CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2019	Jan. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 45,444	$ 27,427	$ 54,169	$ 93,588
Other comprehensive income (loss):
Foreign currency translation adjustments	6,089	17,839	(21,245)	29,773
Deferred compensation and pension plan adjustments, net of tax	273	361	819	1,065
Net unrealized (loss) gain on interest rate swap, net of tax	(980)	1,077	(702)	1,470
Comprehensive income	50,826	46,704	33,041	125,896
Less: comprehensive income attributable to noncontrolling interest	(552)	(226)	(1,593)	(884)
Comprehensive income attributable to Korn Ferry	$ 50,274	$ 46,478	$ 31,448	$ 125,012