Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 31,947	$ 32,499
Short-term investments	251,506	283,725
Accounts receivable, net		4,831
Other receivables	1,962	1,326
Inventory	7,581	4,491
Prepaid expenses and other current assets	2,954	3,082
Total current assets	299,689	330,513
Long-term investments	61,188	56,858
Operating lease right-of-use assets	23,956	25,177
Property and equipment, net	20,436	22,193
Restricted cash	524	524
Other assets	818	1,004
Total assets	406,611	436,269
Current liabilities:
Accounts payable	4,628	1,370
Accrued expenses	9,815	9,212
Deferred revenue	189	206
Operating lease liabilities, current	2,265	2,295
Other current liabilities	140	139
Total current liabilities	17,037	13,222
Operating lease liabilities, net of current portion	24,831	25,964
Other noncurrent liabilities	44	179
Total liabilities	41,912	39,365
Commitments and contingencies (Note 9)
Stockholders’ equity:
Preferred stock, $0.00001 par value; 5,000,000 shares authorized as of , June 30, 2024 and December 31, 2023; zero shares issued and outstanding as of June 30, 2024 and December 31, 2023	0	0
Additional paid-in capital	714,626	702,868
Accumulated other comprehensive loss	(626)	(192)
Accumulated deficit	(349,302)	(305,773)
Total stockholders’ equity	364,699	396,904
Total liabilities and stockholders’ equity	406,611	436,269
Class A common stock
Stockholders’ equity:
Common stock	1	1
Class B common stock
Stockholders’ equity:
Common stock	0	0
Nonrelated Party
Current assets:
Accounts receivable, net	3,145
Related Party
Current assets:
Accounts receivable, net	$ 594	$ 559