| Document and Entity Information - USD ($) $ in Millions | 12 Months Ended | ||
| Dec. 31, 2021 | Feb. 14, 2022 | Jun. 30, 2021 | |
| Document and Entity Information [Abstract] | |||
| Document type | 10-K/A | ||
| Document period end date | Dec. 31, 2021 | ||
| Document fiscal period focus | FY | ||
| Document fiscal year focus | 2021 | ||
| Document Annual Report | true | ||
| Document Transition Report | false | ||
| Entity registrant name | Green Plains PARTNERS LP | ||
| Entity Incorporation, State or Country Code | DE | ||
| Entity File Number | 001-37469 | ||
| Entity Address, Address Line One | 1811 Aksarben Drive | ||
| Entity Address, City or Town | Omaha | ||
| Entity Address, State or Province | NE | ||
| Entity Address, Postal Zip Code | 68106 | ||
| City Area Code | 402 | ||
| Local Phone Number | 884-8700 | ||
| Title of 12(b) Security | Common Units, Representing Limited Partner Interests | ||
| Trading symbol | GPP | ||
| Security Exchange Name | NASDAQ | ||
| Entity Voluntary Filers | No | ||
| Entity Well-known Seasoned Issuer | No | ||
| Entity Current Reporting Status | Yes | ||
| Entity Interactive Data Current | Yes | ||
| Entity Tax Identification Number | 47-3822258 | ||
| Entity Filer Category | Accelerated Filer | ||
| Entity Small Business | false | ||
| Entity Emerging Growth Company | false | ||
| ICFR Auditor Attestation Flag | true | ||
| Entity Shell Company | false | ||
| Entity Public Float | $ 146 | ||
| Entity common stock, shares outstanding | 23,227,653 | ||
| Entity central index key | 0001635650 | ||
| Current fiscal year end date | --12-31 | ||
| Amendment flag | true | ||
| Amendment Description | EXPLANATORY NOTE Green Plains Partners LP (the “partnership”) is filing this Amendment No. 1 on Form 10-K/A (this “Amendment”), to the partnership’s Annual Report on Form 10-K for the fiscal year ended December 31, 2021, originally filed with the Securities and Exchange Commission (the “SEC”) on February 18, 2022 (the “Original Filing”), solely to include information required by Item 11 of Part III of Form 10-K. The information required by Item 11 of Part III of From 10-K was previously omitted from the Original Filing in reliance on General Instruction G(3) to Form 10-K. This Amendment amends and restates in its entirety Item 11 of Part III of the Original Filing. Pursuant to the SEC rules, Item 15 of Part IV has also been amended to contain the currently dated certificates from the partnership’s principal executive officer and principal financial officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. The certificates of the partnership’s principal executive officer and principal financial officer are attached to this Amendment as Exhibits 31.3 and 31.4. Because no financial statements have been included in this Amendment and this Amendment does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4 and 5 of the certifications have been omitted. Additionally, the partnership is not including the certificate under Section 906 of the Sarbanes-Oxley Act of 2002 as no financial statements are being filed with this Amendment. Other than with respect to the information contained herein with respect to Item 11 of Part III below, this Amendment does not change any of the information contained in the Original Filing. Other than as specifically set forth herein, the partnership has not updated or amended the disclosures contained in the Original Filing to reflect events that have occurred since the date thereof. Accordingly, this Amendment should be read in conjunction with the Original Filing. | ||
| Auditor Name | KPMG LLP | ||
| Auditor Location | Omaha, NE | ||
| Auditor Firm ID | 185 |
