v3.26.3
Property and equipment, net - Additional information (Detail) - USD ($)
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Property, Plant and Equipment, Net [Abstract]    
Depreciation and amortization expense $ 58,000 $ 66,000
Disposal group, including discontinued operation, assets 200,000  
Gain or loss disposition of assets $ 0