Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Mar. 10, 2021
Jun. 30, 2020
Document Information [Line Items]      
Document Type 10-K/A    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2020    
Entity File Number 001-38835    
Entity Registrant Name DESKTOP METAL, INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 83-2044042    
Entity Address, Address Line One 63 3rd Avenue    
Entity Address, City or Town Burlington    
Entity Address, State or Province MA    
Entity Address, Postal Zip Code 01803    
City Area Code 978    
Local Phone Number 224-1244    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   244,448,748  
Entity Public Float     $ 95,050
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001754820    
Amendment Flag true    
Amendment Description EXPLANATORY NOTE This Amendment No. 2 to the Annual Report on Form 10-K/A (this "Amendment") amends the Annual Report on Form 10-K of Desktop Metal, Inc. (the "Company"), for the year ended December 31, 2020, originally filed with the U.S. Securities and Exchange Commission ("SEC") on March 15, 2021, and amended on April 30, 2021 to provide the information required by Items 10 through 14 of Part III of the Annual Report on Form 10-K (as amended, the "Original Filing"). On May 14, 2021, the Company filed a Current Report on Form 8-K with the SEC disclosing the determination by the audit committee of the board of directors. On April 12, 2021, the staff of the Securities and Exchange Commission (the "SEC Staff") issued a public statement entitled "Staff Statement on Accounting and Reporting Considerations for Warrants issued by Special Purpose Acquisition Companies ("SPACs")" (the "SEC Statement"). In the SEC Staff Statement, the SEC Staff expressed its view that certain terms and conditions common to SPAC warrants may require the warrants to be classified as liabilities on the SPAC's balance sheet as opposed to being treated as equity. Since the consummation of the business combination with Trine Acquisition Corp. on December 9, 2020, our outstanding warrants to purchase common stock were accounted for as equity within our balance sheet. As a result of the Staff Statement, the Company reevaluated the accounting treatment of the warrants assumed in the business combination with Trine on December 9, 2020 which were recorded in equity in the Company's consolidated balance sheet. The Company concluded that the exercise and settlement features of the private placement warrants may change with a change in the holder, which precludes the private placement warrants from being considered indexed to the Company's own stock and therefore, precludes the private placement warrants from meeting the scope exception from derivative accounting prescribed by Accounting Standards Codification 815, Derivatives and Hedging ("ASC 815"). As such, the private placement warrants do not meet the conditions to be classified within equity under the Statement and should be presented as a liability. The Company has concluded that the private placement warrants are to be classified as a liability measured at fair value on the Company's consolidated balance sheet at December 31, 2020, with subsequent changes in fair value from the date of acquisition on December 9, 2020 through December 31, 2020, as well as subsequent changes in fair value reported in our statement of operations each reporting period. The change in accounting for the private placement warrants did not have any impact on the Company's liquidity, cash flows, revenues, or operating expenses within its consolidated financial statements. As disclosed in Item 9A, as of December 31, 2020, Management has determined that the Company did not maintain effective internal control over financial reporting due to the existence of material weaknesses. Management also concluded that the Company's disclosure controls and procedures were not effective as of December 31, 2020 due to the existence of material weaknesses. We are filing this Amendment to amend and restate the Original Filing as necessary to reflect the restatements required to classify the private placement warrants as a liability rather than equity. The following items have been amended to reflect the restatements: Part I, Item 1A. Risk Factors Part II, Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations Part II, Item 8. Financial Statements and Supplementary Data Part II, Item 9A. Controls and Procedures. In addition, the Company's Chief Executive Officer and Chief Financial Officer have provided new certifications dated as of the date of this (Exhibits 31.1, 31.2, 32.1 and 32.2).    
Entity Ex Transition Period false    
ICFR Auditor Attestation Flag false    
Common Stock      
Document Information [Line Items]      
Title of 12(b) Security Common Stock, $0.0001 Par Value per Share    
Trading Symbol DM    
Security Exchange Name NYSE    
Debentures 6.55% Due 2030      
Document Information [Line Items]      
Title of 12(b) Security Warrants to purchase common stock    
Trading Symbol DM.WS    
Security Exchange Name NYSE