Segment Information - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	$ 1,113,382	$ 1,109,435	$ 1,421,374
Marketing Services
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	797,493	979,611	1,292,795
Marketing Services | PYP
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	365,966	443,315	605,952
Marketing Services | IYP
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	239,531	280,750	339,416
Marketing Services | SEM
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	129,606	167,770	232,345
Marketing Services | Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	62,390	87,776	115,082
SaaS
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	170,498	129,824	128,579
SaaS | Thryv Platform
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	107,318	100,548	104,327
SaaS | Thryv Add-ons
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	63,180	29,276	24,252
Thryv International
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	145,391	0	0
Thryv International | PYP
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	46,859	0	0
Thryv International | IYP
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	55,198	0	0
Thryv International | SEM
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	18,966	0	0
Thryv International | Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	23,814	0	0
Thryv International | Thryv Platform and Thryv Add-Ons
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	$ 554	$ 0	$ 0