CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents	$ 111,350	$ 56,445
Short-term investments	244,509	166,434
Escrow deposits, current	346	502
Prepaid expenses and other current assets	5,436	4,773
Total current assets	361,641	228,154
Property and equipment, net	77,938	57,967
Operating lease right-of-use assets	29,488	11,854
Restricted cash	1,979	1,717
Escrow deposits, non-current		220
Long-term investments	39,427	135,914
Security deposits	1,278	1,549
Total assets	511,751	437,375
Current liabilities
Accounts payable	5,685	7,596
Accrued expenses and other liabilities	8,755	6,040
Deposit liability	860	980
Long-term debt, current	4,036	1,039
Deferred revenue, current	7,571
Total current liabilities	26,907	15,655
Operating lease liability, long term	36,594	14,559
Deposit liability, non-current	971	2,020
Deferred revenue, non-current	110,938
Long-term debt, net	6,136	8,903
Total liabilities	181,546	41,137
Commitments and contingencies (Note 12)
Stockholders' equity:
Preferred stock, $ 0.0001 par value, 10,000,000 shares authorized at September 30, 2022 and December 31, 2021, respectively, and 0 shares issued and outstanding at September 30, 2022 and December 31, 2021, respectively
Common stock, $0.0001 par value, 300,000,000 shares authorized at September 30, 2022 and December 31, 2021, respectively; 58,184,655 and 55,005,523 shares issued and outstanding at September 30, 2022 and December 31, 2021, respectively	6	5
Additional paid-in capital	821,219	785,049
Accumulated deficit	(487,416)	(388,166)
Accumulated other comprehensive loss	(3,604)	(650)
Total stockholders' equity	330,205	396,238
Total liabilities and stockholders' equity	$ 511,751	$ 437,375