Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2014

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):

	June 30, 2014				December 31, 2013
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Unsecured notes payable	$	1,397,162	$	1,478,767	$	1,396,620	$	1,471,041
Variable rate debt	$	528,610	$	504,044	$	528,610	$	526,693
Mortgage notes payable	$	662,478	$	697,731	$	670,151	$	715,244
Notes receivable	$	4,226	$	5,088	$	7,026	$	7,759