Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets (Details Textual)

v3.8.0.1
Intangible Assets (Details Textual) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]        
Amortization of Intangible Assets $ 84 $ 88 $ 169 $ 176
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