Acquisitions - Narrative (Details) - USD ($) $ in Thousands			3 Months Ended	6 Months Ended
	Jan. 21, 2022	Mar. 01, 2021	Jun. 30, 2022	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Acquisition of a business, net of cash acquired				$ 22,777	$ 174,190
Bargain purchase gain (loss)				7,005	$ 0
Goodwill			$ 668,821	668,821		$ 671,886	$ 609,457
New Term Loan
Business Acquisition [Line Items]
Debt issuance costs		$ 4,100
Unamortized debt issuance expense			2,500	2,500
Vivial
Business Acquisition [Line Items]
Acquisition of a business, net of cash acquired	$ 22,800
Cash and cash equivalents	8,500
Current assets	27,705
Fixed and intangible assets	9,759
Deferred tax assets	15,447
Bargain purchase gain (loss)	7,000
Change in bargain purchase gain			$ (300)
Accounts payable assumed in business acquisition	$ 25,200
Business combination, pro forma revenue, actual				53,000
Working capital adjustment				$ 800
Thryv Australia
Business Acquisition [Line Items]
Cash and cash equivalents		40,794
Deferred tax assets		34,962
Accounts payable assumed in business acquisition		15,038
Goodwill		64,392
Paid consideration		216,164
Transaction costs		8,700
Thryv Australia | New Term Loan
Business Acquisition [Line Items]
Debt issuance costs		4,200
Unamortized debt issuance expense		$ 2,500