Condensed Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 38,073	$ 45,076
Prepaid expenses and other current assets	2,611	2,452
Total current assets	40,684	47,528
Property and equipment, net	1,111	1,182
Right-of-use assets	1,148	779
Restricted cash	1,366	1,366
Deposits and other assets	271	275
Total assets	44,580	51,130
Current liabilities:
Accounts payable	746	1,177
Accrued expenses	2,114	2,358
Litigation accrual	1,675	1,675
Accrued compensation expense	415	657
Current operating lease liabilities	913	955
Total current liabilities	5,863	6,822
Long term operating lease liabilities	349
Total liabilities	6,212	6,822
Stockholders’ equity:
Preferred stock, no par value, 10,000 shares authorized; none outstanding
Common stock, no par value; 300,000 shares authorized; shares issued and outstanding: 50,789 as of March 31, 2023 and 50,736 as of December 31, 2022, respectively	109,050	109,050
Additional paid-in capital	8,378	8,009
Accumulated other comprehensive loss	44	35
Accumulated deficit	(79,104)	(72,786)
Total stockholders’ equity	38,368	44,308
Total liabilities and stockholders’ equity	$ 44,580	$ 51,130