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Summary of Significant Accounting Policies - Principles of Consolidation (Details) | Apr. 30, 2013 | Apr. 04, 2013
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Accounting Policies [Abstract] |  |
Ownership percentage by parent | 65.00% | 65.00%
Noncontrolling interest ownership percentage by noncontrolling owners | 35.00% | 35.00%

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- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. + References No definition available. + Details
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- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
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