Inventories (Tables)

3 Months Ended

Mar. 31, 2020

Inventories

Components of inventories

The components of inventories are summarized below (in thousands):

	March 31,		December 31,
	2020		2019
Inventories:
Raw materials	$	20,974	$	20,677
Work in process		24,874		24,946
Finished goods		2,405		3,529
	$	48,253	$	49,152