CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 115,562	$ 107,017	$ 104,796
Other comprehensive income:
Foreign currency translation adjustments	50,069	(23,764)	(28,038)
Deferred compensation and pension plan adjustments, net of tax	5,419	(6,716)	(5,369)
Net unrealized (loss) gain on marketable securities, net of tax	(53)	34
Net unrealized loss on interest rate swap, net of tax		(456)	(1,080)
Comprehensive income	170,997	76,115	70,309
Less: comprehensive income attributable to noncontrolling interest	(1,191)	(1,689)	(1,978)
Comprehensive income attributable to Korn Ferry	$ 169,806	$ 74,426	$ 68,331