Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Additional Information (Details)

v3.21.1
Subsequent Events - Additional Information (Details)
Apr. 15, 2021
USD ($)
Apr. 15, 2021
EUR (€)
Mar. 31, 2021
USD ($)
Feb. 15, 2021
USD ($)
Nov. 30, 2020
USD ($)
Aug. 31, 2020
USD ($)
Preferred Stock | Modification of 2018 Solutions Infini Purchase Agreement | Solutions Infini            
Subsequent Event [Line Items]            
Preference shares, performance bonuses       $ 826,000 $ 883,000 $ 1,400,000
Executive Managers | Preferred Stock | Modification of 2018 Solutions Infini Purchase Agreement | Solutions Infini            
Subsequent Event [Line Items]            
Preference shares, performance bonuses     $ 340,000      
Subsequent Event | New General Unsecured Loan Agreement | Kaleyra Incorporation            
Subsequent Event [Line Items]            
Debt instrument, term 6 years          
Debt instrument, payment terms The loan will have a duration of six (6) years starting from the date of disbursement and will have to be repaid in half-yearly installments starting after a two-year pre-amortization period.          
Subsequent Event | New General Unsecured Loan Agreement | Kaleyra Incorporation | Simest S.p.A.            
Subsequent Event [Line Items]            
Debt instrument face amount $ 3,600,000 € 3,000,000.0        
Subsequent Event | New General Unsecured Loan Agreement | Kaleyra Incorporation | Fund for Integrated Promotion            
Subsequent Event [Line Items]            
Debt instrument face amount 505,000 422,000        
Subsequent Event | New General Unsecured Loan Agreement | Kaleyra Incorporation | Fund 394/81            
Subsequent Event [Line Items]            
Debt instrument face amount $ 3,100,000 € 2,600,000        
Debt instrument, subsidized interest rate 0.055% 0.055%        
Debt instrument, reference interest rate 0.55% 0.55%        
Subsequent Event | Preferred Stock | Modification of 2018 Solutions Infini Purchase Agreement | Solutions Infini            
Subsequent Event [Line Items]            
Preference shares, performance bonuses $ 340,000          
Subsequent Event | Executive Managers | Preferred Stock | Modification of 2018 Solutions Infini Purchase Agreement | Solutions Infini            
Subsequent Event [Line Items]            
Payment of bonus compensation 340,000          
Preference shares, performance bonuses $ 0