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Commitments and Contingencies (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
|---|---|---|
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Mar. 31, 2015
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Mar. 31, 2014
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| Commitments and Contingencies [Abstract] | ||
| Royalties paid, minimum (in hundredths) | 0.50%xoma_RoyaltiesPaidPercentageMinimum | |
| Royalties paid, maximum (in hundredths) | 5.00%xoma_RoyaltiesPaidPercentageMaximum | |
| Sublicense fees paid, maximum (in hundredths) | 40.00%xoma_RoyaltiesPaidSublicenseFeePercentageMaximum | |
| Estimate of milestone payments | $ 77.3xoma_ContractualObligationEstimatedMilestonePayments | |
| Leases [Abstract] | ||
| Total rental expense | $ 0.9us-gaap_LeaseAndRentalExpense | $ 0.9us-gaap_LeaseAndRentalExpense |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Reflects estimated obligations that are due and payable upon achievement of certain criteria categorized as developmental, regulatory, or commercial milestones. No definition available.
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| X | ||||||||||
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- Definition
The maximum percentage of royalties paid to selling price of licensed components. No definition available.
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| X | ||||||||||
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- Definition
The minimum percentage of royalties paid to selling price of licensed components. No definition available.
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| X | ||||||||||
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- Definition
The maximum percentage of royalties paid to sublicense fees. No definition available.
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