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Stock-based Compensation (Details Textual) (USD $) In Millions, except Share data, unless otherwise specified | 6 Months Ended |
--- | --- | ---
Oct. 31, 2013 | Apr. 30, 2014
Stock Based Compensation (Textual) |  |
Shares available for calculating intrinsic value (in shares) |  | 18,273,258
Nonqualified stock options to purchase of shares, exercise price | $ 35.62 |
Deferred compensation arrangement with individual - requisite service period | Five years |
Deferred compensation arrangement with individual - maximum contractual term | Each option will become fully vested, assuming continued service, on April 15, 2019 and December 16, 2018. |
Term for not granting cash salary or bonus compensation in excess of $ 1.00 per year | 5 years |
Percentage of stock options which would get immediately vested on termination of executive | 100.00% |
Percentage of stock options which would get immediately vested on change of control | 100.00% |
Value of option at the date of grant | $ 11.43 |
Total compensation expense to be recognized per grant | $ 40.0 |
A. Jayson Adair, the Chief Executive Officer |  |
Stock Based Compensation (Textual) |  |
Nonqualified stock options to purchase of shares | 2,000,000 |
Percentage of total aggregate options vested | 20.00% |
Vincent W. Mitz, the President |  |
Stock Based Compensation (Textual) |  |
Nonqualified stock options to purchase of shares | 1,500,000 |
Percentage of total aggregate options vested | 20.00% |

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- Definition Represents the percentage of stock options immediately vested on change of control. + References No definition available. + Details
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- Definition Represents the percentage of stock options immediately vested on termination of executive. + References No definition available. + Details
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- Definition Represents the percentage of stock options exercised as of specified date. + References No definition available. + Details
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- Definition The number of stock options in-the-money as of the balance-sheet date. A stock option is said to be in-the-money when the price of the underlying instrument surpasses the strike price. + References No definition available. + Details
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- Definition Stock option value at the date of grant. + References No definition available. + Details
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- Definition The per share price that the individual must pay to acquire shares under the deferred compensation arrangement. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363 + Details
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- Definition The maximum number of shares authorized for issuance under the deferred compensation arrangement as of the balance sheet date. + 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 (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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