Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Goodwill and Patents (Details Textual)

v3.19.3.a.u2
Note 8 - Goodwill and Patents (Details Textual)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2019
USD ($)
Sep. 30, 2019
USD ($)
Goodwill, Impairment Loss $ 0 $ 0
Number of Patents Granted 21  
Patents [Member]    
Finite-Lived Intangible Asset, Useful Life 20 years