COMMITMENTS AND CONTINGENCIES (Details) - USD ($)	9 Months Ended
	Jan. 31, 2020	Apr. 30, 2019	Jan. 31, 2019
Loss Contingencies [Line Items]
POM maximum per tax return	$ 10,000
Standard guarantee accrual amount	7,000,000.0	$ 9,900,000	$ 7,000,000.0
Contingent business acquisition obligations	11,400,000	11,100,000	11,300,000
Lines of credit, total obligation	40,000,000.0
Remaining franchise equity lines of credit-undrawn commitment	$ 14,200,000
Percentage of participation interest at par	90.00%
Purchased of participation interest, at par	$ 367,800,000
Loss contingency accrual	1,600,000	1,900,000	3,100,000
Estimate of possible loss	57,000,000
SCC
Loss Contingencies [Line Items]
Loss contingency accrual	0	$ 0	0
Axos
Loss Contingencies [Line Items]
Limited guarantee	7,500,000
Loss contingency accrual	$ 1,900,000		$ 1,400,000