XML 44 R59.htm IDEA: XBRL DOCUMENT
v3.19.3

Commitments and Contingencies - Future Cash Flows to be Received from Subleases (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Estimated future minimum sublease income [Abstract] |  |  |
2019 (excluding the nine months ended September 30, 2019) |  | $ 560 |
2020 |  | 2,280 |
2021 |  | 1,906 |
2022 |  | 1,644 |
2023 |  | 556 |
Total minimum lease payments |  | $ 6,946 |
Estimated future minimum sublease income [Abstract] |  |  |
2019 | [1] |  | $ 2,249
2020 | [1] |  | 2,376
2021 | [1] |  | 2,006
2022 | [1] |  | 1,746
2023 | [1] |  | 592
Total minimum lease payments | [1] |  | $ 8,969
[1] | Sublease income as of December 31, 2018 includes base lease payments and expected reimbursement of certain operating expenses under executed sublease agreements.

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

X
- Definition Amount of lease payments to be received by lessor for operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919396-209981 + Details
Name: | us-gaap_LessorOperatingLeasePaymentsToBeReceived
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of lease payments to be received by lessor in fifth fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919396-209981 + Details
Name: | us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of lease payments to be received by lessor in fourth year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919396-209981 + Details
Name: | us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of lease payments to be received by lessor in remainder of fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919396-209981 + Details
Name: | us-gaap_LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of lease payments to be received by lessor in third fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919396-209981 + Details
Name: | us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of lease payments to be received by lessor in second fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919396-209981 + Details
Name: | us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Contractually required future rental payments receivable on noncancelable subleasing arrangements. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 + Details
Name: | us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Operating leases future minimum payments due sublease income. + References No definition available. + Details
Name: | xoma_OperatingLeasesFutureMinimumPaymentsDueSubleaseIncomeAbstract
Namespace Prefix: | xoma_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contractually required future rental payments receivable on non-cancelable subleasing arrangements current. + References No definition available. + Details
Name: | xoma_OperatingLeasesFutureMinimumPaymentsDueSubleaseRentalsCurrent
Namespace Prefix: | xoma_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Contractually required future rental payments receivable on non-cancelable subleasing arrangements year five. + References No definition available. + Details
Name: | xoma_OperatingLeasesFutureMinimumPaymentsDueSubleaseRentalsYearFive
Namespace Prefix: | xoma_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Contractually required future rental payments receivable on non-cancelable subleasing arrangements year four. + References No definition available. + Details
Name: | xoma_OperatingLeasesFutureMinimumPaymentsDueSubleaseRentalsYearFour
Namespace Prefix: | xoma_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Contractually required future rental payments receivable on non-cancelable subleasing arrangements year three. + References No definition available. + Details
Name: | xoma_OperatingLeasesFutureMinimumPaymentsDueSubleaseRentalsYearThree
Namespace Prefix: | xoma_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Contractually required future rental payments receivable on non-cancelable subleasing arrangements year two. + References No definition available. + Details
Name: | xoma_OperatingLeasesFutureMinimumPaymentsDueSubleaseRentalsYearTwo
Namespace Prefix: | xoma_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant