CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive (Loss) Income, Net	Total Korn/Ferry International Stockholders' Equity	Noncontrolling Interest
Beginning Balance at Apr. 30, 2017	$ 1,087,048	$ 692,527	$ 461,976	$ (71,064)	$ 1,083,439	$ 3,609
Beginning Balance, Shares at Apr. 30, 2017		56,938,000
Net (loss) income	29,429		29,041		29,041	388
Other Comprehensive (loss) income	16,478			16,373	16,373	105
Dividends paid to shareholders	(5,823)		(5,823)		(5,823)
Purchase of stock	(7,372)	$ (7,372)			(7,372)
Purchase of stock, shares		(217,000)
Issuance of stock	4,586	$ 4,586			4,586
Issuance of stock (shares)		525,000
Stock-based compensation	4,405	$ 4,405			4,405
Ending Balance at Jul. 31, 2017	1,128,751	$ 694,146	485,194	(54,691)	1,124,649	4,102
Ending Balance, Shares at Jul. 31, 2017		57,246,000
Beginning Balance at Apr. 30, 2017	1,087,048	$ 692,527	461,976	(71,064)	1,083,439	3,609
Beginning Balance, Shares at Apr. 30, 2017		56,938,000
Net (loss) income	66,161
Ending Balance at Oct. 31, 2017	1,134,723	$ 674,105	515,811	(57,902)	1,132,014	2,709
Ending Balance, Shares at Oct. 31, 2017		56,511,000
Beginning Balance at Jul. 31, 2017	1,128,751	$ 694,146	485,194	(54,691)	1,124,649	4,102
Beginning Balance, Shares at Jul. 31, 2017		57,246,000
Net (loss) income	36,732		36,331		36,331	401
Other Comprehensive (loss) income	(3,447)			(3,211)	(3,211)	(236)
Dividends paid to shareholders	(5,714)		(5,714)		(5,714)
Dividends paid to noncontrolling interest	(1,558)					(1,558)
Purchase of stock	(25,350)	$ (25,350)			(25,350)
Purchase of stock, shares		(777,000)
Issuance of stock (shares)		42,000
Stock-based compensation	5,309	$ 5,309			5,309
Ending Balance at Oct. 31, 2017	1,134,723	$ 674,105	515,811	(57,902)	1,132,014	2,709
Ending Balance, Shares at Oct. 31, 2017		56,511,000
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	56,517,000	56,517,000
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		(200,000)
Issuance of stock	4,803	$ 4,803			4,803
Issuance of stock (shares)		621,000
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		56,938,000
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	56,517,000	56,517,000
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	56,511,000	56,511,000
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		56,938,000
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		(459,000)
Issuance of stock (shares)		32,000
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	56,511,000	56,511,000