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Financial Instruments (Tables)
 12 Months Ended
Dec. 31, 2017
Disclosure of detailed information about financial instruments [abstract]  
Schedule of balances in foreign currencies
Balances in foreign currencies at December 31, 2017 are as follows:
 

US dollars
$

British pounds
£
Euro
€
Cash and cash equivalents
1,948,573

21,755

19,372

Contract receivable
3,800,000

—

—

Accounts payable
(777,271
)
(13,949
)
(1,100
)
 
4,971,302

7,806

18,272