Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Income Tax Contingency [Line Items]
Federal statutory rate	21.00%	21.00%	27.55%
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201609Member	us-gaap:AccountingStandardsUpdate201609Member
Share-based payment arrangement, expense, tax benefit	$ 500	$ 200
Stockholder's equity	545,689	262,455	$ 187,129	$ 153,921
NOL carryforwards	$ 109,600	$ 95,300
Cumulative Effect, Period of Adoption, Adjustment
Income Tax Contingency [Line Items]
Stockholder's equity			$ 353