Revenue Recognition (Disaggregation of Revenue by Major Service Line) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2019	Jul. 31, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 150,362	$ 145,183
U.S. assisted tax preparation
Disaggregation of Revenue [Line Items]
Revenues	32,992	31,104
U.S. royalties
Disaggregation of Revenue [Line Items]
Revenues	6,859	7,571
U.S. DIY tax preparation
Disaggregation of Revenue [Line Items]
Revenues	3,410	2,781
International
Disaggregation of Revenue [Line Items]
Revenues	40,581	39,179
Refund Transfers
Disaggregation of Revenue [Line Items]
Revenues	1,509	1,424
Emerald Card®
Disaggregation of Revenue [Line Items]
Revenues	13,855	14,246
Peace of Mind® Extended Service Plan
Disaggregation of Revenue [Line Items]
Revenues	32,837	36,577
Tax Identity Shield®
Disaggregation of Revenue [Line Items]
Revenues	4,522	4,741
Interest and fee income on Emerald AdvanceTM
Disaggregation of Revenue [Line Items]
Revenues	554	447
Wave
Disaggregation of Revenue [Line Items]
Revenues	3,625	0
Other
Disaggregation of Revenue [Line Items]
Revenues	$ 9,618	$ 7,113