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Summary of Restructuring Liability by Segment (Detail) (USD $)
In Thousands, unless otherwise specified
Jan. 31, 2014
Oct. 31, 2013
Apr. 30, 2013
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve $ 3,745 $ 5,571 $ 11,548
Executive Recruitment
      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve 909   3,180
Executive Recruitment | North America
      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve 320   1,577
Executive Recruitment | EMEA
      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve 589   1,534
Executive Recruitment | Asia Pacific
      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve     69
LTC
      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve 2,088   6,453
Futurestep
      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve 748   1,466
Corporate
      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve     449
Severance
      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve 50 584 4,819
Severance | Executive Recruitment
      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve 5   1,596
Severance | Executive Recruitment | North America
      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve 5   918
Severance | Executive Recruitment | EMEA
      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve     678
Severance | LTC
      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve 45   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 3,695 4,987 6,729
Facilities | Executive Recruitment
      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve 904   1,584
Facilities | Executive Recruitment | North America
      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve 315   659
Facilities | Executive Recruitment | EMEA
      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve 589   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 2,043   3,956
Facilities | Futurestep
      
Restructuring Cost and Reserve [Line Items]      
Restructuring Reserve $ 748   $ 1,189