Fair Value of Financial Instruments Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2013

Fair Value Disclosures [Abstract]

Schedule Of Financial Instruments With Fair Values Different From Their Carrying Amount [Table Text Block]

The following are financial instruments for which the Company’s estimates of fair value differ from the carrying amounts (in thousands):

	March 31, 2013				December 31, 2012
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Mortgage notes payable	$	441,177	$	490,915	$	443,942	$	486,412
Unsecured notes payable	$	1,430,343	$	1,582,027	$	1,430,343	$	1,553,123
Variable rate debt	$	528,610	$	526,693	$	597,610	$	595,693
Notes receivable	$	7,026	$	8,283	$	7,226	$	7,783