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Note 3 - Revenue Recognition (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Contract with Customer, Liability $ 11,700   $ 11,700   $ 3,000
Contract with Customer, Liability, Revenue Recognized $ 900 $ 0 $ 1,200 $ 0