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)

v3.19.2
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 12 Months Ended
Apr. 30, 2019
Jan. 31, 2019
Oct. 31, 2018
Jul. 31, 2018
Apr. 30, 2018
Jan. 31, 2018
Oct. 31, 2017
Jul. 31, 2017
Apr. 30, 2019
Apr. 30, 2018
Apr. 30, 2017
Earnings Per Share Disclosure [Line Items]                      
Net income attributable to Korn Ferry $ 50,264 $ 44,964 $ 46,034 $ (38,611) $ 41,160 $ 27,247 $ 36,331 $ 29,041 $ 102,651 $ 133,779 $ 84,181
Less: distributed and undistributed earnings to nonvested restricted stockholders                 1,066 1,426 765
Basic net earnings attributable to common stockholders                 101,585 132,353 83,416
Add: undistributed earnings to nonvested restricted stockholders                 831 1,187 560
Less: reallocation of undistributed earnings to nonvested restricted stockholders                 820 1,169 553
Diluted net earnings attributable to common stockholders                 $ 101,596 $ 132,371 $ 83,423
Basic weighted-average number of common shares outstanding                 55,311 55,426 56,205
Diluted weighted-average number of common shares outstanding                 56,096 56,254 56,900
Basic earnings per share $ 0.90 $ 0.81 $ 0.82 $ (0.70) $ 0.74 $ 0.49 $ 0.65 $ 0.52 $ 1.84 $ 2.39 $ 1.48
Diluted earnings per share $ 0.89 $ 0.80 $ 0.81 $ (0.70) $ 0.73 $ 0.48 $ 0.64 $ 0.51 $ 1.81 $ 2.35 $ 1.47
ESPP                      
Earnings Per Share Disclosure [Line Items]                      
Effect of dilutive securities                 34 5 24
Restricted Stock                      
Earnings Per Share Disclosure [Line Items]                      
Effect of dilutive securities                 750 822 646
Stock Options                      
Earnings Per Share Disclosure [Line Items]                      
Effect of dilutive securities                 1 1 25