XML 19 R1.htm IDEA: XBRL DOCUMENT v3.22.1
Cover Page - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Mar. 25, 2022
Jun. 30, 2021
Document Information [Line Items]      
Entity Registrant Name Greenidge Generation Holdings Inc.    
Document Type 10-K    
Amendment Flag false    
Document Annual Report true    
Document Period End Date Dec. 31, 2021    
Current Fiscal Year End Date --12-31    
Entity Central Index Key 0001844971    
Document Transition Report false    
Entity File Number 001-40808    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 86-1746728    
Entity Address, Address Line One 135 Rennell Drive    
Entity Address, City or Town 3rd FloorFairfield    
Entity Address, State or Province CT    
Entity Address, Postal Zip Code 06890    
City Area Code 315    
Local Phone Number 536-2359    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers Yes    
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    
ICFR Auditor Attestation Flag false    
Entity Shell Company false    
Entity Public Float     $ 0
Entity Ex Transition Period false    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Documents Incorporated by Reference

None.

    
Auditor Name Armanino LLP    
Auditor Location San Ramon, CA, USA    
Auditor Firm ID 32    
Common Class A [Member]      
Document Information [Line Items]      
Title of 12(b) Security Class A Common Stock, $0.0001 par value    
Trading Symbol GREE    
Security Exchange Name NASDAQ    
Entity Common Stock, Shares Outstanding   12,836,565  
Common Class B [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   28,526,372  
8.50% Senior Notes due 2026 [Member]      
Document Information [Line Items]      
Title of 12(b) Security 8.50% Senior Notes due 2026    
Trading Symbol GREEL    
Security Exchange Name NASDAQ