Basis of Presentation and Summary of Critical Accounting Policies (Policies)	9 Months Ended
Jan. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Recently Issued Accounting Pronouncements	Recent Accounting Pronouncements In January 2015, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2015-01, Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items. ASU 2015-01 eliminates the requirement that an entity separately classify, present, and disclose extraordinary events and transactions. The new guidance is effective for us beginning in our third quarter of fiscal 2016 and applies prospectively as of the date of adoption. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In April 2014, the FASB issued ASU 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity. ASU 2014-08 changes the criteria for determining which disposals should be presented as discontinued operations and modifies the related disclosure requirements. Additionally, the new guidance requires a business that qualifies as held for sale upon acquisition should be reported as discontinued operations. The new guidance is effective for us beginning in fiscal 2016 and applies prospectively to new disposals and new classifications of disposal groups as held for sale after the effective date. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, as a new topic, Accounting Standards Codification ("ASC") 606. The new revenue recognition standard provides a five-step analysis of transactions to determine when and how revenue is recognized. The core principle of the guidance is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The new standard will also result in enhanced disclosures about revenue, provide guidance for transactions that were not previously addressed comprehensively, and improve guidance for multiple-element arrangements. ASU 2014-09 is effective for us beginning in fiscal 2018 and can be adopted either retrospectively or as a cumulative-effect adjustment as of the date of adoption. We are currently evaluating the effect that adopting this new accounting guidance will have on our consolidated results of operations, cash flows, and financial position.

Recent Accounting Pronouncements

In January 2015, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2015-01, Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items. ASU 2015-01 eliminates the requirement that an entity separately classify, present, and disclose extraordinary events and transactions. The new guidance is effective for us beginning in our third quarter of fiscal 2016 and applies prospectively as of the date of adoption. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements.

In April 2014, the FASB issued ASU 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity. ASU 2014-08 changes the criteria for determining which disposals should be presented as discontinued operations and modifies the related disclosure requirements. Additionally, the new guidance requires a business that qualifies as held for sale upon acquisition should be reported as discontinued operations. The new guidance is effective for us beginning in fiscal 2016 and applies prospectively to new disposals and new classifications of disposal groups as held for sale after the effective date. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, as a new topic, Accounting Standards Codification ("ASC") 606. The new revenue recognition standard provides a five-step analysis of transactions to determine when and how revenue is recognized. The core principle of the guidance is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The new standard will also result in enhanced disclosures about revenue, provide guidance for transactions that were not previously addressed comprehensively, and improve guidance for multiple-element arrangements. ASU 2014-09 is effective for us beginning in fiscal 2018 and can be adopted either retrospectively or as a cumulative-effect adjustment as of the date of adoption. We are currently evaluating the effect that adopting this new accounting guidance will have on our consolidated results of operations, cash flows, and financial position.