Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets (Details)

v3.8.0.1
Intangible Assets (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Jun. 30, 2017
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross carrying value $ 5,566 $ 5,446
Finite-Lived Intangible Assets, Accumulated Amortization (3,879) (3,623)
Net intangible assets 1,687 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 (2,205) (2,088)
Patents [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross carrying value 2,466 2,346
Finite-Lived Intangible Assets, Accumulated Amortization $ (1,674) $ (1,535)