v3.8.0.1

Capital Stock - Summary of Non-Vested Stock Option Activity and Related Information (Detail) - $ / shares | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Options |  |  |
Outstanding non-vested stock options - beginning of year (in shares) | 132,689 | 110,829 | 0
Granted (in shares) | 216,043 | 58,434 | 110,829
Vested (in shares) | (56,421) | (36,574) | 0
Outstanding non-vested stock options - end of year (in shares) | 292,311 | 132,689 | 110,829
Weighted-Average Grant Date Fair Value ($) |  |  |
Outstanding non-vested stock options - beginning of year (in dollars per share) | $ 4.75 | $ 4.25 | $ 0.00
Granted (in dollars per share) | 3.74 | 5.39 | 4.25
Vested (in dollars per share) | 4.64 | 4.25 | 0.00
Outstanding non-vested stock options - end of year (in dollars per share) | $ 4.02 | $ 4.75 | $ 4.25

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- Definition Net number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Number of non-vested options outstanding. + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Weighted average grant-date fair value of non-vested options outstanding. + References No definition available. + Details
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