Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 163,635	$ 55,904
Investments	208,701	317,271
Prepaid expenses and other current assets	5,847	5,047
Total current assets	378,183	378,222
Property and equipment, net	36,786	39,172
Goodwill	39,154	39,154
Intangible assets	25,150	25,150
Restricted cash	1,362	1,372
Deposits	529	533
Investments	0	34,320
Operating lease right-of-use assets, net	4,173	3,901
Finance lease right-of-use asset, net	42,363	44,517
Total assets	527,700	566,341
Current liabilities:
Accounts payable and accrued expenses	37,827	45,789
Operating lease liabilities, current	1,001	925
Finance lease liability, current	1,856	1,791
Total current liabilities	40,684	48,505
Operating lease liabilities, non-current	3,258	2,973
Finance lease liability, non-current	19,383	19,353
Other liabilities	1,141	2,936
Total liabilities	64,466	73,767
Commitments and contingencies (Note 14)
Stockholders' equity:
Common stock, $0.01 par value, 180,000,000 shares authorized; 106,453,818 and 90,282,267 shares issued and outstanding at December 31, 2024 and December 31, 2023, respectively	1,065	903
Additional paid-in capital	1,680,219	1,450,722
Accumulated other comprehensive income (loss)	66	319
Accumulated deficit	(1,218,116)	(959,370)
Total stockholders' equity	463,234	492,574
Total liabilities and stockholders' equity	527,700	566,341
Series A Convertible Preferred Shares
Stockholders' equity:
Preferred stock
Series B Convertible Preferred Shares
Stockholders' equity:
Preferred stock