Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Summary of Significant Accounting Policies

Schedule of inventory

	As of December 31,
(in thousands)		2019		2020
Raw materials	$	—	$	952
Work in process		498		4,608
Finished goods		184		263
Total Inventory	$	682	$	5,823

Schedule of summary of balances and activity in each of the product revenue allowance and reserve

	2019		2020
Balance at January 1	$	—	$	534
Provision related to current period sales		635		182
Adjustment related to prior period sales		—		194
Credit or payments made during the period		(101)		(248)
Balance at December 31	$	534	$	662