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Tax Receivable Agreement Liability (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Mar. 31, 2016
Jun. 30, 2015
Jun. 30, 2014
Tax Receivable Agreement [Line Items]      
Deferred Tax Assets, Investment in Subsidiaries $ 111,070    
Tax receivable agreement, percentage of realized cash saving in tax to pass through 85.00%    
Tax Receivable Agreement [Roll Forward]      
Beginning balance $ 93,501    
Payments under tax receivable agreement 0 $ 0  
Payable Pursuant To Tax Receivable Agreement 96,588 96,470 $ 13,636
Less current portion under tax receivable agreement (2,969) (2,969)  
Ending balance 93,619 93,501  
Follow-On Offering [Member]      
Tax Receivable Agreement [Roll Forward]      
Additions to tax receivable agreement: 0 34,028  
Tender Offer [Member]      
Tax Receivable Agreement [Roll Forward]      
Additions to tax receivable agreement: 0 23,969  
Secondary Offering [Member]      
Tax Receivable Agreement [Roll Forward]      
Additions to tax receivable agreement: 0 24,837  
Exchange of LLC Units for Class A Shares [Member]      
Tax Receivable Agreement [Roll Forward]      
Additions to tax receivable agreement: $ 118 $ 0