Noncontrolling Interests Noncontrolling Redeemable Property Partnerships (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Noncontrolling Interest Redeemable Property Partnership [Abstract]
Beginning Balance	$ 99,609	$ 97,558
Net Loss for Redeemable interest in Property Partnership	(106)	(525)
Distributions on Redeemable Property Partnership	(1,050)	(1,350)
Adjustment to Reflect Redeemable Interest at Redemption Value	1,874	2,533
Ending Balance	$ 100,327	$ 98,216