| Cover | Dec. 10, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Dec. 10, 2020 |
| Entity Registrant Name | Priority Technology Holdings, Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-37872 |
| Entity Tax Identification Number | 47-4257046 |
| Entity Address, Address Line One | 2001 Westside Parkway |
| Entity Address, Address Line Two | Suite 155 |
| Entity Address, City or Town | Alpharetta, |
| Entity Address, State or Province | GA |
| Entity Address, Postal Zip Code | 30004 |
| City Area Code | 800 |
| Local Phone Number | 935-5961 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common stock, $0.001 par value |
| Trading Symbol | PRTH |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity Central Index Key | 0001653558 |
| Amendment Flag | false |
