Quarterly report pursuant to Section 13 or 15(d)

Basic and Diluted Earnings Per Share - Basic and Diluted Earnings per Common Share Attributable to Common Stockholders (Detail)

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Basic and Diluted Earnings Per Share - Basic and Diluted Earnings per Common Share Attributable to Common Stockholders (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Jul. 31, 2022
Jul. 31, 2021
Earnings Per Share Disclosure [Line Items]    
Net income attributable to Korn Ferry $ 77,247 $ 74,823
Less: distributed and undistributed earnings to nonvested restricted stockholders 1,645 1,897
Basic net earnings attributable to common stockholders 75,602 72,926
Add: undistributed earnings to nonvested restricted stockholders 1,474 1,725
Less: reallocation of undistributed earnings to nonvested restricted stockholders 1,465 1,707
Diluted net earnings attributable to common stockholders $ 75,611 $ 72,944
Basic weighted-average number of common shares outstanding 51,771 52,760
Diluted weighted-average number of common shares outstanding 52,106 53,320
Basic earnings per share $ 1.46 $ 1.38
Diluted earnings per share $ 1.45 $ 1.37
ESPP    
Earnings Per Share Disclosure [Line Items]    
Effect of dilutive securities   2
Restricted Stock    
Earnings Per Share Disclosure [Line Items]    
Effect of dilutive securities 335 558