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Note 14 - Revenue - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Net sales $ 102,547 $ 84,643 $ 73,812 $ 72,311 $ 69,381 $ 77,632 $ 69,971 $ 68,923 $ 333,313 $ 285,907 $ 279,317
Transferred over Time [Member]                      
Net sales                 259,823 241,690 279,317
Transferred at Point in Time [Member]                      
Net sales                 $ 73,490 $ 44,217 $ 0