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Approval of Financial Statements	12 Months Ended
	Dec. 31, 2017
Text block1 [abstract]
Approval of Financial Statements	2. APPROVAL OF FINANCIAL STATEMENTS The consolidated financial statements were authorized for issue by the management on March 23, 2018.

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Text block1 [abstract]

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The disclosure of the authorisation of financial statements for issue.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-IssueDate 2017-01-01
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-URIDate 2017-03-09

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