CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 104,796	$ 135,897	$ 87,238
Other comprehensive (loss) income:
Foreign currency translation adjustments	(28,038)	22,900	(19,266)
Deferred compensation and pension plan adjustments, net of tax	(5,369)	6,054	6,445
Net unrealized (loss) gain on interest rate swap, net of tax	(1,080)	1,915	(578)
Comprehensive income	70,309	166,766	73,839
Less: comprehensive income attributable to noncontrolling interest	(1,978)	(2,058)	(2,811)
Comprehensive income attributable to Korn Ferry	$ 68,331	$ 164,708	$ 71,028