Accounting policies (Schedule of Consolidated Subsidiaries) (Details) |
Dec. 31, 2017 |
Dec. 28, 2015 |
|---|---|---|
| Entity Information [Line Items] | ||
| Ownership percentage | 100.00% | |
| SGOCO International [Member] | ||
| Entity Information [Line Items] | ||
| Ownership percentage | 100.00% | |
| Beijing SGOCO [Member] | ||
| Entity Information [Line Items] | ||
| Ownership percentage | 100.00% | |
| SGO [Member] | ||
| Entity Information [Line Items] | ||
| Ownership percentage | 100.00% | |
| SGOCO Shenzhen [Member] | ||
| Entity Information [Line Items] | ||
| Ownership percentage | 100.00% | |
| BOCA [Member] | ||
| Entity Information [Line Items] | ||
| Ownership percentage | 100.00% | |
| Century Skyway Limited [Member] | ||
| Entity Information [Line Items] | ||
| Ownership percentage | 100.00% | |
| Shen Zhen Provizon Technology Co., Limited [Member] | ||
| Entity Information [Line Items] | ||
| Ownership percentage | 100.00% | |
| Giant Connection Limited [Member] | ||
| Entity Information [Line Items] | ||
| Ownership percentage | 100.00% | |
| Giant Credit Limited [Member] | ||
| Entity Information [Line Items] | ||
| Ownership percentage | 100.00% |