Quarterly report pursuant to Section 13 or 15(d)

Bank and Other Borrowings - Additional Information (Details)

v3.20.2
Bank and Other Borrowings - Additional Information (Details)
3 Months Ended 6 Months Ended
Jul. 29, 2020
USD ($)
Jul. 16, 2020
USD ($)
Jun. 29, 2020
USD ($)
Apr. 24, 2020
USD ($)
Apr. 09, 2020
USD ($)
Apr. 07, 2020
USD ($)
Mar. 31, 2020
USD ($)
Mar. 20, 2020
USD ($)
Mar. 11, 2020
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Jul. 29, 2020
EUR (€)
Jul. 16, 2020
EUR (€)
Mar. 20, 2020
EUR (€)
Mar. 11, 2020
EUR (€)
Jan. 23, 2020
USD ($)
Dec. 31, 2019
USD ($)
Bank And Other Borrowings [Line Items]                                      
Line of credit facility, maximum borrowing capacity                   $ 7,200,000   $ 7,200,000             $ 5,600,000
Line of credit facility, used                   $ 5,000,000.0   $ 5,000,000.0             $ 3,600,000
Interest variable rates                       1.00%              
Weighted average interest rate                   1.30%   1.30%              
Interest expense                   $ 199,000 $ 103,000 $ 417,000 $ 193,000            
Minimum                                      
Bank And Other Borrowings [Line Items]                                      
Interest variable rates                       0.60%              
Maximum                                      
Bank And Other Borrowings [Line Items]                                      
Interest variable rates                       7.60%              
Kaleyra S.p.A | Intesa SanPaolo S.p.A.                                      
Bank And Other Borrowings [Line Items]                                      
Deferment of debt repayments beyond December 31, 2020             $ 404,000                        
Kaleyra S.p.A | Intesa SanPaolo S.p.A. | BPM Loan Agreement | Subsequent Event                                      
Bank And Other Borrowings [Line Items]                                      
Interest variable rates 1.70% 1.65%                                  
Debt instrument, term 72 months 72 months                                  
Debt instrument face amount $ 6,500,000 $ 9,000,000.0                       € 5,500,000 € 7,900,000        
Description of variable rate three-month Euribor plus a spread of 1.70% three-month Euribor plus a spread of 1.65%                                  
Frequency of periodic repayment 20 quarterly installments 16 quarterly installments                                  
Exchange rate 0.84801 0.87602                       0.84801 0.87602        
Grace period 12 months 24 months                                  
Kaleyra S.p.A | Monte dei Paschi di Siena S.p.A. | Unsecured Loan Agreement                                      
Bank And Other Borrowings [Line Items]                                      
Debt instrument, term                 36 months                    
Debt instrument face amount                 $ 2,200,000               € 2,000,000.0    
Interest rate                 1.50%               1.50%    
Kaleyra S.p.A | Banco Popolare di Milano S.p.A. | BPM Loan Agreement                                      
Bank And Other Borrowings [Line Items]                                      
Interest variable rates               3.00%                      
Debt instrument, term               45 months                      
Debt instrument face amount               $ 6,500,000               € 6,000,000.0      
Description of variable rate               three-month Euribor plus a spread of 3.00%                      
Frequency of periodic repayment               15 quarterly installments                      
Kaleyra S.p.A | UBI Banca S.p.A.                                      
Bank And Other Borrowings [Line Items]                                      
Deferment of debt repayments beyond December 31, 2020     $ 404,000                                
Deferment of debt repayments beyond next 6 months           $ 694,000                          
Kaleyra S.p.A | UniCredit                                      
Bank And Other Borrowings [Line Items]                                      
Deferment of debt repayments beyond next 6 months         $ 1,600,000                            
Kaleyra S.p.A | Simest S.p.A.                                      
Bank And Other Borrowings [Line Items]                                      
Deferment of debt repayments beyond December 31, 2020       $ 350,000                              
Revolving Credit Facility | Intesa SanPaolo S.p.A.                                      
Bank And Other Borrowings [Line Items]                                      
Line of credit facility, used                   $ 950,000   $ 950,000              
Weighted average interest rate                   1.50%   1.50%              
Revolving Credit Facility | Buc Mobile                                      
Bank And Other Borrowings [Line Items]                                      
Line of credit facility, maximum borrowing capacity                   $ 1,000,000.0   $ 1,000,000.0              
Revolving Credit Facility | Buc Mobile | Intesa SanPaolo S.p.A.                                      
Bank And Other Borrowings [Line Items]                                      
Line of credit facility, maximum borrowing capacity                                   $ 1,000,000.0  
New Financing | Kaleyra S.p.A | Banco Popolare di Milano S.p.A. | BPM Loan Agreement                                      
Bank And Other Borrowings [Line Items]                                      
Debt instrument face amount               $ 2,700,000