| Document and Entity Information | Nov. 30, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 30, 2021 |
| Entity Registrant Name | THRYV HOLDINGS, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-35895 |
| Entity Tax Identification Number | 13-2740040 |
| Entity Address, Address Line One | 2200 West Airfield Drive |
| Entity Address, Address Line Two | P.O. Box 619810 |
| Entity Address, City or Town | DFW Airport |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 75261 |
| City Area Code | 972 |
| Local Phone Number | 453-7000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001556739 |
| Title of 12(b) Security | Common Stock, $0.01 par value |
| Trading Symbol | THRY |
| Security Exchange Name | NASDAQ |
