Acquisitions - Schedule of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Mar. 01, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Goodwill		$ 671,886	$ 609,457	$ 609,457
Thryv Australia
Business Acquisition [Line Items]
Total cash consideration	$ 216,164
Total purchase consideration, as allocated below:	216,164
Cash and cash equivalents	40,794
Accounts receivable	72,404
Other assets	34,962
Fixed assets and capitalized software	18,856
Accounts payable	(15,038)
Accrued liabilities	(41,724)
Contract liabilities	(27,075)
Other current liabilities	(6,733)
Deferred tax liabilities	(35,884)
Other liabilities	(15,505)
Total identifiable net assets	151,773
Goodwill	64,392
Total net assets acquired	216,164
Thryv Australia | Client relationships
Business Acquisition [Line Items]
Intangible assets	$ 101,839
Intangible assets, useful life	3 years 6 months
Thryv Australia | Trademarks
Business Acquisition [Line Items]
Intangible assets	$ 24,877
Intangible assets, useful life	3 years 6 months