INVENTORIES (Tables)

3 Months Ended

Mar. 31, 2019

INVENTORIES

Schedule of inventories

(in thousands)	As of March 31, 2019		As of December 31, 2018
Raw materials	$	20,401	$	19,632
Work in process		12,711		9,278
Finished goods		36,924		38,780
Total inventories	$	70,036	$	67,690