BASIS OF PRESENTATION OF UNAUDITED INTERIM CONDENSED CONSOLIDATED FINANCIAL STATEMENTS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: Goodwill (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)	Jun. 30, 2019 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Franchise rental income	$ 33,630	$ 65,054
Goodwill	$ 293,019	$ 293,019	$ 345,718
Headroom Percent
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.20	0.20
Franchise
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Goodwill	$ 228,100	$ 228,100	227,900
Company-owned
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Goodwill	$ 65,000	$ 65,000	$ 117,800