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Stock Options Granted To Employees And Non-Employees (Detail) (USD $) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2013 | Dec. 31, 2012
Number of Options Granted | 687,183 | 454,014
Exercise Price | $ 3.19 | $ 0.94
Options granted on 01/08/2012 |  |
Grant Date | Jan. 08, 2012 |
Number of Options Granted | 112,881 |
Exercise Price | $ 0.94 |
Estimated Option Fair Value | $ 0.56 |
Intrinsic Value |  |
Options granted on 03/14/2012 |  |
Grant Date | Mar. 14, 2012 |
Number of Options Granted | 313,094 |
Exercise Price | $ 0.94 |
Estimated Option Fair Value | $ 0.56 |
Intrinsic Value |  |
Options granted on 06/13/2012 |  |
Grant Date | Jun. 13, 2012 |
Number of Options Granted | 4,314 |
Exercise Price | $ 0.94 |
Estimated Option Fair Value | $ 0.56 |
Intrinsic Value |  |
Options granted on 09/19/2012 |  |
Grant Date | Sep. 19, 2012 |
Number of Options Granted | 8,011 |
Exercise Price | $ 0.94 |
Estimated Option Fair Value | $ 0.56 |
Intrinsic Value |  |
Options granted on 11/08/2012 |  |
Grant Date | Nov. 08, 2012 |
Number of Options Granted | 15,713 |
Exercise Price | $ 0.94 |
Estimated Option Fair Value | $ 0.56 |
Intrinsic Value |  |
Options granted on 01/06/2013 |  |
Grant Date | Jan. 06, 2013 |
Number of Options Granted | 337,282 |
Exercise Price | $ 1.50 |
Estimated Option Fair Value | $ 0.94 |
Intrinsic Value |  |
Options granted on 03/08/2013 |  |
Grant Date | Mar. 08, 2013 |
Number of Options Granted | 14,008 |
Exercise Price | $ 1.50 |
Estimated Option Fair Value | $ 0.94 |
Intrinsic Value |  |
Options granted on 06/19/2013 |  |
Grant Date | Jun. 19, 2013 |
Number of Options Granted | 59,497 |
Exercise Price | $ 2.63 |
Estimated Option Fair Value | $ 1.88 |
Intrinsic Value |  |
Options granted on 07/19/2013 |  |
Grant Date | Jul. 19, 2013 |
Number of Options Granted | 206,083 |
Exercise Price | $ 4.69 |
Estimated Option Fair Value | $ 2.95 |
Intrinsic Value |  |
Options granted on 09/18/2013 |  |
Grant Date | Sep. 18, 2013 |
Number of Options Granted | 72,014 |
Exercise Price | $ 7.51 |
Estimated Option Fair Value | $ 4.76 |
Intrinsic Value |  |

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- Definition Share Based Compensation Arrangement By Share Based Payment Award Options Grant Date + References No definition available. + Details
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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=6415400&loc=d3e5070-113901 + Details
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- Definition The grant-date intrinsic 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=6415400&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=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. + References No definition available. + Details
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