Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets - Additional information (Details)

v3.19.3
Intangible Assets - Additional information (Details) - USD ($)
3 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Finite-Lived Intangible Assets [Line Items]    
Amortization of Intangible Assets $ 77,000 $ 83,000
Intangible asset impairment $ 0 $ 0
Patents [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Asset, Useful Life 10 years  
Maximum [Member] | Intellectual Property [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Asset, Useful Life 23 years  
Minimum [Member] | Intellectual Property [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Asset, Useful Life 16 years