Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 13,523	$ 14,852
Prepaid expenses and other current assets	2,265	3,664
Other receivables	3,363	8,531
Total current assets	19,151	27,047
Restricted cash	5,720	5,960
Property and equipment, net	12,559	3,617
Operating lease right-of-use asset	44,717	43,035
In-process research and development	10,256	10,256
Goodwill	3,490	3,490
Other assets	2,470	2,429
Total assets	98,363	95,834
Current liabilities
Accounts payable and accrued liabilities	5,689	6,034
Accrued compensation	768	1,828
Current portion of operating lease liabilities	9,481	17,011
Other current liabilities	523
Total current liabilities	16,461	24,873
Operating lease liabilities, net of current portion	28,583	31,804
Convertible debt	58,633
Long-term debt	23,674
Deferred tax liability	3,077	3,077
Total liabilities	130,428	59,754
Commitments and contingencies (Note 12)
Shareholders' (deficit) equity
Common stock, $0.01 par value; 217,000,000 shares authorized; 36,122,932 and 36,144,706 shares issued and outstanding at December 31, 2023 and 2022, respectively	361	361
Additional paid-in capital	276,393	275,493
Accumulated deficit	(308,819)	(239,774)
Total shareholders' (deficit) equity	(32,065)	36,080
Total liabilities and shareholders' (deficit) equity	$ 98,363	$ 95,834