XML 49 R39.htm IDEA: XBRL DOCUMENT v3.21.2
Note 6 - Intangible Assets (Details Textual) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Amortization of Intangible Assets, Total $ 2.0 $ 2.2 $ 3.9 $ 3.5