Real Estate Investments - Assets Held for Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Real Estate [Abstract]
Land	$ 1,037
Building and Improvements	1,418
Accumulated depreciation	(151)
Real estate held-for-sale, gross	2,304
Lease intangibles, net	0
Total real estate held for sale, net	$ 2,304	$ 0

Lease Intangible Assets And Liabilities Net

No definition available.

Name:	adc_LeaseIntangibleAssetsAndLiabilitiesNet
Namespace Prefix:	adc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The cumulative amount of depreciation for real estate property held for sale.

No definition available.

Name:	adc_RealEstateHeldForSaleAccumulatedDepreciation
Namespace Prefix:	adc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Gross amount as of investments in buildings held for sale, excluding real estate considered to be inventory of the entity.

No definition available.

Name:	adc_RealEstateHeldForSaleBuildingAndImprovements
Namespace Prefix:	adc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of real estate held for sale excluding lease assets and liabilities, net of accumulated depreciation at the end of the reporting period.

No definition available.

Name:	adc_RealEstateHeldForSaleExcludingLeaseIntangibleAssetsAndLiabilitiesNet
Namespace Prefix:	adc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Gross amount as of investments in land held for sale, excluding real estate considered to be inventory of the entity.

No definition available.

Name:	adc_RealEstateHeldForSaleLand
Namespace Prefix:	adc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount of real estate investments, net of accumulated depreciation .

No definition available.

Name:	adc_RealEstateHeldForSaleNetTotal
Namespace Prefix:	adc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

No definition available.