Segment Information - Segment Operating Results (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Revenue	$ 1,113,382	$ 1,109,435	$ 1,421,374
Segment Adjusted EBITDA	350,523	371,839	481,099
Marketing Services
Segment Reporting Information [Line Items]
Revenue	797,493	979,611	1,292,795
Segment Adjusted EBITDA	318,230	358,804	468,934
SaaS
Segment Reporting Information [Line Items]
Revenue	170,498	129,824	128,579
Segment Adjusted EBITDA	(14,004)	13,035	12,165
Thryv International
Segment Reporting Information [Line Items]
Revenue	145,391	0	0
Segment Adjusted EBITDA	$ 46,297	$ 0	$ 0