REVENUE RECOGNITION (Disaggregation of Revenue by Major Service Line) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2020	Oct. 31, 2019
Disaggregation of Revenue [Line Items]
Total revenues	$ 176,550	$ 160,801	$ 777,580	$ 311,163
U.S. assisted tax preparation
Disaggregation of Revenue [Line Items]
Total revenues	48,922	41,226	386,650	74,218
U.S. royalties
Disaggregation of Revenue [Line Items]
Total revenues	7,576	7,820	43,525	14,679
U.S. DIY tax preparation
Disaggregation of Revenue [Line Items]
Total revenues	5,055	4,541	72,650	7,951
International
Disaggregation of Revenue [Line Items]
Total revenues	48,858	44,926	116,676	85,507
Refund Transfers
Disaggregation of Revenue [Line Items]
Total revenues	1,192	791	11,745	2,300
Emerald Card®
Disaggregation of Revenue [Line Items]
Total revenues	9,795	8,616	26,850	22,471
Peace of Mind® Extended Service Plan
Disaggregation of Revenue [Line Items]
Total revenues	24,775	25,660	56,770	58,497
Tax Identity Shield®
Disaggregation of Revenue [Line Items]
Total revenues	4,835	4,648	14,202	9,170
Interest and fee income on Emerald AdvanceTM
Disaggregation of Revenue [Line Items]
Total revenues	501	485	1,164	1,039
Wave
Disaggregation of Revenue [Line Items]
Total revenues	14,327	10,902	26,394	14,527
Other
Disaggregation of Revenue [Line Items]
Total revenues	$ 10,714	$ 11,186	$ 20,954	$ 20,804