| Document and Entity Information | Apr. 21, 2022 |
| Document And Entity Information [Line Items] | |
| Entity Incorporation State Country Code | DE |
| Amendment Flag | false |
| Entity Central Index Key | 0001392091 |
| Document Type | 8-K |
| Document Period End Date | Apr. 21, 2022 |
| Entity Registrant Name | BLUEKNIGHT ENERGY PARTNERS, L.P. |
| Entity File Number | 001-33503 |
| Entity Tax Identification Number | 20-8536826 |
| Entity Address, Address Line One | 6060 American Plaza |
| Entity Address, Address Line Two | Suite 600 |
| Entity Address, City or Town | Tulsa |
| Entity Address, State or Province | OK |
| Entity Address, Postal Zip Code | 74135 |
| City Area Code | (918) |
| Local Phone Number | 237-4000 |
| Written Communications | false |
| Soliciting Material | true |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Unit [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Common Units |
| Trading Symbol | BKEP |
| Security Exchange Name | NASDAQ |
| Series A Preferred Unit [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Series A Preferred Units |
| Trading Symbol | BKEPP |
| Security Exchange Name | NASDAQ |
