Supplemental Disclosure with Respect to Cash Flows - Additional Information (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Supplemental Disclosure With Respect To Cash Flows [Abstract]
Cash	$ 31,474,000	$ 20,045,000
Cash equivalents	$ 0	$ 13,832,000

The amount of short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2016-01-13
-Paragraph 45
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2016-03-30&anchor=para_45&doctype=Standard
-URIDate 2016-03-31

Name:	ifrs-full_CashEquivalents
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant