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 International Stockholders' Equity	Noncontrolling Interest
Beginning Balance, Shares at Apr. 30, 2015		50,573
Beginning Balance at Apr. 30, 2015	$ 815,249	$ 463,839	$ 392,033	$ (40,623)	$ 815,249
Acquisition of noncontrolling interest in Mexico	1,489					$ 1,489
Comprehensive income	14,137		30,913	(17,288)	13,625	512
Dividends paid to shareholders	(21,833)		(21,833)		(21,833)
Purchase of stock, shares		(215)
Purchase of stock	(7,410)	$ (7,410)			(7,410)
Issuance of stock	222,456	$ 222,456			222,456
Issuance of stock (shares)		6,914
Stock-based compensation	18,305	$ 18,305			18,305
Tax benefit from exercise of stock options and vesting of restricted stock	4,908	$ 4,908			4,908
Ending Balance, Shares at Apr. 30, 2016		57,272
Ending Balance at Apr. 30, 2016	1,047,301	$ 702,098	401,113	(57,911)	1,045,300	2,001
Comprehensive income	73,839		84,181	(13,153)	71,028	2,811
Dividends paid to shareholders	(23,318)		(23,318)		(23,318)
Dividends paid to noncontrolling interest	(1,203)					(1,203)
Purchase of stock, shares		(1,346)
Purchase of stock	(33,579)	$ (33,579)			(33,579)
Issuance of stock	5,886	$ 5,886			5,886
Issuance of stock (shares)		1,012
Stock-based compensation	18,045	$ 18,045			18,045
Tax benefit from exercise of stock options and vesting of restricted stock	$ 77	$ 77			77
Ending Balance, Shares at Apr. 30, 2017	56,938	56,938
Ending Balance at Apr. 30, 2017	$ 1,087,048	$ 692,527	461,976	(71,064)	1,083,439	3,609
Comprehensive income	166,766		133,779	30,929	164,708	2,058
Dividends paid to shareholders	(22,955)		(22,955)		(22,955)
Dividends paid to noncontrolling interest	(2,659)					(2,659)
Purchase of stock, shares		(1,092)
Purchase of stock	(36,865)	$ (36,865)			(36,865)
Issuance of stock	7,998	$ 7,998			7,998
Issuance of stock (shares)		671
Stock-based compensation	$ 20,282	$ 20,282			20,282
Ending Balance, Shares at Apr. 30, 2018	56,517	56,517
Ending Balance at Apr. 30, 2018	$ 1,219,615	$ 683,942	$ 572,800	$ (40,135)	$ 1,216,607	$ 3,008