Real Estate Investments Real Estate Investments (Tables)

3 Months Ended

Mar. 31, 2013

Real Estate [Abstract]

Gross Carrying Value Of Company's Properties [Table Text Block]

As of March 31, 2013 and December 31, 2012, the gross carrying value of the Company’s Properties was as follows (in thousands):

	March 31, 2013		December 31, 2012
Land	$	641,507	$	662,107
Building and improvements	3,483,888		3,576,065
Tenant improvements	482,495		487,997
	$	4,607,890	$	4,726,169