Inventory (Tables)

3 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Components of Inventory

The components of inventory are summarized as follows:

	March 31, 2019		December 31, 2018
	(in thousands)
Raw materials	$	1,744	$	1,880
Work in process		198,961		215,122
Finished goods		27,900		18,182
Total inventory	$	228,605	$	235,184
	March 31, 2019		December 31, 2018
	(in thousands)
Balance Sheet Classification:
Inventory	$	115,206	$	114,245
Other assets		113,399		120,939
Total inventory	$	228,605	$	235,184