Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Goodwill and Patents (Details Textual)

v3.10.0.1
Note 8 - Goodwill and Patents (Details Textual)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
USD ($)
Jun. 30, 2018
USD ($)
Goodwill, Impairment Loss $ 0 $ 0
Number of Patents Granted   13
Patents [Member]    
Finite-Lived Intangible Asset, Useful Life   20 years