XML 90 R74.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Research and Development Prepaid Expenses and Accrued Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |  |
Prepaid research and development expenditures | $ 1,466 | $ 442
Accrued research and development expenditure | $ 7,289 | $ 8,911

X
- Definition Accrued Research And Development, Current + References No definition available. + Details
Name: | smmt_AccruedResearchAndDevelopmentCurrent
Namespace Prefix: | smmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Research and Development Prepaid Expenses, Current + References No definition available. + Details
Name: | smmt_ResearchAndDevelopmentPrepaidExpensesCurrent
Namespace Prefix: | smmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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