Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
3 Months Ended
Mar. 31, 2020
May 12, 2020
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2020  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q1  
Entity Registrant Name KALEYRA, INC.  
Entity Central Index Key 0001719489  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business true  
Entity Shell Company false  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Common Stock, Shares Outstanding   22,195,276
Entity Interactive Data Current Yes  
Entity File Number 001-38320  
Entity Tax Identification Number 82-3027430  
Entity Incorporation, State or Country Code DE  
Entity Address, Address Line One Via Marco D’Aviano, 2  
Entity Address, City or Town Milano MI  
Entity Address, Country IT  
Entity Address, Postal Zip Code 20131  
City Area Code +39 02  
Local Phone Number 288 5841  
Document Quarterly Report true  
Document Transition Report false  
Common Stock, Par Value $0.0001 Per Share    
Document Information [Line Items]    
Title of Each Class Common Stock, par value $0.0001 per share  
Trading Symbol KLR  
Security Exchange Name NYSEAMER  
Warrants, at an Exercise Price of $11.50 per Share of Common Stock    
Document Information [Line Items]    
Title of Each Class Warrants, at an exercise price of $11.50 per share of Common Stock  
Trading Symbol KLR WS  
Security Exchange Name NYSEAMER