Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
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- Definition

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

+ References

No definition available.

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- Definition

Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.

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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).

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

Gross number of share options (or share units) granted during the period.

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No definition available.

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- Definition

Number of new stock issued during the period.

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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Subsequent events (Narrative) (Details) - USD ($)	1 Months Ended		12 Months Ended
Subsequent events (Narrative) (Details) - USD ($)	Dec. 23, 2016	Dec. 15, 2016	Nov. 30, 2014	Jan. 31, 2017	Jan. 30, 2017	Nov. 30, 2016
Subsequent Event [Line Items]
Stock Issued During Period, Shares, New Issues			6,521,740
Lease commitment						$ 668,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Commitments and Contingencies				$ 0
Lease commitment					$ 1,300,000
Subsequent Event [Member] \| Employee [Member]
Subsequent Event [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		1,070,000
Subsequent Event [Member] \| Director [Member]
Subsequent Event [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		525,000
Subsequent Event [Member] \| Restricted Stock Units (RSUs) [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Shares, New Issues	104,599
Payments Related to Tax Withholding for Share-based Compensation	$ 60,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	200,000
Subsequent Event [Member] \| Restricted Stock Units (RSUs) [Member] \| Officer [Member]
Subsequent Event [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		600,000
Subsequent Event [Member] \| Restricted Stock Units (RSUs) [Member] \| Share-based Compensation Award, Tranche One [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Shares, New Issues		104,599
Payments Related to Tax Withholding for Share-based Compensation		$ 60,000