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Note 5 - Inventories - Summary of Inventories (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Mar. 31, 2020
Raw materials   $ 14,852 $ 15,565
Work-in-process   12,811 11,262
Finished goods   33,347 35,336
Total   61,010 62,163
Inventories $ 42,718 46,209 42,718
Other long-term assets   $ 14,801 $ 19,445