XML 42 R31.htm IDEA: XBRL DOCUMENT v3.21.1
Note 3 - Inventories - Components of Inventories (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Raw materials $ 24,570 $ 20,631
Work-in-process 1,076 1,416
Finished goods 5,799 5,489
Supplies 1,732 1,641
Total inventories $ 33,177 $ 29,177