Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Narrative) (Details)

v3.24.1.1.u2
Summary of Significant Accounting Policies (Narrative) (Details)
 3 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2023
USD ($)
customer
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
customer
Jun. 30, 2023
USD ($)
Dec. 31, 2023
USD ($)
Jun. 30, 2022
USD ($)
Summary Of Significant Accounting Policies [Line Items]            
Accounts receivable - trade           $ 1,000,000
Reserve for loss on contract   $ 0   $ 0    
Revenue recognized   50,000   0    
Contract assets       0 $ 0  
Contract liabilities   $ 175,000   0   $ 100,000
Lease, Practical Expedients, Package [true false]   false        
Investments in debt securities   $ 0   0    
Inventory   0   0    
Research and development expense $ 837,000 $ 0 $ 6,361,000      
Dividend rate   0.00%        
Amount in excess of insured limit   $ 5,900,000   $ 6,900,000    
Revenue reported in discontinued operations 205,000   391,000      
Revenues   $ 50,000        
Discontinued Operations [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Revenue recognized included in contract liabilities $ 53,000   $ 100,000      
One Customer [Member] | Revenue [Member] | Customer Concentration Risk [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Concentration risk, percentage 100.00%   100.00%      
Revenues $ 0   $ 0      
Two Customers [Member] | Revenue [Member] | Customer Concentration Risk [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Number of major customers | customer 2          
Three Customers [Member] | Revenue [Member] | Customer Concentration Risk [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Number of major customers | customer     2      
Minimum [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Fixed assets, useful life   3 years        
Maximum [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Fixed assets, useful life   10 years        
Intellectual Property [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Intangible asset, useful life   20 years