XML 56 R43.htm IDEA: XBRL DOCUMENT
v3.20.2

Commitment and Contingencies: Legal Proceedings - Narrative (Details) | Oct. 31, 2019 civilComplaint | Oct. 29, 2019 patent
--- | --- | ---
Lupin Patent Infringement |  |
Gain Contingencies [Line Items] |  |
Number of patents allegedly infringed upon | patent |  | 4
US District Court for the Northern District of Ohio |  |
Gain Contingencies [Line Items] |  |
Number of civil complaints filed against entity | civilComplaint | 3 |

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_GainContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of entity's patents that another entity has allegedly infringed. + References No definition available. + Details
Name: | us-gaap_GainContingencyPatentsAllegedlyInfringedUponNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total number of new claims filed pertaining to a loss contingency during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349 + Details
Name: | us-gaap_LossContingencyNewClaimsFiledNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_LitigationCaseAxis=lgnd_LupinPatentInfringementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=lgnd_USDistrictCourtForTheNorthernDistrictOfOhioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |