Stockholders' Equity (Deficiency) - Outstanding Options Granted to Consultants for Sales and Pre-Marketing Services (Detail) (USD $)	9 Months Ended
Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options for shares of common stock	838,940
Exercise price per share	$ 26.189
Options exercisable	2,674,799
Consultants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options for shares of common stock	87,250
Options exercisable	17,932
Consultants [Member] \| December 2006 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options for shares of common stock	15,000
Exercise price per share	$ 0.901
Options exercisable	15,000
Exercisable through	2016-12
Grant date	2006-12
Consultants [Member] \| February 2013 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options for shares of common stock	4,000
Exercise price per share	$ 12.470
Options exercisable	1,581
Exercisable through	2023-02
Grant date	2013-02
Consultants [Member] \| August 2013 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options for shares of common stock	5,000
Exercise price per share	$ 21.140
Options exercisable	1,351
Exercisable through	2023-08
Grant date	2013-08
Consultants [Member] \| October 2013 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options for shares of common stock	1,250
Exercise price per share	$ 24.230
Exercisable through	2023-10
Grant date	2013-10
Consultants [Member] \| March 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options for shares of common stock	17,050
Exercise price per share	$ 39.860
Exercisable through	2024-03
Grant date	2014-03
Consultants [Member] \| May 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options for shares of common stock	8,700
Exercise price per share	$ 22.010
Exercisable through	2024-05
Grant date	2014-05
Consultants [Member] \| August 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options for shares of common stock	36,250
Exercise price per share	$ 21.000
Exercisable through	2024-08
Grant date	2014-08

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option 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)(1)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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

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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.

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Award Exercisable Date

+ References

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- Definition

Share Based Compensation Arrangement By Share Based Payments Award Grant Date

+ References

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