CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive (Loss) Income, Net	Total Korn Ferry Stockholders' Equity	Noncontrolling Interest
Beginning Balance at Apr. 30, 2018	$ 1,219,615	$ 683,942	$ 572,800	$ (40,135)	$ 1,216,607	$ 3,008
Beginning Balance, Shares at Apr. 30, 2018		56,517
Net (loss) income	(38,592)		(38,611)		(38,611)	19
Other comprehensive (loss) income	(14,150)			(14,156)	(14,156)	6
Effect of adopting new accounting standards	6,656		8,853	(2,197)	6,656
Dividends paid to shareholders	(6,027)		(6,027)		(6,027)
Purchase of stock	(13,054)	$ (13,054)			(13,054)
Purchase of stock, shares		(200)
Issuance of stock	4,803	$ 4,803			4,803
Issuance of stock (shares)		621
Stock-based compensation	5,369	$ 5,369			5,369
Ending Balance at Jul. 31, 2018	1,164,620	$ 681,060	537,015	(56,488)	1,161,587	3,033
Ending Balance, Shares at Jul. 31, 2018		56,938
Beginning Balance at Apr. 30, 2018	1,219,615	$ 683,942	572,800	(40,135)	1,216,607	3,008
Beginning Balance, Shares at Apr. 30, 2018		56,517
Net (loss) income	8,725
Ending Balance at Oct. 31, 2018	1,176,597	$ 664,486	577,333	(68,581)	1,173,238	3,359
Ending Balance, Shares at Oct. 31, 2018		56,511
Beginning Balance at Jul. 31, 2018	1,164,620	$ 681,060	537,015	(56,488)	1,161,587	3,033
Beginning Balance, Shares at Jul. 31, 2018		56,938
Net (loss) income	47,317		46,034		46,034	1,283
Other comprehensive (loss) income	(12,360)			(12,093)	(12,093)	(267)
Dividends paid to shareholders	(5,716)		(5,716)		(5,716)
Dividends paid to noncontrolling interest	(690)					(690)
Purchase of stock	(22,875)	$ (22,875)			(22,875)
Purchase of stock, shares		(459)
Issuance of stock (shares)		32
Stock-based compensation	6,301	$ 6,301			6,301
Ending Balance at Oct. 31, 2018	1,176,597	$ 664,486	577,333	(68,581)	1,173,238	3,359
Ending Balance, Shares at Oct. 31, 2018		56,511
Beginning Balance at Apr. 30, 2019	$ 1,243,387	$ 656,463	660,845	(76,652)	1,240,656	2,731
Beginning Balance, Shares at Apr. 30, 2019	56,431	56,431
Net (loss) income	$ 43,650		42,951		42,951	699
Other comprehensive (loss) income	(5,398)			(5,462)	(5,462)	64
Dividends paid to shareholders	(6,081)		(6,081)		(6,081)
Purchase of stock	(21,329)	$ (21,329)			(21,329)
Purchase of stock, shares		(546)
Issuance of stock	5,074	$ 5,074			5,074
Issuance of stock (shares)		711
Stock-based compensation	5,091	$ 5,091			5,091
Ending Balance at Jul. 31, 2019	1,264,394	$ 645,299	697,715	(82,114)	1,260,900	3,494
Ending Balance, Shares at Jul. 31, 2019		56,596
Beginning Balance at Apr. 30, 2019	$ 1,243,387	$ 656,463	660,845	(76,652)	1,240,656	2,731
Beginning Balance, Shares at Apr. 30, 2019	56,431	56,431
Net (loss) income	$ 86,682
Ending Balance at Oct. 31, 2019	$ 1,258,491	$ 601,686	734,891	(80,646)	1,255,931	2,560
Ending Balance, Shares at Oct. 31, 2019	55,315	55,315
Beginning Balance at Jul. 31, 2019	$ 1,264,394	$ 645,299	697,715	(82,114)	1,260,900	3,494
Beginning Balance, Shares at Jul. 31, 2019		56,596
Net (loss) income	43,032		42,804		42,804	228
Other comprehensive (loss) income	1,352			1,468	1,468	(116)
Dividends paid to shareholders	(5,628)		(5,628)		(5,628)
Dividends paid to noncontrolling interest	(1,046)					(1,046)
Purchase of stock	(49,325)	$ (49,325)			(49,325)
Purchase of stock, shares		(1,313)
Issuance of stock (shares)		32
Stock-based compensation	5,712	$ 5,712			5,712
Ending Balance at Oct. 31, 2019	$ 1,258,491	$ 601,686	$ 734,891	$ (80,646)	$ 1,255,931	$ 2,560
Ending Balance, Shares at Oct. 31, 2019	55,315	55,315