XML 69 R58.htm IDEA: XBRL DOCUMENT
v3.23.2

Fair Value Measurements - Contingent Consideration (Details) - USD ($) $ in Thousands |  | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2023 | Jun. 21, 2023 | Dec. 31, 2022 | Feb. 25, 2019
Fair Value Measurements |  |  |  |  |
Changes in estimated fair value of contingent consideration |  | $ 75 |  |  |
Contingent consideration under RPAs, AAAs and CPPAs | $ 1,000 | 1,000 |  | $ 75 |
Bioasis | Royalty Purchase Agreement |  |  |  |  |
Fair Value Measurements |  |  |  |  |
Contingent consideration under RPAs, AAAs and CPPAs | 0 | 0 |  |  | $ 75
LadRx |  |  |  |  |
Fair Value Measurements |  |  |  |  |
Changes in estimated fair value of contingent consideration | $ 0 |  |  |  |
Contingent consideration under RPAs, AAAs and CPPAs |  |  | $ 1,000 |  |
LadRx | Royalty Purchase Agreement |  |  |  |  |
Fair Value Measurements |  |  |  |  |
Changes in estimated fair value of contingent consideration |  | $ 0 |  |  |
Contingent consideration under RPAs, AAAs and CPPAs |  |  | $ 1,000 |  |

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-3 + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Changes in estimated fair value of contingent consideration. + References No definition available. + Details
Name: | xoma_ChangesInEstimatedFairValueOfContingentConsideration
Namespace Prefix: | xoma_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Liability recorded for contingent consideration under purchase agreements. May include royalty purchase agreements, commercial payment purchase agreements, payment interest purchase agreements and assignment and assumption agreements + References No definition available. + Details
Name: | xoma_ContingentConsiderationUnderPurchaseAgreements
Namespace Prefix: | xoma_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | srt_CounterpartyNameAxis=xoma_BioasisTechnologiesIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=xoma_RoyaltyPurchaseAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=xoma_LadrxMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |