XML 77 R64.htm IDEA: XBRL DOCUMENT
v3.20.2

Long-Term Debt and Other Financings - Interest Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Interest expense |  |  |  |
Interest expense | $ 434 | $ 484 | $ 1,484 | $ 1,336
Silicon Valley Bank Loans |  |  |  |
Interest expense |  |  |  |
Interest expense | 334 | 314 | 1,073 | 791
Novartis Note |  |  |  |
Interest expense |  |  |  |
Interest expense | $ 100 | 168 | 409 | 540
Other |  |  |  |
Interest expense |  |  |  |
Interest expense |  | $ 2 | $ 2 | $ 5

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

X
- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
Name: | us-gaap_InterestExpenseDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=xoma_SiliconValleyBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=xoma_NovartisNoteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=xoma_OtherFinancingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |