CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 13,159	$ 63,458
Marketable securities	29,144	5,993
Accounts receivable - related party	588	507
Prepaid and other current assets	773	1,354
Total current assets	43,664	71,312
Property and equipment, net	353	451
Operating lease right-of-use asset	2,217	3,190
Investment in Angel Pharmaceuticals	21,877	34,266
Other assets	129	236
Total assets	68,240	109,455
Current liabilities:
Accounts payable	1,976	1,565
Operating lease liability	1,228	1,046
Accrued and other liabilities	7,548	7,081
Total current liabilities	10,752	9,692
Operating lease liability	1,373	2,601
Total liabilities	12,125	12,293
Commitments and contingencies (Note 13)
Stockholders' equity:
Preferred stock: $0.0001 par value; 10,000,000 shares authorized at December 31, 2022 and December 31, 2021; 0 shares issued and outstanding at December 31, 2022 and December 31, 2021
Common stock: $0.0001 par value; 290,000,000 shares authorized at December 31, 2022 and December 31, 2021; 46,553,511 shares issued and outstanding at December 31, 2022 and December 31, 2021	5	5
Additional paid-in capital	364,361	361,669
Accumulated other comprehensive (loss) income	(563)	1,869
Accumulated deficit	(307,688)	(266,381)
Total stockholders' equity	56,115	97,162
Total liabilities and stockholders' equity	$ 68,240	$ 109,455