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

Condensed Consolidated Financial Statements Details - Outstanding Securities Considered Anti-Dilutive (Details) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Antidilutive Securities Excluded From Computation Of Earnings Per Share
Antidilutive securities excluded from computation of net loss per share (in shares)	1,227,000	6,728,000	1,431,000	6,643,000
Shares issuable based on market price	673,000		647,000
Performance Stock Unit Awards
Antidilutive Securities Excluded From Computation Of Earnings Per Share
Shares issuable based on market price			0
Common Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share
Stock price (in dollars per share)	$ 23.69		$ 23.69
Convertible preferred stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share
Antidilutive securities excluded from computation of net loss per share (in shares)		5,003,000		5,003,000
Employee Stock Option
Antidilutive Securities Excluded From Computation Of Earnings Per Share
Antidilutive securities excluded from computation of net loss per share (in shares)	1,107,000	1,719,000	1,311,000	1,634,000
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)	120,000	6,000	120,000	6,000