CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 94,307	$ 122,470
Short-term investments	43,901	59,731
Accounts receivable, net	7,808	3,985
Inventory	19,916	3,675
Prepaid expenses and other current assets	14,006	6,585
Total current assets	179,938	196,446
Property and equipment, net	2,150	2,834
Operating lease right-of-use assets	4,069	5,550
Other long-term assets	5,669	8,720
Intangible asset, net	18,750	19,250
Total assets	210,576	232,800
Current liabilities:
Accounts payable	2,522	1,868
Accrued expenses	34,500	38,031
Operating lease liabilities	3,336	3,381
Other current liabilities	3,186	1,544
Total current liabilities	43,544	44,824
Non-current liabilities:
Non-current operating lease liabilities	1,278	2,669
Deferred revenue	12,000
Other long-term liabilities	260	270
Total liabilities	57,082	47,763
Commitments and contingencies (Note 14)
Shareholders' equity:
Additional paid-in capital	874,153	860,482
Accumulated other comprehensive income	(90)	(66)
Accumulated deficit	(720,588)	(675,397)
Total shareholders' equity	153,494	185,037
Total liabilities and shareholders' equity	210,576	232,800
Class A common shares
Shareholders' equity:
Common stock value	9	8
Class B common shares
Shareholders' equity:
Common stock value	1	1
Class A1 common shares
Shareholders' equity:
Common stock value	5	5
Class B1 common shares
Shareholders' equity:
Common stock value	$ 4	$ 4