| Document and Entity Information - shares | 6 Months Ended | |
| Jun. 30, 2024 | Jul. 30, 2024 | |
| Cover [Abstract] | ||
| Document Type | 10-Q/A | |
| Amendment Flag | false | |
| Document Quarterly Report | true | |
| Document Period End Date | Jun. 30, 2024 | |
| Current Fiscal Year End Date | --12-31 | |
| Document Fiscal Year Focus | 2024 | |
| Document Fiscal Period Focus | Q2 | |
| Document Transition Report | false | |
| Entity File Number | 001-35895 | |
| Entity Registrant Name | THRYV HOLDINGS, INC. | |
| Entity Central Index Key | 0001556739 | |
| Entity Incorporation, State or Country Code | DE | |
| Entity Tax Identification Number | 13-2740040 | |
| Entity Address, Address Line One | 2200 West Airfield Drive, P.O. Box 619810 | |
| Entity Address, City or Town | D/FW Airport | |
| Entity Address, State or Province | TX | |
| Entity Address, Postal Zip Code | 75261 | |
| City Area Code | 972 | |
| Local Phone Number | 453-7000 | |
| Title of 12(b) Security | Common Stock, $0.01 par value per share | |
| Trading Symbol | THRY | |
| Security Exchange Name | NASDAQ | |
| Entity Current Reporting Status | Yes | |
| Entity Interactive Data Current | Yes | |
| Entity Filer Category | Large Accelerated Filer | |
| Entity Small Business | false | |
| Entity Emerging Growth Company | false | |
| Entity Shell Company | false | |
| Entity Common Stock, Shares Outstanding | 36,303,038 |
