| Cover | May 28, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | May 28, 2021 |
| Current Fiscal Year End Date | --12-31 |
| Entity File Number | 001-36137 |
| Entity Registrant Name | SPRAGUE RESOURCES LP |
| Entity Central Index Key | 0001525287 |
| Entity Tax Identification Number | 45-2637964 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 185 International Drive |
| Entity Address, City or Town | Portsmouth |
| Entity Address, State or Province | NH |
| Entity Address, Postal Zip Code | 03801 |
| City Area Code | 800 |
| Local Phone Number | 225-1560 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Units Representing Limited Partner Interests |
| Trading Symbol | SRLP |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
