Acquisitions - Narrative (Details) - USD ($) $ in Thousands			11 Months Ended	12 Months Ended
	Jan. 21, 2022	Mar. 01, 2021	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Acquisition of a business, net of cash acquired				$ 22,793	$ 175,370	$ 0
Bargain purchase gain				(10,883)	0	0
Goodwill			$ 566,004	566,004	671,886	$ 609,457
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
Other assets	14,500
Bargain purchase gain	(10,900)
Accounts payable	$ (20,400)
Business combination, pro forma revenue, actual			$ 88,800		$ 1,240,000
Working capital adjustment				800
Decrease to sales tax reserve				3,200
Change in bargain purchase gain				$ (3,600)
Thryv Australia
Business Acquisition [Line Items]
Cash and cash equivalents		40,794
Other assets		34,962
Accounts payable		(15,038)
Goodwill		64,392
Total cash consideration		216,164
Transaction costs		8,700
Thryv Australia | Term Loan
Business Acquisition [Line Items]
Debt issuance costs		4,200
Unamortized debt issuance expense		$ 2,500