Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details Textual)

v3.8.0.1
Summary of Significant Accounting Policies (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Jun. 30, 2017
Summary Of Significant Accounting Policies [Line Items]      
Revenue from Grants $ 44 $ 36  
Work in process $ 0   $ 26
Minimum [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Property, Plant and Equipment, Estimated Useful Lives 3 years    
Maximum [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Property, Plant and Equipment, Estimated Useful Lives 15 years    
Patents [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Finite-Lived Intangible Assets, Remaining Amortization Period 10 years    
Intellectual Property [Member] | Minimum [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Finite-Lived Intangible Assets, Remaining Amortization Period 16 years    
Intellectual Property [Member] | Maximum [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Finite-Lived Intangible Assets, Remaining Amortization Period 23 years