|
Concentration of Risk, Segment and Geographic Information (Details) (USD $)
In Thousands, unless otherwise specified
|
3 Months Ended |
12 Months Ended |
|
Dec. 31, 2014
|
Sep. 30, 2014
|
Jun. 30, 2014
|
Mar. 31, 2014
|
Dec. 31, 2013
|
Sep. 30, 2013
|
Jun. 30, 2013
|
Mar. 31, 2013
|
Dec. 31, 2014
Segment
|
Dec. 31, 2013
|
Dec. 31, 2012
|
| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
| Number of operating segments |
|
|
|
|
|
|
|
|
1us-gaap_NumberOfOperatingSegments
|
|
|
| Revenues |
$ 4,347us-gaap_Revenues
|
$ 5,136us-gaap_Revenues
|
$ 5,973us-gaap_Revenues
|
$ 3,410us-gaap_Revenues
|
$ 12,535us-gaap_Revenues
|
$ 6,312us-gaap_Revenues
|
$ 7,151us-gaap_Revenues
|
$ 9,453us-gaap_Revenues
|
$ 18,866us-gaap_Revenues
|
$ 35,451us-gaap_Revenues
|
$ 33,782us-gaap_Revenues
|
| United States [Member] | Reportable Geographical Components [Member] |
|
|
|
|
|
|
|
|
|
|
|
| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
| Revenues |
|
|
|
|
|
|
|
|
11,756us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableGeographicalComponentsMember
/ us-gaap_StatementGeographicalAxis
= country_US
|
19,955us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableGeographicalComponentsMember
/ us-gaap_StatementGeographicalAxis
= country_US
|
14,134us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableGeographicalComponentsMember
/ us-gaap_StatementGeographicalAxis
= country_US
|
| Europe [Member] | Reportable Geographical Components [Member] |
|
|
|
|
|
|
|
|
|
|
|
| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
| Revenues |
|
|
|
|
|
|
|
|
5,510us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableGeographicalComponentsMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember
|
15,396us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableGeographicalComponentsMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember
|
18,454us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableGeographicalComponentsMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember
|
| Asia Pacific [Member] | Reportable Geographical Components [Member] |
|
|
|
|
|
|
|
|
|
|
|
| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
| Revenues |
|
|
|
|
|
|
|
|
$ 1,600us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableGeographicalComponentsMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
|
$ 100us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableGeographicalComponentsMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
|
$ 1,194us-gaap_Revenues
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableGeographicalComponentsMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_AsiaPacificMember
|
| Revenues [Member] | Customer Concentration Risk [Member] |
|
|
|
|
|
|
|
|
|
|
|
| Concentration Risk [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
| Number of major customers |
|
|
|
|
|
|
|
|
2xoma_NumberOfMajorCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
|
3xoma_NumberOfMajorCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
|
|
| Revenues [Member] | Customer Concentration Risk [Member] | Customer 1 [Member] |
|
|
|
|
|
|
|
|
|
|
|
| Concentration Risk [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
| Concentration risk, percentage (in hundredths) |
|
|
|
|
|
|
|
|
51.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= xoma_Customer1Member
|
43.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= xoma_Customer1Member
|
|
| Revenues [Member] | Customer Concentration Risk [Member] | Customer 2 [Member] |
|
|
|
|
|
|
|
|
|
|
|
| Concentration Risk [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
| Concentration risk, percentage (in hundredths) |
|
|
|
|
|
|
|
|
28.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= xoma_Customer2Member
|
26.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= xoma_Customer2Member
|
|
| Revenues [Member] | Customer Concentration Risk [Member] | Customer 3 [Member] |
|
|
|
|
|
|
|
|
|
|
|
| Concentration Risk [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
| Concentration risk, percentage (in hundredths) |
|
|
|
|
|
|
|
|
|
20.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= xoma_Customer3Member
|
|
| Accounts Receivable [Member] | Customer Concentration Risk [Member] |
|
|
|
|
|
|
|
|
|
|
|
| Concentration Risk [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
| Number of major customers |
|
|
|
|
|
|
|
|
3xoma_NumberOfMajorCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
|
2xoma_NumberOfMajorCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
|
|
| Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer 1 [Member] |
|
|
|
|
|
|
|
|
|
|
|
| Concentration Risk [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
| Concentration risk, percentage (in hundredths) |
|
|
|
|
|
|
|
|
44.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= xoma_Customer1Member
|
73.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= xoma_Customer1Member
|
|
| Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer 2 [Member] |
|
|
|
|
|
|
|
|
|
|
|
| Concentration Risk [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
| Concentration risk, percentage (in hundredths) |
|
|
|
|
|
|
|
|
34.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= xoma_Customer2Member
|
13.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= xoma_Customer2Member
|
|
| Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer 3 [Member] |
|
|
|
|
|
|
|
|
|
|
|
| Concentration Risk [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
| Concentration risk, percentage (in hundredths) |
|
|
|
|
|
|
|
|
12.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= xoma_Customer3Member
|
|
|