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Inventories (Tables)
3 Months Ended
Mar. 31, 2022
Inventory Disclosure [Abstract]  
Schedule of inventories Inventories at March 31, 2022 and December 31, 2021 consisted of the following:
(in thousands)March 31, 2022December 31, 2021
Raw material$3,237$2,726
Work-in-process4,9563,746
Finished goods13,21912,520
Supplies945788
Total inventories$22,357$19,780