document And Entity Information [Line Items] | |
| Entity Registrant Name | Markforged Holding Corp |
| Amendment Flag | true |
| Entity Central Index Key | 0001816613 |
| Document Type | 8-K/A |
| Document Period End Date | Nov. 10, 2021 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-39453 |
| Entity Tax Identification Number | 98-1545859 |
| Entity Address, Address Line One | 480 Pleasant Street |
| Entity Address, City or Town | Watertown |
| Entity Address, State or Province | MA |
| Entity Address, Postal Zip Code | 02472 |
| City Area Code | (866) |
| Local Phone Number | 496-1805 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Amendment Description | On November 10, 2021, Markforged Holding Corporation (“Markforged”) issued a press release announcing its financial results for the third quarter ended September 30, 2021 and filed a Current Report on Form 8-K furnishing the press release as Exhibit 99.1. On November 15, 2021, Markforged issued a revised press release to correct the stock compensation expense for the three and nine month periods ending September 30, 2021 that was incorrectly published as $6.202 million and $9.176 million, respectively, to properly reflect $8.421 million and $11.395 million, respectively. As a result of the change in stock compensation expense, the net profit from operations should be $21.7 million in the third quarter of 2021 and $0.6 million for the nine month period ending September 30, 2021 (instead of $23.9 million and $2.8 million, respectively). Additionally, the basic weighted average shares outstanding for the three and nine month periods ending September 30, 2021 and 2020 should be (i) for the three and nine month periods ended September 30, 2021, 162,942,990 and 81,373,265, respectively (instead of 163,426,469 and 81,856,744, respectively), and (ii) for the three and nine month periods ended September 30, 2020, 38,545,607 and 38,149,992, respectively (instead of 38,778,614 and 38,382,999, respectively). The diluted weighted average shares outstanding for the three and nine month periods ending September 30, 2021 and 2020 should be (i) for the three and nine month periods ended September 30, 2021, 167,091,320 and 85,407,166, respectively (instead of 176,420,646 and 94,736,492, respectively), and (ii) for the three and nine month periods ended September 30, 2020, 38,545,607 and 38,149,992, respectively (instead of 38,778,614 and 38,382,999, respectively). Markforged is filing this Amendment No. 1 on Form 8-K/A to furnish the revised press release. Except as described above, all other information in the original press release remains unchanged. |
| Common Stock 0.0001 Par Value Per Share 2 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Common Stock, $0.0001 par value per share |
| Trading Symbol | MKFG |
| Security Exchange Name | NYSE |
| Redeemable Warrants Each Whole Warrant Exercisable For One Share Of Common Stock 0.0001 Par Value 1 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Redeemable Warrants, each whole warrant exercisable for one share of Common Stock, $0.0001 par value |
| Trading Symbol | MKFG.WS |
| Security Exchange Name | NYSE |
