REVENUE RECOGNITION: Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Allowance for doubtful accounts	$ 2.6		$ 2.6		$ 2.0
Gift Cards
Disaggregation of Revenue [Line Items]
Revenues	0.8	$ 1.8	2.3	$ 4.0
Franchise Fees
Disaggregation of Revenue [Line Items]
Revenues	$ 1.4	$ 0.9	$ 3.8	$ 2.6