Annual report [Section 13 and 15(d), not S-K Item 405]

Summary of Significant Accounting Policies - Cash, Cash Equivalents and Restricted Cash (Details)

v3.25.2
Summary of Significant Accounting Policies - Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2023
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents [Abstract]      
Restricted cash, held in accordance with liquidity covenants $ 210,000 $ 215,000  
Additional collateral held by bank (percentage of credit issued) 5.00%    
Cash and equivalents $ 8,582,000 14,210,000  
Restricted cash 210,000 215,000  
Total cash, cash equivalents and restricted cash 8,792,000 14,425,000 $ 7,579,000
Collateral Held For Letter Of Credit - San Diego Lease      
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents [Abstract]      
Restricted cash, held in accordance with liquidity covenants 203,000 198,000  
Collateral Held For Company Purchasing Card      
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents [Abstract]      
Restricted cash, held in accordance with liquidity covenants $ 7,000 $ 17,000