INVENTORY (Tables)

3 Months Ended

Mar. 31, 2022

Inventory Disclosure [Abstract]

Schedule of Inventory, Current

The components of inventory are as follows:

(in thousands)	March 31, 2022		December 31, 2021
Materials and supplies	$	14,488	$	8,899
Work in process	38,874		28,235
Finished goods	24,871		28,454
Total	$	78,233	$	65,588