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Financial Instruments (Details Textual) - 3 months ended Mar. 31, 2019
$ in Thousands, $ in Thousands
USD ($)
CAD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash $ 4,713  
Financial Instruments Disclosure 6 1.00%  
Federal Deposit Insurance Corporation [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash, FDIC Insured Amount $ 250  
Canada Deposit Insurance Corporation [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Deposits   $ 100