The Company (Details Textual)	12 Months Ended
	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%