Segment Information - Schedule of Segment Operating Results (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Revenue	$ 179,852	$ 183,822	$ 637,560	$ 680,798
Segment Gross Profit	111,981	103,644	414,210	418,537
Segment Adjusted EBITDA	19,623	7,331	133,051	135,239
Thryv Marketing Services
Segment Reporting Information [Line Items]
Revenue	92,797	116,462	398,389	491,051
Segment Gross Profit	51,374	60,776	252,219	299,305
Segment Adjusted EBITDA	9,309	7,835	109,137	129,717
Thryv SaaS
Segment Reporting Information [Line Items]
Revenue	87,055	67,360	239,171	189,747
Segment Gross Profit	60,607	42,868	161,991	119,232
Segment Adjusted EBITDA	$ 10,314	$ (504)	$ 23,914	$ 5,522