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Net sales (Details Textual)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Net Sales [Line Items]
Percentage of entity's revenue	10.00%
Trade receivables [member]
Disclosure Of Net Sales [Line Items]
Percentage of entity's revenue	49.00%	46.00%
Customer 1 [Member]
Disclosure Of Net Sales [Line Items]
Percentage of entity's revenue	28.00%		66.00%
Customer 2 [Member]
Disclosure Of Net Sales [Line Items]
Percentage of entity's revenue	15.00%	22.00%	22.00%
Customer 3 [Member]
Disclosure Of Net Sales [Line Items]
Percentage of entity's revenue	10.00%		22.00%

X

- References

No definition available.

+ Details

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- Definition

The percentage of the entity's revenue. [Refer: Revenue]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 8
-IssueDate 2017-01-01
-Paragraph 34
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=8&date=2017-03-01&anchor=para_34&doctype=Standard
-URIDate 2017-03-09

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