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Significant Accounting Policies (Details) - Furniture and fixtures [member]
12 Months Ended
Dec. 31, 2017
Bottom of range [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Depreciation at declining balance rates 20.00%
Top of range [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Depreciation at declining balance rates 30.00%