Consolidated Statements of Cash Flows (Parenthetical) (USD $)	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Acquisition of real estate investments, capitalized interest	$ 0	$ 148,507

Name:

adc_InterestCapitalizedForRealEstateUnderDevelopment

Namespace Prefix:

adc

Data Type:

xbrli:monetaryItemType

Balance Type:

credit

Period Type:

duration