CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2021	Jan. 31, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 51,588	$ 20,956	$ 48,811	$ 107,638
Other comprehensive income:
Foreign currency translation adjustments	25,071	497	47,374	(3,588)
Deferred compensation and pension plan adjustments, net of tax	663	943	1,988	1,933
Net unrealized loss on marketable securities, net of tax	(5)	(5)	(39)	(5)
Net unrealized gain (loss) on interest rate swap, net of tax		495		(456)
Comprehensive income	77,317	22,886	98,134	105,522
Less: comprehensive income attributable to noncontrolling interest	(257)	(1,057)	(612)	(1,932)
Comprehensive income attributable to Korn Ferry	$ 77,060	$ 21,829	$ 97,522	$ 103,590