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- 401(k) Plan (Details) - USD ($) $ in Thousands	12 Months Ended
- 401(k) Plan (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Defined Contribution Plan Disclosure [Line Items]
Employer contributions	$ 3,684	$ 3,206	$ 1,874
Maximum
Defined Contribution Plan Disclosure [Line Items]
Employee Contribution of eligible compensation		3.00%	3.00%
401(k) Plan \| Maximum
Defined Contribution Plan Disclosure [Line Items]
Employee Contribution of eligible compensation	3.00%