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Non-controlling Interest - Narrative (Details) - USD ($)
$ in Thousands
 9 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Jun. 30, 2020
Non-controlling Interest in LLC      
Noncontrolling Interest [Line Items]      
Tax distributions payable to non-controlling LLC Unit holders $ 710   $ 104
Tax distributions paid to non-controlling LLC Unit holders $ 1,048 $ 1,415  
Class A Common Stock      
Noncontrolling Interest [Line Items]      
Issuance LLC Units (in shares) 257,715    
Treasury Stock, Common      
Noncontrolling Interest [Line Items]      
Treasury stock, shares, retired (in shares) 9,665