Commitments And Contingencies (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Apr. 30, 2016	Apr. 30, 2015
Commitments And Contingencies [Line Items]
Standard guarantee accrual amount	$ 5,700	$ 6,200	$ 7,000
Contingent business acquisition obligations	9,332		8,657
Lines of credit, total obligation	53,600
Remaining franchise equity lines of credit-undrawn commitment	17,600
Amounts deferred for new extended service plans issued	28,391	30,564
Deferred Revenue, Revenue Recognized	(80,651)	(75,009)
Deferred Revenue	$ 152,082	145,334	204,342	$ 189,779
Percentage of participation interest required to be purchased at par	90.00%
Loss Contingency Accrual	$ 1,700	6,200	$ 2,300
Level 3
Commitments And Contingencies [Line Items]
Contingent business acquisition obligations		$ 13,903
Refund Advance [Member]
Commitments And Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	73,000
Loss Contingency Accrual	600
H&R Block Emerald Advance® lines of credit
Commitments And Contingencies [Line Items]
Commitments to Extend Credit, Total	$ 349,900