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Income Tax Provision - Computation of Income Tax Expense (Details)
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Income Tax Provision      
Federal Statutory Rate (21.00%) (28.10%) (34.00%)
Research and Development Credit (9.21%) 0.40% (6.87%)
State Tax Rate (7.49%) (3.79%) (4.95%)
Stock Based Compensation 0.14% 0.00% 0.00%
Change in Statutory Federal Rate 80.30% 62.36% 0.00%
Valuation Allowance (42.74%) (30.87%) 45.82%
Effective Tax Rate 0.00% 0.00% 0.00%