Fair Value of Stock Options Under Black Scholes Option Pricing Model Based on Closing Stock Price on Date of Grant (Detail) (USD $)	3 Months Ended	1 Months Ended
Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jul. 31, 2013 Mr. Mark Meyers	Apr. 30, 2013 Mr. Mark Meyers	May 21, 2013 Stock option Mr David Schmidt
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price	$ 0.47	$ 0.004	$ 0.41			$ 0.50
Expected term (in years)	6 years	3 years	4 years 7 months 2 days	3 years	3 years	3 years
Volatility	67.20%	29.70%	26.00%	29.70%	17.40%	29.70%
Dividend rate	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
Interest rate	1.40%	0.60%	0.50%	0.50%	0.82%	0.64%

Agreed upon price for the exchange of the underlying asset.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

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Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price).

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Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Risk-free interest rate assumption used in valuing an instrument.

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