XOMA Corporation Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Financial Statements Details - Outstanding Securities Considered Anti-Dilutive (Details) - $ / shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Antidilutive Securities Excluded From Computation Of Earnings Per Share
Antidilutive securities excluded from computation of net loss per share (in shares)	6,813	5,897	6,790	5,840
Common Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share
Stock price (in dollars per share)	$ 14.09		$ 14.09
Convertible preferred stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share
Antidilutive securities excluded from computation of net loss per share (in shares)	5,003	5,003	5,003	5,003
Common stock options
Antidilutive Securities Excluded From Computation Of Earnings Per Share
Antidilutive securities excluded from computation of net loss per share (in shares)	1,804	888	1,781	831
Warrants for common stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share
Antidilutive securities excluded from computation of net loss per share (in shares)	6	6	6	6