Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Additional information (Details)

v3.20.4
Summary of Significant Accounting Policies - Additional information (Details)
 3 Months Ended 6 Months Ended
Dec. 31, 2020
USD ($)
customer
Dec. 31, 2019
USD ($)
customer
Dec. 31, 2020
USD ($)
customer
item
Dec. 31, 2019
USD ($)
customer
Jun. 30, 2020
USD ($)
Summary Of Significant Accounting Policies [Line Items]          
Number Of Lines Of Business | item     3    
Contract liabilities (or deferred revenue) $ 1,233,000   $ 1,233,000   $ 1,810,000
Goodwill and Intangible Asset Impairment     0 $ 0  
Work in process 1,071,000   1,071,000   798,000
Revenues 705,000 $ 314,000 1,115,000 422,000  
Reserve for loss on contract 497,000   497,000 0  
Contract with Customer, Liability, Revenue Recognized 187,000 $ 25,000 499,000 $ 118,000  
Contract with Customer, Asset, Net, Current 0   $ 0   0
Dividend rate     0.00%    
Amount in excess of insured limit $ 41,810,000   $ 41,810,000   $ 54,680,000
Number of major customers | customer 4 4 4 5  
Revenue          
Summary Of Significant Accounting Policies [Line Items]          
Concentration Risk, Percentage 63.80% 51.50% 50.00% 50.00%  
Transferred over Time          
Summary Of Significant Accounting Policies [Line Items]          
Revenues   $ 25,000   $ 73,000  
Transferred at Point in Time          
Summary Of Significant Accounting Policies [Line Items]          
Revenues $ 705,000 $ 289,000 $ 1,115,000 $ 349,000  
Minimum          
Summary Of Significant Accounting Policies [Line Items]          
Estimated useful life, Fixed assets     P3Y    
Maximum          
Summary Of Significant Accounting Policies [Line Items]          
Estimated useful life, Fixed assets     P15Y    
Patents          
Summary Of Significant Accounting Policies [Line Items]          
Finite-Lived Intangible Asset, Useful Life     10 years    
Intellectual Property | Minimum          
Summary Of Significant Accounting Policies [Line Items]          
Finite-Lived Intangible Asset, Useful Life     16 years    
Intellectual Property | Maximum          
Summary Of Significant Accounting Policies [Line Items]          
Finite-Lived Intangible Asset, Useful Life     23 years