Annual report pursuant to Section 13 and 15(d)

Income Taxes - Tax Credit Carryforwards (Details)

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Income Taxes - Tax Credit Carryforwards (Details) - USD ($)
12 Months Ended 24 Months Ended
Jun. 30, 2024
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2008
Income Taxes        
Deferred tax assets valuation allowance $ 54,850,000 $ 54,850,000 $ 49,555,000  
Federal net operating loss carryforwards 229,500,000 229,500,000   $ 5,500,000
Federal net operating loss carryforwards, subject to expiration 64,000,000 64,000,000    
Federal net operating loss carryforwards, not subject to expiration 165,500,000 165,500,000    
Research and development tax credit carryforward 1,764,000 1,764,000 $ 1,764,000  
State and local net operating loss carryforwards 46,700,000 46,700,000    
Unrecognized tax benefits, accrued interest and penalties $ 0 0    
Unrecognized tax benefits, penalties and interest expense   $ 0    
Stock buyback excise tax on share repurchases 1.00%