Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 133,359	$ 120,027
Marketable securities	58,685
Prepaid expenses and other current assets	2,193	4,100
Total current assets	194,237	124,127
Property and equipment, net	7,742	10,100
Right-of-use assets	63,492	59,102
Restricted cash	5,031	5,037
Long-term deposit and other assets	1,647	725
Total assets	272,149	199,091
Current liabilities:
Accounts payable	2,374	2,912
Accrued expenses and other current liabilities	10,716	6,838
Operating lease liability, current portion	3,246	3,681
Deferred revenue, current portion	10,137	3,874
Current portion of long-term debt	3,347
Total current liabilities	29,820	17,305
Deferred revenue, net of current portion	5,622
Operating lease liability, net of current portion	59,140	53,013
Long-term debt and accrued interest	26,700	29,290
Other long term liabilities		49
Total liabilities	121,282	99,657
Commitments and contingencies (Note 10)
Stockholders' equity (deficit):
Additional paid-in capital	398,459	257,810
Accumulated deficit	(247,597)	(158,379)
Total stockholders' equity	150,867	99,434
Total liabilities and stockholders' equity	272,149	199,091
Voting Common Stock
Stockholders' equity (deficit):
Common stock	4	2
Non-voting Common Stock
Stockholders' equity (deficit):
Common stock	$ 1	$ 1