GOODWILL AND INTANGIBLE ASSETS (Intangible Assets Acquired) (Details) $ in Thousands	9 Months Ended
	Jan. 31, 2020 USD ($)
Business Acquisition [Line Items]
Amount	$ 45,320
Weighted-Average Life (in years)	4 years
Reacquired franchise rights
Business Acquisition [Line Items]
Amount	$ 13,940
Weighted-Average Life (in years)	5 years
Customer relationships
Business Acquisition [Line Items]
Amount	$ 18,079
Weighted-Average Life (in years)	5 years
Internally-developed software
Business Acquisition [Line Items]
Amount	$ 12,659
Weighted-Average Life (in years)	3 years
Noncompete agreements
Business Acquisition [Line Items]
Amount	$ 642
Weighted-Average Life (in years)	5 years