Inventory

6 Months Ended

Jun. 30, 2021

Inventory

Inventory

5. Inventory

Inventory as of June 30, 2021 and December 31, 2020 consisted of the following (in thousands):

	June 30,		December 31,
	2021		2020
Raw materials and supplies - production locations	$	131,932	$	92,221
Raw materials and supplies - customer locations		14,096		12,405
Work-in-process		58,147		29,349
Finished goods		5,645		5,411
Inventory	$	209,820	$	139,386