CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 58,866	$ 39,330
Short term investments	117,186	40,785
Accounts receivable	2,237	3,301
Other current assets	3,663	2,629
Total current assets	181,952	86,045
Property and equipment, net of accumulated depreciation of $15,742 and $13,716 at June 30, 2025 and December 31, 2024, respectively	15,981	17,974
Operating lease right-of-use assets	16,417	17,368
Goodwill	19,094	16,966
Intangible assets	9,637	9,589
Other assets	13,662	13,798
Total assets	256,743	161,740
Current liabilities:
Accounts payable	1,610	858
Accrued expenses and other current liabilities	7,369	8,536
Operating lease current liabilities	2,824	2,462
Deferred revenue	353	288
Total current liabilities	12,156	12,144
Warrants	30,261	28,707
Operating lease noncurrent liabilities	13,483	14,352
Other long-term liabilities	1,763	1,795
Long term debt, net	246,295	54,621
Total liabilities	303,958	111,619
Stockholders’ equity:
Common stock, authorized 500,000,000 shares; 133,146,901 and 131,268,940 shares issued and 133,014,673  and 131,136,712 shares outstanding at June 30, 2025 and December 31, 2024, respectively	15	14
Additional paid-in capital	933,537	912,241
Accumulated other comprehensive income	3,806	665
Accumulated deficit	(983,880)	(862,106)
Common stock in treasury, at cost; 132,228 shares at both June 30, 2025 and December 31, 2024	(693)	(693)
Total stockholders’ equity (deficit)	(47,215)	50,121
Total liabilities and stockholders’ equity	$ 256,743	$ 161,740