Represents the percentage of stock options immediately vested on change of control.

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- Definition

Share based compensation arrangement by share based payment award options in money number.

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- Definition

Stock based Compensation

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No definition available.

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- Definition

Represents the term for granting stock in excess of cash salary or bonus in excess of dollar one.

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No definition available.

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- Definition

The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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- Definition

Description of the deferred compensation arrangement, including fixed amounts and determinable awards, or the method for determining payments and awards, the timing of such payments and awards, and any requisite service or performance criteria, as of the balance sheet date.

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- Definition

The per share price that the individual must pay to acquire shares under the deferred compensation arrangement.

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The carrying amount of the liability as of the balance sheet date to an individual under a deferred compensation arrangement. This amount may be the result of periodic accruals made over the period of active employment, or reflect termination benefits resulting contractual terms or a death benefit.

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Minimum period the individual is required to perform services to be fully vested under the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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The maximum number of shares authorized for issuance under the deferred compensation arrangement as of the balance sheet date.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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.

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- Definition

Percentage of vesting of share-based compensation awards.

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- Definition

Number of share options (or share units) exercised during the current period.

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Stock-based Payment Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Millions			1 Months Ended	6 Months Ended
	Apr. 15, 2015	Dec. 16, 2014	Oct. 31, 2013	Jan. 31, 2016	Jan. 31, 2015
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Number of stock options exercised				100,000
Stock Based Compensation (Textual)
Shares available for calculating intrinsic value (in shares)				13,324,066
Nonqualified stock options to purchase of shares, exercise price			$ 35.62
Term for not granting cash salary or bonus compensation in excess of $ 1.00 per year			5 years
Deferred compensation arrangement with individual - requisite service period			5 years
Deferred compensation arrangement with individual, description				Each option will become fully vested, assuming continued service on April 15, 2019 and December 16, 2018.
Percentage of stock options which would get immediately vested on change of control			100.00%
Fair value of option at grant date (in dollars per share)			$ 11.43
Total compensation expense to be recognized per grant			$ 40.0
Compensation expense				$ 3.8	$ 3.8
A. Jayson Adair, the Chief Executive Officer [Member]
Stock Based Compensation (Textual)
Nonqualified stock options to purchase of shares			2,000,000
Vincent W. Mitz, the President [Member]
Stock Based Compensation (Textual)
Nonqualified stock options to purchase of shares			1,500,000
Tranche One on December 16, 2014 [Member] \| A. Jayson Adair, the Chief Executive Officer [Member]
Stock Based Compensation (Textual)
Percentage of total aggregate options vested		20.00%
Tranche Two on April 15, 2015 [Member] \| A. Jayson Adair, the Chief Executive Officer [Member]
Stock Based Compensation (Textual)
Percentage of total aggregate options vested	20.00%
Tranche Three Vesting Monthly [Member] \| A. Jayson Adair, the Chief Executive Officer [Member]
Stock Based Compensation (Textual)
Award vesting period			4 years