Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Narrative) (Details)

v3.23.3
Summary of Significant Accounting Policies (Narrative) (Details)
 12 Months Ended
Jun. 30, 2023
USD ($)
customer
Jun. 30, 2022
USD ($)
customer
Summary Of Significant Accounting Policies [Line Items]    
Reserve for loss on contract $ 0 $ 0
Contract assets 0 0
Contract liabilities 0 100,000
Revenue recognized included in contract liabilities $ 100 $ 178,000
Dividend rate 0.00% 0.00%
Amount of liability for uncertain tax positions $ 0 $ 0
Amount in excess of insured limit 6,900,000 18,200,000
Accounts receivable - trade   1,000,000
Royalty income   7,000
Revenues 0 1,884,000
Revenue reported in discontinued operations $ 391,000 $ 499,000
Four Customers [Member] | Revenue [Member] | Customer Concentration Risk [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Number of major customers | customer 4  
Revenue reported in discontinued operations $ 391,000  
Eight Customers [Member] | Revenue [Member] | Customer Concentration Risk [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Number of major customers | customer   8
Revenue reported in discontinued operations   $ 499,000
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 15 years  
Intellectual Property [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Intangible asset, useful life 20 years