XML 25 R52.htm IDEA: XBRL DOCUMENT
v3.3.0.814

Subsequent Events (Details) - Subsequent Event [Member] - USD ($) $ in Millions | Nov. 05, 2015 | Nov. 04, 2015
--- | --- | ---
Biodefense Business [Member] |  |
Subsequent Event [Line Items] |  |
Common stock, shares agreed |  | 23,008
Biodefense Business [Member] | Maximum [Member] |  |
Subsequent Event [Line Items] |  |
Cash payment for assets |  | $ 1.5
Manufacturing Facility in Berkeley, California [Member] | Maximum [Member] |  |
Subsequent Event [Line Items] |  |
Cash payment for assets | $ 5.0 |
Aggregate value of common stock | $ 1.0 |
Closing date of purchase agreement | Dec. 31, 2015 |

X
- Definition The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 + Details
Name: | us-gaap_ProceedsFromSaleOfProductiveAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Closing date of purchase agreement. + References No definition available. + Details
Name: | xoma_ClosingDateOfPurchaseAgreement
Namespace Prefix: | xoma_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disposal group not discontinued operation, common stock issued or issuable value received + References No definition available. + Details
Name: | xoma_DisposalGroupNotDiscontinuedOperationCommonStockIssuedOrIssuableValueReceived
Namespace Prefix: | xoma_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Disposal group not discontinued operation, number of common stock shares agreed. + References No definition available. + Details
Name: | xoma_DisposalGroupNotDiscontinuedOperationNumberOfCommonStockSharesAgreed
Namespace Prefix: | xoma_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=xoma_BiodefenseBusinessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=xoma_ManufacturingFacility1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |