Note 2 - Summary of Significant Accounting Policies - Goodwill (Details) - USD ($) |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Sep. 30, 2022 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Beginning Balance (gross goodwill impairment losses to date) | $ 0 | $ 50,263,000 | |
| Acquisitions (See Note 5) | 1,864,000 | 0 | |
| Impairment charges | $ (42,000,000) | 0 | (50,263,000) |
| Ending Balance | $ 50,263,000,000,000 | $ 1,864,000 | $ 0 |
| 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/exampleRef
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| X | ||||||||||
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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