Consolidated Balance Sheets - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 25,106,000	$ 14,852,000
Awards receivable	1,257,000	1,936,000
Prepaid expenses and other current assets	12,232,000	10,259,000
Total current assets	38,595,000	27,047,000
Restricted cash	5,720,000	5,960,000
Property and equipment, net	5,437,000	3,617,000
Operating lease right-of-use asset	42,828,000	43,035,000
In-process research and development	10,256,000	10,256,000
Goodwill	3,490,000	3,490,000
Other assets	2,453,000	2,429,000
Total assets	108,779,000	95,834,000
Current liabilities
Accounts payable and accrued liabilities	5,000,000	6,034,000
Accrued compensation	923,000	1,828,000
Current portion of operating lease liabilities	13,104,000	17,011,000
Convertible debt	32,388,000
Total current liabilities	51,415,000	24,873,000
Operating lease liabilities, net of current portion	31,840,000	31,804,000
Deferred tax liability	3,077,000	3,077,000
Total liabilities	86,332,000	59,754,000
Stockholders' equity
Common stock, $0.01 par value; 217,000,000 shares authorized; 36,144,706 shares issued and outstanding at March 31, 2023 and December 31, 2022	361,000	361,000
Additional paid-in capital	276,350,000	275,493,000
Accumulated deficit	(254,264,000)	(239,774,000)
Total stockholders' equity	22,447,000	36,080,000
Total liabilities and stockholders' equity	$ 108,779,000	$ 95,834,000