Document and Entity Information
Jun. 01, 2021
Document Information [Line Items]  
Document Type 8-K
Document Period End Date Jun. 01, 2021
Entity Registrant Name Kaleyra, Inc.
Entity Incorporation, State or Country Code DE
Entity File Number 001-38320
Entity Tax Identification Number 82-3027430
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
Country Region 39
City Area Code 02
Local Phone Number 288 5841
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company true
Entity Ex Transition Period false
Amendment Flag false
Entity Central Index Key 0001719489
Common Stock [Member]  
Document Information [Line Items]  
Title of Each Class Common Stock, par value $0.0001 per share
Trading Symbol KLR
Name of Each Exchange on Which Registered NYSEAMER
Warrant [Member]  
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
Name of Each Exchange on Which Registered NYSEAMER