XML 77 R65.htm IDEA: XBRL DOCUMENT
v3.25.3

Commitment and contingencies (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2025 | Sep. 30, 2024
Long-Lived Assets Held-for-Sale [Line Items] |  |  |
Impairment of long-lived assets and prepaid expenses, and other related costs | $ 827 | $ 7,240 | $ 0
United Kingdom | Leaseholds and Leasehold Improvements |  |  |
Long-Lived Assets Held-for-Sale [Line Items] |  |  |
Impairment of long-lived assets and prepaid expenses, and other related costs | $ 800 |  |

X
- Definition Impairment Of Long-Lived Assets, Prepaid Expenses, and Other Costs + References No definition available. + Details
Name: | adc_ImpairmentOfLongLivedAssetsPrepaidExpensesAndOtherCosts
Namespace Prefix: | adc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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_LongLivedAssetsHeldForSaleLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_StatementGeographicalAxis=country_GB
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LeaseholdsAndLeaseholdImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |