Inventory (Tables)

3 Months Ended

Mar. 31, 2020

Inventory

Schedule of inventory

		As of		As of
		December 31, 2019		March 31, 2020
(in thousands)		2019		2020
Raw materials	$	—	$	—
Work in process		498		3,946
Finished goods		184		278
Total Inventory	$	682	$	4,224