| Cover - USD ($) | 12 Months Ended | ||
| Dec. 31, 2023 | Apr. 05, 2024 | Jun. 30, 2023 | |
| Document Type | 10-K/A | ||
| Amendment Flag | true | ||
| Amendment Description | This Amendment No. 1 on Form 10-K/A (this “Amendment”) amends the Annual Report on Form 10-K of Greenidge Generation Holdings Inc. (the “Company,” “we,” “us,” or “our”) for the year ended December 31, 2023 (the “Original Form 10-K”) filed with the Securities and Exchange Commission (the “SEC”) on April 10, 2024. This Amendment is being filed solely to provide additional information in the "Revenue" section of "Item 7. Management’s Discussion and Analysis of Financial Conditions and Results of Operations" in response to a comment received by a letter, dated April 26, 2024, from the staff of the SEC concerning the Company’s mining equipment and the Company’s average cost to mine each bitcoin for the year ended December 31, 2023. | ||
| Document Annual Report | true | ||
| Document Transition Report | false | ||
| Document Period End Date | Dec. 31, 2023 | ||
| Document Fiscal Period Focus | FY | ||
| Document Fiscal Year Focus | 2023 | ||
| Current Fiscal Year End Date | --12-31 | ||
| Entity File Number | 001-40808 | ||
| Entity Registrant Name | Greenidge Generation Holdings Inc. | ||
| Entity Central Index Key | 0001844971 | ||
| Entity Tax Identification Number | 86-1746728 | ||
| Entity Incorporation, State or Country Code | DE | ||
| Entity Address, Address Line One | 590 Plant Road | ||
| Entity Address, City or Town | Dresden | ||
| Entity Address, State or Province | NY | ||
| Entity Address, Postal Zip Code | 14441 | ||
| City Area Code | (315) | ||
| Local Phone Number | 536-2359 | ||
| 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 | ||
| Elected Not To Use the Extended Transition Period | false | ||
| Entity Shell Company | false | ||
| Entity Public Float | $ 12,143,320 | ||
| Documents Incorporated by Reference [Text Block] | Portions of the Registrant’s definitive proxy statement for its 2024 Annual Meeting of Stockholders are incorporated by reference in Part III of this Annual Report on Form 10-K where indicated. | ||
| Document Financial Statement Error Correction [Flag] | false | ||
| Auditor Firm ID | 206 | ||
| Auditor Firm ID | MaloneBailey, LLP | ||
| Auditor Firm ID | Houston, Texas | ||
| Class A Common Stock, $0.0001 par value | |||
| 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 | 7,052,784 | ||
| 8.50% Senior Notes due 2026 | |||
| Title of 12(b) Security | 8.50% Senior Notes due 2026 | ||
| Trading Symbol | GREEL | ||
| Security Exchange Name | NASDAQ | ||
| Common Class B [Member] | |||
| Entity Common Stock, Shares Outstanding | 2,733,394 |
