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Summary of Restructuring Liability by Segment (Detail) - USD ($) $ in Thousands | Jan. 31, 2016 | Oct. 31, 2015 | Apr. 30, 2015
--- | --- | --- | ---
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | $ 21,320 | $ 665 | $ 1,146
Asia Pacific |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 421 |  |
South America |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 186 |  |
Operating Segments | Executive Recruitment |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 4,913 |  | 473
Operating Segments | Executive Recruitment | North America |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 446 |  | 51
Operating Segments | Executive Recruitment | EMEA |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 3,860 |  | 422
Operating Segments | Hay Group |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 16,152 |  | 378
Operating Segments | Futurestep |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 173 |  | 291
Corporate |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 82 |  | 4
Severance |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 20,262 | 156 | 375
Severance | Asia Pacific |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 421 |  |
Severance | South America |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 186 |  |
Severance | Operating Segments | Executive Recruitment |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 4,698 |  | 261
Severance | Operating Segments | Executive Recruitment | North America |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 427 |  | 51
Severance | Operating Segments | Executive Recruitment | EMEA |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 3,664 |  | 210
Severance | Operating Segments | Hay Group |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 15,431 |  | 58
Severance | Operating Segments | Futurestep |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 51 |  | 52
Severance | Corporate |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 82 |  | 4
Facilities |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 1,058 | $ 509 | 771
Facilities | Operating Segments | Executive Recruitment |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 215 |  | 212
Facilities | Operating Segments | Executive Recruitment | North America |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 19 |  |
Facilities | Operating Segments | Executive Recruitment | EMEA |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 196 |  | 212
Facilities | Operating Segments | Hay Group |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 721 |  | 320
Facilities | Operating Segments | Futurestep |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | $ 122 |  | $ 239

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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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