Inventory

3 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Inventory

6. Inventory

Inventory consisted of the following as of March 31, 2019 and December 31, 2018:

(In thousands)	March 31, 2019		December 31, 2018
Raw materials	$	3,046	$	2,367
Work in process		5,143		3,553
Finished goods		2,135		1,717
Total inventories	$	10,324	$	7,637

Finished goods manufactured by the Company have a shelf life of approximately 24 months from the date of manufacture.

The Company reduces its inventory to net realizable value for potentially excess, dated or obsolete inventory based on an analysis of forecasted demand compared to quantities on hand and any firm purchase orders, as well as product shelf life. As of March 31, 2019, the Company determined that no write-downs to inventory for potentially excess, dated or obsolete inventory were required.