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Income Taxes Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2015
Business Acquisition [Line Items]      
Deferred tax liabilities $ 552 $ 685  
Deferred Tax Assets, Investment in Subsidiaries 109,375    
Deferred tax assets 107,088 115,594  
Payable pursuant to tax receivable agreement, less current portion 77,959 89,561  
Other $ 51 99  
Tax receivable agreement, percentage of realized cash saving in tax to be pass through 85.00%    
Establishment of deferred tax assets from step-up in tax basis $ 1,238 140 $ 106,977
Payable pursuant to tax receivable agreement, current portion 4,332 4,189  
Valuation allowance 10,324 $ 9,700  
Undistributed earnings of foreign subsidiaries 2,641    
Adjustments for New Accounting Principle, Early Adoption [Member]      
Business Acquisition [Line Items]      
Deferred Tax Assets, Gross, Noncurrent 629    
Deferred tax assets, current $ 629