Inventory (Tables)

12 Months Ended

Dec. 31, 2020

Inventory Disclosure [Abstract]

Inventory

Inventory consisted of the following at December 31, 2020 and 2019 (in thousands):

	2020		2019
Finished goods	$	600	$	105
Work-in-process		802		1,229
Raw materials and supplies		31,683		35,023
Inventory	$	33,085	$	36,357