CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2015	Jan. 31, 2014
Fee revenue	$ 249,545us-gaap_SalesRevenueServicesNet	$ 242,184us-gaap_SalesRevenueServicesNet	$ 756,435us-gaap_SalesRevenueServicesNet	$ 708,589us-gaap_SalesRevenueServicesNet
Reimbursed out-of-pocket engagement expenses	9,326us-gaap_ReimbursementRevenue	8,753us-gaap_ReimbursementRevenue	27,478us-gaap_ReimbursementRevenue	26,172us-gaap_ReimbursementRevenue
Total revenue	258,871us-gaap_Revenues	250,937us-gaap_Revenues	783,913us-gaap_Revenues	734,761us-gaap_Revenues
Compensation and benefits	164,802us-gaap_LaborAndRelatedExpense	162,228us-gaap_LaborAndRelatedExpense	508,564us-gaap_LaborAndRelatedExpense	476,294us-gaap_LaborAndRelatedExpense
General and administrative expenses	36,767us-gaap_GeneralAndAdministrativeExpense	37,265us-gaap_GeneralAndAdministrativeExpense	104,280us-gaap_GeneralAndAdministrativeExpense	112,931us-gaap_GeneralAndAdministrativeExpense
Reimbursed expenses	9,326us-gaap_CostOfReimbursableExpense	8,753us-gaap_CostOfReimbursableExpense	27,478us-gaap_CostOfReimbursableExpense	26,172us-gaap_CostOfReimbursableExpense
Cost of services	8,653us-gaap_CostOfServices	9,056us-gaap_CostOfServices	27,824us-gaap_CostOfServices	29,697us-gaap_CostOfServices
Depreciation and amortization	6,814	6,333	20,363	18,857
Restructuring charges (recoveries), net	(418)kfy_RestructuringIncomeExpenseNet		9,468kfy_RestructuringIncomeExpenseNet	3,682kfy_RestructuringIncomeExpenseNet
Total operating expenses	225,944us-gaap_OperatingExpenses	223,635us-gaap_OperatingExpenses	697,977us-gaap_OperatingExpenses	667,633us-gaap_OperatingExpenses
Operating income	32,927us-gaap_OperatingIncomeLoss	27,302us-gaap_OperatingIncomeLoss	85,936us-gaap_OperatingIncomeLoss	67,128us-gaap_OperatingIncomeLoss
Other (loss) income, net	(1,478)us-gaap_NonoperatingIncomeExpense	1,132us-gaap_NonoperatingIncomeExpense	3,061us-gaap_NonoperatingIncomeExpense	7,751us-gaap_NonoperatingIncomeExpense
Interest income (expense), net	288	(873)	(1,426)	(2,102)
Income before provision for income taxes and equity in earnings of unconsolidated subsidiaries	31,737	27,561	87,571	72,777
Equity in earnings of unconsolidated subsidiaries	778	470	1,696	1,492
Income tax provision	9,576us-gaap_IncomeTaxExpenseBenefit	6,727us-gaap_IncomeTaxExpenseBenefit	26,392us-gaap_IncomeTaxExpenseBenefit	22,789us-gaap_IncomeTaxExpenseBenefit
Net income	$ 22,939us-gaap_NetIncomeLoss	$ 21,304us-gaap_NetIncomeLoss	$ 62,875us-gaap_NetIncomeLoss	$ 51,480us-gaap_NetIncomeLoss
Earnings per common share:
Basic	$ 0.46us-gaap_EarningsPerShareBasic	$ 0.44us-gaap_EarningsPerShareBasic	$ 1.27us-gaap_EarningsPerShareBasic	$ 1.07us-gaap_EarningsPerShareBasic
Diluted	$ 0.46us-gaap_EarningsPerShareDiluted	$ 0.43us-gaap_EarningsPerShareDiluted	$ 1.25us-gaap_EarningsPerShareDiluted	$ 1.05us-gaap_EarningsPerShareDiluted
Weighted-average common shares outstanding:
Basic	49,135	48,341	48,973	48,041
Diluted	49,724	49,181	49,663	48,977

Amount of expenses (income) associated with exit or disposal activities pursuant to an authorized plan.

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