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The Company (Details Textual) | 12 Months Ended
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Dec. 31, 2012
Annual Base Rental Revenues Received Percentage | 97.00%
Walgreen Co [Member] |
Annual Base Rental Revenues Received Percentage | 30.00%
Kmart Corporation [Member] |
Annual Base Rental Revenues Received Percentage | 7.00%
Cvs Caremark Corporation [Member] |
Annual Base Rental Revenues Received Percentage | 7.00%

X
- Definition Percentage of annual base rental revenues received from national and regional tenants under long-term lease. + References No definition available. + Details
Name: | adc_AnnualBaseRentalRevenuesReceivedPercentage
Namespace Prefix: | adc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration