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Earnings Per Share - Additional Information (Detail) - shares | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Earnings per share [line items] |  |  |
Description of types of warranties | Multiplying it by 15 |  |
Anti-dilutive instruments | 3,309,539 | 2,360,945 | 2,033,768
Common Shares [member] |  |  |
Earnings per share [line items] |  |  |
Weighted average number of shares outstanding | 24,757,176 | 24,454,850 | 21,522,342

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- Definition Anti-dilutive shares of instruments with potential future dilutive effect not included in calculation of diluted earnings shares. + References No definition available. + Details
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- Definition The description of types of warranties and related obligations in contracts with customers. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2018-01-01 -Name IFRS -Number 15 -IssueDate 2017-01-01 -Paragraph 119 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=15&date=2017-03-01&anchor=para_119_e&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2017-01-01 -Paragraph 70 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=33&date=2017-03-01&anchor=para_70_b&doctype=Standard -URIDate 2017-03-09 + Details
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- Details
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