Acquisitions - Narrative (Details) - USD ($) $ in Thousands			2 Months Ended	3 Months Ended
	Jan. 21, 2022	Mar. 01, 2021	Mar. 31, 2022	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Acquisition of a business, net of cash acquired				$ 22,003	$ 174,190
Bargain purchase, gain recognized, amount				7,297	$ 0
Goodwill			$ 673,713	673,713		$ 671,886	$ 609,457
New Term Loan
Business Acquisition [Line Items]
Debt issuance costs		$ 4,100
Unamortized debt issuance expense			2,500	$ 2,500
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
Total cash 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
Vivial
Business Acquisition [Line Items]
Acquisition of a business, net of cash acquired	$ 22,000
Cash and cash equivalents	8,500
Current assets	26,388
Fixed and intangible assets	9,759
Deferred tax assets	15,314
Bargain purchase, gain recognized, amount	7,300
Accounts payable assumed in business acquisition	$ 24,200
Business combination, pro forma revenue, actual			23,300
Business combination, pro forma earnings (loss), actual			$ 800