Annual report pursuant to Section 13 and 15(d)

Business Combination - Additional Information (Details)

v3.20.4
Business Combination - Additional Information (Details) - USD ($)
12 Months Ended
Nov. 25, 2019
Dec. 31, 2020
Dec. 31, 2019
Apr. 29, 2020
Nov. 24, 2019
Business Acquisition [Line Items]          
Common stock, shares issued 19,977,113 33,086,745 19,977,113    
Common stock, shares outstanding 19,977,113 30,288,687 19,977,113    
Balance in trust account         $ 40,800,000
Goodwill   $ 16,657,000 $ 16,953,000    
Direct and incremental costs $ 13,100,000 $ 2,700,000      
Former Securityholders of Gig Capital          
Business Acquisition [Line Items]          
Business acquisition ownership percentage 46.50%        
Esse Effe S.p.A          
Business Acquisition [Line Items]          
Prepayment amount transferred $ 6,000,000.0        
Maya          
Business Acquisition [Line Items]          
Prepayment amount transferred $ 1,500,000        
Kaleyra Incorporation          
Business Acquisition [Line Items]          
Business acquisition ownership percentage 63.36%        
Goodwill $ 0        
Other intangible assets 0        
Direct and incremental costs     $ 7,700,000    
Earnout Share          
Business Acquisition [Line Items]          
Common stock, shares issued       1,763,633  
Stock Purchase Agreement | Esse Effe S.p.A          
Business Acquisition [Line Items]          
Prepayment amount transferred 6,000,000.0        
Stock Purchase Agreement | Maya          
Business Acquisition [Line Items]          
Prepayment amount transferred $ 1,500,000        
Common Stock          
Business Acquisition [Line Items]          
Stock redemption price per share $ 10.5019        
Common Stock | Stock Purchase Agreement          
Business Acquisition [Line Items]          
Closing of business combination share consideration 10,687,106