XML 24 R14.htm IDEA: XBRL DOCUMENT
v3.23.1

Common Stock Warrants | 3 Months Ended
--- | ---
Mar. 31, 2023
Common Stock Warrants |
Common Stock Warrants | 8. Common Stock Warrants As of March 31, 2023 and December 31, 2022, the following common stock warrants were outstanding: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ |  | Exercise Price |  | March 31, |  | December 31,
Issuance Date | ​ | Expiration Date | ​ | Balance Sheet Classification | ​ | per Share | ​ | 2023 | ​ | 2022
May 2018 |  | May 2028 |  | Stockholders’ equity | ​ | $ | 23.69 |  | 6,332 |  | 6,332
March 2019 | ​ | March 2029 | ​ | Stockholders’ equity | ​ | $ | 14.71 | ​ | 4,845 | ​ | 4,845
​ |  |  |  |  | ​ |  |  |  | 11,177 |  | 11,177
​ ​

X
- References No definition available. + Details
Name: | us-gaap_WarrantsAndRightsNoteDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Common stock warrant. + References No definition available. + Details
Name: | xoma_CommonStockWarrantDisclosureTextBlock
Namespace Prefix: | xoma_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration