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Property And Equipment (Components Of Property And Equipment) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Apr. 30, 2014 | Apr. 30, 2013
Property, Plant and Equipment [Line Items] |  |
Document Fiscal Year Focus | 2014 |
Property and equipment net | $ 304,911 | $ 267,880
Buildings |  |
Property, Plant and Equipment [Line Items] |  |
Property and equipment net | 100,034 | 108,265
Computers And Other Equipment |  |
Property, Plant and Equipment [Line Items] |  |
Property and equipment net | 139,290 | 112,203
Leasehold Improvements |  |
Property, Plant and Equipment [Line Items] |  |
Property and equipment net | 51,197 | 38,771
Software [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property and equipment net | 9,997 | 4,660
Land And Other Non-Depreciable Assets |  |
Property, Plant and Equipment [Line Items] |  |
Property and equipment net | 1,866 | 1,887
Construction In Process |  |
Property, Plant and Equipment [Line Items] |  |
Property and equipment net | $ 2,527 | $ 2,094

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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 + Details
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