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 9 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2018
Mar. 31, 2017
Jun. 30, 2017
Summary Of Significant Accounting Policies [Line Items]          
Revenue from Grants $ 0 $ 44 $ 44 $ 84  
Work in process $ 0   $ 0   $ 26
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