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Note 7 - Leases (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Sales-type Lease, Lease Income, Total $ 0 $ 1,000 $ 0 $ 2,000