Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets - Changes in Carrying Value of Goodwill By Reportable Segment (Detail)

v3.19.2
Goodwill and Intangible Assets - Changes in Carrying Value of Goodwill By Reportable Segment (Detail) - USD ($)
$ in Thousands
12 Months Ended
Apr. 30, 2019
Apr. 30, 2018
Goodwill [Line Items]    
Goodwill, Beginning Balance [1] $ 584,222 $ 576,865
Exchange rate fluctuations (5,924) 7,357
Goodwill, Ending Balance [1] 578,298 584,222
Operating Segments | Executive Search    
Goodwill [Line Items]    
Goodwill, Beginning Balance [1] 96,230 92,149
Exchange rate fluctuations (3,207) 4,081
Goodwill, Ending Balance [1] 93,023 96,230
Operating Segments | Executive Search | North America    
Goodwill [Line Items]    
Goodwill, Beginning Balance [1] 47,757 46,201
Exchange rate fluctuations (1,186) 1,556
Goodwill, Ending Balance [1] 46,571 47,757
Operating Segments | Executive Search | EMEA    
Goodwill [Line Items]    
Goodwill, Beginning Balance [1] 47,501 44,976
Exchange rate fluctuations (2,021) 2,525
Goodwill, Ending Balance [1] 45,480 47,501
Operating Segments | Executive Search | Asia Pacific    
Goodwill [Line Items]    
Goodwill, Beginning Balance [1] 972 972
Goodwill, Ending Balance [1] 972 972
Operating Segments | Advisory    
Goodwill [Line Items]    
Goodwill, Beginning Balance [1] 458,169 457,241
Exchange rate fluctuations (808) 928
Goodwill, Ending Balance [1] 457,361 458,169
Operating Segments | RPO & Professional Search    
Goodwill [Line Items]    
Goodwill, Beginning Balance 29,823 27,475
Exchange rate fluctuations (1,909) 2,348
Goodwill, Ending Balance $ 27,914 $ 29,823
[1] As of the end of the fiscal year.