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Note 4 - Fair Value Measurements - Contingent Consideration (Details) - Contingent Consideration [Member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Balance $ 4,315 $ 35,410
Additions 0 0
Payments (4,315) (10,000)
Change in fair value 0 (21,095)
Balance $ 0 $ 4,315