v3.21.2
Summary of significant accounting policies (Schedule of Consolidated Subsidiaries) (Details)
Dec. 31, 2020
SGOCO International  
Entity Information [Line Items]  
Noncontrolling Interest, Ownership Percentage by Parent 100.00%
Beijing SGOCO  
Entity Information [Line Items]  
Noncontrolling Interest, Ownership Percentage by Parent 100.00%
Giant Financial Services Limited ("GFS")  
Entity Information [Line Items]  
Noncontrolling Interest, Ownership Percentage by Parent 100.00%
Apiguru Pty Limited ("Apiguru")  
Entity Information [Line Items]  
Noncontrolling Interest, Ownership Percentage by Parent 100.00%
Giant Connection Limited  
Entity Information [Line Items]  
Noncontrolling Interest, Ownership Percentage by Parent 100.00%
Giant Credit Limited  
Entity Information [Line Items]  
Noncontrolling Interest, Ownership Percentage by Parent 100.00%
Eleven Hau Fook Street Limited  
Entity Information [Line Items]  
Noncontrolling Interest, Ownership Percentage by Parent 100.00%
Paris Sky Limited  
Entity Information [Line Items]  
Noncontrolling Interest, Ownership Percentage by Parent 100.00%
Vision Lane Limited  
Entity Information [Line Items]  
Noncontrolling Interest, Ownership Percentage by Parent 100.00%
Suns Tower Limited  
Entity Information [Line Items]  
Noncontrolling Interest, Ownership Percentage by Parent 100.00%
First Asia Tower Limited  
Entity Information [Line Items]  
Noncontrolling Interest, Ownership Percentage by Parent 100.00%