XML 13 R1.htm IDEA: XBRL DOCUMENT v3.25.3
Cover - shares
 9 Months Ended
Sep. 30, 2025
Nov. 07, 2025
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2025  
Document Transition Report false  
Entity File Number 000-30141  
Entity Registrant Name LIVEPERSON, INC.  
Entity Central Index Key 0001102993  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q3  
Amendment Flag false  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 13-3861628  
Entity Address, Address Line One 530 7th Ave, Floor M1  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10018  
City Area Code (212)  
Local Phone Number 609-4200  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   11,857,018
Common Stock    
Document Information [Line Items]    
Title of 12(b) Security Common Stock, par value $0.001 per share  
Trading Symbol LPSN  
Security Exchange Name NASDAQ  
Rights to Purchase Series A Junior Participating Preferred Stock    
Document Information [Line Items]    
Title of 12(b) Security Rights to Purchase Series A JuniorParticipating Preferred Stock  
Security Exchange Name NASDAQ  
No Trading Symbol Flag true