Note 7 - Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Thousands  | 
Sep. 30, 2020  | 
Jun. 30, 2020  | 
|---|---|---|
| Goodwill, Ending Balance | $ 25,388 | $ 25,388 | 
| Other Indefinite-lived Intangible Assets | $ 19,700 | 
| X | ||||||||||
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
  | 
| X | ||||||||||
- Definition Amount after impairment of indefinite-lived intangible assets classified as other. Excludes financial assets and goodwill. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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