Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Allowance for Trade Receivables
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning Balance	$ 75	$ 111	$ 211
Chargeback Additions	162	469	756
Chargeback Reductions	(220)	(505)	(856)
Ending Balance	17	75	111
Valuation Allowance of Deferred Tax Assets
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning Balance	50,083	29,820	17,672
Chargeback Additions	8,187	20,635	12,271
Chargeback Reductions	(16)	(372)	(123)
Ending Balance	$ 58,254	$ 50,083	$ 29,820