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Note 5 - Fair Value Measurements - Reconciliation of Contingent Consideration (Details) - Contingent Consideration Liability [Member]
$ in Thousands
6 Months Ended
Jun. 30, 2022
USD ($)
Beginning balance, January 1, 2022 $ 146,759
Changes in fair value (2,641)
Present value interest accretion 1,383
Currency translation (2,405)
Ending balance, June 30, 2022 $ 143,096