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Summary of Restructuring Liability by Segment (Detail) (USD $) In Thousands, unless otherwise specified | Apr. 30, 2014 | Apr. 30, 2013 | Apr. 30, 2012
--- | --- | --- | ---
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | $ 2,813 | $ 11,548 | $ 2,770
Executive Recruitment |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 572 | 3,180 |
Executive Recruitment | North America |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 193 | 1,577 |
Executive Recruitment | EMEA |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 379 | 1,534 |
Executive Recruitment | Asia Pacific |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve |  | 69 |
LTC |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 1,587 | 6,453 |
Futurestep |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 654 | 1,466 |
Corporate |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve |  | 449 |
Severance |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve |  | 4,819 | 38
Severance | Executive Recruitment |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve |  | 1,596 |
Severance | Executive Recruitment | North America |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve |  | 918 |
Severance | Executive Recruitment | EMEA |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve |  | 678 |
Severance | LTC |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve |  | 2,497 |
Severance | Futurestep |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve |  | 277 |
Severance | Corporate |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve |  | 449 |
Facilities |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 2,813 | 6,729 | 2,732
Facilities | Executive Recruitment |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 572 | 1,584 |
Facilities | Executive Recruitment | North America |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 193 | 659 |
Facilities | Executive Recruitment | EMEA |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 379 | 856 |
Facilities | Executive Recruitment | Asia Pacific |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve |  | 69 |
Facilities | LTC |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 1,587 | 3,956 |
Facilities | Futurestep |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | $ 654 | $ 1,189 |

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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 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=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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