CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 33,986	$ 108,382
Short-term investments	141,040	47,491
Assets Held For Sale	0	28,907
Prepaid expenses and other current assets	5,989	7,129
Total current assets	181,015	191,909
Equity method investment	25,814	0
Property and equipment, net	1,078	2,252
Right-of-use assets	20,563	15,607
Restricted cash	0	1,953
Total assets	228,470	211,721
Current liabilities:
Accounts payable	1,144	2,366
Accrued expenses and other liabilities	18,715	11,406
Operating Lease Liabilities	1,561	246
Deferred revenue	1,156	3,208
Total current liabilities	22,576	17,226
Non-current liabilities:
Operating lease liabilities, net of current portion	27,916	23,688
Deferred revenue, net of current portion	0	1,156
Total liabilities	50,492	42,070
Stockholders’ equity:
Preferred stock, $0.0001 par value, 10,000,000 shares authorized as of December 31, 2022 and 2021; no shares issued and outstanding at December 31, 2022 and 2021	0	0
Common stock, $0.0001 par value; 200,000,000 shares authorized as of December 31, 2022 and 2021; 57,483,910 and 57,150,274 shares issued and outstanding as of December 31, 2022and 2021, respectively	6	6
Additional paid-in capital	607,513	593,784
Accumulated other comprehensive gain	(404)	(7)
Accumulated deficit	(429,137)	(424,132)
Total stockholders’ equity	177,978	169,651
Total liabilities and stockholders' equity	$ 228,470	$ 211,721