Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets (Details)

v3.8.0.1
Intangible Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Jun. 30, 2017
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross carrying value $ 5,494 $ 5,446
Finite-Lived Intangible Assets, Accumulated Amortization (3,792) (3,623)
Net intangible assets 1,702 1,823
Intellectual Property [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross carrying value 3,100 3,100
Finite-Lived Intangible Assets, Accumulated Amortization (2,166) (2,088)
Patents [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross carrying value 2,394 2,346
Finite-Lived Intangible Assets, Accumulated Amortization $ (1,626) $ (1,535)