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Capital Stock - Summary of Company's Restricted Share Award Activity (Detail) (Restricted share award [Member], USD $) In Thousands, except Share data, unless otherwise specified | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2014 | Dec. 31, 2013
Restricted share award [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Number of Restricted Stock Awards Outstanding, Beginning balance | 1,842,351 | 1,156,078
Number of Restricted Stock Awards Outstanding, Restricted stock awards granted | 500,894 | 686,273
Number of Restricted Stock Awards Outstanding, Restricted stock awards released or forfeited | 0 | 0
Number of Restricted Stock Awards Outstanding, Ending balance | 2,343,245 | 1,842,351
Weighted Average Grant Date Fair Value, Beginning balance | $ 0.6787 | $ 0.4761
Weighted Average Grant Date Fair Value, Restricted stock awards granted | $ 2.6602 | $ 1.0200
Weighted Average Grant Date Fair Value, Restricted stock awards released or forfeited | $ 0 | $ 0
Weighted Average Grant Date Fair Value, Ending balance | $ 1.1023 | $ 0.6787
Aggregate Intrinsic Value, Beginning balance | $ 1,250 | $ 550
Aggregate Intrinsic Value, Restricted stock awards granted | 1,332 | 700
Aggregate Intrinsic Value, Restricted stock awards released or forfeited | 0 | 0
Aggregate Intrinsic Value, Ending balance | $ 2,582 | $ 1,250

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting 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)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + 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)(2)(iii)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + 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)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + 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)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Share based compensation arrangement by share based payment award equity instruments other than options forfeited and expirations in period aggregate intrinsic value. + References No definition available. + Details
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