XML 49 R27.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Licensing, Collaborative and Other Arrangements (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Sep. 30, 2010 | Sep. 30, 2012
Development Milestone [Member] |  |
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] |  |
Amount due upon achievement of milestone |  | 8.5
Sales Milestone [Member] |  |
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] |  |
Amount due upon achievement of milestone |  | 15.1
Collaborative Arrangement [Member] |  |
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] |  |
Number of fixed-dose combination product candidates included in a portfolio of antihypertensive products from Servier |  | 3
License fees paid | $ 1.5 |

X
- Definition Amount of potential cash payments that could result from the contingent consideration arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_BusinessAcquisitionContingentConsiderationPotentialCashPayment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount paid to a licensor for license fee during the period. + References No definition available. + Details
Name: | xoma_LicenseFeeAmountPaid
Namespace Prefix: | xoma_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The number of fixed-dose combination ("FDC") product candidates included in a portfolio of antihypertensive products from Servier. + References No definition available. + Details
Name: | xoma_NumberOfFixedDoseCombinationProductCandidatesIncludedInPortfolioOfAntihypertensiveProductsFromServier
Namespace Prefix: | xoma_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant