| Component: (Network and Table) | |
|---|---|
| Network | 00000090 - Disclosure - 23. SEGMENTED INFORMATION (Details) (http://gillainc.com/role/SegmentedInformationDetails) |
| Table | Statement [Table] |
| Reporting Entity [Axis] | 0001004411 (http://www.sec.gov/CIK) |
| Statement [Line Items] | Period [Axis] | |||||||
|---|---|---|---|---|---|---|---|---|
2016-12-31 | 2015-12-31 | |||||||
| Geographical [Axis] | Geographical [Axis] | |||||||
| Canada | United States | Europe [Member] | Geographical [Domain] | Canada | United States | Europe [Member] | Geographical [Domain] | |
Total assets | 1,149,948 | 1,626,799 | ||||||