XOMA Corporation Annual report pursuant to Section 13 and 15(d)

Capital Stock - Common Stock Warrants (Details)

Capital Stock - Common Stock Warrants (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended
	Dec. 31, 2023	Mar. 31, 2019	May 31, 2018
Common Stock Warrants, Issued May 2018
Warrants
Exercise price of warrants (in dollars per share)	$ 23.69
Common Stock Warrants, Issued May 2018 \| SVB Loan
Warrants
Aggregate number of unregistered shares of common stock called by warrants (in shares)			6,332
Exercise price of warrants (in dollars per share)			$ 23.69
Exercisable period of warrants			10 years
Estimated fair value of warrants			$ 0.1
Common Stock Warrants, Issued March 2019
Warrants
Exercise price of warrants (in dollars per share)	$ 14.71
Common Stock Warrants, Issued March 2019 \| SVB Loan
Warrants
Aggregate number of unregistered shares of common stock called by warrants (in shares)		4,845
Exercise price of warrants (in dollars per share)		$ 14.71
Exercisable period of warrants		10 years
Estimated fair value of warrants		$ 0.1
Common Stock Warrants, Issued December 2023 \| Blue Owl Loan Agreement
Warrants
Aggregate number of unregistered shares of common stock called by warrants (in shares)	120,000
Exercisable period of warrants	10 years
Estimated fair value of warrants	$ 1.5
Common Stock Warrants, Issued December 2023, Exercise price of $35.00 per share
Warrants
Exercise price of warrants (in dollars per share)	$ 35.00
Fair value per share (in dollars per share)	$ 12.53
Common Stock Warrants, Issued December 2023, Exercise price of $35.00 per share \| Blue Owl Loan Agreement
Warrants
Aggregate number of unregistered shares of common stock called by warrants (in shares)	40,000
Exercise price of warrants (in dollars per share)	$ 35.00
Common Stock Warrants, Issued December 2023, Exercise price of $42.50 per share
Warrants
Exercise price of warrants (in dollars per share)	42.50
Fair value per share (in dollars per share)	$ 12.23
Common Stock Warrants, Issued December 2023, Exercise price of $42.50 per share \| Blue Owl Loan Agreement
Warrants
Aggregate number of unregistered shares of common stock called by warrants (in shares)	40,000
Exercise price of warrants (in dollars per share)	$ 42.50
Common Stock Warrants, Issued December 2023, Exercise price of $50.00 per share
Warrants
Exercise price of warrants (in dollars per share)	50.00
Fair value per share (in dollars per share)	$ 11.97
Common Stock Warrants, Issued December 2023, Exercise price of $50.00 per share \| Blue Owl Loan Agreement
Warrants
Aggregate number of unregistered shares of common stock called by warrants (in shares)	40,000
Exercise price of warrants (in dollars per share)	$ 50.00