Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
3 Months Ended
Mar. 31, 2021
May 10, 2021
Cover [Abstract]    
Entity Central Index Key 0001507605  
Document Type 10-Q/A  
Document Period End Date Mar. 31, 2021  
Amendment Flag true  
Amendment Description This Amendment No. 1 on Form 10-Q/A-1 amends Marathon Digital Holdings, Inc. ("the Company") Quarterly Report on Form 10-Q ("the Original Form 10-Q') for the quarter ended March 31, 2021, which was previously filed with the U.S. Securities Exchange Commission ("SEC") on May 10, 2021. The Original Form 10-Q was filed on May 10, 2021 at 5:30 PM EST (SEC ACCESSION NUMBER: 0001493152-21-010910). Due to technical issues at the time of filing, the Form 10-Q was accepted without Exhibit 101 in accordance with Rule 405 of Regulation S-T and Officer Certifications exhibits. The purpose of this Amendment No.1 is to furnish Exhibit 101.  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business Flag true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   99,472,029
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2021