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Restructuring Charges, Net (Schedule Of Restructuring Liability By Segment) (Detail) (USD $) In Thousands, unless otherwise specified | Apr. 30, 2012 | Apr. 30, 2011 | Apr. 30, 2010
--- | --- | --- | ---
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | $ 2,770 | $ 4,921 | $ 13,809
North America [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 43 | 91 |
Europe, Middle East And Africa ("EMEA") [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 1,818 | 3,169 |
Asia Pacific [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve |  | 328 |
South America [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve |  | 114 |
Total Executive Recruitment [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 1,861 | 3,702 |
Futurestep [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 909 | 1,219 |
Severance [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 38 | 978 | 2,714
Severance [Member] | Europe, Middle East And Africa ("EMEA") [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 38 | 857 |
Severance [Member] | South America [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve |  | 114 |
Severance [Member] | Total Executive Recruitment [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 38 | 971 |
Severance [Member] | Futurestep [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve |  | 7 |
Facilities [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 2,732 | 3,943 | 11,095
Facilities [Member] | North America [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 43 | 91 |
Facilities [Member] | Europe, Middle East And Africa ("EMEA") [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 1,780 | 2,312 |
Facilities [Member] | Asia Pacific [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve |  | 328 |
Facilities [Member] | Total Executive Recruitment [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 1,823 | 2,731 |
Facilities [Member] | Futurestep [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | $ 909 | $ 1,212 |

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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 95-3 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140904-122747 + Details
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