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Commitments and Contingencies (Details) (USD $)
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12 Months Ended | ||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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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 | $ 77,300,000xoma_ContractualObligationEstimatedMilestonePayments | ||
| Estimated future minimum lease commitments [Abstract] | |||
| 2015 | 3,428,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent | ||
| 2016 | 3,531,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears | ||
| 2017 | 3,637,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears | ||
| 2018 | 3,742,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears | ||
| 2019 | 3,852,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears | ||
| Thereafter | 10,733,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter | ||
| Minimum lease payments | 28,923,000us-gaap_OperatingLeasesFutureMinimumPaymentsDue | ||
| Total rental expense | 3,500,000us-gaap_LeaseAndRentalExpense | 3,500,000us-gaap_LeaseAndRentalExpense | 4,500,000us-gaap_LeaseAndRentalExpense |
| Restructuring charges | 84,000us-gaap_RestructuringCharges | 328,000us-gaap_RestructuringCharges | 5,074,000us-gaap_RestructuringCharges |
| Sublease income | $ 49,000us-gaap_OperatingLeasesIncomeStatementSubleaseRevenue | ||
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- Details
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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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- Definition
Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of revenue recognized for the period under subleasing arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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- Definition
The maximum percentage of royalties paid to selling price of licensed components. No definition available.
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- Definition
The minimum percentage of royalties paid to selling price of licensed components. No definition available.
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- Definition
The maximum percentage of royalties paid to sublicense fees. No definition available.
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