Tax Receivable Agreement Liability (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Tax Receivable Agreement [Line Items]
Deferred Tax Assets, Investment in Subsidiaries	$ 109,375	$ 109,375
Tax receivable agreement, percentage of realized cash saving in tax to be pass through	85.00%	85.00%
Tax Receivable Agreement [Roll Forward]
Beginning balance		$ 93,750	$ 96,470
Adjustment for change in estimated tax rate		(8,140)	0	$ 0
Payment under tax receivable agreement		(4,279)	(2,831)	0
Ending balance	$ 82,291	82,291	93,750	$ 96,470
Payable pursuant to tax receivable agreement, current portion	4,332	4,332	4,189
Payable pursuant to tax receivable agreement, less current portion	77,959	77,959	89,561
Exchange of LLC Units for Class A Shares [Member]
Tax Receivable Agreement [Roll Forward]
Additions (reductions) to tax receivable agreement:		960	111
Adjustment for change in estimated tax rate	$ 8,140	$ (8,140)	$ 0