Summary of Significant Accounting Policies - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2019	Jun. 18, 2021	Jan. 13, 2021	Mar. 07, 2019
Debt Instrument [Line Items]
Fair Value	$ 44,192,000		$ 44,192,000		$ 48,182,000
Restricted cash	0		0		$ 0
Goodwill impairment charge	0	$ 0	0	$ 0
Impairment loss on right -of use assets	200,000	0	$ 700,000	0
Deferred sales commission, amortization period			5 years
Amortization of deferred sales commissions	900,000	800,000	$ 2,702,000	2,312,000
Deferred sales commission, impairment loss	0	0	0	0
Capitalized advertising	0	0	0	0
Advertising expense	200,000	300,000	1,400,000	2,000,000
Capitalized software development costs related to internal-use software	$ 0	$ 0	$ 0	$ 0
Number of warrants outstanding (in shares)	13,333,328		13,333,328
Number of common shares called by each warrant (in shares)							1	1
Exercise price (in dollars per share)							$ 11.50	$ 11.50
Private Warrants \| Crescent
Debt Instrument [Line Items]
Warrants issued (in shares)									7,000,000
Public Warrant
Debt Instrument [Line Items]
Number of warrants outstanding (in shares)								12,499,995
Exercise price (in dollars per share)							$ 0.01
Public Warrant \| Crescent
Debt Instrument [Line Items]
Warrants issued (in shares)									12,499,995
Forward Purchase Warrant
Debt Instrument [Line Items]
Warrants issued (in shares)								833,333
Number of warrants outstanding (in shares)								833,333
2021 Equity Incentive Plan
Debt Instrument [Line Items]
Number of potential award units (in shares)	19,695,679		19,695,679
MIUs
Debt Instrument [Line Items]
Weighted-average recognition period			1 year 3 months
MIUs \| Management Incentive Unit Program
Debt Instrument [Line Items]
Vesting period						5 years
Percent vested each anniversary						20.00%
Weighted-average recognition period			5 years
Unvested RSUs \| Employee
Debt Instrument [Line Items]
Weighted-average recognition period			3 years
Tax withholding obligation			530,919
Minimum
Debt Instrument [Line Items]
Typical contract term			1 year
Payment term			10 days
Minimum \| Unvested RSUs \| 2021 Equity Incentive Plan \| Employee
Debt Instrument [Line Items]
Vesting period			1 year
Maximum
Debt Instrument [Line Items]
Typical contract term			3 years
Payment term			60 days
Maximum \| Unvested RSUs \| 2021 Equity Incentive Plan \| Employee
Debt Instrument [Line Items]
Vesting period			6 years
Accounts Payable Benchmark \| Supplier Concentration Risk \| Two Suppliers
Debt Instrument [Line Items]
Concentration risk, percentage			21.00%
Accounts Payable Benchmark \| Supplier Concentration Risk \| One Supplier
Debt Instrument [Line Items]
Concentration risk, percentage					37.70%
Revenue Benchmark \| Professional Service \| Professional Services
Debt Instrument [Line Items]
Concentration risk, percentage			1.60%
PNC Bank \| Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 5,000,000		$ 5,000,000
PNC Bank \| Line of Credit \| Letter of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity	1,500,000		1,500,000
Eighth Amendment To The Credit Facility \| PNC Bank \| Term Loan
Debt Instrument [Line Items]
Face amount	$ 54,500,000		$ 54,500,000

LiveVox Holdings, Inc. 10-Q