CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect Period of Adoption Adjustment	Common Stock	Retained Earnings	Retained Earnings Cumulative Effect Period of Adoption Adjustment	Accumulated Other Comprehensive Loss, Net	Accumulated Other Comprehensive Loss, Net Cumulative Effect Period of Adoption Adjustment	Total Korn Ferry Stockholders' Equity	Total Korn Ferry Stockholders' Equity Cumulative Effect Period of Adoption Adjustment	Noncontrolling Interest
Beginning Balance at Apr. 30, 2018	$ 1,219,615	$ 6,656	$ 683,942	$ 572,800	$ 8,853	$ (40,135)	$ (2,197)	$ 1,216,607	$ 6,656	$ 3,008
Beginning Balance, Shares at Apr. 30, 2018			56,517
Net income	104,796			102,651				102,651		2,145
Other comprehensive income (loss)	(34,487)					(34,320)		(34,320)		(167)
Dividends paid to shareholders	(23,459)			(23,459)				(23,459)
Dividends paid to noncontrolling interest	(2,255)									(2,255)
Purchase of stock	(58,070)		$ (58,070)					(58,070)
Purchase of stock, shares			(1,166)
Issuance of stock	8,528		$ 8,528					8,528
Issuance of stock (shares)			1,080
Stock-based compensation	22,063		$ 22,063					22,063
Ending Balance at Apr. 30, 2019	1,243,387		$ 656,463	660,845		(76,652)		1,240,656		2,731
Ending Balance, Shares at Apr. 30, 2019			56,431
Net income	107,017			104,946				104,946		2,071
Other comprehensive income (loss)	(30,902)					(30,520)		(30,520)		(382)
Dividends paid to shareholders	(22,798)			(22,798)				(22,798)
Dividends paid to noncontrolling interest	(2,110)									(2,110)
Purchase of stock	(101,439)		$ (101,439)					(101,439)
Purchase of stock, shares			(2,839)
Issuance of stock	9,041		$ 9,041					9,041
Issuance of stock (shares)			858
Stock-based compensation	21,495		$ 21,495					21,495
Ending Balance at Apr. 30, 2020	$ 1,223,691		$ 585,560	742,993		(107,172)		1,221,381		2,310
Ending Balance, Shares at Apr. 30, 2020	54,450		54,450
Net income	$ 115,562			114,454				114,454		1,108
Other comprehensive income (loss)	55,435					55,352		55,352		83
Dividends paid to shareholders	(22,498)			(22,498)				(22,498)
Dividends paid to noncontrolling interest	(1,115)									(1,115)
Purchase of stock	(35,376)		$ (35,376)					(35,376)
Purchase of stock, shares			(1,146)
Issuance of stock	6,560		$ 6,560					6,560
Issuance of stock (shares)			704
Stock-based compensation	26,516		$ 26,516					26,516
Ending Balance at Apr. 30, 2021	$ 1,368,775		$ 583,260	$ 834,949		$ (51,820)		$ 1,366,389		$ 2,386
Ending Balance, Shares at Apr. 30, 2021	54,008		54,008