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REVENUE RECOGNITION: Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Jun. 30, 2018
Revenue from Contract with Customer [Abstract]          
Allowance for doubtful accounts $ 2,000   $ 2,000   $ 1,200
Disaggregation of Revenue [Line Items]          
Revenues 274,671 $ 313,849 562,506 $ 629,313  
Gift Cards          
Disaggregation of Revenue [Line Items]          
Revenues 1,100 1,300 2,200 2,700  
Franchise Fees          
Disaggregation of Revenue [Line Items]          
Revenues $ 800 $ 700 $ 1,700 $ 1,300