CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 43,032	$ 47,317	$ 86,682	$ 8,725
Other comprehensive income (loss):
Foreign currency translation adjustments	1,213	(12,778)	(4,085)	(27,334)
Deferred compensation and pension plan adjustments, net of tax	495	273	990	546
Net unrealized (loss) gain on interest rate swap, net of tax	(356)	145	(951)	278
Comprehensive income (loss)	44,384	34,957	82,636	(17,785)
Less: comprehensive income attributable to noncontrolling interest	(112)	(1,016)	(875)	(1,041)
Comprehensive income (loss) attributable to Korn Ferry	$ 44,272	$ 33,941	$ 81,761	$ (18,826)