Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Narrative) (Details)

v3.21.2
Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)
3 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Jun. 30, 2021
Summary Of Significant Accounting Policies [Line Items]      
Provisions for contract loss $ 0   $ 0
Contract assets 0   0
Contract liabilities (or deferred revenue) 94,000   423,000
Revenue recognized included in contract liabilities $ 84,000 $ 311,800  
Dividend rate 0.00%    
Amount in excess of insured limit $ 12,408,000   $ 27,013,000
Goodwill and Intangible Asset Impairment $ 0 $ 0  
One Customer [Member] | Revenue [Member] | Customer Concentration Risk [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Concentration risk, percentage   50.00%  
Two Customers [Member] | Revenue [Member] | Customer Concentration Risk [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Concentration risk, percentage 81.00% 100.00%  
Three Customers [Member] | Revenue [Member] | Customer Concentration Risk [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Concentration risk, percentage 100.00%    
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    
Patents and Licenses [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Intangible asset, useful life 10 years    
Intellectual Property [Member] | Minimum [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Intangible asset, useful life 16 years    
Intellectual Property [Member] | Maximum [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Intangible asset, useful life 23 years