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Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Accrued Liabilities (Details) - USD ($)	3 Months Ended		6 Months Ended
Accrued Liabilities (Details) - USD ($)	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]
Accrued salaries and related expenses	$ 50,779,000		$ 50,779,000		$ 53,844,000
Accrued severance	872,000		872,000		2,280,000
Accrued taxes	48,571,000		48,571,000		26,209,000
Accrued expenses	63,398,000		63,398,000		51,284,000
Accrued service credits	4,982,000		4,982,000		5,996,000
Accrued liabilities	168,602,000		168,602,000		$ 139,613,000
Severance costs	566,000	$ 4,005,000	1,170,000	$ 7,349,000
Payments for restructuring	913,000	4,167,000	2,314,000	6,554,000
Employee Severance
Restructuring Cost and Reserve [Line Items]
Severance costs		4,000,000.0
COVID-19 Related
Restructuring Cost and Reserve [Line Items]
Severance costs	0	4,000,000.0	0	5,000,000.0
Payments for restructuring	51,000	2,227,000	119,000	2,227,000
YP Integration Related
Restructuring Cost and Reserve [Line Items]
Payments for restructuring	0	1,110,000	0	2,898,000
Other
Restructuring Cost and Reserve [Line Items]
Payments for restructuring	862,000	830,000	2,195,000	1,429,000
Marketing Services
Restructuring Cost and Reserve [Line Items]
Severance costs	420,000	3,593,000	934,000	6,603,000
SaaS
Restructuring Cost and Reserve [Line Items]
Severance costs	85,000	$ 412,000	170,000	$ 746,000
Thryv International
Restructuring Cost and Reserve [Line Items]
Severance costs	$ 61,000		$ 66,000