Annual report pursuant to Section 13 and 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
12 Months Ended
Apr. 30, 2022
Apr. 30, 2021
Apr. 30, 2020
Earnings Per Share Disclosure [Line Items]      
Net income attributable to Korn Ferry $ 326,360 $ 114,454 $ 104,946
Less: distributed and undistributed earnings to nonvested restricted stockholders 7,343 2,763 1,140
Basic net earnings attributable to common stockholders 319,017 111,691 103,806
Add: undistributed earnings to nonvested restricted stockholders 6,750 2,185 901
Less: reallocation of undistributed earnings to nonvested restricted stockholders 6,676 2,165 894
Diluted net earnings attributable to common stockholders $ 319,091 $ 111,711 $ 103,813
Basic weighted-average number of common shares outstanding 52,807 52,928 54,342
Diluted weighted-average number of common shares outstanding 53,401 53,405 54,767
Basic earnings per share $ 6.04 $ 2.11 $ 1.91
Diluted earnings per share $ 5.98 $ 2.09 $ 1.90
ESPP      
Earnings Per Share Disclosure [Line Items]      
Effect of dilutive securities 14 1 58
Restricted Stock      
Earnings Per Share Disclosure [Line Items]      
Effect of dilutive securities 580 476 367